SLOSE71 April 2020 – December 2020 DRV8955
PRODUCTION DATA
The DRV8955 supports a wide 4.5 V to 48 V supply voltage and can drive up to four solenoid loads.
A simple PWM interface option allows easy interfacing to the outputs. A MODE pin allows configuring the half-bridges to drive one, two or four solenoid loads, or allows independent high-z control for each half-bridge. When the half-bridges are paralleled to drive one or two loads, the device can support higher output currents. The trip point for current regulation is controlled by the value of the VREF pin voltage. The PWM off-time, tOFF, can be adjusted to 7, 16, 24, or 32 μs. A low-power sleep mode is included which lets the system save power when not driving the load.
A variety of integrated protection features protect the device in the case of a system fault. These include undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and overtemperature shutdown (TSD). Fault conditions are indicated on the nFAULT pin.