EVAL6491HB STMicroelectronics

EVAL6491HB Demonstration board for L6491 gate driver with smartSD Data brief Description The L6491 is a high voltage device manufactured with the BCD6 OFF-LINE technology. It is a single-chip half-bridge gate driver for N-channel power MOSFETs or IGBTs, with a 4 A sink and source current capability. The high-side (floating) section is designed to stand a voltage rail up to 600 V. The logic inputs are CMOS/TTL compatible down to 3.3 V for easy interfacing a microcontroller or DSP. An integrated comparator is available for fast overcurrent protection, and is also suited for other functions such overtemperature, etc. The EVAL6491HB board allows evaluating all of the L6491 features while driving a power switch Features with voltage rating up to 600 V in TO-220 or TO-247 packages. High voltage rail up to 600 V dV/dt immunity: 50 V/ns in full temperature The board allows easily selecting and modifying range the values of relevant external components in order to ease driver s performance evaluation Driver current capability: 4 A source/sink under different applicative conditions and fine pre- Comparator for fault protections tuning of final application s components. Smart shutdown function Integrated bootstrap diode Adjustable deadtime Interlocking function Switching times 15 ns rise/fall with 1 nF load 3.3 V, 5 V TTL/CMOS inputs with hysteresis Compact and simplified layout Bill of material reduction Effective fault protection Flexible, easy and fast design April 2015 DocID027733 Rev 1 1/7 For further information contact your local STMicroelectronics sales office. www.st.com% / . V 7 Q 7 3 L L 53 53 )*/ .) 18 7S 3 -04&% -04&% 01&/ L +1 +1 L 3 +1 Q 7 4&/4& %5 7S 3 L 3 7QV -*/ .- 18 3 2 6 (- % 9 - 1(/% -7 -7 1&/ +1 4(/% % 3 % / . 7QV 7DD 1 3 1 1 %5 O 7 %5 % / . 065 7DD 065 O 7 3 )*/ )*/ 7DD )7( 2 )7( 4% 0% 4% () % 9 - PPU -*/ L -*/ - 3 % 3 7QV )7 V 7 % / . % 3 7DD 7DD 7QV (/% 7 7QV 7QV V 065 7DD 7DD .) 18 .) 18 .- 18 .- 18 4% 4% + )7 )7 + + Schematic diagram EVAL6491HB Schematic diagram Figure 1. EVAL6491HB circuit schematic 5 5 5 5 ( FG ( GF 0 7DD 7QV 2/7 DocID027733 Rev 1. O 7 V 7 O 7 O 7 O 7 +1 01&/ 8 3 8 3 8 *( 5 .04 &5 *( 5 .04 &5 0 PS 0 0 PS 0 3 8 3 8 3