EVAL6393FB STMicroelectronics

EVAL6393FB Low voltage full-bridge demonstration board based on the L6393 advanced high voltage gate driver Data brief Features ~150 W drive capability (50 V - 3.0 A ) r.m.s. 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 EVAL6393FB Description 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. October 2012 Doc ID 023821 Rev 1 1/9 For further information contact your local STMicroelectronics sales office. www.st.com 9Board description EVAL6393FB 1 Board description Table 1. EVAL6393FB electrical specifications Parameter Value (1) (2) Supply voltage range (VS) 32 V to 52 V DC RMS output current rating (OUT x) Up to 3.0 A (3) Driver supply voltage (V ) 10 to 20 V CC Logic control signals 0 to + 15 V Operating temperature range -40 to +125 C 1. Minimum VS voltage restriction is due to biasing current of the Zener diode used to generate V . This limit cc can be decreased by changing R29 value or by opening JP3 and providing an externally generated V cc through connector J1. 2. Maximum VS voltage limit can be increased up to 580 V by replacing the power switches and bulk capacitor C15 with components with adequate voltage ratings. Resistor R29 should be removed and an externally generated V should be provided through connector J1. cc 3. When externally supplied through J1 with JP3 opened, otherwise V = 12 V. cc Figure 1. Jumper and connector location BUS voltage Peak current connector setting trimmer On-board Vcc generation jumper Off-time setting trimmer Control signals and Slow/Fast Decay optional external Vcc selection jumpers connector Load connector AM12618v1 2/9 Doc ID 023821 Rev 1