STMicroelectronics Low voltage full bridge reference design board featuring L6393 advanced high-voltage gate driver EVAL EVAL6393FB Data Sheet

For further information contact your local STMicroelectronics sales office.

October 2012

Doc ID 023821 Rev 1

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Low voltage full-bridge demonstration board based on the L6393

 advanced high voltage gate driver

■

~150 W drive capability (50 V - 3.0 A

r.m.s.

)

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Very low area occupation, all devices and 
power switches in SMD package (no heatsink)

■

Fast-decay or slow-decay on-board constant 
off-time peak current control

■

PWM voltage mode control with overcurrent 
protection possible via external logic signals

■

Driver supply voltage on-board generation 
directly from BUS voltage

■

Carefully optimized layout

The EVAL6393FB demonstrates how to use two 
L6393 drivers to drive a single-phase load 
through a full-bridge topology. This allows both 
the direction and the value of the current flowing 
into the load to be controlled. Typical loads, which 
can be effectively driven by using this topology, 
are single-phase BLDC motors, fans and HID 
lamps. Thanks to the integrated features of the 
L6393, the board has a very small footprint and 
an optimized layout, and can be simply run by 
applying the BUS voltage and a direction signal.