ASSP Power Supply Applications (Secondary battery) DC/DC Converte

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ASSP Power Supply Applications (Secondary battery) DC/DC Converte

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DS04-27241-1Ea
ASSP Power Supply Applications (Secondary battery)
DC/DC Converter Charging Li-ion Battery
MB39A114
DESCRIPTION
MB39A114 DC/DC converter pulse width modulation (PWM) type charging, capable independently controlling output voltage output current. suitable down conversion. MB39A114 dynamically control secondary battery's charge current detecting voltage drop adapter keep power constant (dynamically-controlled charging) This easily charge current value, making ideal built-in charging device products such notebook
FEATURES
Built-in constant current control circuit 2-system. Analog control charge current value possible. (+INE1 terminal +INE2 terminal) Built-in adapter detection function (When lower than battery voltage +0.2 output fixed off.) Constant voltage control state detection function (CVM terminal) enables prevention mis-detection full charge. Built-in overvoltage detection function (OVP terminal) charge voltage (Continued)
PACKAGE
24-pin plastic SSOP
(FPT-24P-M03)
Copyright©2004-2008 FUJITSU MICROELECTRONICS LIMITED rights reserved 2004.5
MB39A114
(Continued) Wide range operating power-supply voltage range Built-in output setting resistor Built-in switching function (SEL terminal) output setting voltage 16.8 12.6 Output voltage setting accuracy 0.74% Built-in high accuracy current detection amplifier input voltage difference input voltage difference Output voltage setting resistor open enable prevention invalidity current standby (ICC Typ). Oscillation frequency range Built-in current detection with wide in-phase input voltage range Built-in soft-start function independent loads Built-in standby current function (Typ) Built-in totem-pole type output stage supporting devices.
MB39A114
ASSIGNMENT
(TOP VIEW)
-INC2 OUTC2 +INE2 -INE2
+INC2
VREF
FB12 -INE1 +INE1 OUTC1
-INE3
-INC1
+INC1
(FPT-24P-M03)
MB39A114
DESCRIPTION
Symbol -INC2 OUTC2 +INE2 -INE2 VREF FB12 -INE1 +INE1 OUTC1 -INC1 +INC1 -INE3 +INC2 Description Current detection amplifier (Current Amp2) inverted input terminal Current detection amplifier (Current Amp2) output terminal Error amplifier (Error Amp2) non-inverted input terminal Error amplifier (Error Amp2) inverted input terminal Open drain type output terminal constant voltage control state detection comparator Comp.) Reference voltage output terminal Error amplifier (Error Amp1, Error Amp2) output terminal Error amplifier (Error Amp1) inverted input terminal Error amplifier (Error Amp1) non-inverted input terminal Current detection amplifier (Current Amp1) output terminal Charge voltage setting switch terminal cell cell) level terminal charge voltage setting 16.8 Cell) level terminal charge voltage setting 12.6 Cell) Current detection amplifier (Current Amp1) inverted input terminal Current detection amplifier (Current Amp1) non-inverted input terminal Power-supply control terminal Setting terminal level places standby mode. Error amplifier (Error Amp3) output terminal Error amplifier (Error Amp3) inverted input terminal Triangular wave oscillation frequency setting resistor connection terminal Open drain type output terminal overvoltage detection comparator Comp.) Power supply terminal drive circuit External gate drive terminal Power supply terminal reference power supply, control circuit output circuit Soft-start capacitor connection terminal Ground terminal Current detection amplifier (Current Amp2) non-inverted input terminal
MB39A114
BLOCK DIAGRAM
-INE1 OUTC1 +INC1 -INC1 <Current <Error VREF
Comp.>
Comp.> Comp.> -INC2 (VO) <PWM Comp.> <OUT> Drive VREF <Error -2.5 -1.5 Bias Voltage UVLO VREF UVLO bias <OSC> <REF> <CTL> VREF VREF
+INE1 -INE2
<Current
OUTC2 +INC2 -INC2 +INE2 FB12
-INE3
4Cell 3Cell
<SOFT> VREF
<Error
V/3.15
MB39A114
ABSOLUTE MAXIMUM RATINGS
Parameter Power supply voltage Output current Peak output current Power dissipation Storage temperature Symbol IOUT IOUT TSTG Conditions terminal Duty 1/fosc Duty) Rating 740* +125 Unit
packages mounted dual-sided epoxy board WARNING: Semiconductor devices permanently damaged application stress (voltage, current, temperature, etc.) excess absolute maximum ratings. exceed these ratings.
MB39A114
RECOMMENDED OPERATING CONDITIONS
Parameter Power supply voltage Reference voltage output current terminal output current Input voltage terminal input voltage Output current Peak output current terminal output voltage terminal output current terminal output voltage terminal output current terminal input voltage Oscillation frequency Timing resistor Soft-start capacitor terminal capacitor Reference voltage output capacitor Operating ambient temperature Symbol IREF VINE VINC VCTL IOUT IOUT VCVM ICVM VOVP IOVP VSEL fosc CREF terminal -INE1 -INE3, +INE1, +INE2 terminal +INC1, +INC2, -INC1, -INC2 terminal Duty 1/fosc Duty) Conditions Value -600 0.022 +600 Unit
WARNING: recommended operating conditions required order ensure normal operation semiconductor device. device's electrical characteristics warranted when device operated within these ranges. Always semiconductor devices within their recommended operating condition ranges. Operation outside these ranges adversely affect reliability could result device failure. warranty made with respect uses, operating conditions, combinations represented data sheet. Users considering application outside listed conditions advised contact their representatives beforehand.
MB39A114
ELECTRICAL CHARACTERISTICS
Parameter Output voltage Reference voltage block [REF] Input stability Load stability Output current short circuit Under voltage lockout protection circuit block [UVLO] Soft start block [SOFT] Threshold voltage Hysteresis width Charge current Symbol VREF1 VREF2 Line Load VTLH VTHL fosc f/fdt (VCC VREF Value Conditions Unit VREF VREF VREF VREF 4.975 4.963 -100 FB12 FB12 5.000 5.000 0.2* 5.025 5.037
Oscillation Triangular wave frequency oscillator block Frequency [OSC] temperature stability Input offset voltage Input bias current In-phase input voltage range Error amplifier block [Error Amp1, Error Amp2] Voltage gain Frequency bandwidth Output voltage Output source current Output sink current Standard design value
VFBH VFBL ISOURCE ISINK
FB12
100* 1.3* -120
(Continued)
MB39A114
(VCC VREF Value Conditions Unit -INC2 16.8 -INC2 16.8 +INE3 Cell setting) +INE3 3.15 Cell setting) 100* 1.3* -120
Parameter Voltage gain Frequency bandwidth Output voltage Output source current Output sink current
Symbol VFBH VFBL ISOURCE ISINK VTH1 VTH2 VTH3 VTH4
16.716 16.800 16.884 16.676 16.800 16.924 12.537 12.600 12.663 12.507 12.600 12.694 -180 -195 -120 -130
Error amplifier block [Error Amp3]
Threshold voltage
Input current Input resistance input voltage
IINL VOFF ISELH ISELL INCH INCH INCL INCL
Input current Input offset voltage Current detection amplifier block [Current Amp1, Input current Current Amp2]
+INC1 +INC2 -INC1 -INC2 +INC1 +INC2 VCC, -100 +INC1 VCC, -100 +INC1 +INC2 -100 +INC1 +INC2 -100
Standard design value (Continued)
MB39A114
(VCC VREF Parameter Symbol VOUTC1 Current detection voltage VOUTC2 VOUTC3 VOUTC4 Current In-phase input detection voltage range amplifier block [Current Amp1, Voltage gain Current Amp2] Frequency bandwidth Output voltage Output source current Output sink current comparator block [PWM Comp.] Threshold voltage Output source current Output sink current Output resistor Rise time Fall time Threshold adaptor voltage detection block Hysteresis Comp.] width Standard design value (Continued) VOUTCH VOUTCL ISOURCE ISINK ISOURCE ISINK VTLH VTHL Conditions +INC1 +INC2 VCC, -100 +INC1 +INC2 VCC, +INC1 +INC2 -100 +INC1 +INC2 +INC1 +INC2 VCC, -100 OUTC1 OUTC2 OUTC1 OUTC2 Duty cycle Duty cycle 100% Duty 1/fosc Duty) Duty 1/fosc Duty) 3300 3300 -INC2 16.8 -INC2 16.8 Value 0.34 17.2 16.8 0.40 400* 400* 17.4 17.0 0.4* 0.46 17.6 17.2 Unit
Output block [OUT]
MB39A114
(Continued) Parameter Threshold voltage Constant voltage control state detection block Comp.] Hysteresis width terminal output leak current terminal output resistor Threshold voltage Hysteresis width Symbol VTLH VTHL (VCC VREF Value Conditions Unit 0.1*
ILEAK
VTLH VTHL
0.1*
Overvoltage detection block terminal output leak Comp.] current terminal output resistor input voltage Input current Bias voltage block [VH]
ILEAK
VOFF ICTLH ICTLL
operating state standby staet
Control block [CTL]
Output voltage Standby current Power supply current
ICCS
General
Standard design value
MB39A114
TYPICAL CHARACTERISTICS
Power Supply Current Power Supply Voltage Power supply current (mA)
terminal Input Current, Reference Voltage terminal Input Voltage terminal input current ICTL (µA)
VREF VREF
ICTL
Power supply voltage
terminal input voltage VCTL
Reference voltage Power Supply voltage Reference voltage VREF
Reference Voltage Load Current Reference voltage VREF
VREF
Power supply voltage
Load current IREF (mA)
Reference Voltage Operating Ambient Temperature Reference voltage VREF
5.08 5.06 5.04 5.02 5.00 4.98 4.96 4.94 4.92 VREF
Operating ambient temperature
(Continued)
Reference voltage VREF
1000
MB39A114
Triangular Wave Oscillation Frequency Power Supply Voltage
Triangular Wave Oscillation Frequency Operating Ambient Temperature
Triangular wave oscillation frequency fosc (kHz)
Triangular wave oscillation frequency fosc (kHz)
Power supply voltage
Operating ambient temperature
Triangular Wave Oscillation Frequency Timing Resistor
1000
Triangular wave oscillation frequency fosc (kHz)
1000
Timing resistor Error Amplifier Threshold Voltage Ambient Temperature
Error amplifier threshold voltage
4.25 4.24 4.23 4.22 4.21 4.20 4.19 4.18 4.17 4.16 4.15
Ambient temperature (Continued)
MB39A114
Error Amplifier Gain, Phase Frequency
Gain (dB)
Phase (deg)
Error Amp1 (Error Amp2)
-180
Frequency (Hz) Error Amplifier Gain, Phase Frequency
Gain (dB)
Phase (deg)
-180
Error Amp3
Frequency (Hz) Current Detection Amplifier Gain, Phase Frequency
Gain (dB)
Phase (deg)
(24)
12.6 Current Amp1 (Current Amp2) -180
Frequency (Hz) (Continued)
MB39A114
(Continued)
Power Dissipation Operating Ambient Temperature Power dissipation (mW)
Operating ambient temperature
MB39A114
FUNCTIONAL DESCRIPTION
DC/DC Converter Block
Reference voltage block (REF) reference voltage circuit generator uses voltage supplied from terminal (pin generate temperature compensated stable voltage (5.0 Typ) used reference supply voltage internal circuits also possible supply load current external circuits output reference voltage through VREF terminal (pin Triangular wave oscillator block (OSC) triangular wave oscillator block built-in capacitor frequency setting, generates triangular wave oscillation waveform connecting freguency setting resistor with terminal (pin triangular wave input comparator circuits Error amplifier block (Error Amp1) error amplifier (Error Amp1) detects voltage drop adapter outputs control signal. Also, connecting feedback resistor capacitor between FB12 terminal (pin -INE1 terminal (pin possible desired level loop gain, provide stabilized phase compensation system. terminal (pin connected soft-start capacitor prevent rush currents startup. soft start time detected error amplifier, which provides constant soft-start time independent output load. Error amplifier block (Error Amp2) amplifier detects output signal from current detection amplifier (Current This amplifier providing control signal comparing +INE2 terminal (pin3), used control charging current. Also, connecting feedback resistor capacitor between FB12 terminal (pin -INE2 terminal (pin possible desired level loop gain, provide stabilized phase compensation system. terminal (pin connected soft-start capacitor prevent rush currents startup. soft start time detected error amplifier, which provides constant soft-start time independent output load. Error amplifier block (Error Amp3) error amplifier (Error Amp3) detects output voltage DC/DC converter outputs control signal. Output voltage become 16.8 terminal level, become 12.6 sets level Also, connecting feedback resistor capacitor between terminal (pin -INE3 terminal (pin possible desired level loop gain, provide stabilized phase compensation system. terminal (pin connected soft-start capacitor prevent rush currents startup. soft start time detected error amplifier, which provides constant soft-start time independent output load. Current detection amplifier block (Current Amp1) current detection amplifier (Current Amp1) detects voltage drop which occurs between both ends output sense resistor (RS) flow charge current, using +INC1 terminal (pin -INC1 terminal (pin Then outputs signal amplified times error amplifier (Error amp1) next stage.
MB39A114
Current detection amplifier block (Current Amp2) current detection amplifier (Current Amp2) detects voltage drop which occurs between both ends output sense resistor (RS) flow charge current, using +INC2 terminal (pin -INC2 terminal (pin Then outputs signal amplified times error amplifier (Error Amp2) next stage. comparator block (PWM Comp.) comparator circuit voltage-pulse width converter that controls output duty error amplifier (Error Amp.1 Error Amp.3) according output voltage. compared between triangular wave voltage generated triangular wave oscillator error amplifier output voltage during intervals when triangular wave voltage lower than error amplifier output voltage, external output transistor switched Output block (OUT) output circuit uses totem-pole configuration capable driving external P-ch device. output level, output amplitude (Typ) using voltage generated bias voltage block (VH) This results higher conversion efficiency suppressing withstand voltage connected external transistor even wide range input voltages. (10) Power control (CTL) Setting terminal pin) places standby mode. (Power supply current standby mode.) function table (11) Bias voltage block (VH) bias voltage circuit outputs (Typ) minimum potential output circuit. standby mode, this circuit outputs potential equal VCC. Power (Standby) (Active)
Protection Function
Under voltage lockout protection circuit (UVLO) transient state, which occurs when power supply (VCC) turned momentary decrease supply voltage internal reference voltage (VREF), cause control malfunction, resulting breakdown degradation system. prevent such malfunctions, under voltage lockout protection circuit detects internal reference voltage drop fixes terminal (pin level. system restores voltage supply when internal reference voltage reaches threshold voltage under voltage lockout protection circuit. Protection circuit (UVLO) operation function table. UVLO operating (VREF voltage lower than UVLO threshold voltage.)
MB39A114
adapter detection block Comp.) This block detects that power-supply voltage (VCC) lower than battery voltage +0.2 (Typ) terminal (pin fixed High level. system restores voltage supply when supply voltage reaches threshold voltage adapter detection block. Protection circuit Comp.) operation function table. Comp. operating (VCC voltage lower than Comp. threshold voltage.)
Soft start Function
Soft start block (SOFT) Connecting capacitor terminal (pin prevents rush currents from flowing upon activation power supply. Using error amplifier detect soft start allows soft-start constant setting time intervals independent output load DC/DC converter.
Detection Function
Constant voltage control state detection block. Comp.) Error amplifier (Error Amp3) detects voltage terminal (pin falling below (Typ) outputs level constant voltage control state detection block output terminal (CVM, Overvoltage state detection block Comp.) Error amplifier (Error Amp3) detects voltage terminal (pin falling below (Typ) outputs High level overvoltage detection block output terminal (OVP,
Switching function
Output voltage switching function block (SEL) charge voltage 16.8 12.6 terminal (pin function table DC/DC output setting voltage 16.8 12.6
MB39A114
SETTING CHARGING VOLTAGE
setting charging voltage switched cell cell terminal. charge voltage, terminal becomes 16.8 level. become 12.6 level. Charging voltage battery (150 4.20 16.8 (SEL (150 3.15 12.6 (SEL
-INC2
-INE3
<Error Amp3>
3.15
SETTING CHARGING CURRENT
charging current value (output limit current value) +INE2 terminal (pin current exceeding value attempts flow, charge voltage drops according current value. Battery charge current setting voltage +INE2 +INE2
SETTING TRIANGULAR WAVE OSCILLATION FREQUENCY
triangular wave oscillation frequency connecting timing resistor terminal (pin Triangular wave oscillation frequency fosc fosc (kHz) 14100/RT
MB39A114
SETTING SOFT START TIME
Setting constant voltage mode soft start prevent rush currents when turned soft-start connecting soft-start capacitors terminal (pin 22). When terminal (pin levels activated (VCC UVLO threshold voltage), becomes external soft-start capacitors (CS) connected terminal charged error amplifier output (FB3 terminal (pin determined comparison between lower voltage non-inverted input terminal voltage (internal reference voltage (Typ) terminal voltages) inverted input terminal voltage (-INE3 terminal (pin voltage). decided soft-start period terminal voltage comparison between -INE3 terminal voltage terminal voltage. DC/DC converter output voltage rises proportion terminal voltage soft-start capacitor externally connected terminal charged. soft-start time obtained from following formula Soft start time (time until output voltage 100%) 0.42 (µF) terminal voltage Internal reference voltage Error block
Soft-start time
VREF
-INE3
Error Amp3
UVLO
Soft start circuit
MB39A114
Setting constant current mode soft-start prevent rush currents when turned soft-start connecting soft-start capacitors terminal (pin 22). When terminal (pin levels activated (VREF UVLO threshold voltage), becomes external soft-start capacitors (CS) connected terminal charged error amplifier1 output (FB12 terminal (pin determined comparison between lower voltage non-inverted input terminal voltage (+INE1 terminal (pin voltage, terminal voltages) inverted input terminal voltage (-INE1 terminal (pin voltage). FB12 decided soft-start period terminal voltage +INE1) comparison between -INE1 terminal voltage terminal voltage. DC/DC converter output voltage rises proportion terminal voltage soft-start capacitor externally connected terminal charged. error amplifier2 output (FB12 terminal (pin determined comparison between lower voltage non-inverted input terminal voltage (+INE2 terminal (pin voltage, terminal voltages) inverted input terminal voltage (-INE2 terminal (pin voltage). FB12 decided soft-start period terminal voltage +INE2) comparison between -INE2 terminal voltage terminal voltage. DC/DC converter output voltage rises proportion terminal voltage soft-start capacitor externally connected terminal charged. soft-start time obtained from following formula Soft start time (time until output voltage 100%) +INE1 (+INE2) (µF)
+INE1 (+INE2)
terminal voltage Comparison voltage with Error Amp1block -INE1 voltage (comparison voltage with Error Amp2 block -INE2 voltage)
Soft-start time
MB39A114
VREF
FB12 -INE1 -INE2 +INE1 +INE2
Error Amp1 (Error Amp2) UVLO
Soft start circuit
MB39A114
SETTING DYNAMICALLY-CONTROLLED CHARGING
With external resistor connected +INE1 terminal (pin dynamically-controlled charging mode reduce charge current keep adapter power constant when partial potential point adapter voltage (VCC) become lower -INE1 terminal voltage. Dynamically-controlled charging setting voltage -INE1
-INE1 +INE1
<Error Amp1>
MB39A114
ABOUT CONSTANT VOLTAGE CONTROL STATE DETECTION/ OVERVOLTAGE DETECTION TIMING CHART
constant voltage control state, terminal (pin constant voltage control state detection block Comp.) outputs level when voltage terminal (pin error amplifier (Error Amp3) becomes (Typ) less. When DC/DC converter output voltage enters state overvoltage higher than setting voltage, voltage terminal (pin error amplifier (Error Amp3) becomes (Typ) less. result, terminal (pin overvoltage detection block (OVComp.) outputs level. Both terminal terminal open-drain output forms
Error Amp3 Comp. VTHL
Error Amp2 Error Amp1 FB12 Comp. VTHL Comp.
Comp.
Constant current control
Constant voltage control
Overvoltage State
MB39A114
ABOUT OPERATION TIMING CHART
Error Amp2 Error Amp1 FB12
Error Amp3 Current Amp2 OUTC2
Constant voltage control
Constant current control
adapter dynamicallycontrolled charging
MB39A114
PROCESSING WITHOUT USING CURRENT AMP1 AMP2
When Current used, connect +INC1 terminal (pin 13), -INC1 terminal (pin VREF, short-circuited +INC2 terminal (pin -INC2 terminal (pin then leave OUTC1 terminal (pin OUTC terminal (pin open. Connection when Current used
-INC1 -INC2 OUTC1 OUTC2
+INC1 +INC2
"Open"
VREF
PROCESSING WITHOUT USING ERROR AMP1 AMP2
When Error used, leave FB12 terminal (pin open connect -INE1 terminal (pin -INE2 terminal (pin GND, connect +INE1 terminal (pin +INE2 terminal (pin VREF. Connection when Error used
+INE1 +INE2 -INE1 -INE2
"Open"
FB12 VREF
MB39A114
PROCESSING WITHOUT USING TERMINAL
When soft-start function used, leave terminal (pin open. Connection when soft-start time specified
"Open"
MB39A114
EQUIVALENT CIRCUIT
Reference voltage block
VREF
Control block
37.8 12.35 33.1
protection element
protection element
Soft start block
VREF (5.0
Triangular wave oscillator block
VREF (5.0
Error amplifier block (Error Amp1)
-INE1 +INE1 FB12
Error amplifier block (Error Amp2)
VREF (5.0 -INE2 FB12 VREF (5.0
Error amplifier block (Error Amp3)
-INE3
+INE2
Current detection amplifier block (Current Amp1)
Current detection amplifier block (Current Amp2)
+INC1 OUTC1
+INC2 OUTC2
-INC1
-INC1
(Continued)
MB39A114
(Continued)
comparator block
Output block
adapter detection block
-INC2
FB12
VREF (5.0
Constant voltage control state detection block
VREF (5.0
Overvoltage detection block
VREF (5.0
Bias voltage block
Output voltage switching function block
MB39A114
APPLICATION EXAMPLE
10000 -INE1 Comp.>
<Current <Error VREF
OUTC1 +INC1 -INC1
Comp.> Comp.> -INC2 (VO) <PWM Comp.> <OUT> Drive VREF <Error -2.5 -1.5 Bias Voltage UVLO VREF UVLO bias <OSC> <REF> <CTL> VREF VREF
+INE1 -INE2 4700 OUTC2 +INC2 -INC2 +INE2 FB12
<Current
-INE3
1500 4Cell 3Cell <SOFT> VREF
0.022
<Error
0.033 Battery
V/3.15
MB39A114
PARTS LIST
COMPONENT R11, Note ITEM Diode Inductor Ceramics Condenser OS-CONCeramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor SPECIFICATION -7.0 0.42 (Max) 1500 0.01 4700 0.022 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% VENDOR SANYO ROHM SUMIDA SANYO PARTS µPA2714GR MCH3401 RB053L-30 CDRH104R-150 C3225JB1E475K 20SVP22M C1608JB1H152K C1608JB1H104K C1608JB1H103K C1608JB1H472K C1608JB1H223K C1608JB1H104K SL1TTE33LOF RR0816P-473-D RR0816P-334-D RR0816P-184-D RR0816P-303-D RR0816P-223-D RR0816P-104-D RR0816P-103-D RR0816P-124-D RR0816P-303-D RR0816P-203-D RR0816P-102-D RR0816P-121-D RR0816P-204-D RR0816P-104-D
Corporation SANYO SANYO Electric Co., Ltd. ROHM ROHM CO., LTD. SUMIDA Sumida Corporation Corporation Corporation SUSUMU CO., LTD. OS-CON trademark SANYO Electric Co., Ltd.
MB39A114
SELECTION COMPONENTS
P-ch switching should rated least +20% more than input voltage. minimize continuity loss, with RDS(ON) between drain source. high input voltage high frequency operation, on-cycle switching loss will higher that power dissipation must considered. this application, µPA2714GR used. Continuity loss, on/off switching loss total loss determined following formulas. selection must ensure that peak drain current does exceed rated values. Continuity loss (ON) Duty
On-cycle swiching loss (ON) (ON) (Max) fosc
Off-cycle switching loss (OFF) (OFF) (Max) (Max) fosc
Total loss (ON) (OFF) Example Using µPA2714GR 16.8 setting Input voltage (Max) output voltage 16.8 drain current oscillation frequency fosc kHz, drain-source resistance (ON) Drain current (Max) (Max) (Max) (Max) 16.8
0.672
Drain current (Min) (Min) (Min) (Max) 16.8 10-6 0.672
MB39A114
(ON) Duty 0.018 0.672 0.109 fosc 10-9
(ON)
0.056 (Max) fosc 10-9
(OFF)
0.189 (ON) (OFF)
0.109 0.056 0.189 0.354 above power dissipation figures µPA2714GR satisfied with ample margin 12.6 setting Input voltage (Max) output voltage 12.6 drain current oscillation frequency fosc kHz, drain-source resistance (ON) Drain current (Max) (Max) (Max) (Max) 12.6
0.572
Drain current (Min) (Min) (Min) (Max) 12.6 10-6 0.572
MB39A114
(ON) Duty 0.018 0.572 0.093 fosc 10-9
(ON)
0.050 (Max) fosc 10-9
(OFF)
0.166 (ON) (OFF) 0.093 0.050 0.166
0.309 above power dissipation figures µPA2714GR satisfied with ample margin Inductor selecting inductors, course essential apply more current than rated capacity inductor, also note that lower limit ripple current critical point that reached will cause discontinuous operation considerable drop efficiency. This prevented choosing higher inductance value, which will enable continuous operation under light loads. Note that inductance value high, however, direct current resistance (DCR) increased this will also reduce efficiency. inductance must point where efficiency greatest. Note also that superimposition characteristics become worse load current value approaches rated current value inductor, that inductance value reduced ripple current increases, causing loss efficiency. selection rated current value inductance value will vary depending where point peak efficiency lies with respect load current. Inductance values determined following formulas. value load current conditions that peak peak value ripple current load current less. Inductance value (VIN
MB39A114
16.8 output Example) (VIN (Max) 16.8) 12.2
0.672
12.6 output Example) (VIN (Max) 12.6)
0.572
12.0
Inductance values derived from above formulas values that provide sufficient margin continuous operation maximum load current, which continuous operation possible light loads. therefore necessary determine load level which continuous operation becomes possible. this application, SUMIDA CDRH104R-150 used. following formula available obtain load current continuous current condition when used. value load current satisfying continuous current condition tOFF
Example) Using CDRH104R-150 (tolerance 30%) rated current 16.8 output tOFF 16.8
0.672)
0.61 12.6 output tOFF 12.6 10-6 0.572)
0.60
MB39A114
determine whether current through inductor within rated values, necessary determine peak value ripple current well peak-to-peak values ripple current that affect output ripple voltage. peak value peak-to-peak value ripple current determined following formulas. Peak Value
Peak-to-peak Value
Example) Using CDRH104R-150 (tolerance 30%) rated current Peak Value 16.8 output 0.672
16.8 10-6
12.6 output 0.572
12.6 10-6
Peak-to-peak Value 16.8 output 16.8 1.22
0.672
MB39A114
12.6 output 12.6
0.572
Flyback diode Shottky barrier diode (SBD) generally used flyback diode when reverse voltage diode less than 40V. characteristics higher speed terms faster reverse recovery time, lower forward voltage, ideal achieving high efficiency. long reverse voltage sufficiently higher than input voltage, mean current flowing during diode conduction time within mean output current level, peak current within peak surge current limits, there problem. this application ROHM RB053L-30 used. diode mean current diode peak current obtained following formulas. Diode mean current
Diode peak current IDip IDip tOFF)
Example) Using RB053L-30 reverse voltage) mean output current peak surge current VF(forward voltage) 0.42 16.8 output
0.672)
0.984
12.6 output
0.572)
1.284
MB39A114
16.8 output IDip tOFF)
12.6 output IDip tOFF)
Smoothing capacitor smoothing capacitor indispensable element reducing ripple voltage output. selecting smoothing capacitor, essential consider equivalent series resistance (ESR) allowable ripple current. Higher means higher ripple voltage, that reduce ripple voltage necessary select capacitor with ESR. However, capacitor with have substantial effects loop phase characteristics, therefore requires attention system stability. Care should also taken capacity with sufficient margin allowable ripple current. This application uses 20SVP22M (OS-CON: SANYO) ESR, capacitance value, ripple current calculated from following formulas. Equivalent series resistance 2fCL
Capacitance value ESR)
Ripple current ICLrms ICLrms (VIN
Example) Using 20SVP22M Rated voltage maximum allowable ripple current 1450 mArms Equivalent series resistance 16.8 output 2fCL 0.168 1.22 10-6
MB39A114
12.6 output 0.126
2fCL 10-6
Capacitance value 16.8 output ESR) 1.22 (0.168 1.22 0.06)
12.6 output ESR) (0.126 0.06)
11.8 Ripple current 16.8 output (VIN ICLrms 16.8) 0.672 10-6
mArms 12.6 output (VIN ICLrms 12.6) 0.572 10-6
mArms
MB39A114
REFERENCE DATA
Conversion efficiency Charging current (constant voltage mode)
Effciency
0.01
VBATT 12.6 setting (VBATT IBATT) (VAC IAC) VBATT conversion
IBATT Conversion efficiency Charging voltage (constant current mode)
Effciency
IBATT setting (VBATT IBATT) (VAC IAC) VBATT conversion
VBATT BATT voltage BATT charging current (12.6 setting)
VBATT 12.6 setting
D.C.C. Mode Dead Battery Mode
VBATT
D.C.C. Mode Dynamically-controlled charging
IBATT (Continued)
MB39A114
Conversion efficiency Charging current (constant voltage mode)
Effciency
0.01
VBATT 16.8 setting (VBATT IBATT) (VAC IAC) VBATT conversion
IBATT Conversion efficiency Charging voltage (constant current mode)
Effciency
IBATT setting (VBATT IBATT) (VAC IAC) VBATT conversion
VBATT BATT voltage BATT charging current (16.8 setting)
D.C.C. Mode Dead Battery Mode
VBATT
VBATT 16.8 setting D.C.C. Mode Dynamically-controlled charging
IBATT (Continued)
MB39A114
Switching waveform constant voltage mode (12.6 setting)
mode IBATT VBATT 12.6 setting
(µs)
Switching waveform constant current mode (12.6 setting
mode IBATT setting VBATT
(µs)
(Continued)
MB39A114
Switching waveform constant voltage mode (16.8 setting)
mode IBATT VBATT 16.8 setting
(µs)
Switching waveform constant current mode (16.8 setting
mode IBATT setting VBATT
(µs)
(Continued)
MB39A114
Soft start operating waveform constant voltage mode (12.6 setting)
mode VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Soft start operating waveform constant voltage mode (12.6 setting)
mode VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Discharge operating waveform constant voltage mode (12.6 setting)
mode VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Discharge operating waveform constant voltage mode (12.6 setting)
mode VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Soft start operating waveform constant current mode (12.6 setting)
mode 3.33 VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Soft start operating waveform constant current mode (12.6 setting)
mode 3.33 VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Discharge operating waveform constant current mode (12.6 setting)
mode 3.33 VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Discharge operating waveform constant current mode (12.6 setting)
mode 3.33 VBATT 12.6 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Soft start operating waveform constant voltage mode (16.8 setting)
mode VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Soft start operating waveform constant voltage mode (16.8 setting)
mode VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Discharge operating waveform constant voltage mode (16.8 setting)
mode VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Discharge operating waveform constant voltage mode (16.8 setting)
mode VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
Soft start operating waveform constant current mode (16.8 setting)
mode 3.33 VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Soft start operating waveform constant current mode (16.8 setting)
mode 3.33 VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
(Continued)
MB39A114
(Continued) Discharge operating waveform constant current mode (16.8 setting)
mode 3.33 VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
Discharge operating waveform constant current mode (16.8 setting)
mode 3.33 VBATT 16.8 setting
10.0
12.5
15.0
17.5
20.0
22.5
25.0 (ms)
MB39A114
USAGE PRECAUTIONS
Printed circuit board ground lines should with consideration common impedance. Take appropriate static electricity measures. Containers semiconductor materials should have anti-static protection made conductive material. After mounting, printed circuit boards should stored shipped conductive bags containers. Work platforms, tools, instruments should properly grounded. Working personnel should grounded with resistance between body ground. apply negative voltages. negative voltages below -0.3 create parasitic transistors lines, which cause abnormal operation.
ORDERING INFORMATION
Part number MB39A114PFV Package 24-pin plastic SSOP (FPT-24P-M03) Remarks
MB39A114
PACKAGE DIMENSION
24-pin plastic SSOP (FPT-24P-M03) Note Resin protrusion. (Each side +0.15 (.006) Max) Note These dimensions include resin protrusion. Note Pins width pins thickness include plating thickness. Note Pins width include cutting remainder.
0.17±0.03 (.007±.001)
*17.75±0.10(.305±.004)
5.60±0.10
INDEX
7.60±0.20 (.220±.004) (.299±.008) Details part 1.25 -0.10 .049 -.004
+0.20 +.008
(Mounting height)
0.25(.010) 0~8°
0.65(.026)
0.24 -0.07 .009 -.003
+0.08 +.003
0.13(.005)
0.50±0.20 (.020±.008) 0.60±0.15 (.024±.006)
0.10±0.10 (.004±.004) (Stand off)
0.10(.004)
2003 FUJITSU LIMITED F24018S-c-4-5
Dimensions (inches). Note: values parentheses reference values.
MB39A114
MEMO
MB39A114
MEMO
FUJITSU MICROELECTRONICS LIMITED
Shinjuku Dai-Ichi Seimei Bldg. 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0722, Japan Tel: +81-3-5322-3347 Fax: +81-3-5322-3387 http://jp.fujitsu.com/fml/en/ further information please contact: North South America FUJITSU MICROELECTRONICS AMERICA, INC. 1250 Arques Avenue, Sunnyvale, 94085-5401, U.S.A. Tel: +1-408-737-5600 Fax: +1-408-737-5999 http://www.fma.fujitsu.com/ Europe FUJITSU MICROELECTRONICS EUROPE GmbH Pittlerstrasse 63225 Langen, Germany Tel: +49-6103-690-0 Fax: +49-6103-690-122 Korea FUJITSU MICROELECTRONICS KOREA LTD. KOSMO TOWER, 1002 Daechi-Dong, Kangnam-Gu,Seoul 135-280 Korea Tel: +82-2-3484-7100 Fax: +82-2-3484-7111 http://www.fmk.fujitsu.com/ Asia Pacific FUJITSU MICROELECTRONICS ASIA LTD. Lorong Chuan, #05-08 Tech Park, Singapore 556741 Tel: +65-6281-0770 Fax: +65-6281-0220 FUJITSU MICROELECTRONICS SHANGHAI CO., LTD. Rm.3102, Bund Center, No.222 Road(E), Shanghai 200002, China Tel: +86-21-6335-1560 Fax: +86-21-6335-1605 http://cn.fujitsu.com/fmc/ FUJITSU MICROELECTRONICS PACIFIC ASIA LTD. 10/F., World Commerce Centre, Canton Road Tsimshatsui, Kowloon Hong Kong Tel: +852-2377-0226 Fax: +852-2376-3269 http://cn.fujitsu.com/fmc/tw
Rights Reserved. contents this document subject change without notice. Customers advised consult with sales representatives before ordering. information, such descriptions function application circuit examples, this document presented solely purpose reference show examples operations uses FUJITSU MICROELECTRONICS device; FUJITSU MICROELECTRONICS does warrant proper operation device with respect based such information. When develop equipment incorporating device based such information, must assume responsibility arising such information. FUJITSU MICROELECTRONICS assumes liability damages whatsoever arising information. information this document, including descriptions function schematic diagrams, shall construed license exercise intellectual property right, such patent right copyright, other right FUJITSU MICROELECTRONICS third party does FUJITSU MICROELECTRONICS warrant non-infringement third-party's intellectual property right other right using such information. FUJITSU MICROELECTRONICS assumes liability infringement intellectual property rights other rights third parties which would result from information contained herein. products described this document designed, developed manufactured contemplated general use, including without limitation, ordinary industrial use, general office use, personal use, household use, designed, developed manufactured contemplated accompanying fatal risks dangers that, unless extremely high safety secured, could have serious effect public, could lead directly death, personal injury, severe physical damage other loss (i.e., nuclear reaction control nuclear facility, aircraft flight control, traffic control, mass transport control, medical life support system, missile launch control weapon system), requiring extremely high reliability (i.e., submersible repeater artificial satellite). Please note that FUJITSU MICROELECTRONICS will liable against and/or third party claims damages arising connection with above-mentioned uses products. semiconductor devices have inherent chance failure. must protect against injury, damage loss from such failures incorporating safety design measures into your facility equipment such redundancy, fire protection, prevention over-current levels other abnormal operating conditions. Exportation/release products described this document require necessary procedures accordance with regulations Foreign Exchange Foreign Trade Control Japan and/or export control laws. company names brand names herein trademarks registered trademarks their respective owners.
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