Overview
The L9960T is an integrated H-Bridge designed for driving resistive and inductive loads in automotive applications. It is manufactured by STMicroelectronics and is part of their automotive analog and power product line. This device is particularly suited for applications such as throttle control actuators, exhaust gas recirculation control valves, and general-purpose DC motors like those used in turbo, flap control, and electric pumps.
The L9960T features a flexible driving strategy enhanced by configurable PWM/DIR pins and IN1/IN2, and it includes integrated free-wheel diodes to reduce power dissipation during freewheeling conditions. The device also incorporates a Serial Peripheral Interface (SPI) for adjusting device parameters, controlling operating modes, and reading diagnostic information.
Key Specifications
| Specification | Description |
|---|---|
| Package | PWSSO 36 (PowerSSO-36) |
| Operating Battery Supply Voltage | 4.5 V to 28 V |
| Operating VDD5 Supply Voltage | 4.5 V to 5.5 V |
| Input Switching Frequency | Up to 20 kHz |
| RDSon | < 400 mΩ (full path at Tj = 150° C) |
| Logic Levels | Compatible with 3.3 V and 5 V |
| Current Limitation | SPI-adjustable in four steps |
| Temperature Range | Operating temperature range not explicitly stated, but typical for automotive applications |
| I/O Pin Voltage Tolerance | Up to 19 V |
Key Features
- AEC-Q100 qualified for automotive reliability
- Flexible driving strategy via configurable PWM/DIR pins and IN1/IN2
- Built-in charge pump supporting 100% duty cycle
- Integrated free-wheel diodes to reduce power dissipation
- SPI interface for configuration and diagnosis
- Current limitation SPI-adjustable in four steps
- Output stage current limitation with dependence on temperature
- Programmable voltage and current slew rate control
- Short circuit and programmable thermal warning and shutdown thresholds
- Open Load diagnosis in ON condition
- Spread Spectrum function for EMI reduction
- Two independent enable/disable pins (NDIS and DIS) and SOPC (Switch-off Path Check) available
Applications
The L9960T is designed for various automotive applications, including:
- Throttle control actuators
- Exhaust gas recirculation control valves
- General-purpose DC motors such as those used in turbo, flap control, and electric pumps
Q & A
- What is the L9960T used for?
The L9960T is used for driving resistive and inductive loads in automotive applications, such as throttle control actuators, exhaust gas recirculation control valves, and general-purpose DC motors.
- What is the operating voltage range of the L9960T?
The operating battery supply voltage range is from 4.5 V to 28 V, and the VDD5 supply voltage range is from 4.5 V to 5.5 V.
- What is the maximum input switching frequency of the L9960T?
The maximum input switching frequency is up to 20 kHz.
- Does the L9960T have built-in protection features?
- How is the L9960T configured and diagnosed?
The device is configured and diagnosed through a Serial Peripheral Interface (SPI).
- What package options are available for the L9960T?
The L9960T is available in the PowerSSO-36 package, with both tube and tape-and-reel packing options.
- Is the L9960T AEC-Q100 qualified?
- Can the current limitation of the L9960T be adjusted?
- Does the L9960T support EMI reduction?
- What is the RDSon value of the L9960T?
The RDSon value is less than 400 mΩ (full path at Tj = 150° C).
