DRV592_12 Datasheet, PDF (1/16 Pages) Texas Instruments – +- 3-A HIGH EFFICIENCY H-BRIDGE

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DRV592
SLOS390A – NOVEMBER 2001– REVISED MAY 2002
±3ĆA HIGHĆEFFICIENCY HĆBRIDGE
(REQUIRES EXTERNAL PWM)
FEATURES
D ±3-A Maximum Output Current
D Requires External PWM From DC to 1 MHz
With TTL-Compatible Voltages for High and
Low
D Low Supply Voltage Operation: 2.8 V to 5.5 V
D High Efficiency Generates Less Heat
D Over-Current and Thermal Protection
D Fault Indicators for Over-Current, Thermal
and Under-Voltage Conditions
D 9×9 mm PowerPAD Quad Flatpack
APPLICATIONS
D Thermoelectric Cooler (TEC) Driver
D Laser Diode Biasing
DESCRIPTION
The DRV592 is a high-efficiency, high-current H-bridge
ideal for driving a wide variety of thermoelectric cooler
elements in systems powered from 2.8 V to 5.5 V. Low
output stage on-resistance significantly decreases
power dissipation in the amplifier.
The DRV592 may be driven from any external PWM
generator such as a DSP, a microcontroller, or a FPGA.
The frequency may vary from dc (i.e., on or off) to
1 MHz. The inputs are compatible with TTL logic levels.
The DRV592 is internally protected against thermal and
current overloads. Logic-level fault indicators signal
when the junction temperature has reached
approximately 130°C to allow for system-level
shutdown before the amplifier’s internal thermal
shutdown circuitry activates. The fault indicators also
signal when an over-current event has occurred. If the
over-current circuitry is tripped, the DRV592
automatically resets.
VDD
10 µF
1 µF
To HI-Z Control
To Fault Monitor
PWM Input 1
PWM Input 2
Shutdown Control
1 µF
AVDD
AGND (Connect to PowerPAD)
HI-Z
FAULT1
FAULT0
IN+
IN–
SHUTDOWN
OUT+
PGND
PGND
PGND
PGND
PGND
PGND
OUT–
10 µH
10 µF
To TEC or Laser
Diode Anode
1 µF
10 µH
10 µF
To TEC or Laser
Diode Cathode
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2002, Texas Instruments Incorporated