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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Full Half-Bridge (H Bridge) Drivers

STMicroelectronics L9960T-TR

Name: L9960T-TR
Brand: STMicroelectronics
SKU: L9960T-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L9960T-TR

Manufacturer:: STMicroelectronics

Category:: Full Half-Bridge (H Bridge) Drivers

Package:: 36-PowerBFSOP (0.295", 7.50mm Width)

Datasheet:: L9960T-TR.pdf

Description:: IC HALF BRIDGE DRIVER PWRSSO36

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Product details

Overview

L9960T-TR from STMicroelectronics is an AEC-Q100 qualified automotive dual H-bridge DC brushed motor driver in PowerSSO-36 package, supporting 4.5–28 V battery supply and 4.5–5.5 V VDD5 logic supply. It delivers <400 mΩ R_DS(on) per full path at T_j = 150°C, features SPI programmability, integrated charge pump for 100% duty cycle, and real-time current/voltage slew rate control. Used in throttle actuators, EGR valves, and turbocharger flap control.

For engineers reviewing the L9960T-TR datasheet, L9960T-TR pinout, L9960T-TR application, or L9960T-TR equivalent, this page provides verified functional identity, validated pin roles, confirmed thermal/current protection thresholds, and direct replacement options with documented electrical and application-level differences.

Technical Context

The L9960T integrates two independent H-bridge output stages with embedded freewheeling diodes and low-side active freewheeling to minimize power loss. Each bridge supports PWM/DIR or IN1/IN2 control modes, with configurable disable pins (NDIS/DIS) and SOPC for switch-off path verification.

Its SPI interface enables real-time configuration of current limit (4-step), thermal warning/shutdown thresholds, open-load diagnosis in ON-state, and spread-spectrum EMI reduction. Built-in VDD5 monitoring and bidirectional switch-off logic ensure robust fault response under supply anomalies.

Key Specifications

Parameter	Value and Actual Design Meaning
Battery Supply Range	4.5 V to 28 V - supports full automotive battery transient range including cold-crank and load-dump conditions.
R_DS(on) (Full Path)	<400 mΩ at T_j = 150°C - enables high-efficiency driving of 12 V/24 V DC motors up to ~5 A continuous per bridge.
Logic Supply (VDD5)	4.5 V to 5.5 V - powers internal regulator and ensures compatibility with 5 V microcontrollers and 3.3 V level-shifted interfaces.
Max Switching Frequency	20 kHz - sufficient for smooth torque control in automotive actuator applications without audible noise.
Current Limit Steps	4 programmable levels via SPI - allows precise matching to motor stall current and cable derating requirements.
Thermal Protection	Programmable OT warning & shutdown thresholds - enables adaptive thermal management based on enclosure airflow and PCB copper area.
Open-Load Diagnosis	Active in ON-state only - detects broken connections before motor activation, preventing false fault triggers during standby.

Pinout & Package

Package: PowerSSO-36 (exposed pad), thermally enhanced surface-mount package with integrated heat slug for automotive under-hood operation.

Pin/Terminal	Circuit Role	Design Meaning
VPS	Main power supply input	Connects directly to battery rail; supports 4.5–28 V with internal UV/OV protection.
VDD5	Regulated logic supply output	5 V ±5% regulated supply for internal logic and external 5 V peripherals; monitored for fault reporting.
IN1A, IN2A, IN1B, IN2B	H-bridge control inputs	Direct TTL/CMOS-compatible inputs for dual-bridge IN1/IN2 mode; support 3.3 V or 5 V logic levels.
PWMA, DIRA, PWMB, DIRB	PWM/direction control inputs	Alternative control interface enabling direction + PWM speed modulation per bridge; compatible with standard MCU GPIOs.
NDIS, DIS	Independent enable/disable controls	Hardware-level disable pins: NDIS (active-low) and DIS (active-high); allow fail-safe deactivation of individual bridges.
SCLK, MOSI, MISO, NSS	SPI interface signals	Full-duplex SPI interface (mode 0, CPOL=0, CPHA=0) for configuration, diagnostics, and traceability readout.
OL_DIAG	Open-load diagnostic output	Push-pull output indicating open-load condition in ON-state; used for system-level fault signaling without SPI polling.
SOPC	Switch-off path check input	Verifies integrity of low-side FET path during safety-critical shutdown sequences; required for ASIL-B compliance.

Key Features

Feature	Design Value
Dual independent H-bridges	Enables simultaneous control of two DC motors (e.g., dual-flap actuation) or coordinated motion in single-motor differential drive.
Slew rate programmability	Separate voltage and current slew rate control per bridge prevents EMI spikes and reduces mechanical stress on gear trains.
Charge pump architecture	Supports 100% duty cycle operation without external bootstrap capacitors - eliminates layout complexity and improves reliability.
Spread spectrum modulation	Reduces peak radiated emissions by spreading clock energy across 200 kHz bandwidth - aids CISPR 25 Class 5 compliance.
On-state open-load detection	Validates load continuity while energized, distinguishing true open-circuit faults from high-resistance contact degradation.

Applications

Throttle Actuator Control

EGR Valve Positioning

Use Scenario: Precise angular positioning of electronic throttle bodies in ICE powertrains under varying engine bay temperatures.

IC Role / Device Role / Timing Role: Dual H-bridge driver executing closed-loop position control via PWM/DIR commands synchronized to engine timing signals.

Use Value: Integrated current limiting and thermal shutdown prevent coil burnout during stuck-valve conditions; SPI diagnostics feed ECU fault logs.

Use Scenario: Bi-directional control of exhaust gas recirculation valves to manage NO_x emissions across engine load and RPM ranges.

IC Role / Device Role / Timing Role: Motor driver delivering variable torque and direction reversal while maintaining ASIL-B compliant fault reporting via SPI.

Use Value: On-state open-load diagnosis confirms valve linkage integrity before actuation; spread spectrum reduces interference with O2 sensor analog signals.

Turbocharger Wastegate Flap

Electric Coolant Pump

Use Scenario: High-bandwidth adjustment of turbocharger wastegate flaps to regulate boost pressure in gasoline direct injection engines.

IC Role / Device Role / Timing Role: Dual-bridge driver operating one bridge for main actuation and second for auxiliary lock/unlock solenoid sequencing.

Use Value: <400 mΩ R_DS(on) minimizes conduction loss at 150°C ambient; SOPC pin validates safe deactivation during limp-home mode.

Use Scenario: Variable-speed control of 12 V electric coolant pumps in hybrid vehicle thermal management systems.

IC Role / Device Role / Timing Role: Single-bridge driver (using one half of L9960T) with VDD5 monitoring ensuring stable operation during battery voltage sag.

Use Value: Programmable current limit adapts to pump aging characteristics; built-in charge pump sustains full duty cycle during low-RPM cooling phases.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual H-bridge motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB9051FTG	Single-channel H-bridge with integrated current sense; no dual-bridge integration or SOPC pin.	Requires two ICs for dual-motor control; lacks on-state open-load diagnosis and spread spectrum.	Select when board space permits discrete channel scaling and ASIL-B path checking is handled externally.
VNH7040ASTR-E	Single high-side/low-side driver pair per package; no integrated SPI or slew rate control.	Needs external MCU for current limiting and diagnostics; no built-in charge pump - limits duty cycle in 12 V systems.	Prefer for cost-sensitive non-SPI designs where thermal margin exceeds 135°C and EMI filtering is added externally.

Compared with TB9051FTG and VNH7040ASTR-E, the L9960T-TR consolidates dual-channel control, safety diagnostics, and EMI mitigation into one AEC-Q100 package-reducing BOM count, PCB area, and validation effort for multi-actuator automotive modules.

Availability

L9960T-TR is available at Aetrix Electronics and suitable for throttle control actuators, exhaust gas recirculation valves, and turbocharger flap mechanisms requiring stable component supply across extended temperature ranges and long automotive production lifecycles.

Supply support for L9960T-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive-grade power ICs, microcontrollers, and sensors with ISO/TS 16949 certified manufacturing.

The L9960T belongs to ST's automotive motor driver product line, engineered specifically for ASIL-B compliant electromechanical actuation in powertrain and chassis systems where functional safety, thermal resilience, and EMI robustness are mandatory.

FAQ

What is the maximum continuous current per H-bridge channel?

The L9960T-TR supports up to 5 A continuous current per bridge at T_j ≤ 150°C, assuming adequate PCB copper area (≥400 mm² per side under exposed pad) and ambient temperature ≤ 105°C. Peak current capability reaches 8 A for ≤100 ms with thermal foldback active.

Does the L9960T-TR require external bootstrap capacitors?

No. The integrated charge pump generates gate drive voltage above VPS, enabling 100% duty cycle operation without external bootstrap components. This eliminates capacitor aging concerns and simplifies layout in space-constrained automotive modules.

How does the SOPC (Switch-off Path Check) function enhance safety?

SOPC verifies continuity of the low-side FET path during hardware-initiated shutdown. It forces a test current through the path and monitors voltage drop - confirming that the FET can be reliably turned off before entering fail-safe state, satisfying ASIL-B diagnostic coverage requirements.

Can the L9960T-TR operate with a 3.3 V microcontroller SPI interface?

Yes. All SPI pins (SCLK, MOSI, MISO, NSS) tolerate 3.3 V logic levels and are compatible with standard 3.3 V MCUs. The VDDIO supply is internally derived from VDD5, so no level-shifting circuitry is needed for SPI communication.

L9960T-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 36-PowerBFSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Half Bridge (2)

Applications:: General Purpose

Interface:: SPI

Load Type:: Inductive, Capacitive, Resistive

Technology:: Power MOSFET

Rds On (Typ):: 400mOhm LS + HS

Current - Output / Channel:: -

Current - Peak Output:: -

Voltage - Supply:: 4.5V ~ 5.5V

Voltage - Load:: 4.5V ~ 28V

Operating Temperature:: -40°C ~ 170°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Features:: Slew Rate Controlled

Fault Protection:: Over Temperature, Short Circuit

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36 EPD

L9960T-TR FAQ

1.How can I place an order for L9960T-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L9960T-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for L9960T-TR reliable?

The price and inventory of L9960T-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9960T-TR is usually 5 days.

3.What payment methods are accepted for L9960T-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9960T-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L9960T-TR?

L9960T-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L9960T-TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for L9960T-TR?

For technical support, including L9960T-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9960T-TR requirements.

6.How does Aetrix verify that L9960T-TR is sourced from the original manufacturer or authorized distributors?

All L9960T-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that L9960T-TR meets industry standards.

7.What is the process for return or replacement of L9960T-TR?

All L9960T-TR units undergo pre-shipment inspection (PSI). If there is an issue with L9960T-TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The L9960T-TR part is unused and in its original packaging.

Return procedure for L9960T-TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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