... relationship between the chip with 43 A~ 70 A smart car and a is enough; 3, and single chip microcomputer 5 v ... display; 5, can welding heat sink; 6, single chip microcomputer to drive module with four with line can (GND, 5 v, PWM1, PWM2 ... supply drive power; 8, isolation chip 5 v power supply (with single-chip microcomputer Shared 5 v); 9, power support 5.5 ...