ZHCSJB5B September 2019 – December 2019 DRV8904-Q1 , DRV8906-Q1 , DRV8908-Q1 , DRV8910-Q1 , DRV8912-Q1
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
The DRV89xx-Q1 family are 4.5-V to 32-V integrated multi half-bridge drivers which supports a maximum voltage of 40-V for load-dump scenario. The half-bridges are designed to support 1-A per half-bridge and 6-A from the VM/GND pins. The DRV89xx family offers drivers from 4 to 12 half-bridge outputs.
A standard 16-bit, 5-MHz serial peripheral interface (SPI) provides a simple method for configuring the various device settings and reading fault diagnostic information through an external controller. The device is also equipped with a daisy-chain functionality which allows connecting multiple devices using a single nSCS line and saving on multiple resources.
This device has 4 internal PWM generators (DRV8912-Q1 and DRV8910-Q1) or 8 internal PWM generators (DRV8908-Q1, DRV8906-Q1 and DRV8904-Q1) which can be mapped to any of the half-bridge through SPI registers. The PWM frequency (4 options) and duty (8-bit resolution) for each channel can be selected using the SPI registers. This PWM mode is useful for implementing the current control of motor or dimming control of LEDs.
The device also has numerous integrated protection features which protects the device in case of any abnormal scenario. The over-current protection (OCP) ensures the device protection in any short scenarios like the phase short, phase to ground short and phase to supply short conditions. Undervoltage lockout (UVLO) and overvoltage protection (OVP) ensures the driver operation in fluctuating voltages to support the crank-start and load-dump scenario in automotive applications. In addition to this, the open-load detection (OLD) feature ensure the proper load connection. All devices support active OLD, low-current OLD, and negative-current OLD. Passive OLD is only supported on DRV8908-Q1, DRV8906-Q1 and DRV8904-Q1 devices. Device faults are indicated on the nFAULT pin, and detailed information is available in the device SPI registers.
The device integrates a spread spectrum clocking feature for both the internal digital oscillator and internal charge pump. This feature combined with programmable output slew-rate control minimizes the radiated emissions from the device.
The device is available in a 24-pin HTSSOP package with a thermal pad.