ST L9960TR Automotive Half Bridge SPI Programmable DC Brushed Motor Driver
Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned distributor of electronic components, now supplies ST's L9960TR automotive-grade half-bridge driver, delivering high-performance solutions for automotive electronics applications.
L9960TR is an SPI-programmable DC brushed motor driver specifically engineered for demanding automotive electronics environments. Through its highly integrated design, it provides reliable solutions for critical applications such as throttle control and exhaust gas recirculation.
L9960TR Product Details
L9960TR is a high-performance, SPI-programmable brushed DC motor driver IC featuring a single/dual H-bridge configuration, optimised for driving resistive and inductive loads in automotive electronics. Meeting AEC-Q100 automotive-grade standards and incorporating comprehensive diagnostics and protection features, it serves as an ideal choice for driving various actuators within engine management systems.
Primary target applications for the L9960TR include automotive throttle control actuators, exhaust gas recirculation control valves, and general-purpose DC motors (such as turbocharger and flap control electric pumps). This chip is designed to replace discrete component solutions, offering a more highly integrated design that saves PCB space, enhances system reliability, and provides flexible control and diagnostic capabilities.
L9960TR utilises a PowerSSO-36 package, complies with the AEC-Q100 automotive standard, and operates reliably within the demanding temperature range of -40°C to 170°C.
Core technical specifications of the L9960TR include:
Voltage load range: 4.5V to 28V
On-resistance: 400mΩ (combined high/low side)
Fault protection: Integrated over-temperature and short-circuit protection
Control interface: SPI programmable
The product supports slew rate control, aiding in the reduction of electromagnetic interference (EMI).
L9960TR Functional Features
SPI Programmability and Control Interface
The L9960TR integrates a Serial Peripheral Interface (SPI), serving not only as a control channel but also as a comprehensive configuration and diagnostic tool:
Via SPI, developers can flexibly adjust device parameters, control all operating modes, and read detailed diagnostic information in real time, significantly enhancing system development flexibility and maintainability.
The chip further provides PWM/DIR pins and enhanced drive strategies for IN1/IN2, facilitating direct digital control to meet diverse application requirements.
Advanced Protection and Diagnostic Capabilities
Addressing automotive electronics' stringent reliability demands, the L9960TR incorporates multiple protection mechanisms:
Over-temperature protection automatically shuts down outputs when the chip's junction temperature exceeds safety thresholds, preventing permanent damage from overheating.
Short-circuit protection detects output short-circuit conditions and takes appropriate action to prevent chip damage and fault propagation.
The integrated freewheeling diode and optimised low-side conduction strategy effectively reduce power loss during idle operation, enhancing system energy efficiency.
Optimised Power Handling
Controlled slew rate characteristics help mitigate electromagnetic interference (EMI), which is critical for applications requiring compliance with automotive EMC standards.
Typical on-resistance as low as 400mΩ translates to reduced conduction losses and higher drive efficiency, enabling handling of peak currents up to 9A.
L9960TR Application Scenarios
The L9960TR is suitable for diverse automotive electronics applications, particularly systems demanding high reliability and precise control.
Within powertrain systems, this driver can be employed for throttle control actuators and exhaust gas recirculation control valves.
It is also suitable for general DC motor drives in turbocharger systems and flap control electric pumps.
The L9960TR supports diverse load types, including inductive, capacitive, and resistive loads, broadening its applicability across automotive electronic systems.
L9960TR Technical Highlights
As an automotive-grade half-bridge driver, the L9960TR incorporates multiple advanced features that deliver outstanding performance in automotive motor control applications.
The SPI programmable interface is a key highlight of the L9960TR, enabling developers to adjust device parameters, control all operating modes, and read diagnostic information, achieving high flexibility and system controllability.
During idle operation, the L9960TR only connects the low-side with the diode in parallel. This design significantly reduces power loss and enhances system energy efficiency.
The H-bridge incorporates an integrated freewheeling diode, simplifying external circuit design.
The PWM/DIR pins and IN1/IN2 enhance drive strategies, providing multiple solutions for diverse motor control requirements.
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