The device needs only a single supply voltage connected to the VM pins.
- The VM pin provides the power supply to the
H-Bridges.
- An internal voltage regulator provides a 5V
supply (DVDD) for the digital and low-voltage analog circuitry. The DVDD pin is
not recommended to be used as a voltage source for external circuitry.
- An external low-voltage supply can be connected
to the VCC pin to power the internal circuitry. A 0.1µF decoupling capacitor is
placed close to the VCC pin to provide a constant voltage during transient.
- Additionally, the high-side gate drive requires a
higher voltage supply, which is generated by built-in charge pump requiring
external capacitors.