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

Infineon Technologies BTS7741G

Name: BTS7741G
Brand: Infineon Technologies
SKU: BTS7741G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BTS7741G

Manufacturer:: Infineon Technologies

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

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

Datasheet:: BTS7741G.pdf

Description:: IC HALF BRIDGE DRIVER 7A PDSO28

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BTS7741G from Infineon Technologies is a quad-channel protected D-MOS switch driver with two high-side (110 mΩ R_DS(on)) and two low-side (100 mΩ R_DS(on)) switches in one P-DSO-28-14 package, supporting H-bridge or independent switching configurations for DC motor control up to 40 V supply and 10 A peak current.

For engineers reviewing the BTS7741G datasheet, BTS7741G pinout, BTS7741G application, or BTS7741G equivalent, key selection considerations include open-load detection in Off-mode, integrated short-circuit/overtemperature/UVLO protection, status flag diagnostics, and PWM capability up to 1 kHz in automotive and industrial motor drive systems.

Technical Context

The BTS7741G integrates three vertically stacked SMART SIPMOS® dies - one double high-side switch and two independent low-side switches - each with dedicated lead frames for thermal separation and optimized power dissipation. All channels feature TTL/CMOS-compatible Schmitt-trigger inputs, internal clamp diodes, and active current limiting based on V_DS monitoring.

High-side switches provide open-drain status flag (ST) output with Zener clamping, reporting overtemperature, open-load (with external resistor), and undervoltage faults; low-side switches lack status output but retain full short-circuit and thermal protection. UVLO hysteresis ensures clean enable/disable at V_UVON = ~5.5 V and V_UVOFF = ~4.5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage	42 V max; supports 12 V/24 V automotive rails with 28 V SCP threshold for robust short-circuit handling
R_DS(on) HS / LS	110 mΩ / 100 mΩ typ. @ 25 °C; enables <1.1 W conduction loss per channel at 3.3 A continuous
Peak current	10 A typ. @ 25 °C, t_P < 100 ms; internally limited for transient overload resilience
Quiescent current	5 µA typ. @ 25 °C; supports always-on vehicle modules without battery drain
PWM frequency	Up to 1 kHz; sufficient for brushed DC motor speed control without audible noise or gate drive losses
Open-load detection	Active in Off-mode only; requires external pull-up resistor from SH1/SH2 to DHVS for voltage-sense operation
Thermal resistance	R_thjC = 20 K/W (HS/LS path); enables 7 W dissipation per channel before junction exceeds 150 °C on reference PCB

Pinout & Package

Packaged in P-DSO-28-14: 28-pin exposed-pad SOIC with three isolated lead frames (HS, LS1, LS2) for thermal and electrical separation; pin 19 (DHVS) serves as common high-side drain/power input and thermal anchor.

Pin/Terminal	Circuit Role	Design Meaning
7, 9 (IH1, IH2)	Digital enable input for HS1/HS2	TTL/CMOS-compatible Schmitt-trigger inputs with ESD clamping; drive internal gate drivers directly
1, 3, 25, 28 (DL1)	Drain of low-side switch 1	Connected to LS1 lead frame; used for load return path or freewheeling in H-bridge configuration
12, 14, 15, 18 (DL2)	Drain of low-side switch 2	Connected to LS2 lead frame; electrically and thermally isolated from DL1 for dual independent loads
5, 10, 19, 24 (DHVS)	Common high-side drain & power rail	Shared power input and thermal sink for both HS switches; must be routed with low-inductance, high-current trace
22, 23 (SH1), 20, 21 (SH2)	Sources of HS1 and HS2	Output terminals for high-side switching; require external flyback paths when driving inductive loads
26, 27 (SL1), 16, 17 (SL2)	Sources of LS1 and LS2	Ground-referenced outputs; SL pins are direct metal bridges to respective lead frames for minimal R_DS(on)
8 (ST)	Open-drain status flag	Reports HS faults only (OT, OL, UVLO); requires external pull-up to DHVS or logic rail for active-low signaling
2 (IL1), 13 (IL2)	Analog gate inputs for LS1/LS2	Direct connection to N-channel MOSFET gates; enable precise PWM duty-cycle control without logic-level translation

Key Features

Feature	Design Value
Configurable topology	Supports independent quad-switch, dual H-bridge, or single H-bridge + two low-side modes via pin-strapping and external routing
Integrated protection suite	Short-circuit (to GND/V_S), overtemperature (with hysteresis), UVLO, and open-load detection - all implemented without external components
Diagnosis-ready interface	Status flag (ST) provides consolidated fault reporting for both high-side channels with Zener-clamped open-drain output
Low-power standby	5 µA quiescent current enables permanent connection to battery in automotive body-control modules
Thermally optimized layout	Three isolated lead frames reduce thermal crosstalk; R_thjC = 20 K/W allows >7 W per channel on standard 6 cm² PCB copper area

Applications

Automotive Seat Motor Control

Industrial Conveyor Belt Driver

Use Scenario: Bidirectional adjustment of power seats using 12 V brushed DC motors with position feedback.

IC Role / Device Role / Timing Role: Dual H-bridge controller managing forward/reverse motion and braking via coordinated HS/LS switching.

Use Value: Integrated open-load detection confirms motor disconnection during service; 10 A peak rating handles stall currents without external fusing.

Use Scenario: Speed-regulated 24 V DC conveyor drive in packaging machinery with frequent start/stop cycles.

IC Role / Device Role / Timing Role: Quad-switch configuration enabling independent control of main drive and tensioner motors.

Use Value: 1 kHz PWM support enables smooth low-speed operation; UVLO prevents erratic behavior during brown-out events.

Truck Mirror Adjustment Module

Medical Infusion Pump Actuator

Use Scenario: Compact, sealed mirror positioning system requiring ESD-hardened, low-I_Q motor control.

IC Role / Device Role / Timing Role: Independent high-side switch + low-side pair driving dual-axis mirror actuators.

Use Value: 2 kV HBM ESD rating on LS inputs ensures reliability in assembly environments; 5 µA I_Q extends battery life in wireless modules.

Use Scenario: Precision peristaltic pump actuation where motor stall must trigger immediate shutdown.

IC Role / Device Role / Timing Role: Single H-bridge channel with real-time status flag feeding microcontroller fault handler.

Use Value: Overtemperature hysteresis prevents nuisance tripping during extended infusions; ST pin enables deterministic fault logging.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side/low-side motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTS7740G	Lacks open-load detection in Off-mode; identical R_DS(on), protection, and package	Not suitable where motor disconnection monitoring is required during sleep mode	Select BTS7741G when diagnostic completeness outweighs minor cost premium
BTS716G	Single-channel high-side switch (140 mΩ), no low-side or status flag; SO-8 package	Requires external low-side FETs and fault logic; limited to simpler, lower-current loads	Choose for space-constrained designs needing only one protected high-side switch

Compared with BTS7740G, BTS7741G adds critical Off-mode open-load detection without sacrificing protection or thermal performance; versus BTS716G, it delivers integrated quad-channel functionality and diagnostics in a single 28-pin package, reducing BOM count and PCB area by >40%.

Availability

BTS7741G is available at Aetrix Electronics and suitable for automotive seat control, industrial conveyor drives, truck mirror modules, and medical infusion pump actuation requiring stable component supply across extended product lifecycles.

Supply support for BTS7741G 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.

The BTS7741G belongs to Infineon's TrilithIC family of intelligent power switches, designed specifically for robust, diagnosis-enabled DC motor control in harsh automotive and industrial environments.

FAQ

What is the maximum continuous current rating for BTS7741G?

The BTS7741G does not specify a continuous current rating in its datasheet; instead, it defines a 10 A peak current (t_P < 100 ms) under 25 °C ambient. Continuous current depends on PCB layout, cooling area, and ambient temperature - with R_thja = 60 K/W, sustained 3.3 A results in ~100 °C junction rise above 25 °C ambient, staying within the 150 °C T_j limit.

How is open-load detection implemented and what external components are required?

Open-load detection operates only in Off-mode and requires an external pull-up resistor (R₀ < specified value) from SH1 or SH2 to DHVS. The internal circuit measures voltage at the source pin; if it exceeds a threshold due to leakage or disconnection, the ST pin pulls low after a delay. No resistor is needed if this feature is unused, preserving 5 µA quiescent current.

Can BTS7741G be used in a single H-bridge configuration with external freewheeling diodes?

Yes - the BTS7741G's internal body diodes are rated for freewheeling inductive loads in H-bridge mode, eliminating need for external diodes. However, external Schottky diodes may be added to reduce power loss and improve efficiency at high PWM frequencies (>500 Hz), especially when operating near thermal limits.

Does the status flag (ST) report low-side switch faults?

No - the ST pin reports faults only for the two high-side switches: overtemperature, open-load (with external resistor), and undervoltage lockout. Low-side switches have full protection (short-circuit, overtemperature) but no status output; fault detection for LS channels must be implemented externally via current sensing or voltage monitoring.

BTS7741G Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: TrilithIC

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

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose

Interface:: -

Load Type:: Inductive

Technology:: DMOS

Rds On (Typ):: 100mOhm LS, 110mOhm HS

Current - Output / Channel:: 7A

Current - Peak Output:: 10A

Voltage - Supply:: 1.8V ~ 42V

Voltage - Load:: 1.8V ~ 42V

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

Grade:: -

Qualification:: -

Features:: Slew Rate Controlled, Status Flag

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

Mounting Type:: Surface Mount

Supplier Device Package:: P-DSO-28

BTS7741G FAQ

1.How can I place an order for BTS7741G through Aetrix?

Please submit a Request for Quotation (RFQ) for BTS7741G 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 BTS7741G reliable?

The price and inventory of BTS7741G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTS7741G is usually 5 days.

3.What payment methods are accepted for BTS7741G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTS7741G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BTS7741G?

BTS7741G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BTS7741G 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 BTS7741G?

For technical support, including BTS7741G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTS7741G requirements.

6.How does Aetrix verify that BTS7741G is sourced from the original manufacturer or authorized distributors?

All BTS7741G 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 BTS7741G meets industry standards.

7.What is the process for return or replacement of BTS7741G?

All BTS7741G units undergo pre-shipment inspection (PSI). If there is an issue with BTS7741G, 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 BTS7741G part is unused and in its original packaging.

Return procedure for BTS7741G:

1.Submit a request within 90 days.

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

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