VNH5050A-E

Overview

The VNH5050A-E is a fully integrated H-Bridge motor driver manufactured using STMicroelectronics VIPower M0-5 technology. It features two half-bridges with a maximum output current of 30 A and supports supply voltages from 5.5 V to 18 V, with load handling up to 41 V. The device operates within a junction temperature range of -40°C to +150°C and utilizes a PowerSSO-36 package. It accepts PWM signals up to 20 kHz for speed control and includes 3 V CMOS compatible inputs.

Feature Summary

• Integrates dual monolithic high-side drivers and low-side switches on isolated lead frames for improved thermal performance.
• Provides comprehensive diagnostic feedback including overload, short-circuit, over-temperature, and open-load detection via dedicated pins.
• Features analog current sensing proportional to motor current, allowing external monitoring or sharing of sense resistors.

Applications

• Driving 12 V automotive bidirectional loads such as PMDC motors
• Automotive window and sunroof actuators
• Wiper systems

Procurement Notes

Verify the specific suffix (e.g., TR) required for your packaging needs, as the base part number may refer to tube packaging while tape-and-reel options exist. Confirm that the PowerSSO-36 footprint matches your PCB design. Ensure compatibility with 3 V or 5 V microcontroller logic levels for input signals. Check for any recent Product Change Notifications regarding assembly or material updates.

Selection Notes

Select this component when a single IC solution is needed for bidirectional brushed DC motor control in automotive environments. It is suitable for applications requiring robust protection against electrical faults and thermal stress. Consider the PowerSSO-36 package constraints if space is limited. Evaluate the need for external current sense resistors if internal sensing is disabled via the CS_DIS pin.

Part Context

The VNH5050A-E belongs to the VIPower family, designed for harsh automotive conditions. It integrates intelligent protection circuitry with power MOSFETs. Related development tools include the EV-VNH5050A evaluation board. Alternative packages like MultiPowerSO may be referenced in distributor listings for the same core functionality.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official STMicroelectronics channels before implementation.

FAQ

How is the current sense function controlled?

The CS pin delivers a current proportional to the motor current when the CS_DIS pin is driven low or left open. Driving CS_DIS high places the CS pin in a high impedance condition, disabling the sensing function.

What happens during an overtemperature event?

The device implements thermal shutdown with automatic restart. It recovers normal operation as soon as the fault condition disappears and the temperature drops below the threshold.

Can the device interface directly with microcontrollers?

Yes, the input signals INA and INB are 3 V CMOS compatible, allowing direct interfacing with standard microcontrollers to select motor direction and brake conditions.