(800) 546-APEX (800) 546-2739 FEATURES SINGLE SUPPLY OP

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(800) 546-APEX (800) 546-2739 FEATURES SINGLE SUPPLY OP

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(800) 546-APEX
(800) 546-2739
FEATURES
SINGLE SUPPLY OPERATION WIDE SUPPLY RANGE 16-100V CONTINUOUS OUTPUT PROGRAMMABLE CURRENT LIMIT SHUTDOWN CONTROL HERMETIC PACKAGE FOOTPRINT
TE9493
APPLICATIONS
BRUSH TYPE MOTOR CONTROL PELTIER CONTROL REACTIVE LOADS MAGNETIC COILS (MRI) ACTIVE MAGNETIC BEARING VIBRATION CANCELLING
TYPICAL APPLICATION
DESCRIPTION
SA01 amplifier pulse width modulation amplifier that supply load. full bridge output amplifier operated from single power supply over wide range voltages. error amplifier included which provide gain velocity control loop brush type motor control applications. Current limit programmable single resistor. shutdown input turns four drivers bridge output. precision reference output provided offsetting error amplifier. error amplifier then scaled standard input signals. amplifier protected from shorts supply ground. bridge output MOSFETs protected from thermal overloads directly sensing temperature die. 10-pin hermetic power package occupies only square inches board space isolated.
+VIN .1µF 7.5V SA01 SHDN/ SENSE FILTER RFILTER SHUT DOWN CFILTER RLIMIT
BLOCK DIAGRAM
7.5V SUP/ OUTPUT DRIVERS CURRENT LIMIT SHUTDOWN CONTROL
Motor Driver With Tach Feedback
EXTERNALCONNECTIONS
Package: PD10/60S
CFILTER
ERROR
ISENSE
SHDN/ FILTER
.1µF
VIEW
SHDN/ FILTER
FILTER
SENSE
GOES MORE POSITIVE, HIGH STATE INCREASES HIGH STATE DECREASES.
LIMIT
LIMIT
ILIMIT
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, OUTPUT CURRENT, peak POWER DISSIPATION, internal TEMPERATURE, solder TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case SHUTDOWN VOLTAGE REFERENCE LOAD CURRENT ERROR INPUT TEST CONDITIONS2
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
SPECIFICATIONS
PARAMETER ERROR OFFSET VOLTAGE BIAS CURRENT OFFSET CURRENT COMMON MODE VOLTAGE RANGE4 COMMON MODE REJECTION, SLEW RATE OPEN LOOP GAIN4 GAIN BANDWIDTH PRODUCT OUTPUT TOTAL EFFICIENCY, OUTPUT SWITCHING FREQUENCY CURRENT, continuous4 CURRENT, peak4 REFERENCE VOLTAGE VOLTAGE TEMP4 OUTPUT CURRENT LOAD REGULATION4 LINE REGULATION POWER SUPPLY VOLTAGE CURRENT CURRENT, shutdown SHUTDOWN TRIP POINT INPUT CURRENT THERMAL2 RESISTANCE, junction case RESISTANCE, junction TEMPERATURE RANGE, case 100V
100V 185W1 300°C 150°C +150°C +125°C 10mA +12V UNITS
V/µS
35.3
48.7
IREF Full temperature range
7.46
7.50
7.54
PPM/°C PPM/mA PPM/V
Full temperature range IOUT IREF IREF
Full temp range, each transistor Full temperature range Meets full range specifications
°C/W °C/W
NOTES: Each active output transistors dissipate 125W, however N-channel will about total dissipated power. Internal connection resistance .05. Unless otherwise noted: 25°C. Long term operation maximum junction temperature will result reduced product life. Derate internal power dissipation achieve high MTTF. guidance, refer heatsink data sheet. Guaranteed tested.
CAUTION
SA01 constructed from MOSFET transistors. handling procedures must observed. internal substrate contains beryllia (BeO). break seal. accidentally broken, crush, machine, subject temperatures excess 850°C avoid generating toxic fumes.
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 APPLICATIONS HOTLINE: (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
NORMALIZED SWITCHING FREQUENCY,
NORMALIZED CLOCK DRIFT
CASE TEMP. 60°C CASE TEMP. 85°C
INTERNAL POWER DISSIPATION,
POWER DERATING
VOLTAGE DROP
VOLTAGE DROP,
EACH OUTPUT TRANSISTOR CASE TEMPERATURE, (°C)
CASE TEMP. 110°C CASE TEMP. 35°C OUTPUT CURRENT,
CASE TEMPERATURE, (°C)
OPEN LOOP GAIN RESPONSE, (dB)
MAXIMUM CONTINUOUS OUTPUT
ERROR SMALL SIGNAL GAIN
OPEN LOOP PHASE,
100K FREQUENCY, (Hz)
ERROR SMALL SIGNAL PHASE
OUTPUT CURRENT
150°C CASE TEMPERATURE, (°C)
-135
-180 100K FREQUENCY, (Hz)
SOURCE DRAIN DIODE VOLTAGE
25°C
VOLTAGE DROP, [AOUT-BOUT]
FLYBACK DIODES
RESISTANCE
BRIDGED OUTPUT SWING
10.0 6.00 2.00 1.00 0.40 0.10 0.06 0.02 JUNCTION TEMPERATURE 85°C 25°C 125°C
RESISTANCE,
N-CH
ANNE
N-CHAN SENSE
FLYBACK CURRENT,
CASE TEMPERATURE, (°C)
6.010.0 40.0 BRIDGE DRIVE CURRENT, IOUT
100V
NORMALIZED REFERENCE, VREF,
QUIESCENT CURRENT DRIFT
QUIESCENT CURRENT, (mA)
NORMALIZED REFERENCE DRIFT
1.0004
DUTY CYCLE
1.0000
PERCENT HIGH
1.0002
0.9998
CASE TEMPERATURE, (°C)
0.9996 CASE TEMPERATURE, (°C)
CONTROL,
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
GENERAL
Helpful information about power supplies, heatsinking mounting found "General Operating Considerations" section Apex data book. information package outline, heatsinks, mounting hardware "Package Outlines" "Accessories" section data book. Also Application Note "PWM Basics."
OPERATING CONSIDERATIONS
PROTECTION CIRCUITS
There conditions which will latch output transistors off. first these conditions activation high side current limit. Specifically, current (+VS) monitored. trip level about response time about 5us. actual currents increase response time decreases. external fault generally associated with this condition shorting outputs ground. However, load fault also activate this high side current limit current rise time less than response time filter discussed under "Current Limit". second these conditions activation four output transistor overtemperature sensors about 165°C. Ambient temperature, flow, amplifier mounting problems previously mentioned high current faults contribute junction temperature. When either these protection circuits activated, root fault must corrected power cycled restore normal operation.
CURRENT LIMIT
current limit function sets peak limit current flow (Isense). This limits load current also limits current event short either output +Vs. This circuit trip anytime during conduction period will hold output transistors remainder that conduction period. proper operation current limit sense resistor must connected shown external connection diagram. recommended that resistor non-inductive type. Load current flows current flows (Shutdown/ filter) error will introduced length connection However, voltage compared (pin error could introduced grounded RLIMIT directly tied Good circuit board layout practice would connect RLIMIT directly between pins Switching noise spikes will invariably found amplitude duration will load dependent. noise spikes could trip current limit threshold which only RFILTER CFILTER should adjusted reduce switching noise well below prevent false current limiting. level plus noise peak will determine current limiting value. Suggested starting values CFILTER .01µF, RFILTER required value RLIMIT calculated RLIMIT ILIMIT where RLIMIT required resistor value, ILIMIT maximum desired current.
DEAD TIME
There dead time between each output. dead time removes possibility momentary conduction path through upper lower transistors each half bridge output during switching interval. During dead time output transistors off. Noise flyback observed outputs during this time high impedance outputs state. This will vary with nature load.
.1µF TACH SIGNAL FIGURE
SHUTDOWN
shutdown circuitry makes internal current limiting circuitry. functions externally combined shown below Figure RLIMIT will normally very value resistor considered zero this application. RFILTER form voltage divider shutdown signal. After suitable noise filter designed current limit adjust value give shutdown signal when shutdown signal high. This means will reach trip point about time constant with output current less time output current increases. voltage referenced (GND). CFILTER SHDN/FILTER will filter both curSHUTDOWN rent limit noise spikes SIGNAL shutdown signal. Shutdown curCFILTER FILTER rent limit operate each cycle inter8 switching rate. SENSE long shutdown RLIMIT signal high output will disabled.
FIGURE
ERROR AMPLIFIER
internal error amplifier operational amplifier. highest loop accuracy best configure integrator (See Figure Feedback adjusted with appropriate poles zeroes properly compensate velocity loop optimum stability. operated from single supply voltage generated internally. non-inverting input does have common mode range which includes ground. used with reference voltage provided bias non-inverting input volts, which approximately half voltage supplied internally amp. Similarly, parallel combination selected bias inverting input also volts. Resistors must matched. Likewise parallel combination must matched with source impedances tach signal source affect matching should considered design.
This data sheet been carefully checked believed reliable, however, responsibility assumed possible inaccuracies omissions. specifications subject change without notice. SA01U REV. MARCH 1999 1999 Apex Microtechnology Corp.

(800) 546-APEX (800) 546-2739 FEATURES SINGLE SUPPLY OP

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