General description

UM0759

8/26

Doc ID 16058 Rev 2

3.1.2

Battery power supply

There is one battery supply connectors on the board, with a trasil diode for ISO pulse

voltage protection (39 V). C1, C2 is designed for power supply filter purpose and C3 is the

charge pump capacitor. See below the schematic of this part.

Figure 6.

L9958 evaluation board power supply

3.1.3

L9958 H-bridge DC motor driver

There is L9958 H-bridge DC motor driver on the board, can achieve PWM control, SPI

diagnostic, DC motor drive functions.

C4,C5,C6 is designed as decoupling capacitor for VDDIO and VDD.

Figure 7.

L9958 H-bridge DC motor driver overview

GND

VBattery

L9958