SLVSFV6B August 2022 – October 2023 DRV8962
PRODUCTION DATA
The DRV8962 is a four-channel half-bridge driver that operates from 4.5 V to 65 V and supports a wide range of load currents for various types of loads. The device integrates four half-bridge output power stages. The device integrates a charge pump regulator to support efficient high-side N-channel MOSFETs and 100% duty cycle operation. The DRV8962 can operate from a single power supply input (VM). Alternatively, the VCC pin can be connected to a second power supply to provide power to the internal logic blocks. The nSLEEP pin provides an ultra-low power mode to minimize current draw during system inactivity.
The device is available in two packages - a 44-pin HTSSOP (DDW) package with exposed pad at the bottom of the package; and another 44-pin HTSSOP (DDV) package with exposed pad on the top of the package. The DDW package provides up to 5-A current per output. When used with a low thermal resistance heat sink installed on the top of the DDV package, the DRV8962 can deliver up to 10-A per output. The DRV8962 DDW package is pin-to-pin compatible with the DRV8952, which is rated for 55 V maximum operating voltage. The actual current that can be delivered depends on the ambient temperature, supply voltage, and PCB thermal design.
The DRV8962 provides current sense outputs. The IPROPI pins source a small current that is proportional to the current in the high-side MOSFETs. The current from the IPROPI pins can be converted to a proportional voltage using an external resistor (RIPROPI). The integrated current sensing allows the DRV8962 to limit the output current with a fixed off-time PWM chopping scheme and provide load information to the external controller to detect changes in load. The sense accuracy of the IPROPI output is ± 3.5% for 40% to 100% of rated current. External power sense resistors can also be connected if higher accuracy sensing is required. The current regulation level can be configured during operation through the VREF pin to limit the load current according to the system demands.
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), over current protection (OCP), and over temperature shutdown (OTSD). Fault conditions are indicated on the nFAULT pin.