6-Channel DC/DC Converter Control Supports synchronous rectificat
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APW7095/A
6-Channel DC/DC Converter Control
Supports synchronous rectification (CH1, CH5) Supports down up-down Zeta conversions (CH1 APW7095 CH2) Supports flyback up-down SEPIC conversions (APW7095A CH2, CH3, APW7095 CH4, CH6)
General Description
APW7095/A 6-channel, frequency-settable, voltage-mode, DC/DC control providing complete power supply solution high-performance portable digital cameras. APW7095/A uses pulse-widthmodulation (PWM) synchronous rectification high efficiency step-up, step-down, up-down inverting converters with free input output settings 4-cell 1-cell lithium-ion (Li+), dualbattery designs. APW7095/A incorporates error amplifiers, output short-circuit detection, under-voltage lockout, soft-start output switch control into chip. AP7095/A improves performance, component count, size compared conventional multichannel controllers. APW7095/A power-good indicator (PGOOD) that signals when output within ±10% voltage monitoring pin. APW7095/A available compact 48-pin plastic LQFP TQFN packages.
Supports Inverting conversion (APW7095A CH4) Start-up Voltage 1.4V (CH6) Power Supply Voltage Range 3.0V 6.5V 2.4V 6.5V
Reference Voltage Accuracy Wide Operating Frequency 100kHz 1MHz Soft-Start Function (CH1 Power Good (PGOOD) Indicator Shutdown Current Output Short-Circuit Detections Lead Free Available (RoHS Compliant)
Applications
Digital Camera Camcorder Hand-held Instrument
ANPEC reserves right make changes improve reliability manufacturability without notice, advise customers obtain latest version relevant information verify before placing orders. Copyright ANPEC Electronics Corp. Rev. Jul., 2005 www.anpec.com.tw
APW7095/A
Ordering Marking Information
APW7095/A
Lead Free Code Handling Code Temp. Range Package Code Package Code LQFP-48 TQFN-48 Operating Ambient Temp. Range Handling Code Tray Lead Free Code Lead Free Device Blank Original Device XXXXX Date Code
APW7095 QD/QB APW7095A QD/QB
APW7095 XXXXX APW7095A XXXXX
XXXXX Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials 100% matte plate termination finish; which fully compliant with RoHS compatible with both SnPb lead-free soldiering operations. ANPEC lead-free products meet exceed lead-free requirements IPC/JEDEC STD-020C classification lead-free peak reflow temperature.
Pinouts
OUT1-2 OUT1-1
OUT5-1
OUT2-2
PGOOD
OUT5-2
OUT2-1
OUT4
OUT6
PGND
PVCC
OUT3
SWOUT SWIN CIN6 DTC5 INA4 OUTA4 DTC4 CTL1,2 CSCP VREF CTL3 CTL4 CTL5
DTC1 DTC2
APW7095 Synchronous Step-down Synchronous Up-down Step-up Step-up Synchronous Step-up Step-up
APW7095A Synchronous Step-down Synchronous Step-up Step-up Inverting Synchronous Step-up Step-up
APW7095/A
DTC3
INS4
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
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APW7095/A
Description
Name SWOUT SWIN CIN6 DTC5 INA4 OUTA4 INS4 DTC4 VREF CSCP DESCRIPTION Output Switch Control Circuit Output Pin. Output Switch Control Circuit Input Pin. Error Amplifier Output Pin. Inverted Input Error Amplifier. Soft-Start Capacitor Connection Pin. Leave this "Open" disable soft-start function. Dead Time Control Pin. Connect this VREF directly when dead-time control used. Error Amplifier Output Pin. Inverted Input Error Amplifier. Inverting Amplifier Input Pin. Inverting Amplifier Output Pin. Connect this INA4 when inverting amplifier used. Error Amplifier Output Pin. Inverted Input Error Amplifier. Inverted Input Short Detection Comparator. Dead Time Control Pin. Connect this VREF directly when dead-time control used. Soft-Start Capacitor Connection Pin. Leave this "Open" disable soft-start function. Reference Voltage Output Pin. Reference Voltage Control Circuit Ground Pin. Short-Circuit Detection Capacitor Connection Pin. Connect this with shortest distance disable timer-latch short-circuit protection circuit. Reference Voltage Control Circuit Power Supply Pin. Power Supply Control Pin. Level: Operation Mode. Level: Standby Mode Control Pin. Level: Operation Mode. Level: Mode Control Pin. Level: Operation Mode. Level: Mode Control Pin. Level: Operation Mode. Level: Mode Control Pin. Level: Operation Mode. Level: Mode
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CTL1,2
CTL3
CTL4
CTL5
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
APW7095/A
Description (Cont.)
Name DTC3 DTC2 DTC1 OUT1-1 OUT1-2 OUT2-1 OUT2-2 OUT3 PVCC OUT4 PGND OUT5-1 OUT5-2 OUT6 PGOOD DESCRIPTION Oscillator Frequency Setting Resistor Connection Pin. Oscillator Frequency Setting Capacitor Connection Pin. Triangular Wave Oscillator Regulator Output Pin. Inverted Input Error Amplifier. Error Amplifier Output Pin. Dead Time Control Pin. Connect this VREF directly when dead-time control used. Inverted Input Error Amplifier. Error Amplifier Output Pin. Dead Time Control Pin. Connect this VREF directly when dead-time control used. Inverted Input Error Amplifier. Error Amplifier Output Pin. Dead Time Control Pin. Connect this VREF directly when dead-time control used. Main-side MOSFET Drive Pin. Connect OUT1-1 main MOSFET. MOSFET Drive Synchronous Rectifier. Main-side MOSFET Drive Pin. APW7095: Drive p-channel MOSFET step-down converter. APW7095A: Drive n-channel MOSFET step-up converter. MOSFET Drive Synchronous Rectifier MOSFET Drive Pin. Drive Circuit Power Supply Pin. MOSFET Drive Pin. APW7095: Drive n-channel MOSFET step-up converter. APW7095A: Drive p-channel MOSFET inverting step-up/down converter. Drive Circuit Ground Pin. Main-side MOSFET Drive Pin. Connect OUT5-1 main MOSFET. MOSFET Drive Synchronous Rectifier. MOSFET Drive Pin. Indicator Output Pin. This open-drain output used indicate status output voltage.
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
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APW7095/A
Block Diagram
PVCC
Driver
Error Amp.
DTC1 CTL1,2
1.25V
Controller
OUT1-1
Driver
OUT1-2
Comp. 1.25V x1.1 1.0V
PGOOD
Comp.
DTC1
1.25V x0.9 Driver
Error
DTC2 CTL1,2 1.25V Comp.
Drive
Amp.
Controller
OUT2-1
Driver
Drive
OUT2-2
1.0V
DTC2
Error Amp. DTC3 CTL3 1.25V Comp. Driver
Controller
OUT3
1.0V
DTC3 INA4
Amp.
OUTA4
Error DTC4 CTL4 1.25V Driver
Amp.
Controller
OUT4
INS4
1.0V
Comp.
DTC4
Error Amp.
Driver
OUT5-1
DTC5 CTL5 1.25V Comp.
Controller
Driver
OUT5-2
1.0V
DTC5
VB:2V Driver
Error Amp.
37.5k 62.5k
Controller
(Max. Duty=80%)
OUT6
CIN6
Control
Soft-Start
0.9V
Power Comp.
0.9V
UVLO
Comp.
SWOUT CTL1,2 CTL3 CTL4 CTL5 Logic
0.8V 0.3V 1.8V 1.1V 1.8V 1.1V 2.49V UVLO
PGND SWIN
Power ON/OFF
CSCP
VREF
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APW7095/A
Absolute Maximum Ratings
Symbol VPVCC Parameter Supply Voltage (VCC GND) PVCC Supply Voltage (PVCC GND) IN1~6, INA4, INS4, DTC1~5 Input Voltages CTL, CTL1~5, SWIN Input Voltages PGOOD Pull High Voltage Maximum Junction Temperature TSTG TSDR Storage Temperature Maximum Soldering Temperature, Seconds Rating -0.3 -0.3 -0.3 VCC+0.3 -0.3 -0.3 Unit
Thermal Characteristics
Symbol Parameter Junction-to-Ambient Resistance free 48-pin Plastic Value Unit
Recommended Operating Conditions
Symbol IREF VCTL FOSC CCIN6 CSCP Parameter Start-up Power Supply Voltage Operating Voltage Reference Voltage Output Current Output Current Input Voltage Control Voltage Output Current Oscillator Frequency Timing Capacitor Timing Resistor Soft-Start Capacitor Short Detection Capacitor Capacitor Operating Ambient Temperature
Condition VREF IN5, INA4, INS4 Pins (CH1 CH5) (CH6) SWOUT
APW7095/A Min. Typ. Max. -0.5 1000 0.02 0.47 0.08
Unit
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APW7095/A
Electrical Characteristics
Refer typical application circuit. These specifications apply over, 85°C, unless otherwise specified. Typical values refer 25°C.
Symbol
Parameter
Test Condition CTL, CTL1 CTL5 Rising Falling Rising IREF -30°C 85°C 3.0V 6.5V IREF -1mA VREF
ICCS Standby Current IPVCC PVCC Standby Current Nominal Supply Current Under Voltage Lockout Threshold Voltage Hysteresis Width VRST Reset Voltage Threshold Voltage Reference Voltage VREF Reference Voltage Output Voltage Temperature VREF/ Stability VREF Line Input Stability Load Load Stability Short-Circuit Output Current Soft-Start Input Standby Voltage VSTB Soft-Start Charge Current Short-Circuit Detection Threshold Voltage VSTB Input Standby Voltage Input Latch Voltage ICSCP Input Source Current Triangular Wave Oscillator Oscillator Frequency fOSC f/fdv Frequency Stability Voltage Frequency Stability f/fdt Temperature Error Amplifier (CH1 CH5) Threshold Voltage Temperature Stability Input Bias Current Voltage Gain Frequency Bandwidth Maximum Output Voltage Minimum Output Voltage ISOURCE Output Source Current ISINK Output Sink Current
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
Min. 1.25 2.46 -1.4 0.65 -1.4
APW7095/A Typ. Max. 2.49 -1.0 0.70 -1.0 1.25 4.99 1.55 2.51 -0.6 0.75 -0.6 1.27
Unit
CT=100pF, RT=18k,VB=2V 6.5V -30°C 85°C 1.45V -30°C 85°C (CH1 CH5)
1.23
1.45V 1.45V
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APW7095/A
Electrical Characteristics (Cont.)
Refer typical application circuit. These specifications apply over, CC=5V 85°C, unless otherwise specified. Typical values refer =25°C.
Symbol
Parameter
Test Condition
APW7095/A Min. Typ. Max. 1.24 0.97 1.26 4.99 4.99 1.00 0.74 -130 1.28 -1.0 1.03 0.84
Unit
Error Amplifier (CH6) Threshold Voltage VTH/ Temperature Stability Input Bias Current Voltage Gain Frequency Bandwidth Maximum Output Voltage Minimum Output Voltage ISOURCE Output Source Current Output Sink Current ISINK Inverted Amplifier (CH4) Input Offset Voltage Input Bias Current Voltage Gain Frequency Bandwidth Maximum Output Voltage Minimum Output Voltage ISOURCE Output Source Current ISINK Output Sink Current Short Detect Comparator (CH1 CH5) Threshold Voltage Input Bias Current
0.55V -30°C 85°C
0.55V 0.55V 1.25V
1.25V 1.25V (CH1 CH3, CH5) INS4 (CH4)
Short Detect Comparator (CH6) Threshold Voltage Comparator (CH1 CH5) Duty Threshold Voltage VT100 Duty 100% IDTC Input Current 0.4V (CH1 CH5) Comparator (CH6) Duty Threshold Voltage Duty Max. VTmax Maximum Duty Cycle 100pF, Controller Driver P-MOS (CH1, CH2, CH5) ISOURCE Output Source Current Duty ISINK Output Sink Current Duty -15mA Output Resistance 15mA
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
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APW7095/A
Electrical Characteristics (Cont.)
Refer typical application circuit. These specifications apply over, CC=5V 85°C, unless otherwise specified. Typical values refer =25°C.
Symbol
Parameter
Test Condition
APW7095/A Typ. Max. Min. -130 -290 0.17 -180
Unit
Controller Driver N-MOS (CH1, CH2, CH5, CH6) ISOURCE Output Source Current Duty ISINK Output Sink Current Duty -15mA Output Resistance 15mA Controller Driver P-MOS (CH3, CH4) ISOURCE Output Source Current Duty ISINK Output Sink Current Duty -15mA Output Resistance 15mA Output Switch Control (SW) SWOUT level Input Voltage SWOUT level SWIN ISWIN Input Current ISOURCE Output Source Current SWOUT Output Sink Current ISINK SWOUT -4mA Output Resistance Power Good Rising Upper Threshold Voltage Rising Lower Threshold Voltage Upper/Lower Hysteresis VPGOOD PGOOD Output Voltage Control Block (CTL, CT5) Input Voltage Input Current ICTL IPGOOD Active Mode Standby Mode
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APW7095/A
Typical Characteristics
Power Supply Current Power Supply Voltage
Reference Voltage Current Power Supply Voltage
IREF=0mA TA=25°C CTL=CTL1,2=CTL3=CTL4=CTL5=5V
Power Supply Current, CC(mA)
Reference Voltage, REF(V)
TA=25°C CTL=CTL1,2=CTL3=CTL4=CTL5=5V
Power Supply Voltage, VCC(V)
Power Supply Voltage, VCC(V)
Reference Voltage Ambient Temperature
2.56
TA=25°C CTL=CTL1,2=CTL3=CTL4=CTL5=5V IREF=0mA
Reference Voltage Control Voltage
TA=25°C IREF=0mA
Reference Voltage, REF(V)
2.54 2.52 2.50 2.48 2.46 2.44
Reference Voltage, REF(V)
Ambient Temperature, TA(°C)
Control Voltage, VCTL(V)
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APW7095/A
Typical Characteristics (Cont.)
Control Current Control Voltage Upper Lower Threshold Voltage, CT(V)
Triangular Wave Upper Lower Threshold Voltages Oscillator Frequency
1000 1200
Lower TA=25°C RT=18k Upper
Control Current, ICTL(µA)
TA=25°C
VTL, CTL1,2~CTL5
Control Voltage, VCTL(V)
Oscillator Frequency, fosc(kHz)
Oscillator Frequency Timing Capacitor
10000
Oscillator Frequency Timing Resistor
10000
Oscillator Frequency, fosc(kHz)
TA=25°C
Oscillator Frequency, fosc(kHz)
TA=25°C
1000
RT=4.3k
1000
CT=47pF
RT=18k RT=100k
CT=1000pF CT=470pF
CT=100pF CT=220pF
1000 10000
1000
Timing Capacitor, CT(pF)
Timing Resistor, RT(k)
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APW7095/A
Typical Characteristics (Cont.)
Oscillator Frequency Ambient Temperature Upper Lower Threshold Voltage, CT(V) Oscillator Frequency, fosc(kHz)
CTL=CTL1,2=CTL3=CTL4=CTL5=5V RT=18k CT=100pF
Triangular Wave Upper Lower Threshold Voltages Ambient Temperature
Lower RT=18k CT=100pF Upper
Ambient Temperature, (°C)
Ambient Temperature, (°C)
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APW7095/A
Typical Applications
1.VBAT=2.7V~6V (4-Cell Battery 1-Cell LI-ION) Buck Boost Converter (Using APW7095)
VBAT 22uF
APW7095
APM2301A OUT1-1
VBAT
7.5V/20mA
SS12
22uH
22uF 22uH SS0520
1.8V/300mA
22uF
APM2300A OUT4 INA4 0.1uF Driver Boost Controller Buck Controller Driver OUT1-2 OUTA4 INS4 VREF DTC4 VBAT 22uF 1.25V Vref 1.25V Vref DTC1 PGOOD APM2301A OUT2-1 22uH 10uF OUT5-1 APM2300A APM2300A 0.1uF
100uF 6.8K
APM2300A
VREF VBAT
22uF
22uH 5V/300mA APM2301A SS12
22uH SS12
3.3V/300mA
22uF 22uF 300K
OUT5-2 0.1uF
Driver
APM2301A
Boost Controller
Buck Controller
Driver
OUT2-2
100uF
1.25V Vref
0.1uF
100K
VREF
DTC5
1.25V Vref
DTC2
VREF SS12
VBAT 22uH APM2301A 22uF 22uF 100K SS12 309K OUT6 Driver Boost Controller Boost Controller Driver APM2300A OUT3 DTC3 1.25V Vref CTL1,2 PVCC SWIN CSCP PGND VREF 0.1uF CTL3 CTL4 CTL5 0.1uF 22uF 22uF
-10V/20mA 22uF 15V/20mA
SS12 22uF 165K VREF
APM2312 0.33uF 0.1uF
4700PF
CIN6 1.26V Vref SWOUT
0.1uF
100PF
0.22uF
VREF
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APW7095/A
Typical Applications (Cont.)
2.VBAT=1.4V~3V (2-Cell Battery) Buck Inverting Boost Converter (Using APW7095A)
VBAT APM2301A -7.5V/20mA OUT1-1 22uF SS12 0.1uF INA4 OUTA4 INS4 DTC4 VBAT 22uF 1.25V Vref 22uH 22uF SS12 DTC1 1.25V Vref PGOOD 0.1uF 22uH OUT4 Driver Inverting Controller Buck Controller 22uF 3.3V from
APW7095A
APM2301A 22uF 22uH SS0520 100uF 6.8K VREF VBAT 1.8V/300mA
APM2300A
Driver
OUT1-2
22uH 3.3V/300mA APM2301A SS12
4V/300mA 100uF
OUT2-1 OUT5-1
APM2300A 22uF 22uF APM2300A OUT5-2 VREF DTC5 1.25V Vref 1.25V Vref DTC2 0.1uF Driver Boost Controller Boost Controller Driver OUT2-2 APM2301A SS0520 22uF 22uH SS0520
APM2301A
0.1uF
VBAT 22uH APM2301A 22uF 22uF 100K SS12 309K 0.33uF SWOUT PVCC SWIN CSCP PGND VREF 0.1uF CIN6 1.26V Vref 1.25V Vref DTC3 CTL1,2 CTL3 CTL4 CTL5 OUT6 Boost Controller Boost Controller Driver OUT3 0.1uF APM2300A 22uF
3.3V
18V/3mA 22uF 15V/20mA
SS12 22uF 165K
APM2312
Driver
VREF
0.1uF
0.1uF
100PF
0.22uF
VREF
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APW7095/A
Function Descriptions
General APW7095/A provides voltage-mode feedback controls DC/DC converters(CH1 CH6). Each channel operates with error amplifier, comparator, short-circuit comparator, ON/OFF control output driver. internal temperature-compensated voltage provides reference voltages each channel. triangular-wave oscillator(CT) with timing resistor capacitor generates triangular waves each channel. inverting amplifier(CH4) cooperates with error amplifier inverting converter (with negative output voltage) Reference Voltage APW7095 outputs temperature- compensated reference voltage(2.49V) VREF pin. regulated from voltage source current max. external loads. also supplies bias internal circuitry. Triangular-wave Oscillator triangular-wave oscillator designed generates triangular oscillation signal (CT) with amplitude 0.3V~0.8V pin, providing signal CH6. oscillator frequency settable from 100kHz 1MHz timing resistor timing capacitor connected respectively from pins ground. Additional triangular oscillation signals (CT1 CT2) also internally generated with amplitude 1V~1.8V. phase with comparators CH4; phase with comparators CH1, CH5. Error Amplifier error amplifier designed with unit-gain-bandwidth 1MHz satisfy wide application requirements. works with enternal resistor-capacitor network each converter' feedback compensation. loop gain connecting feedback resistor
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
capacitor from output pin(FB) inverted input error amplifier stable operations. Inverting Amplifier (Inv Amp) inverting amplifier detects inverting DC/DC converter output voltage negative voltage) outputs control signal error amp. Channel Control Function channel control function turns on/off more channels depending states ("H" level) CTL, CTL1,2 CTL5 pins. on/off control logic shown following table:
Channel on/off Setting Tabl
tage Level CTL1,2 CTL3 CTL4 CTL5 Channel ON/OFF State Power /CH6 /CH2 OFF(Standby State)
MOSFET Drive Circuits APW7095/A uses push-pull configuration output each MOSFET driver providing large drive current MOSFET gate. following table shows MOSFETs connected drivers:
APW7095 OUT1-1 PMOS OUT1-2 NMOS OUT2-1 PMOS OUT2-2 NMOS OUT3 NMOS OUT4 NMOS OUT5-1 NMOS OUT5-2 PMOS OUT6 NMOS APW7095A OUT1-1 PMOS OUT1-2 NMOS OUT2-1 NMOS OUT2-2 PMOS OUT3 NMOS OUT4 PMOS OUT5-1 NMOS OUT5-2 PMOS OUT6 NMOS
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APW7095/A
Function Descriptions (Cont.)
Timer-latch short-circuit protection circuit short-circuit protection comparator each channel (CH1 CH5) monitors converter' output voltage input error amplifier. CH6, short-circuit comparator detects voltage output error amplifier. detected voltages falls below 1.0V detected voltage larger than 0.9V, timer circuits actuated start charging external capacitor CSCP connected from CSCP ground. When rising voltage CSCP reaches 0.7V, turns external MOSFETs pulls voltage SWOUT pin. Then latched. Applying signal from enables operation again. short-circuit detection function remains working during soft start operation CH5. Under-Voltage Lockout (UVLO) Circuit under-voltage lockout circuit monitors supply voltage prevent wrong logic control. starts operation after supply voltage rises above rising threshold. supply voltage falls below falling threshold, turns external MOSFETs pulls voltage SWOUT pin. Soft-Start Operation soft-start function controls output voltage rate rise limit current surge start-up. CH5, soft-start interval programmed soft-start capacitor, connected from ground charged internal current source. CH6, soucing current from internal resistordivider charges capacitor, CCIN6 connected from CIN6 ground, providing soft-start control. Figure show soft-start processes. figure when control pins (CTL, CTL1,2 driven high ("H" level) same time, voltage CIN6 starts rise charging capacitor CCIN6 starting soft-start operation CH6. After
Copyright ANPEC Electronics Corp. Rev. Jul., 2005
rising voltage CIN6 reaches 0.9V, reference voltage starts regulate internal source current starts charge starting soft-start operation CH5. During soft-start interval, error amplifiers compares output voltage voltage pin. When control pins (CH1, CH5) from during soft-start interval (CH1 CH5), output rises rapidly follow rising voltage pin.
Input CTL1,2 CTL3 CTL4 CTL5
Output 0.9V CIN6 Output Voltage (Vo6) 2.49V VREF 1.25V
Output Voltages (Vo1 Vo5)
Soft-Start Interval VREF Output start Soft-Start Interval
Figure Soft-start waveforms
Input CTL1,2 CTL3 CTL4 CTL5 Output 0.9V CIN6 Output Voltage (Vo6) 2.49V VREF 1.25V 1.25V
Output Voltages (Vo1 Vo3) Output Voltages (Vo4 Vo5)
(6)' (7)'
soft-start interval VREF Output start soft-start Interval CH4, soft-start Interval (6)' (7)' CH4(CH5) soft start interval CTL4 (CTL5) from during soft start interval
Figure Soft-start waveforms
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APW7095/A
Function Descriptions (Cont.)
Output Switch Control Circuit output switch control circuit outputs signal control external p-channel MOSFETs preventing reactive current flow external step-up circuits CH6. When level signal applied SWIN after releasing UVLO voltage CIN6 rises above 0.9V(typical), pulls voltage SWOUT pin, turning external p-channel MOSFETs generate output voltages.
(kHz) 900000 (pF)
Output Voltage Settings output voltage external resistor-divider connected with converter output, error amplifier input, ground. CH3,
1.25V
Error Amp.
Application Information
Soft-Start Interval Settings soft-start time depends capacitor CCIN6 determined following equation:
CCIN6 37.5 62.5 VCIN6 1.26
VB(2V) CIN6
1.25V
1.25V
Amp.
INA4
Error Amp.
OUTA4 Error Amp.
CIN6
37.5k 62.5k
1.25V
soft-start time until output voltage reaches voltage determined following equation: 0.07 CIN6 CH5, soft-start time depending capacitor determined following equation
1.26V
VB(2V) 37.5k CIN6 62.5k Error Amp.
1.25
Triangular Oscillator Frequency Setting triangular oscillator frequency timing capacitor (CT) connected timing resistor (RT) connected determined following equation:
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Time Constant Setting Timer-Latch Short-Circuit Protection Circuit time constant timer-latch short-circuit protection capacitor CSCP determined following equation
0.70
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APW7095/A
Application Information (Cont.)
Dead-Time Setting dead-time control (DTC) designed maximum duty main-side MOSFET. When device step-up inverted output based step-up step-up/down Zeta method flyback method, voltage reach exceed triangular wave voltage load fluctuation. this case, output MOSFET fixed duty prevent this, maximum duty output MOSFET. Connecting resistor- divider between VREF, pins provides voltage VDTC pin. When voltage higher than triangular wave voltage (CT1/ output transistor turned maximum duty calculated following equation:
Duty (max) VDTC VDTC
VREF
VREF VDTC DTC1
where VREF output reference voltage typical) VREF pin. amplitude triangular waves typically 0.7V from 1.8V.
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APW7095/A
Package Information
LQFP-48
DETAIL
Millimeters Min. 0.050 1.400±0.05 0.200TYP 0.127TYP 7.000±0.100 7.000±0.100 0.500TYP 9.000±0.250 9.000±0.250 0.600±0.150 1.000REF 0.100 0.0236 Max. 1.600 0.150 Min. 0.0020
Inches Max. 0.0630 0.0059 0.0551±0.0020 0.0078TYP 0.0050TYP 0.2756±0.0039 0.2756±0.0039 0.0196TYP 0.3543±0.0098 0.3543±0.0098 0.006 0.0393REF 0.0039
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APW7095/A
Package Information
TQFN-48
Millimeters Min. 0.80 0.20REF 0.18 7BSC 4.15 7BSC 4.15 0.50BSC 0.30 0.50 0.01 5.25 0.09 5.25 0.09 0.30 0.007 Max. 1.00 0.05 1.00 Min. 0.03
Inches Max. 0.04 0.002 0.04 0.008REF 0.01 0.28BSC 0.21 0.28BSC 0.21 0.02BSC 0.01
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APW7095/A
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material 90/10 63/37 SnPb), 100%Sn Meets Specification RSI86-91, ANSI/J-STD-002 Category
Reflow Condition
(IR/Convection Reflow)
Critical Zone
Ramp-up
Temperature
Tsmax
Tsmin Ramp-down Preheat
Peak
Time
Classification Reflow Profiles
Profile Feature Average ramp-up rate Preheat Temperature (Tsmin) Temperature (Tsmax) Time (min max) (ts) Time maintained above: Temperature (TL) Time (tL) Peak/Classificatioon Temperature (Tp) Time within actual Peak Temperature (tp) Ramp-down Rate Sn-Pb Eutectic Assembly 3°C/second max. 100°C 150°C 60-120 seconds 183°C 60-150 seconds table 10-30 seconds Pb-Free Assembly 3°C/second max. 150°C 200°C 60-180 seconds 217°C 60-150 seconds table 20-40 seconds
6°C/second max. 6°C/second max. minutes max. minutes max. Time 25°C Peak Temperature Notes: temperatures refer topside package .Measured body surface. (mm)
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APW7095/A
Classification Reflow Profiles(Cont.)
Table SnPb Entectic Process Package Peak Reflow Temperature Package Thickness Volume Volume <350 <2.5 +0/-5°C +0/-5°C +0/-5°C +0/-5°C
Table Pb-free Process Package Classification Reflow Temperatures Package Thickness Volume Volume Volume <350 350-2000 >2000 <1.6 +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* *Tolerance: device manufacturer/supplier shall assure process compatibility including stated classification temperature (this means Peak reflow temperature +0°C. example 260°C+0°C) rated level.
Reliability Test Program
Test item SOLDERABILITY HOLT Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B,A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD Description 245°C, 1000 Bias @125°C Hrs, 100%RH, 121°C -65°C~150°C, Cycles VHBM 2KV, 200V 10ms, 100mA
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