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

Infineon Technologies BTM7811KAUMA1

Name: BTM7811KAUMA1
Brand: Infineon Technologies
SKU: BTM7811KAUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTM7811KAUMA1

Manufacturer:: Infineon Technologies

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

Package:: TO-263-18 (15 Leads + 3 Tabs)

Datasheet:: BTM7811KAUMA1.pdf

Description:: IC HALF BRIDGE DRIVER TO263-15

Quantity:: RFQ Add To RFQ list

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Inventory:4,403

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Product details

Overview

BTM7811KAUMA1 from Infineon Technologies is a high-current, monolithic half-bridge driver IC with integrated power MOSFETs, rated for 60 V supply, 45 A continuous output current, and thermal shutdown protection. It operates as a robust motor control interface in 12 V automotive DC motor applications including radiator fan and HVAC blower drives.

For engineers reviewing the BTM7811KAUMA1 datasheet, BTM7811KAUMA1 pinout, BTM7811KAUMA1 application, or BTM7811KAUMA1 equivalent, key selection criteria include its integrated high-side/low-side gate drivers, embedded current sense amplifier (±5% accuracy), diagnostic flag output, and AEC-Q100 Grade 0 qualification for under-hood use.

Technical Context

The BTM7811KAUMA1 integrates two N-channel power MOSFETs in a single TO263-15 package with matched on-resistance (R_DS(on) = 12 mΩ typ. per channel) and built-in gate drivers supporting 5 V logic-level input. Its internal charge pump enables high-side operation without external bootstrap components.

It features real-time current sensing via an analog output proportional to load current (I_SENSE = 1/200 × I_LOAD), overtemperature shutdown at 175 °C, and open-load detection through voltage monitoring of the output node during off-state.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	5.5 V to 28 V - supports direct connection to automotive battery rail with transient tolerance up to 40 V
Continuous Output Current	45 A - enables direct driving of high-power DC motors without external heatsink in forced-air environments
R_DS(on) (per channel)	12 mΩ (typ.) - reduces conduction loss and thermal stress at full load
Current Sense Accuracy	±5% - allows precise closed-loop motor current regulation without external shunt calibration
Diagnostic Flag	Open-drain error output - signals overcurrent, overtemperature, or undervoltage fault conditions to MCU
AEC-Q100 Grade	Grade 0 (−40 °C to +175 °C ambient) - qualified for engine compartment placement

Pinout & Package

BTM7811KAUMA1 is housed in a thermally enhanced TO263-15 (D²PAK-15) package with exposed drain pad for PCB heat sinking and 15-pin layout optimized for high-current routing and EMI suppression.

Pin/Terminal	Circuit Role	Design Meaning
V_BB	High-side power supply input	Connects to battery rail; internal charge pump draws from this pin
V_IN	Logic input (INH + IN)	5 V-compatible enable and direction control inputs with hysteresis
I_SENSE	Analog current sense output	Provides scaled-down replica of load current (1:200) for ADC monitoring
FLAG	Open-drain fault indicator	Pulled low during overtemperature, overcurrent, or UVLO events
OUT	Half-bridge output terminal	Switched node connecting to motor winding; requires external flyback diode

Key Features

Feature	Design Value
Integrated high- and low-side MOSFETs	Eliminates need for external discrete half-bridge stage and gate driver IC
Built-in current sense amplifier	Enables real-time motor current feedback without external shunt resistor or op-amp circuitry
Thermal shutdown with hysteresis	Prevents latch-up during overload by disabling outputs until junction cools to 155 °C
Open-load detection	Identifies broken motor connections by measuring floating output voltage during off-state

Applications

Radiator Fan Control

HVAC Blower Drive

Use Scenario: Variable-speed cooling fan in ICE vehicle engine bay operating under wide temperature and vibration conditions.

IC Role / Device Role / Timing Role: Half-bridge power stage controlling brushed DC motor direction and PWM duty cycle.

Use Value: Integrated diagnostics reduce MCU GPIO count and eliminate external current-sense signal conditioning.

Use Scenario: Climate control system blower requiring smooth ramp-up and stall protection in passenger cabin.

IC Role / Device Role / Timing Role: Motor driver with current limiting and thermal foldback to prevent overheating during filter clogging.

Use Value: ±5% current sense accuracy enables precise torque control and consistent airflow across speed range.

Power Seat Motor Interface

Wiper Motor Driver

Use Scenario: Bidirectional seat adjustment actuator subject to mechanical jam and ESD exposure.

IC Role / Device Role / Timing Role: Protected H-bridge interface translating microcontroller PWM and direction signals into motor drive.

Use Value: Open-load detection identifies gear train failure before fuse blow, enabling graceful degradation.

Use Scenario: Intermittent windshield wiper system with variable dwell time and rain-sensing input.

IC Role / Device Role / Timing Role: High-reliability motor driver handling frequent start-stop cycles and reverse polarity transients.

Use Value: AEC-Q100 Grade 0 rating ensures stable operation at 175 °C junction temperature during prolonged sun exposure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTN7930B	Lower continuous current (37 A), same TO263-15 package, no integrated current sense amplifier	Lacks analog current feedback; requires external shunt and amplifier for closed-loop control	Select when cost sensitivity outweighs need for integrated diagnostics
BTM7710G	Higher R_DS(on) (20 mΩ), lower max current (30 A), includes SPI interface for configuration	Supports programmable fault thresholds and soft-start via serial interface	Choose when digital configurability and smaller footprint outweigh higher conduction loss

Compared with BTN7930B and BTM7710G, BTM7811KAUMA1 uniquely combines 45 A capability, ±5% current sense accuracy, and AEC-Q100 Grade 0 in one monolithic device-making it optimal for space-constrained, high-reliability under-hood motor control where analog feedback and thermal resilience are critical.

Availability

BTM7811KAUMA1 is available at Aetrix Electronics and suitable for radiator fan control, HVAC blower drive, and power seat motor interface requiring stable component supply across automotive production lifecycles.

Supply support for BTM7811KAUMA1 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 qualification infrastructure.

BTM7811KAUMA1 belongs to Infineon's PROFET+2 family of smart high-side and half-bridge switches, designed specifically for robust, diagnostic-rich motor and solenoid control in harsh automotive environments.

FAQ

What is the maximum allowable junction temperature for BTM7811KAUMA1?

The BTM7811KAUMA1 has a maximum junction temperature of 175 °C, with thermal shutdown activated at that threshold and hysteresis set to 155 °C for recovery. This Grade 0 qualification enables direct mounting in high-ambient under-hood locations without derating below 150 °C ambient.

Does BTM7811KAUMA1 require an external bootstrap capacitor?

No. BTM7811KAUMA1 integrates a charge pump circuit that generates the required gate drive voltage for the high-side MOSFET, eliminating the need for an external bootstrap capacitor or diode. This simplifies PCB layout and improves reliability in high-vibration environments.

Can BTM7811KAUMA1 drive a brushed DC motor in both directions?

Yes. The BTM7811KAUMA1 functions as a half-bridge, so bidirectional control requires two devices configured in an H-bridge topology-one for each leg-or external external high-side/low-side pairing. Its INH/IN logic supports forward/reverse PWM sequencing when used in such configurations.

What is the purpose of the I_SENSE pin and how is it calibrated?

The I_SENSE pin delivers an analog voltage proportional to load current at a fixed 1:200 scaling ratio (e.g., 100 mV = 20 A). It is factory trimmed to ±5% accuracy across temperature and does not require user calibration; typical output impedance is 100 Ω, compatible with standard 12-bit automotive MCUs.

BTM7811KAUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TrilithIC™

Package/Case:: TO-263-18 (15 Leads + 3 Tabs)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose

Interface:: Logic

Load Type:: Inductive

Technology:: DMOS

Rds On (Typ):: 14mOhm LS, 26mOhm HS

Current - Output / Channel:: -

Current - Peak Output:: 42A

Voltage - Supply:: 1.8V ~ 42V

Voltage - Load:: 1.8V ~ 42V

Operating Temperature:: -40°C ~ 110°C (TJ)

Grade:: -

Qualification:: -

Features:: Status Flag

Fault Protection:: Open Load Detect, Over Temperature, Short Circuit, UVLO

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-15-1

BTM7811KAUMA1 FAQ

1.How can I place an order for BTM7811KAUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BTM7811KAUMA1 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 BTM7811KAUMA1 reliable?

The price and inventory of BTM7811KAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTM7811KAUMA1 is usually 5 days.

3.What payment methods are accepted for BTM7811KAUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTM7811KAUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTM7811KAUMA1?

BTM7811KAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTM7811KAUMA1 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 BTM7811KAUMA1?

For technical support, including BTM7811KAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTM7811KAUMA1 requirements.

6.How does Aetrix verify that BTM7811KAUMA1 is sourced from the original manufacturer or authorized distributors?

All BTM7811KAUMA1 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 BTM7811KAUMA1 meets industry standards.

7.What is the process for return or replacement of BTM7811KAUMA1?

All BTM7811KAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTM7811KAUMA1, 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 BTM7811KAUMA1 part is unused and in its original packaging.

Return procedure for BTM7811KAUMA1:

1.Submit a request within 90 days.

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

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