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

STMicroelectronics L99H92Q5-TR

Name: L99H92Q5-TR
Brand: STMicroelectronics
SKU: L99H92Q5-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L99H92Q5-TR

Manufacturer:: STMicroelectronics

Category:: Gate Drivers

Package:: 32-QFN Exposed Pad

Datasheet:: L99H92Q5-TR.pdf

Description:: IC GATE DRVR HALF-BRIDGE 32QFN

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Product details

Overview

L99H92Q5-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 4.51–28 V supply range, 3.3 V/5 V I/O compatibility, and integrated dual current sense amplifiers (programmable gain: 10x–100x). It drives external N-channel MOSFETs in sun-roof, power trunk lift gate, sliding door, and window lift systems.

For engineers reviewing the L99H92Q5-TR datasheet, L99H92Q5-TR pinout, L99H92Q5-TR application, or L99H92Q5-TR equivalent, key selection considerations include gate drive current programmability (up to 170 mA), charge pump support for 100% PWM down to 5.41 V, SPI-based diagnostics (ST SPI 4.1), fail-safe input tolerance to battery exposure, and ASIL B–compliant fault handling including overcurrent, open-load, short-circuit, and thermal shutdown.

Technical Context

The L99H92Q5-TR implements a dual-stage charge pump enabling high-side gate drive at battery voltages as low as 5.41 V, delivering ≥6.2 V V_GS at 5.5 V V_DH (5 mA load) and ≥8.2 V V_GS at V_DH ≥8 V (10 mA load). Its two independently configurable current sense amplifiers feature low offset, ultra-low thermal drift, and analog outputs centered at V_DD/2 or V_DD/22.

Control logic supports full-bridge mode (DIR/IN2 selects diagonal, PWM/IN1 controls duty cycle) or dual half-bridge mode (INPMODE=1), with programmable recirculation path, cross-current protection dead-time, and asynchronous fail-safe shutdown. Diagnostics include SPI-readable flags for V_S, V_DH, V_DD, DIO overvoltage, CPLOW, TW/TSD, and off-state open-load/short detection.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Range (VS)	4.51 V to 28 V - powers internal regulator and logic; enables operation across cold-crank to load-dump conditions.
Charge Pump Min. V_GS	6.2 V @ V_DH=5.5 V, 5 mA - ensures reliable NMOS turn-on during low-battery cranking.
Gate Drive Current	Programmable up to 170 mA - controls MOSFET slew rate to minimize EMI in sensitive automotive environments.
Current Sense Gain	10x / 20x / 50x / 100x - selectable per amplifier for precision high-side, in-line, or low-side sensing.
Diagnostic Interface	ST SPI 4.1 (4-wire) + dedicated DIAGN pin - enables fast fault alerting (<1 µs latency) alongside register-level status reporting.
Thermal Protection	Pre-warning at T_j ≥150 °C; shutdown at T_j ≥175 °C - prevents latch-up and ensures ASIL B compliance.
Quiescent Current	<5 µA in standby (EN low) - meets automotive always-on node leakage requirements.

Pinout & Package

Package: QFN32 (5 mm × 5 mm, exposed pad); wettable flanks enable automated optical solder-joint inspection.

Pin	Circuit Role	Design Meaning
VDD	I/O & CSA output supply	3.3 V/5 V rail tied to MCU supply; tolerant to battery short (≤V_DD abs max).
VS	Main logic supply input	4.51–28 V input powering internal regulator; monitored for over/undervoltage warning.
VDH	Charge pump & CSA input stage supply	Drives gate drivers; enables 100% PWM at ≥5.41 V; protected against over/undervoltage faults.
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	High- and low-side gate drivers for four external NMOS; support active sink shutdown during faults.
CSI1±, CSI2±	Current sense inputs	Differential inputs for two independent CSAs; support high-side, in-line, or low-side shunt placement.
CSO1, CSO2	Current sense outputs	Analog outputs centered at V_DD/2 or V_DD/22; gain programmable per channel (10x–100x).
FSINB	Fail-safe input (active low)	Asynchronous, logic-independent shutdown of all MOSFETs - critical for functional safety compliance.
DIAGN	Dedicated fault alert	Open-drain output asserting on any fault condition faster than SPI response time.
CP1±, CP2±, CPOUT	Charge pump terminals	Support dual-stage flying capacitor topology; CPOUT can drive external reverse-battery NMOS protection.

Key Features

Feature	Design Value
Dual configurable current sense amplifiers	Independent gain (10x–100x), low offset & ultra-low thermal drift - enables accurate motor current monitoring across temperature without calibration.
Programmable gate drive current	Up to 170 mA per driver - allows EMI-optimized slew rate tuning without external gate resistors.
Off-state diagnostic comparators	Detect open-load, short-to-battery, and short-to-ground on all outputs - eliminates need for external diagnostic circuitry in motor modules.
ASIL B–compliant fault handling	Hardware-enforced shutdown paths (FSINB), SPI-accessible flags, and autonomous protection actions - satisfies ISO 26262 requirements for safety-critical body electronics.
Low-power standby mode	<5 µA quiescent current with EN low - meets automotive "always-on" node leakage budgets for battery-sensitive applications.

Applications

Sun-Roof Control

Power Trunk Lift Gate

Use Scenario: Bidirectional DC motor actuation for smooth, quiet glass panel movement with position feedback.

IC Role / Device Role / Timing Role: Dual half-bridge pre-driver controlling four external NMOS FETs; provides current-sense feedback for torque limiting and stall detection.

Use Value: Integrated CSA gain programming and programmable dead-time prevent shoot-through while enabling precise current regulation at low speeds.

Use Scenario: High-torque lifting mechanism requiring soft-start, overload protection, and emergency stop capability.

IC Role / Device Role / Timing Role: Full-bridge controller with active freewheeling path selection (HS/LS) and fail-safe input for immediate MOSFET shutdown.

Use Value: Charge pump sustains 100% PWM at 5.41 V battery voltage - ensures full lift force during cold-crank conditions.

Sliding Door Actuation

Window Lift with Belt Pre-Tensioner

Use Scenario: Long-travel linear actuator with obstacle detection via current profiling and position sensing.

IC Role / Device Role / Timing Role: Dual independent half-bridge driver enabling simultaneous control of main drive and auxiliary lock/unlock motors.

Use Value: Two independent CSAs allow concurrent current monitoring of both motors - enables coordinated motion and independent fault isolation.

Use Scenario: Safety-critical occupant restraint system requiring deterministic response to crash signals.

IC Role / Device Role / Timing Role: Motor driver with hardware fail-safe (FSINB) and ASIL B–validated thermal/overcurrent protection.

Use Value: Sub-1 µs DIAGN assertion on fault ensures pre-tensioner activation within ISO 26262 timing constraints.

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
BD1600FV-M	Single half-bridge pre-driver; no integrated current sense amplifiers; requires external CSA or MCU ADC.	Lacks dual CSA and full-bridge configuration - suitable only for simpler single-motor applications without torque feedback.	Select when cost sensitivity outweighs diagnostic completeness and ASIL B compliance is not required.
TLE9201SG	Integrated high-side/low-side drivers (not pre-driver); fixed 150 mA gate current; no programmable CSA gain.	Eliminates need for external MOSFETs but limits voltage/current scalability - best for low-power <10 A motors.	Choose for compact, integrated solutions where board space is constrained and external FETs are undesirable.

Compared with BD1600FV-M and TLE9201SG, the L99H92Q5-TR uniquely combines dual programmable CSAs, full-bridge/dual-half-bridge configurability, and ASIL B–ready diagnostics - making it optimal for safety-aware, multi-function automotive body controllers requiring field-serviceable FETs and precise current feedback.

Availability

L99H92Q5-TR is available at Aetrix Electronics and suitable for sun-roof, power trunk lift gate, and sliding door applications requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 reliability validation.

Supply support for L99H92Q5-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 and qualification capabilities.

The L99H92 belongs to ST's automotive power driver product line, engineered specifically for ASIL B–compliant DC motor control in body electronics - emphasizing robust fault coverage, wide supply range, and seamless integration with 3.3 V/5 V microcontrollers.

FAQ

What is the minimum battery voltage at which the L99H92Q5-TR supports 100% PWM duty cycle?

The L99H92Q5-TR maintains full PWM capability down to 5.41 V battery voltage (VDH) thanks to its dual-stage charge pump, which delivers ≥6.2 V gate drive even under cold-crank conditions. This ensures uninterrupted motor torque in automotive start-stop and low-voltage scenarios without requiring external boost circuitry.

How does the fail-safe input (FSINB) interact with SPI-controlled operations?

FSINB is asynchronous and logic-independent: pulling it low forces immediate, hardware-level shutdown of all gate drivers regardless of SPI register states, OUTE bit value, or ongoing communication. This bypasses software layers to meet ISO 26262 ASIL B timing and independence requirements for critical safety events.

Can the current sense amplifiers be used for both high-side and low-side shunt configurations?

Yes - each CSA accepts differential inputs (CSI1±, CSI2±) and supports high-side, in-line, or low-side shunt placement. Output centering at V_DD/2 or V_DD/22 and programmable gain (10x–100x) allow direct interface with MCU ADCs across all configurations without external level-shifting or amplification.

What protection features activate during a VDH undervoltage event?

When VDH falls below the undervoltage threshold (VDHUV), the device sets the VDHUV flag and actively shuts off all MOSFETs: low-side drivers enter forced sink mode (max discharge current), while high-side drivers switch to sink mode only while V_CP > V_DH + 3 V, then default to passive shutdown via internal RGSHx resistors - preventing shoot-through and ensuring safe motor coasting.

L99H92Q5-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 32-QFN 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, Wettable Flank

Supplier Device Package:: 32-QFN-EP (5x5)

L99H92Q5-TR FAQ

1.How can I place an order for L99H92Q5-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L99H92Q5-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 L99H92Q5-TR reliable?

The price and inventory of L99H92Q5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99H92Q5-TR is usually 5 days.

3.What payment methods are accepted for L99H92Q5-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99H92Q5-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L99H92Q5-TR?

L99H92Q5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L99H92Q5-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 L99H92Q5-TR?

For technical support, including L99H92Q5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99H92Q5-TR requirements.

6.How does Aetrix verify that L99H92Q5-TR is sourced from the original manufacturer or authorized distributors?

All L99H92Q5-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 L99H92Q5-TR meets industry standards.

7.What is the process for return or replacement of L99H92Q5-TR?

All L99H92Q5-TR units undergo pre-shipment inspection (PSI). If there is an issue with L99H92Q5-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 L99H92Q5-TR part is unused and in its original packaging.

Return procedure for L99H92Q5-TR:

1.Submit a request within 90 days.

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

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