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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Gate Drivers

STMicroelectronics L99H92QF-TR

Name: L99H92QF-TR
Brand: STMicroelectronics
SKU: L99H92QF-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L99H92QF-TR

Manufacturer:: STMicroelectronics

Category:: Gate Drivers

Package:: 32-QFP Exposed Pad

Datasheet:: L99H92QF-TR.pdf

Description:: IC GATE DRVR HALF-BRIDGE 32QFP

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Product details

Overview

L99H92QF-TR from STMicroelectronics is an AEC-Q100 qualified dual half-bridge pre-driver IC for automotive DC motor control, supporting configurable full-bridge or independent half-bridge operation with programmable gate drive current (up to 170 mA), dual current sense amplifiers (gain 10×–100×), and SPI 4.1 interface. It operates from 4.51 V to 28 V supply (gate drivers active ≥5.41 V), features fail-safe input, and targets electric park brake systems, sun-roof actuators, and power trunk lift gates.

For engineers reviewing the L99H92QF-TR datasheet, L99H92QF-TR pinout, L99H92QF-TR application, or L99H92QF-TR equivalent, key selection criteria include its TQFP32 package with exposed pad, dual-stage charge pump enabling 100% PWM duty cycle down to 5.41 V, programmable cross-current protection time, off-state open-load/short-circuit diagnostics, and ASIL B–supporting fault handling via SPI and dedicated DIAGN pin.

Technical Context

The device integrates two independent high-side/low-side gate drivers with dual-stage charge pump architecture, delivering ≥6.2 V gate-source voltage at VDH = 5.5 V (ICPLOAD = 5 mA) and ≥8.2 V at VDH ≥ 8 V (ICPLOAD = 10 mA). Its SPI 4.1 interface enables real-time register access for configuration, status monitoring, and fault clearing-including VSOVW, VDHOV, VDHUV, VDDOV, DIOOV, CPLOW, TW, and TSD flags.

Two fully programmable current sense amplifiers support high-side, in-line, or low-side sensing with analog outputs centered at VDD/2 or VDD/22, and thermal management includes junction temperature warning (TjTW_ON) and shutdown (TjSD_ON) with forced sink-switch MOSFET turn-off during faults. Standby mode draws <5 µA (ISq) with EN low and registers reset to default.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Range (VS)	4.51 V to 28 V - powers internal logic regulator; overvoltage warning/protect thresholds programmable via SPI.
Gate Driver Enable Voltage (VDH)	≥5.41 V - minimum voltage for gate driver operation; undervoltage protection triggers MOSFET shutdown.
Charge Pump Output	Supports 100% PWM duty cycle down to 5.41 V battery - enables continuous motor control without PWM dropout.
Gate Drive Current	Programmable up to 170 mA - controls MOSFET slew rate to minimize EMI in noisy automotive environments.
Current Sense Gain	10×, 20×, 50×, or 100× - selectable per amplifier for precise motor current measurement across load ranges.
Diagnostic Interface	SPI 4.1 + dedicated DIAGN pin - provides fast fault alert (<1 µs latency) and full register-level status/control.
Thermal Protection	ASIL B–compliant warning (TjTW_ON) and shutdown (TjSD_ON) - forces active sink-switch MOSFET turn-off with configurable filtering.

Pinout & Package

TQFP32 (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad recommended to be connected to GND for optimal thermal performance and EMI reduction.

Pin/Terminal	Circuit Role	Design Meaning
VDD	I/O and CSA output stage supply	3.3 V/5 V compatible; must match MCU supply; withstands short-to-battery up to absolute max rating.
VS	Main logic supply input	Powers internal regulator; monitored for overvoltage warning (VSOVW) and POR sequencing.
VDH	Charge pump and CSA input stage supply	Enables gate drivers; protected against over/undervoltage (VDHOV/VDHUV) with automatic shutdown.
PWM/IN1 & DIR/IN2	Motor control inputs	Configurable for full-bridge (direction + PWM) or dual half-bridge; internal pull-down ensures safe state if MCU disconnects.
GH1, GH2, GL1, GL2	Gate drive outputs	Drive external N-channel MOSFETs; support programmable slew rate and cross-current protection dead-time.
CSI1±, CSI2±	Current sense differential inputs	Enable high-accuracy motor current measurement in high-side, in-line, or low-side configurations.
CSO1, CSO2	Current sense analog outputs	Centered at VDD/2 or VDD/22; gain programmable per channel for dynamic range optimization.
DIAGN	Asynchronous fault alert	Open-drain output asserting on critical faults (e.g., TSD, VDHOV) faster than SPI response time.
FSINB	Fail-safe input (active-low)	Hardware-independent shutdown: forces all MOSFETs OFF via sink-switch mode regardless of SPI/OUTE state.
CPOUT	Charge pump output	Drives external reverse-battery NMOS protection FET; monitored for low-voltage condition (CPLOW flag).

Key Features

Feature	Design Value
Dual-stage charge pump	Enables 100% PWM duty cycle operation down to 5.41 V battery voltage-critical for low-speed, high-torque motor control.
Programmable gate drive current	Up to 170 mA per channel-adjustable slew rate reduces EMI emissions without external RC networks.
Independent current sense amplifiers	Two matched CSAs with ultra-low offset drift-enables accurate torque/current regulation in safety-critical braking and lift applications.
Off-state diagnostic comparators	Detect open-load, short-to-battery, and short-to-ground on all four MOSFETs-supports ISO 26262 diagnostic coverage requirements.
ASIL B–supporting fault handling	Hardware-enforced fail-safe (FSINB), SPI-managed diagnostics, and thermal/overvoltage protections-meets functional safety goals for automotive ECUs.

Applications

Electric Park Brake (EPB)

Sun-Roof Actuator

Use Scenario: Precise bidirectional actuation of caliper motors under varying battery voltage and temperature conditions.

IC Role / Device Role / Timing Role: Dual half-bridge pre-driver controlling four external N-MOSFETs; provides current feedback for closed-loop torque control and failsafe shutdown on overtemperature or overcurrent.

Use Value: Enables ASIL B–compliant EPB hold/release with <5 µA standby current, eliminating need for auxiliary wake-up circuitry.

Use Scenario: Smooth, quiet, and position-controlled opening/closing of panoramic sun-roofs in premium vehicles.

IC Role / Device Role / Timing Role: Full-bridge motor controller with programmable freewheeling path (HS/LS) and active recirculation-reducing audible noise and mechanical jerk.

Use Value: Dual CSA channels enable real-time current profiling for obstacle detection and soft-stop functionality without additional sensors.

Power Trunk Lift Gate

Sliding Door Actuator

Use Scenario: High-torque lifting of heavy rear cargo doors with integrated pinch detection and auto-reverse.

IC Role / Device Role / Timing Role: Configurable dual half-bridge driving dual motors or one motor with redundancy; off-state diagnostics verify motor integrity before each motion cycle.

Use Value: Programmable cross-current protection time prevents shoot-through during direction reversal-ensuring robust operation across 12 V/24 V architectures.

Use Scenario: Synchronized, jerk-free movement of large sliding doors in commercial vans and EVs.

IC Role / Device Role / Timing Role: SPI-configured full-bridge controller with diagnostic output (DIAGN) feeding door ECU for real-time fault classification (e.g., jam vs. overload).

Use Value: Charge pump output (CPOUT) drives external reverse-battery NMOS-eliminating need for discrete protection circuitry and reducing BOM count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD3572FS-E2 (ROHM)	Single-chip H-bridge driver (not pre-driver); no integrated CSAs; lacks SPI interface and ASIL B–certified diagnostics.	Targeted at cost-sensitive non-safety motor control (e.g., HVAC fans); no off-state diagnostics or reverse-battery protection support.	Select only for non-automotive or non-safety applications where CSA feedback and functional safety are not required.
TPIC2603DWR (TI)	Quad high-side driver only; no low-side or charge pump; supports 40 V abs max but no VDH/VS separation or dual CSA capability.	Used in solenoid/valve control-not suitable for bidirectional DC motor commutation or torque regulation.	Choose only when driving unidirectional loads with high-side-only topology and no current sensing needs.

Compared with BD3572FS-E2 and TPIC2603DWR, L99H92QF-TR uniquely combines ASIL B–ready diagnostics, dual programmable CSAs, full-bridge/half-bridge configurability, and reverse-battery protection integration-making it the only drop-in solution for EPB, lift-gate, and sliding-door ECUs requiring ISO 26262 compliance.

Availability

L99H92QF-TR is available at Aetrix Electronics and suitable for electric park brake systems, power trunk lift gates, and sliding door actuators requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 reliability validation.

Supply support for L99H92QF-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, industrial, and power management ICs with broad manufacturing scale and automotive qualification expertise.

L99H92 belongs to ST's L99 family of automotive smart power drivers, designed specifically for ASIL B–capable body electronics applications including seat, window, door, and brake actuation-emphasizing integrated diagnostics, low-power standby, and robust fault containment.

FAQ

What is the minimum battery voltage at which L99H92QF-TR maintains full gate drive capability?

The dual-stage charge pump sustains ≥6.2 V gate-source voltage for high-side and low-side MOSFETs down to 5.41 V battery voltage (VDH), enabling uninterrupted 100% PWM duty cycle operation in cold-cranking scenarios. Below this threshold, the NRDY flag asserts and gate drivers remain disabled until VDH recovers above the startup threshold with sufficient filtering time (tCP).

How does the off-state diagnostic function detect open-load conditions?

During off-state, internal comparators monitor drain-source voltage (V_DS) of each MOSFET using SH1/SH2 and SL1/SL2 nodes. An open load produces V_DS ≈ battery voltage, triggering the OL flag; short-to-battery yields V_DS ≈ 0 V (SB flag); short-to-ground yields V_DS ≈ V_BAT − V_FWD (SG flag)-all reported via SPI status register and optionally asserted on DIAGN pin.

Can L99H92QF-TR drive both high-side and low-side N-MOSFETs in a single H-bridge configuration?

Yes-its dual half-bridge architecture supports full-bridge mode where GH1/SL1 and GH2/SL2 form two legs, with SH1/SH2 serving as shared source/drain nodes. The INPMODE bit configures full-bridge operation, and AFWE/FWS bits select active/passive freewheeling paths on high-side or low-side MOSFETs-enabling efficient regenerative braking and directional control.

Is the CPOUT pin intended solely for reverse-battery protection, or can it supply other circuitry?

CPOUT is primarily designed to drive the gate of an external N-channel MOSFET for reverse-battery protection, with output current capability limited by the internal charge pump (ICP_lim). It is not rated for general-purpose power supply use-connecting loads beyond the specified NMOS gate capacitance may destabilize charge pump regulation or trigger CPLOW fault detection.

L99H92QF-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 32-QFP Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: -

Driven Configuration:: Half-Bridge

Channel Type:: Synchronous

Number of Drivers:: 4

Gate Type:: N-Channel MOSFET

Voltage - Supply:: 4.51V ~ 28V

Logic Voltage - VIL, VIH:: -

Current - Peak Output (Source, Sink):: -

Input Type:: Non-Inverting

High Side Voltage - Max (Bootstrap):: -

Rise / Fall Time (Typ):: -

Operating Temperature:: -

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 32-TQFP-EP (7x7)

L99H92QF-TR FAQ

1.How can I place an order for L99H92QF-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L99H92QF-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 L99H92QF-TR reliable?

The price and inventory of L99H92QF-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99H92QF-TR is usually 5 days.

3.What payment methods are accepted for L99H92QF-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99H92QF-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L99H92QF-TR?

L99H92QF-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L99H92QF-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 L99H92QF-TR?

For technical support, including L99H92QF-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99H92QF-TR requirements.

6.How does Aetrix verify that L99H92QF-TR is sourced from the original manufacturer or authorized distributors?

All L99H92QF-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 L99H92QF-TR meets industry standards.

7.What is the process for return or replacement of L99H92QF-TR?

All L99H92QF-TR units undergo pre-shipment inspection (PSI). If there is an issue with L99H92QF-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 L99H92QF-TR part is unused and in its original packaging.

Return procedure for L99H92QF-TR:

1.Submit a request within 90 days.

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

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