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

Infineon Technologies BTS7741GNUMA1

Name: BTS7741GNUMA1
Brand: Infineon Technologies
SKU: BTS7741GNUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTS7741GNUMA1

Manufacturer:: Infineon Technologies

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

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: BTS7741GNUMA1.pdf

Description:: IC HALF BRIDGE DRIVER PDSO28

Quantity:: RFQ Add To RFQ list

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Inventory:2,699

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Product details

Overview

BTS7741GNUMA1 from Infineon Technologies is a quad-channel protected smart power switch IC integrating two high-side and two low-side vertical DMOS switches in a single P-DSO-28-14 package. It delivers 110 mΩ (HS) and 100 mΩ (LS) R_DS(on), supports 10 A peak current, operates up to 40 V supply, and enables H-bridge or independent switching for DC motor control in automotive body electronics.

For engineers reviewing the BTS7741GNUMA1 datasheet, BTS7741GNUMA1 pinout, BTS7741GNUMA1 application, or BTS7741GNUMA1 equivalent, key selection criteria include open-load detection in Off-mode, dual high-side status flag output, thermal shutdown with hysteresis, and integrated clamp diodes for inductive load commutation.

Technical Context

The device integrates three vertically stacked SMART SIPMOS® dies-two low-side and one double high-side-each mounted on isolated lead frames to minimize thermal coupling. Its TTL/CMOS-compatible Schmitt-trigger inputs (IH1/IH2/IL1/IL2) drive gate drivers with ESD protection, while internal op-amp-based short-circuit detection monitors V_DS against a reference voltage to dynamically limit current under overload.

Overtemperature protection activates at T_j ≥ 150 °C with hysteresis, forcing high-side outputs off and pulling ST low; undervoltage lockout engages below V_UVOFF = ~5.5 V (typ.), and open-load diagnosis requires external pull-up resistors from SH1/SH2 to DHVS to sense floating output voltage during Off-state.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on) HS	110 mΩ typ. @ 25 °C - enables <1.1 W conduction loss at 3.3 A continuous load
R_DS(on) LS	100 mΩ typ. @ 25 °C - reduces heat generation in low-side PWM paths
Peak current	10 A typ. @ 25 °C, t_P < 100 ms - supports motor stall and startup surges
Quiescent current	5 μA typ. @ 25 °C - critical for always-on automotive modules with battery drain constraints
Supply range	4.5–40 V - covers full automotive battery range including cold-crank (4.5 V) and load-dump (40 V)
PWM frequency	Up to 1 kHz - sufficient for brushed DC motor speed control without audible noise
Thermal resistance	R_thJA = 60 K/W - requires PCB copper area ≥6 cm² for safe 3.3 A continuous operation

Pinout & Package

Packaged in P-DSO-28-14: 28-pin exposed-pad SOIC with three isolated internal lead frames (HS, LS1, LS2), enabling independent thermal management and reduced R_thJC of 20 K/W per path.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 25, 28 DL1	Drain of low-side switch 1	Power output node tied to LS1 lead frame; direct metal bridge to frame lowers thermal resistance
2 IL1	Analog gate input for LS1	Connects to internal N-MOS gate driver; accepts 0–10 V logic for PWM control
5, 10, 19, 24 DHVS	High-side drain & supply rail	Common power input for both HS switches and clamp diode anodes; connects to HS lead frame
6 GND	Ground reference	Signal ground for control circuitry; separate from power return paths
7 IH1, 9 IH2	Digital enable inputs for HS1/HS2	TTL/CMOS-compatible Schmitt triggers with hysteresis prevent noise-induced switching
8 ST	Open-drain status flag	Active-low error indicator (overtemp, UVLO, open-load); requires external pull-up resistor
12, 14, 15, 18 DL2	Drain of low-side switch 2	Power output node tied to LS2 lead frame; electrically isolated from LS1 path
13 IL2	Analog gate input for LS2	Independent PWM input for second low-side channel
16, 17 SL2	Source of low-side switch 2	Return path for LS2 current; connected to LS2 lead frame
20, 21 SH2	Source of high-side switch 2	Switched output for HS2; used as H-bridge high-side or standalone load driver
22, 23 SH1	Source of high-side switch 1	Switched output for HS1; paired with SH2 for bidirectional motor control
26, 27 SL1	Source of low-side switch 1	Return path for LS1 current; enables half-bridge configuration with SH1

Key Features

Feature	Design Value
Configurable topology	Supports H-bridge, dual half-bridge, or four independent switches via pin-strapping and external routing
Off-state open-load detection	Measures SH1/SH2 voltage vs. DHVS using internal comparator; requires external R<R₀ pull-up
Integrated clamp diodes	Internal power diodes across HS outputs absorb inductive kickback without external components
Diagnostic status flag	Single open-drain ST pin reports overtemp, UVLO, and open-load faults for both HS channels
Short-circuit protection	Real-time V_DS monitoring with current limiting that scales with junction temperature

Applications

Automotive Seat Motor Control

Power Window Lift Module

Use Scenario: Bidirectional actuation of seat positioners using 12 V brushed DC motors with stall detection.

IC Role / Device Role / Timing Role: Dual high-side + dual low-side configured as full H-bridge to reverse motor polarity and manage regenerative energy.

Use Value: Integrated clamp diodes eliminate need for external flyback diodes; ST flag signals motor jam or wiring fault.

Use Scenario: Controlled up/down movement of automotive window glass with anti-pinch safety logic.

IC Role / Device Role / Timing Role: High-side switches drive motor supply; low-side switches handle PWM-controlled return path and current sensing.

Use Value: Off-mode open-load detection confirms motor disconnection before initialization; quiescent current <5 μA prevents battery drain.

Roof Sunshade Actuator

Trunk Lid Lifter

Use Scenario: Slow-speed extension/retraction of fabric sunshade using compact 12 V gearmotor.

IC Role / Device Role / Timing Role: Independent high-side switches energize motor windings; low-sides provide controlled freewheeling paths.

Use Value: R_DS(on) ≤110 mΩ limits self-heating at 2.5 A continuous; thermal shutdown protects against prolonged obstruction.

Use Scenario: Power-assisted trunk opening/closing with position feedback and soft-stop behavior.

IC Role / Device Role / Timing Role: Quad-switch mode drives dual-motor system: one motor for lift, one for latch release.

Use Value: Dual ST-flag diagnostics allow independent fault reporting per motor; UVLO prevents erratic behavior during cranking.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel smart power switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTS7740GNUMA1	Lacks Off-mode open-load detection; lower current limit (~8 A peak)	Suitable for cost-sensitive non-safety-critical loads where diagnostic depth is reduced	Select when ST flag reporting only overtemp/UVLO is sufficient and board space allows external open-load sensing
BTS724G	Single-channel high-side switch (40 mΩ R_DS(on)); no low-side integration or ST flag	Requires discrete low-side FETs and external fault logic for full H-bridge use	Choose for modular designs needing scalable channel count and higher efficiency per switch

Compared with BTS7740GNUMA1 and BTS724G, BTS7741GNUMA1 uniquely combines dual high-side status reporting, Off-mode open-load detection, and integrated low-side switches in one thermally optimized package-enabling compact, self-diagnosing motor interfaces without external protection components.

Availability

BTS7741GNUMA1 is available at Aetrix Electronics and suitable for automotive seat control, power window modules, roof sunshade actuators, and trunk lid lifters requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for BTS7741GNUMA1 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 microcontrollers, and industrial gate drivers with global automotive qualification standards.

The TrilithIC family-including BTS7741GNUMA1-is engineered for intelligent power distribution in 12 V automotive body electronics, emphasizing integrated protection, diagnostics, and thermal robustness in compact packages.

FAQ

What is the maximum continuous current rating for BTS7741GNUMA1?

The device supports 3.3 A continuous current per channel under typical PCB cooling conditions (6 cm² copper area, R_thJA = 60 K/W). Peak current reaches 10 A for pulses under 100 ms at T_A = 25 °C, limited internally by thermal foldback and V_DS-based short-circuit protection-not by bond wire rating alone.

How does open-load detection work in Off-mode?

When IH1/IH2 = 0 and HS outputs are disabled, the IC measures voltage at SH1/SH2 relative to DHVS using an internal comparator. An external resistor (R < R₀) must pull SH1/SH2 toward DHVS; if voltage exceeds threshold due to open circuit, ST pulls low after delay. No detection occurs without this resistor.

Can BTS7741GNUMA1 be used in a single-ended (non-H-bridge) configuration?

Yes-each high-side and low-side switch operates independently. For example, HS1+LS1 can drive a solenoid load between SH1 and SL1, while HS2+LS2 control a second load. Pin configuration allows half-bridge, full-bridge, or quad-switch topologies without hardware modification.

Is the ST status flag compatible with 3.3 V microcontrollers?

Yes-the ST pin is open-drain with internal Zener clamping to 5.4 V max. When pulled up to 3.3 V, it safely interfaces with 3.3 V GPIOs. The output sinks up to 2 mA (I_ST) and asserts low for overtemperature, UVLO, or open-load faults on either high-side channel.

BTS7741GNUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TrilithIC™

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

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):: 100mOhm LS, 110mOhm HS

Current - Output / Channel:: -

Current - Peak Output:: 10A

Voltage - Supply:: 1.8V ~ 42V

Voltage - Load:: 1.8V ~ 42V

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

Grade:: -

Qualification:: -

Features:: Status Flag

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

Mounting Type:: Surface Mount

Supplier Device Package:: P-DSO-28-14

BTS7741GNUMA1 FAQ

1.How can I place an order for BTS7741GNUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BTS7741GNUMA1 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 BTS7741GNUMA1 reliable?

The price and inventory of BTS7741GNUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTS7741GNUMA1 is usually 5 days.

3.What payment methods are accepted for BTS7741GNUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTS7741GNUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTS7741GNUMA1?

BTS7741GNUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTS7741GNUMA1 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 BTS7741GNUMA1?

For technical support, including BTS7741GNUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTS7741GNUMA1 requirements.

6.How does Aetrix verify that BTS7741GNUMA1 is sourced from the original manufacturer or authorized distributors?

All BTS7741GNUMA1 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 BTS7741GNUMA1 meets industry standards.

7.What is the process for return or replacement of BTS7741GNUMA1?

All BTS7741GNUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTS7741GNUMA1, 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 BTS7741GNUMA1 part is unused and in its original packaging.

Return procedure for BTS7741GNUMA1:

1.Submit a request within 90 days.

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

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