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

Infineon Technologies TLE4729GXUMA1

Name: TLE4729GXUMA1
Brand: Infineon Technologies
SKU: TLE4729GXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4729GXUMA1

Manufacturer:: Infineon Technologies

Category:: Motor Drivers, Controllers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: TLE4729GXUMA1.pdf

Description:: IC MTR DRVR BIPOLAR 5V-16V 24DSO

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Product details

Overview

TLE4729GXUMA1 from Infineon Technologies is a bipolar 2-phase stepper motor driver IC with two integrated full-bridge outputs (0.7 A per phase), chopper-based current control, and dual error-flag outputs for open-load, short-circuit, and over-temperature detection. It operates from 5–16 V supply, supports microprocessor-controlled phase direction and current mode selection (Hold/Normal/Accelerate), and features inhibit mode with <50 µA quiescent current - used in automotive HVAC actuators, industrial valve positioners, and precision lab equipment.

For engineers reviewing the TLE4729GXUMA1 datasheet, TLE4729GXUMA1 pinout, TLE4729GXUMA1 application, or TLE4729GXUMA1 equivalent, key selection considerations include its PG-DSO-24-16 package, inverse current programming vs. TLE4728G, oscillator frequency tuning via external 2.2 nF capacitor, and dual independent error signaling (Error 1 for open-load/short-to-VS; Error 2 for short-to-GND/over-temp).

Technical Context

The TLE4729GXUMA1 integrates two independent full-bridge output stages with fast integrated freewheeling diodes and crossover-current-free switching. Its internal oscillator (~25 kHz with 2.2 nF on OSC pin) drives chopper control for both phases with offset turn-on timing to reduce EMI and thermal stress.

Current magnitude per phase is set by four digital inputs (IX0/IX1 per phase) enabling four modes: no current (inhibit), hold (0.155 × I_set), normal (I_set = 450 mA at R_sense = 1 Ω), and accelerate (1.55 × I_set). Phase direction is controlled separately via PH1/PH2 inputs, allowing bidirectional microstepping-compatible operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	±0.7 A per phase - supports bipolar stepper motors up to NEMA 11 size with constant-current chopping.
Supply Voltage Range	5–16 V - compatible with 12 V automotive and industrial DC rails; absolute max 45 V for transient robustness.
Current Programming	Four digital inputs (IX0/IX1 ×2) - select hold/normal/accelerate/no-current modes with 0.155×/1×/1.55×/0× scaling of I_set.
Oscillator Frequency	~25 kHz (typ.) with 2.2 nF to GND on OSC pin - sets chopper switching rate for optimal torque ripple and thermal performance.
Error Outputs	Two open-drain flags: Error 1 (open-load/short-to-VS), Error 2 (short-to-GND/over-temp) - enable fault isolation without external logic.
Quiescent Current	<50 µA in inhibit mode - enables low-power standby in battery-operated positioning systems.
Thermal Protection	Prealarm at 120 °C, shutdown at 140 °C, 20 K hysteresis - prevents latch-up during sustained overload or poor heatsinking.

Pinout & Package

Package: PG-DSO-24-16 (24-pin exposed-pad SOIC variant with 16 functional pins and 8 GND leads for thermal and EMI performance).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 23, 24	Current Program Inputs (IX0/IX1 ×2)	Select per-phase current mode (no current/hold/normal/accelerate); logic thresholds: VIH = 1.7 V, VIL = 0.8 V.
3, 22	Phase Direction Inputs (PH1, PH2)	Control current polarity per winding; H = Q11→Q12 flow, L = reverse - enables full-step and half-step sequencing.
4	Oscillator Timing Input	Connect 2.2 nF capacitor to GND to set ~25 kHz chopper frequency; internal oscillator drives both bridges with phase offset.
9, 12, 13, 16	Full-Bridge Outputs (Q11/Q12/Q21/Q22)	Push-pull drivers with integrated freewheeling diodes; V_sat ≤ 0.5 V @ 0.7 A - minimizes conduction loss and heat generation.
10, 15	Current Sense Resistors (R1, R2)	Connect external sense resistors (typically 1 Ω) to set I_set = 450 mA; comparator threshold V_ch = 410 mV (hold), V_ca = 630 mV (accelerate).
11	Power Supply (V_S+)	Motor supply input; requires local decoupling: ≥47 µF electrolytic + 100 nF ceramic, placed near pin 11 and GND pins.
14, 21	Error Flag Outputs (Error 2, Error 1)	Open-drain outputs pulled low on fault; Error 1 = open-load/short-to-VS, Error 2 = short-to-GND/over-temp - support sequential bridge reactivation for fault location.
5–8, 17–20	Ground (GND)	Eight dedicated GND pins internally connected to leadframe - ensure low-impedance return path and thermal dissipation via exposed pad.

Key Features

Feature	Design Value
Inverse current programming vs. TLE4728G	Enables drop-in replacement in legacy designs with updated firmware handling of IX0/IX1 logic states.
Dual independent error flags	Allows hardware-level fault classification (open-load vs. short-circuit) without MCU intervention or additional comparators.
Offset-phase turn-on of output stages	Reduces peak supply current and system-level EMI by staggering bridge switching edges within one oscillator period.
Integrated fast freewheeling diodes	Eliminates need for 4 external Schottky diodes per bridge - saves PCB area and improves reliability in harsh environments.
AEC-Q100 qualified	Validated for automotive applications including temperature cycling, humidity testing, and ESD robustness per Grade 2 (–40 to +105 °C case).

Applications

Automotive HVAC Actuators

Industrial Valve Positioners

Use Scenario: Precise airflow control in vehicle climate systems using 2-phase stepper motors to drive blend doors.

IC Role / Device Role / Timing Role: Bipolar stepper driver with microstep-capable current control and real-time fault monitoring.

Use Value: Enables smooth, quiet actuation with <50 µA inhibit-mode current for energy-efficient sleep states between commands.

Use Scenario: Closed-loop positioning of pneumatic or electric control valves in process automation systems.

IC Role / Device Role / Timing Role: Constant-current H-bridge driver with dual error reporting for predictive maintenance and safe shutdown.

Use Value: Detects open-load (failed coil) and short-circuit (wiring fault) independently - reduces unplanned downtime in critical infrastructure.

Lab Equipment Stage Controllers

Medical Imaging Component Positioners

Use Scenario: High-repeatability XY motion control in optical alignment stages and spectrometer sample handlers.

IC Role / Device Role / Timing Role: Microprocessor-driven stepper driver with programmable current profiles and thermal prealarm.

Use Value: Prealarm at 120 °C allows graceful ramp-down before shutdown - preserves calibration integrity during extended duty cycles.

Use Scenario: Precision adjustment of collimators, filters, and detector mounts in X-ray and MRI subsystems.

IC Role / Device Role / Timing Role: AEC-Q100 qualified motor driver supporting safety-critical positioning with fault logging capability.

Use Value: Dual error flags feed into system-level diagnostics - meets IEC 62304 software safety requirements for Class B medical devices.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE4728GXUMA1	Identical pinout and function but standard (non-inverse) current programming logic; no inhibit mode.	Lacks automatic inhibit on all-IX-low; requires external logic for ultra-low-power standby.	Choose when migrating legacy TLE4728G designs without firmware updates for inverse logic handling.
DRV8811PWPR	2.5 A per phase, SPI interface, integrated current sense amplifier; no dual error flags or AEC-Q100 qualification.	Supports higher torque motors and closed-loop current feedback but lacks automotive-grade fault classification.	Choose for non-automotive industrial systems requiring >0.7 A drive or digital current monitoring.

Compared with TLE4729GXUMA1, TLE4728GXUMA1 simplifies firmware but sacrifices inhibit mode and fault isolation granularity, while DRV8811PWPR increases drive strength and interface flexibility at the cost of automotive compliance and discrete error signaling.

Availability

TLE4729GXUMA1 is available at Aetrix Electronics and suitable for automotive HVAC actuators, industrial valve positioners, lab equipment stage controllers, and medical imaging component positioners requiring stable component supply across long production lifecycles.

Supply support for TLE4729GXUMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200 standards.

The TLE high-voltage driver product line targets automotive and industrial motion control, delivering robust, integrated H-bridge solutions with built-in protection, diagnostics, and AEC-Q100 qualification for under-hood and factory-floor environments.

FAQ

What is the purpose of the OSC pin and how is it configured?

The OSC pin connects to an external 2.2 nF capacitor to ground to set the internal chopper oscillator frequency to approximately 25 kHz. This frequency determines the PWM switching rate for current regulation in both bridge outputs. The oscillator drives both phases with intentional timing offset to reduce peak supply current and electromagnetic interference.

How does the inhibit mode work and what triggers it?

Inhibit mode activates automatically when all four current-program inputs (IX0 and IX1 for both phases) are driven low. In this state, both bridges disable, motor current drops to zero, and total supply current falls below 50 µA. The mode is designed for ultra-low-power standby in battery-powered or energy-sensitive applications like automotive HVAC modules between commands.

What distinguishes Error 1 and Error 2 outputs?

Error 1 goes low for open-load conditions, short-circuits to VS, or over-temperature events. Error 2 goes low for short-circuits to ground or over-temperature. Both are open-drain outputs. Their independence allows hardware-level fault classification - for example, a low Error 1 with high Error 2 indicates an open winding, while both low suggests over-temperature or simultaneous shorts.

Can TLE4729GXUMA1 drive unipolar stepper motors?

No - the TLE4729GXUMA1 is designed exclusively for bipolar stepper motors and other inductive loads requiring full-bridge (H-bridge) current reversal. Its architecture provides bidirectional current control per winding via PH1/PH2 inputs and complementary Q11/Q12 or Q21/Q22 outputs. Unipolar motors require center-tapped windings and single-ended drive, which this IC does not support.

TLE4729GXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 24-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: Brushed DC

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (4)

Interface:: Parallel

Technology:: Bipolar

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 800mA

Voltage - Supply:: 5V ~ 16V

Voltage - Load:: 5V ~ 16V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-24-9

TLE4729GXUMA1 FAQ

1.How can I place an order for TLE4729GXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4729GXUMA1 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 TLE4729GXUMA1 reliable?

The price and inventory of TLE4729GXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4729GXUMA1 is usually 5 days.

3.What payment methods are accepted for TLE4729GXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4729GXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4729GXUMA1?

TLE4729GXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4729GXUMA1 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 TLE4729GXUMA1?

For technical support, including TLE4729GXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4729GXUMA1 requirements.

6.How does Aetrix verify that TLE4729GXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE4729GXUMA1 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 TLE4729GXUMA1 meets industry standards.

7.What is the process for return or replacement of TLE4729GXUMA1?

All TLE4729GXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4729GXUMA1, 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 TLE4729GXUMA1 part is unused and in its original packaging.

Return procedure for TLE4729GXUMA1:

1.Submit a request within 90 days.

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

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