Overview
The VNH5050A-E is a full bridge motor driver designed by STMicroelectronics for a wide range of automotive applications. It incorporates a dual monolithic high-side driver and two low-side switches, utilizing STMicroelectronics' proprietary VIPower® M0 technology. This technology integrates a true Power MOSFET with intelligent signal and protection circuitry on the same die. The device is packaged in a PowerSSO-36 TP package, which is specifically designed for the harsh automotive environment, offering improved thermal performance and superior manufacturability at the board level.
The input signals INA and INB can directly interface with a microcontroller to select the motor direction and brake condition. The device also features diagnostic feedback signals through the DIAGA/ENA and DIAGB/ENB pins. The PWM input allows for speed control of the motor up to 20 KHz.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 30 A | A |
| Supply Voltage (VCC) | 5.5 to 18 V | V |
| Maximum Supply Voltage | 41 V | V |
| Static High-Side Resistance (RONHS) | 17 mΩ (Tj = -40°C), 26 mΩ (Tj = 25°C), 50 mΩ (Tj = 150°C) | mΩ |
| Junction Operating Temperature | -40 to 150 °C | °C |
| Thermal Resistance Junction-Case (Rthj-case) | 3.7 °C/W (HSD), 3.9 °C/W (LSD) | °C/W |
| PWM Frequency | Up to 20 KHz | KHz |
| Package | PowerSSO-36 TP |
Key Features
- Output current: 30 A
- 3 V CMOS compatible inputs
- Undervoltage and overvoltage shutdown
- Overvoltage clamp
- Thermal shutdown
- Cross-conduction protection
- Current and power limitation
- Very low standby power consumption
- PWM operation up to 20 KHz
- Protection against loss of ground and loss of VCC
- Current sense output proportional to motor current
- Output protected against short to ground and short to VCC
- Package: ECOPACK®
Applications
The VNH5050A-E is designed for a wide range of automotive applications, including but not limited to:
- Seat positioning systems
- Other motor driving applications in harsh automotive environments
- Systems requiring high current handling and advanced protection features
Q & A
- What is the maximum output current of the VNH5050A-E?
The maximum output current is 30 A.
- What is the operating supply voltage range for the VNH5050A-E?
The operating supply voltage range is from 5.5 V to 18 V.
- What is the maximum supply voltage the VNH5050A-E can handle?
The maximum supply voltage is 41 V.
- What is the thermal shutdown feature in the VNH5050A-E?
The thermal shutdown feature shuts down the device in case of high junction temperature to prevent degradation and protect the die.
- How does the PWM input control the motor speed?
The PWM input allows for speed control of the motor up to 20 KHz by modulating the gates of the low-side FETs during their on phase.
- What is the purpose of the CS pin in the VNH5050A-E?
The CS pin allows monitoring the motor current by delivering a current proportional to its value when CS_DIS is low or left open.
- What protection features does the VNH5050A-E have against electrical faults?
The device has protection against undervoltage, overvoltage, cross-conduction, short to ground, and short to VCC, as well as protection against loss of ground and loss of VCC.
- What is the package type of the VNH5050A-E?
The device is packaged in a PowerSSO-36 TP package.
- How does the DIAGA/ENA and DIAGB/ENB pins function?
These pins enable one leg of the bridge when connected to an external pull-up resistor and provide digital diagnostic feedback signals.
- What is the significance of the VIPower® M0 technology used in the VNH5050A-E?
The VIPower® M0 technology allows for the efficient integration of a true Power MOSFET with intelligent signal and protection circuitry on the same die.
