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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

STMicroelectronics L99H01XPTR

Name: L99H01XPTR
Brand: STMicroelectronics
SKU: L99H01XPTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L99H01XPTR

Manufacturer:: STMicroelectronics

Category:: Motor Drivers, Controllers

Package:: PowerSSO-36 Exposed Bottom Pad

Datasheet:: L99H01XPTR.pdf

Description:: IC MOTOR DRVR 6V-28V 36POWERSSO

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Product details

Overview

L99H01XPTR from STMicroelectronics is an automotive-grade 4-channel N-channel MOSFET bridge driver IC designed to control DC motors in safety-critical vehicle subsystems. It operates from 6 V to 28 V, integrates a dual-stage charge pump enabling 100% duty cycle operation down to 6 V supply, and features SPI-controlled diagnostics, programmable freewheeling, and differential current sense amplifiers with zero-adjust trimming - deployed in seat positioning and park brake actuation systems.

For engineers reviewing the L99H01XPTR datasheet, L99H01XPTR pinout, L99H01XPTR application, or L99H01XPTR equivalent, key selection considerations include its PowerSSO-36 package thermal performance, external MOSFET gate drive capability (GH1/SL1/GH2/SL2), integrated thermal sensor interface (TS/ACT_OFF), and SPI-configurable cross-current protection timing.

Technical Context

The L99H01XPTR implements two independent half-bridge drivers (HB1 and HB2), each with dedicated high-side (GH1/GH2) and low-side (SL1/SL2) gate outputs, supporting bidirectional motor control via DIR/PWM inputs and SPI register configuration. Its central two-stage charge pump delivers stable gate drive voltage for N-MOSFETs even at VS = 6 V, enabling full R_DS(on) utilization without bootstrap limitations.

Diagnostics are tightly integrated: real-time drain-source monitoring detects short circuits, thermal warning/shutdown thresholds are configurable via SPI, and the current sense amplifier supports multiplexed inputs (CSI1±/CSI2±) with programmable gain (5–50 V/V) and end-of-line zero adjustment. The TS/ACT_OFF pin serves dual roles - as thermal sensor interface or global active-off command input.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage (VS)	6 V to 28 V - supports full automotive battery range including cold-crank (6 V) and load-dump (28 V) conditions.
Gate drive output	GH1/SL1/GH2/SL2 - drives four external N-channel MOSFETs in H-bridge configuration for bidirectional DC motor control.
SPI interface	8-bit command/data, CSN/CLK/DI/DO - enables full configuration, status readback, and fault reporting with watchdog supervision.
Current sense	Differential inputs CSI1±/CSI2±, programmable gain (5–50 V/V), zero-adjust trim - supports precise motor current feedback for torque control and stall detection.
Thermal protection	Programmable temperature warning & shutdown via TS/ACT_OFF pin - interfaces directly with external MOSFET thermal diodes for system-level thermal management.
Charge pump	Two-stage architecture with CP, CP1±, CP2± pins - sustains high-side gate drive at 100% duty cycle down to 6 V VS, eliminating bootstrap capacitor dependency.
Freewheeling mode	Programmable active/passive freewheeling (bit FW) - reduces power dissipation during PWM off-time and improves EMI behavior.

Pinout & Package

Package: PowerSSO-36 (exposed slug, thermally enhanced, RoHS-compliant surface-mount package with 7.0 mm × 6.0 mm footprint and 1.0 mm height).

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Power ground	Reference for analog/digital circuitry and thermal slug connection - must be tied to PCB ground plane for thermal and EMI performance.
5 EN	Enable input	Pull-down enabled logic input - asserts standby mode when low; required for functional safety sequencing and power-on reset coordination.
6 DIR / 7 PWM	H-bridge control	Direction select and PWM modulation inputs - define motor rotation direction and speed; both feature internal pull-down for fail-safe default state.
13 CSO	Current sense output	VCC-compatible analog output - delivers amplified, filtered motor current signal for external ADC sampling or comparator-based overcurrent detection.
21 TS/ACT_OFF	Thermal interface / global disable	Dual-function pin - connects to external MOSFET thermal diode (forward voltage sensing) or forces immediate driver shutdown when asserted high.
23–24, 27–28, 25–26, 29–30	Gate/source drivers	GH1/SL1 (HB1), GH2/SL2 (HB2) - direct gate drive outputs with current-limited sourcing/sinking for discrete N-MOSFETs; SL/SH pins connect to MOSFET sources/drains.
31–35 CP, CP1±, CP2±	Charge pump terminals	Support external ceramic capacitors for dual-stage charge pump - enables robust high-side gate drive under low-VS conditions without bootstrap diode/capacitor compromises.

Key Features

Feature	Design Value
100% duty cycle operation	Enabled by dual-stage charge pump - eliminates dead-time-induced torque ripple and supports holding torque in park brake applications without PWM.
Programmable cross-current protection	Configurable t_CCP (100 ns–2 µs) via SPI - prevents shoot-through during switching transitions while accommodating diverse MOSFET gate charge profiles.
Differential current sensing	Multiplexed CSI1±/CSI2± inputs with 5–50 V/V gain and factory-trimmable offset - delivers ±1% full-scale accuracy for closed-loop current control in seat belt tensioners.
SPI diagnostic reporting	Global status byte + per-register fault flags (overvoltage, undervoltage, thermal, short-circuit, watchdog timeout) - enables ASIL-B compliant fault tree analysis in AUTOSAR MCAL stacks.
Reverse battery protection control	Dedicated output for external reverse-battery MOSFET gate - allows integration of cost-effective, high-efficiency reverse polarity protection without additional controller IC.

Applications

Seat Positioning

Power Door Lock Actuator

Use Scenario: Precise linear movement of automotive power seats using dual DC motors for fore/aft and recline functions.

IC Role / Device Role / Timing Role: Dual half-bridge driver controlling two independent motors with synchronized DIR/PWM and current feedback for position estimation.

Use Value: Programmable freewheeling and 100% duty cycle enable smooth, jitter-free holding torque at any seat position without audible PWM noise.

Use Scenario: Bidirectional actuation of door lock/unlock mechanisms with stall detection and end-of-travel confirmation.

IC Role / Device Role / Timing Role: H-bridge driver with integrated current sense amplifier and short-circuit detection - monitors motor current to infer mechanical latch engagement.

Use Value: Differential CSA with zero-adjust trim provides ±20 mA resolution at 10 A full scale, enabling reliable stall detection within 5 ms response time.

Park Brake Actuation

Valve Tronic Engine Control

Use Scenario: High-reliability electro-mechanical parking brake engagement/disengagement requiring fail-safe torque hold and thermal monitoring.

IC Role / Device Role / Timing Role: Safety-critical bridge driver with TS/ACT_OFF thermal interface and SPI-configurable thermal shutdown thresholds aligned to ISO 26262 ASIL-C requirements.

Use Value: Direct thermal diode interface enables real-time MOSFET junction temperature tracking - triggers shutdown before silicon damage at T_J > 175 °C.

Use Scenario: Fast-response variable valve lift control using compact DC motors to adjust cam phasing in gasoline engines.

IC Role / Device Role / Timing Role: High-frequency PWM driver (up to 30 kHz) with low propagation delay (<150 ns) and programmable cross-current protection for rapid directional reversal.

Use Value: 30 kHz PWM support minimizes audible noise and enables fine-grained lift control resolution - critical for meeting EU6 emissions targets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE9201SE	Single half-bridge, integrated current sense, no charge pump - requires external bootstrap for high-side drive above 10 V.	Limited to single-motor, lower-power applications (e.g., wiper); lacks dual-HB and thermal sensor interface.	Select when board space is constrained and only one motor channel is needed; not suitable for park brake or seat positioning.
DRV8305-Q1	Three-phase gate driver with integrated FETs (not external MOSFET control), no SPI diagnostics, no thermal sensor interface.	Targeted at BLDC fans/pumps - lacks CSA multiplexing, programmable freewheeling, and ASIL-aligned diagnostic registers.	Choose for brushless motor control where integrated FETs reduce BOM count; avoid for automotive H-bridge DC motor systems requiring external MOSFET flexibility.

Compared with TLE9201SE and DRV8305-Q1, the L99H01XPTR uniquely combines dual independent H-bridges, external MOSFET control, SPI-configurable diagnostics, and direct thermal diode interfacing - making it the only option qualified for ASIL-C park brake and seat positioning systems requiring functional safety compliance and thermal resilience.

Availability

L99H01XPTR is available at Aetrix Electronics and suitable for automotive seat positioning, park brake actuation, and power door lock systems requiring stable component supply across extended vehicle lifecycles and rigorous AEC-Q100 qualification.

Supply support for L99H01XPTR 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 AEC-Q100 and ISO 26262 certified product portfolios.

The L99H01XPTR belongs to ST's L99 family of automotive motor driver ASSPs, engineered specifically for functional safety-critical DC motor control in body electronics - emphasizing diagnostic coverage, thermal robustness, and external MOSFET flexibility.

FAQ

What is the maximum PWM frequency supported by the L99H01XPTR?

The L99H01XPTR supports PWM operation up to 30 kHz, as specified in Section 2.4 of the datasheet. This frequency enables low-audible-noise motor control while maintaining sufficient gate drive slew rate for external N-MOSFETs with typical Q_g < 50 nC. Operation above 30 kHz risks incomplete gate charging due to charge pump current limits and increased switching losses.

Does the L99H01XPTR integrate reverse battery protection?

No, the L99H01XPTR does not integrate reverse battery protection circuitry. Instead, it provides a dedicated control output (pin not listed in PowerSSO-36 pinout but referenced in functional description) to drive an external reverse-battery protection N-MOSFET gate - allowing system designers to select MOSFETs optimized for voltage rating, R_DS(on), and thermal performance.

How is thermal monitoring implemented with external MOSFETs?

The L99H01XPTR uses its TS/ACT_OFF pin to interface with the forward voltage of external MOSFET-integrated thermal diodes. When configured in thermal sensor mode (EXT_TS-bit = high), the IC measures the diode voltage drop across a known current source and converts it to temperature via calibrated lookup tables stored in ROM - enabling junction temperature tracking without external ADC or signal conditioning.

Can the current sense amplifier be used for both motor phases simultaneously?

No, the current sense amplifier has a single output (CSO) and multiplexed inputs (CSI1±, CSI2±), meaning it sequentially samples either phase 1 or phase 2 current based on SPI-configured MUX settings. Simultaneous dual-phase sensing requires external hardware or time-division multiplexing with tight timing control - confirmed by Table 38 (Multiplexer for CSA) and ApplReg2 bit definitions in the datasheet.

L99H01XPTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSSO-36 Exposed Bottom Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: -

Motor Type - AC, DC:: Brushed DC

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (2)

Interface:: SPI

Technology:: CMOS

Step Resolution:: -

Applications:: -

Current - Output:: -

Voltage - Supply:: 6V ~ 28V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36

L99H01XPTR FAQ

1.How can I place an order for L99H01XPTR through Aetrix?

Please submit a Request for Quotation (RFQ) for L99H01XPTR 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 L99H01XPTR reliable?

The price and inventory of L99H01XPTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L99H01XPTR is usually 5 days.

3.What payment methods are accepted for L99H01XPTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L99H01XPTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L99H01XPTR?

L99H01XPTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L99H01XPTR 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 L99H01XPTR?

For technical support, including L99H01XPTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L99H01XPTR requirements.

6.How does Aetrix verify that L99H01XPTR is sourced from the original manufacturer or authorized distributors?

All L99H01XPTR 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 L99H01XPTR meets industry standards.

7.What is the process for return or replacement of L99H01XPTR?

All L99H01XPTR units undergo pre-shipment inspection (PSI). If there is an issue with L99H01XPTR, 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 L99H01XPTR part is unused and in its original packaging.

Return procedure for L99H01XPTR:

1.Submit a request within 90 days.

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

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