(800) 546-APEX (800) 546-2739 FEATURES IGBT OUTPUTS WID

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(800) 546-APEX (800) 546-2739 FEATURES IGBT OUTPUTS WID

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(800) 546-APEX
(800) 546-2739
FEATURES
IGBT OUTPUTS WIDE SUPPLY RANGE-16-500V 100° CASE PROTECTION CIRCUITS SYNCHRONIZED EXTERNAL OSCILLATOR FLEXIBLE FREQUENCY CONTROL
TE9493
APPLICATIONS
MOTORS REACTIVE LOADS MAGNETIC BEARINGS LARGE PIEZO ELEMENTS OFF-LINE DRIVERS WELD CONTROLLER
EXTERNAL CONNECTIONS
DESCRIPTION
SA08 pulse width modulation amplifier that supply 10KW load. internal oscillator requires external components. clock input stage divides oscillator frequency two, which provides switching frequency 22.5 kHz. oscillator also used synchronize multiple amplifiers. Current sensing provided each half bridge giving amplitude direction data. shutdown input turns four drivers H-bridge output. high side current limit programmable side current limit protect amplifier from shorts supply ground addition load shorts. H-bridge output IGBTs protected from thermal overloads directly sensing temperature die. 12-pin hermetic MO-127 power package occupies only square inches board space.
ISENSE +PWM FLAG ILIM/SHDN
VIEW
SENSE
Case tied Allow current case. Bypassing supplies required. Package Apex MO-127 (STD). Outline Dimensions/Packages Apex data book. *See text. +PWM goes more positive, duty cycle increases.
BLOCK DIAGRAM TYPICAL APPLICATION MOTOR TORQUE CONTROL
+PWM -PWM/RAMP 470pF OUTPUT DRIVERS CURRENT LIMIT
MOTOR SHUTDOWN CONTROL SENSE ILIM/SHDN SENSE RSENSE .01µF
CONTROL SIGNAL
RSENSE
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, SUPPLY VOLTAGE, POWER DISSIPATION, internal1 TEMPERATURE, solder TEMPERATURE, junction2 TEMPERATURE, storage OPERATING TEMPERATURE RANGE, case INPUT VOLTAGE, +PWM INPUT VOLTAGE, ILIM TEST CONDITIONS2
ABSOLUTE MAXIMUM RATINGS SPECIFICATIONS
SPECIFICATIONS
PARAMETER CLOCK (CLK) OUT, high level4 OUT, level4 level4 high level4 FREQUENCY ANALOG INPUT (+PWM) center voltage voltage FLAG FLAG, high level FLAG, level OUTPUT TOTAL DROP EFFICIENCY, output SWITCHING FREQUENCY CURRENT, continuous4 CURRENT, peak4 POWER SUPPLY VOLTAGE, VOLTAGE, CURRENT, CURRENT, VCC, shutdown CURRENT, ILIM/SHUTDOWN TRIP POINT INPUT CURRENT THERMAL3 RESISTANCE, junction case RESISTANCE, junction TEMPERATURE RANGE, case
500V 250W 300°C 150°C +150°C +125°C +11V +10V UNITS
IOUT IOUT
44.10
45.00
46.90
0/100% modulation
380V 100°C case
22.05 22.50 22.95
Full temperature range Full temperature range IOUT Load
Full temperature range, each Full temperature range Meets full range specifications
°C/W °C/W
NOTES:
Each active output transistors dissipate 125W. Unless otherwise noted: 25°C, typical specification. 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. 100% duty cycle required VS(MIN) SA08 constructed from static sensitive components. handling procedures must observed. internal substrate contains beryllia (BeO). break seal. accidentally broken, crush, machine, subject temperatures excess 850°C avoid generating toxic fumes.
CAUTION
APEX MICROTECHNOLOGY CORPORATION 5980 NORTH SHANNON ROAD TUCSON, ARIZONA 85741 APPLICATIONS HOTLINE: (800) 546-2739
TYPICAL PERFORMANCE GRAPHS
CLOCK LOADING
NORMALIZED FREQUENCY, NORMALIZED FREQUENCY,
INTERNAL POWER DISSIPATION,
POWER DERATING
EACH ACTIVE OUTPUT TRANSISTOR
CLOCK FREQUENCY OVER TEMP
102.0 101.5 101.0 100.5 99.5 99.0 98.5 98.0 CASE TEMPERATURE, (°C)
NOMINAL 45kHz 100K CLOCK LOAD RESISTANCE,
CASE TEMPERATURE, (°C)
REVERSE DIODE
FORWARD CURRENT, TOTAL VOLTAGE DROP,
TOTAL VOLTAGE DROP
CASE TEMPERATURE 100°C 25°C
100°C DIODE FORWARD VOLTAGE DROP, 25°C
OUTPUT CURRENT, I(A)
CONTINUOUS AMPS
CONTINUOUS AMPS,
DUTY CYCLE ANALOG INPUT
DUTY CYCLE,
NORMALIZED QUIESCENT CURRENT,
QUIESCENT CURRENT
CASE TEMPERATURE, (°C)
NORMALIZED QUIESCENT CURRENT,
ANALOG INPUT,
SWITCHING FREQUENCY, (kHz)
NORMALIZED QUIESCENT CURRENT,
CASE TEMPERATURE, (°C) SHUTDOWN OPERATION NORMAL OPERATION 22.5
NORMALIZED QUIESCENT CURRENT,
QUIESCENT CURRENT
QUIESCENT VOLTAGE
QUIESCENT FREQUENCY
SWITCHING FREQUENCY, (kHz)
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
OPERATING CONSIDERATIONS
limit threshold which only FILTER LIMIT CFILTER should SENSE adjusted reduce switching noise well LIMIT prevent false current SHUTDOWN limiting. LIMIT/SHDN SIGNAL FILTER level plus 0/10V noise peak will FILTER IN4148 determine current limiting value. FIGURE CURRENT LIMIT WITH most switchSHUTDOWN CURRENT MODE. circuits difficult determine true noise amplitude without careful attention grounding oscilloscope probe. shortest possible ground lead probe connect exactly terminal amplifier. Suggested starting values CFILTER .1uF, RFILTER
SENSE
GENERAL
Please read Application Note "PWM Basics". Refer Application Note "General Operating Considerations" helpful information regarding power supplies, heat sinking mounting. Visit www.apexmicrotech.com design tools that help automate filter design; heat sink selection; Apex's complete Application Notes library; Technical Seminar Workbook; Evaluation Kits.
CLOCK CIRCUIT RAMP GENERATOR
clock frequency internally frequency approximately 45kHz. will normally tied pin. clock divided applied network which produces ramp signal. external clock signal applied synchronization purposes, must
FLAG OUTPUT
Whenever SA08 detected fault condition, flag output high (10V). When programmable side current limit exceeded, FLAG output will high. FLAG output will reset next clock cycle. This reflects pulse-by-pulse current limiting feature. When internally-set high side current limit tripped thermal limit reached, FLAG output latched high. PROTECTION CIRCUITS below.
PROTECTION CIRCUITS
fixed internal current limit senses high side current. Should either outputs shorted ground high side current limit will latch output transistors. temperature output transistors also monitored. Should fault condition raise temperature output transistors 165°C thermal protection circuit latch output transistors. latched condition cleared either recycling power toggling LIMIT/SHDN input with pulse. Figures outputs will remain long shutdown pulse high (10V).
required value RLIMIT voltage mode calculated RLIMIT ILIMIT where RLIMIT required resistor value, ILIMIT maximum desired current. current mode required value each RLIMIT times this value since sense voltage divided down (see Figure RSHDN used will further divide down sense voltage. shutdown divider network will also have effect filtering circuit.
BYPASSING
Adequate bypassing power supplies required proper operation. Failure cause erratic efficiency operation well excessive ringing outputs. supply should bypassed with least ceramic capacitor parallel with another capacitor least 10µF output current. Capacitor types rated switching applications only types that should considered. bypass capacitors must physically connected directly power supply pins. Even inch lead length will cause excessive ringing outputs. This very fast switching times inductance lead connection. bypassing requirements supply less stringent, still necessary. .1µF .47µF ceramic capacitor connected directly will suffice.
CURRENT LIMIT
There load current sensing pins, SENSE SENSE pins shorted voltage mode connection both must used current mode connection (see figures recommended that RLIMIT resistors non-inductive. Load current flows SENSE pins. avoid errors lead lengths connect LIMIT/ SHDN directly LIMIT resistors SENSE (through filter network shutdown LIMIT SENSE vider resistor) connect RLIMIT resistors SHUTDOWN directly pin. LIMIT/SHDN FILTER SIGNAL Switching noise 0/10V spikes will invariably FILTER IN4148 found SENSE pins. noise spikes could trip current FIGURE CURRENT LIMIT WITH
SHUTDOWN VOLTAGE MODE.
STARTUP CONDITIONS
high side IGBT output bridge circuit driven bootstrap circuit charge pump arrangement. order circuit produce 100% duty cycle indefinitely side each half bridge circuit must have previously been condition. This means, turn, that input signal SA08 startup demanding 100% duty cycle, output follow command tri-state condition. ramp signal must cross input signal some point correctly determine output state. After ramp crosses input signal level time, output state will correct thereafter.
This data sheet been carefully checked believed reliable, however, responsibility assumed possible inaccuracies omissions. specifications subject change without notice. SA08U REV. MARCH 2001 2001 Apex Microtechnology Corp.

(800) 546-APEX (800) 546-2739 FEATURES IGBT OUTPUTS WID

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