SLVSFU5B February 2020 – August 2021 DRV8220
PRODUCTION DATA
DRV8220 is an integrated H-bridge driver with multiple control interface options: PWM (IN1/IN2) interface (DRL and DSG packages), PH/EN (DSG only), or half-bridge interface (DSG only). To reduce area and external components on a printed circuit board, the device integrates a charge pump regulator and its capacitors. Both DSG and DRL packages support a timed auto-sleep mode which reduces microcontroller GPIO connections by eliminating a disable/sleep pin and automatically putting the device into a low-power sleep mode when the inputs remain inactive for 1-2 ms. When using autosleep for PWM or PH/EN mode, the nSLEEP pin may be tied high. The nSLEEP pin allows the device to be put to sleep in half-bridge mode where autosleep is not available.
The PWM interface is a standard 2-pin (IN1/IN2) motor drive interface. The PH/EN interface allows bi-directional PWM control using only one PWM resource from the controller. PWM and PH/EN interfaces can drive loads like brushed DC motors and bistable relays bidirectionally. Independent half-bridge mode allows for full control over each half-bridge. The half-bridges can independently control two loads with each channel acting as a high-side or low-side driver with half of the RDS(on) of full-bridge driving. Alternatively, half-bridge mode also allows the inputs and outputs to be connected together, or "paralleled," to drive a single load as a high-side or low-side driver with one-forth the RDS(on) of full-bridge driving.
The integrated protection features protect the device in the case of a system fault. These include undervoltage lockout (UVLO), overcurrent protection (OCP), and overtemperature shutdown (TSD).