SLVSGV9 august 2023 DRV8213
PRODUCTION DATA
DRV8213 is a full-bridge driver with integrated current sense, current regulation, and current sense output. To reduce area and external components on a printed circuit board, the device integrates a charge pump regulator and capacitors. In the WQFN (RTE) package, the separate full-bridge (VM) and logic (VCC) supplies allow the full-bridge supply voltage to drop to 0 V without significant impact to RDS(ON) and without triggering UVLO as long as the VCC supply is stable. In the WSON (DSG) package, a single power input (VM) serves as both device power and the full-bridge supply for small design size. An auto-sleep mode reduces microcontroller GPIO connections by eliminating a disable/sleep pin and automatically putting the device into a low-power sleep mode when the PWM inputs remain low for tAUTOSLEEP.
The DRV8213 uses a standard 2-pin (IN1/IN2) PWM interface. The IN1/IN2 pins control the full bridge, which consists of four N-channel MOSFETs that have a typical RDS(ON) of 240 mΩ (including one high-side and one low-side FET). Motor speed can be controlled with pulse-width modulation (PWM), at frequencies between 0 to 100 kHz.
The integrated current regulation feature limits motor current to a predefined maximum based on the VREF and IPROPI settings. The IPROPI signal can provide current feedback to a microcontroller during both the drive and brake/slow-decay states of the H-bridge.
The gain select (GAINSEL) feature allows high accuracy current sensing down to 10 mA average motor current. The RDS(ON) of the low-side MOSFET and the overcurrent protection limit changes according to the GAINSEL setting, thereby leading to optimized answers for different applications and different values of motor current.
In the WQFN package (RTE), the DRV8213 has additional pins to configure a hardware stall detection feature based on the IPROPI current sensing signal.
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).