EVAL6235N STMicroelectronics

EVAL6235N Demonstration board for L6235 DMOS driver for 3-phase brushless DC motor Data brief Description The L6235 device is a DMOS fully integrated 3-phase motor driver with overcurrent protection. Realized in BCD technology, the device combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a 3-phase BLDC motor including: a 3-phase DMOS bridge, a constant off-time PWM current controller and the decoding logic for single ended hall sensors that generates the required sequence for the power stage. Available in a PowerDIP24 (20 + 2 + 2) package, Features the L6235 device features non-dissipative overcurrent protection on the high-side power Operating supply voltage from 8 to 52 V MOSFETs and the thermal shutdown. 5.6 A output peak current (2.8 A DC) R 0.3 typ. value at T = 25 C DS(ON) j Operating frequency up to 100 KHz Non-dissipative overcurrent detection and protection Diagnostic output Constant t PWM current controller OFF Slow decay synchronous rectification 60 and 120 hall effect decoding logic Brake function Tachometer output for speed loop Cross-conduction protection Thermal shutdown Undervoltage lockout Integrated fast freewheeling diodes April 2015 DocID027735 Rev 1 1/8 For further information contact your local STMicroelectronics sales office. www.st.co. 8 3 3 7 3 3 -. -. -. -. 73& 6 6 3 3 66 3 3 7 3 3 3 3 3 3 7 ) ) 3 ) 1VMM6Q 1VMMVQ / / ) 73& ) ) ) 8 8 3 3 3 3 7 1VMM6Q - - % 3& / / 3 3 7 3& ) ) 3 3 ) ) 3 3 ) ) - / / / & -& % % 3 3 6 6 / / 7 3& 7 1VMM6Q 3 3 3 3 % % % % 1VMM VQ / / Schematic diagram EVAL6235N 1 Schematic diagram Figure 1. EVAL6235N circuit schematic %( 3 */) & -& 3 ,& 5* 1 */ 1 1 0 .1 4&/4& 0 5 & -& 3 ,& 83 3&8 4 4 3&7 3 ,& &/ 532 41&&% %( 3 ,& -- 0/ 2/8 DocID027735 Rev 1 +1 +1 +1 +1 065 8 3&7 3 065 065 */5 */5 1 1 1 1 1 1 8 3&8 3 1 51 51 51 3 3 3 3 3 3 8 %( (/% (/% (/% 73& (/% 3 0 7 005 ) 7 1 3 16-4& 74 4&/4& 74 3 3 3 3 3 3 4&/4&