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Infineon Technologies BTS7740GNUMA1
- Part No.:
- BTS7740GNUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
BTS7740GNUMA1.pdf
- Description:
- IC HALF BRIDGE DRIVER PDSO28
- Quantity:
- Payment:
- Shipping:
Inventory:3,630
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Product details
Overview
BTS7740GNUMA1 from Infineon Technologies is a high-current monolithic half-bridge driver IC designed for automotive DC motor control. It integrates two N-channel power MOSFETs (high-side and low-side), charge pump, logic interface, and comprehensive protection including overcurrent, thermal shutdown, and undervoltage lockout. Rated for 40 V supply, 70 A peak output current, and operates up to 150 °C junction temperature - used in power seat actuators and HVAC damper drives.
For engineers reviewing the BTS7740GNUMA1 datasheet, BTS7740GNUMA1 pinout, BTS7740GNUMA1 application, or BTS7740GNUMA1 equivalent, key selection criteria include integrated high-side/low-side drive capability, diagnostic feedback via INH/IS pins, AEC-Q100 qualification, and compatibility with 3.3 V/5 V logic inputs in safety-critical 12 V automotive systems.
Technical Context
The BTS7740GNUMA1 implements a fully integrated half-bridge topology with embedded gate drivers, bootstrap-based high-side supply, and real-time current sensing via proportional IS output. Its internal charge pump sustains high-side FET conduction during 100% duty cycle operation, while integrated diagnostics report open-load, short-to-ground, and overtemperature conditions through dedicated pins.
Control logic accepts standard TTL/CMOS-compatible input signals on IN and EN pins, enabling PWM-driven bidirectional motor control. The device features fast switching (tON/tOFF ≈ 2.5 µs typical) and supports reverse battery protection down to –16 V, meeting stringent automotive electrical environment requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 40 V - supports full 12 V automotive battery range including cold-crank (4.5 V) and load-dump (40 V) transients. |
| Continuous Output Current | 28 A - enables direct driving of medium-power DC motors without external heatsinking in ambient ≤ 85 °C. |
| Peak Output Current | 70 A (10 ms) - handles motor stall and inrush currents in seat/mirror actuation cycles. |
| Junction Temperature Range | –40 °C to +150 °C - qualified for under-hood and cabin-mounted automotive modules per AEC-Q100 Grade 0. |
| Diagnostic Output | Proportional current sense (IS) and enable/inhibit (INH) flags - provides real-time fault classification without ADC overhead. |
| Logic Input Compatibility | 3.3 V / 5 V CMOS/TTL - interfaces directly with microcontrollers and ASICs without level-shifting circuitry. |
Pinout & Package
Package: PG-DSO-28 (28-pin exposed-pad SOIC variant with thermal pad, RoHS-compliant, moisture sensitivity level 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | Main power supply input | Connects to 12 V battery rail; internal clamp protects against load dump up to 40 V. |
| GND | Power ground | Low-impedance return path for both power and logic sections; tied to exposed thermal pad. |
| IN | Bridge control input | Active-high logic input controlling high-side/low-side switching state per truth table. |
| EN | Enable input | Global enable/disable; pulls internal logic low when grounded, disabling outputs and entering standby mode. |
| IS | Analog current sense output | 0.2% proportional current mirror output (IOUT × 1/2000); enables precise stall detection and torque monitoring. |
| INH | Diagnostic flag output | Open-drain active-low signal indicating overtemperature, overcurrent, or undervoltage fault condition. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side and low-side power stages | Eliminates need for external gate drivers and discrete MOSFETs, reducing BOM count and PCB area by >40%. |
| AEC-Q100 qualified (Grade 0) | Validated for automotive applications requiring operation up to +150 °C ambient without derating. |
| Embedded charge pump | Enables 100% duty-cycle high-side conduction without external bootstrap capacitor or diode. |
| Real-time diagnostic feedback | Combines analog current sense (IS) and digital fault flag (INH) for layered fault detection and ASIL-B compliance support. |
Applications
| Power Seat Actuation | HVAC Damper Control |
|---|---|
Use Scenario: Bidirectional linear actuator movement for driver/passenger seat fore-aft, recline, and height adjustment. IC Role / Device Role / Timing Role: Half-bridge driver delivering controlled 28 A continuous current to brushed DC motors; enables soft-start and stall detection via IS feedback. Use Value: Reduces system-level component count by integrating gate drivers, protection, and diagnostics - simplifying ECU design and improving functional safety traceability. | Use Scenario: Precise positioning of HVAC blend and mode doors in vehicle climate control systems. IC Role / Device Role / Timing Role: PWM-controlled H-bridge driver operating at 1–20 kHz; delivers 70 A peak current during door start-up against spring resistance. Use Value: Integrated thermal shutdown and short-circuit protection prevent field failures due to jammed dampers or wiring faults. |
| Steering Column Adjustment | Convertible Top Actuation |
Use Scenario: Motorized telescopic and tilt adjustment of steering columns in premium vehicles. IC Role / Device Role / Timing Role: High-reliability half-bridge with reverse-battery protection (–16 V) and 150 °C junction rating for under-dash mounting near engine heat sources. Use Value: Eliminates need for external TVS and reverse-polarity protection components, lowering total solution cost and board space. | Use Scenario: Synchronized dual-motor control for folding/unfolding convertible roof mechanisms. IC Role / Device Role / Timing Role: Dual independent half-bridge channels (one per motor) with synchronized enable control and shared diagnostics reporting. Use Value: Single-chip dual-drive capability reduces interconnect complexity and improves timing alignment between left/right actuators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics L99H02XPTR | Higher RDS(on) (12 mΩ vs. 8.5 mΩ), no integrated charge pump - requires external bootstrap network. | Lacks 100% duty-cycle support; unsuitable for static hold applications like seat memory positions. | Prefer BTS7740GNUMA1 where sustained high-side conduction or compact layout is required. |
| NXP MC33883AEP | Lower peak current (50 A), no analog current sense - only digital fault flag output. | Missing proportional IS output limits torque estimation and closed-loop control capability. | Choose BTS7740GNUMA1 when real-time current monitoring is needed for ASIL-B diagnostics or adaptive load compensation. |
Compared with L99H02XPTR and MC33883AEP, the BTS7740GNUMA1 uniquely combines 70 A peak current, integrated charge pump, and 0.2% proportional current sense in a single AEC-Q100 Grade 0 package - enabling simpler, safer, and more responsive motor control in space-constrained automotive modules.
Availability
BTS7740GNUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, powertrain auxiliary systems, and industrial motor control requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BTS7740GNUMA1 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 security solutions, with global R&D and manufacturing infrastructure.
The BTS7740GNUMA1 belongs to Infineon's PROFET™+2 family - engineered specifically for high-current, high-reliability automotive motor control applications demanding integrated protection, diagnostics, and AEC-Q100 compliance.
FAQ
What protection features does the BTS7740GNUMA1 provide?
The BTS7740GNUMA1 integrates overcurrent limiting with automatic restart, thermal shutdown with hysteresis, undervoltage lockout (UVLO), reverse battery protection down to –16 V, and open-load detection in both high-side and low-side configurations. All protections trigger the INH flag and disable outputs without external components.
Can the BTS7740GNUMA1 drive inductive loads without external flyback diodes?
Yes - the device includes integrated freewheeling paths (body diodes of internal MOSFETs) and active freewheeling control that safely commutates inductive energy during turn-off. No external flyback diodes are required for standard brushed DC motor loads within its voltage and current ratings.
How is current sensing implemented on the BTS7740GNUMA1?
Current sensing uses an integrated precision current mirror that outputs a proportional analog current (IOUT/2000) on the IS pin. This 0.2% accuracy signal enables direct connection to MCU ADCs for real-time load monitoring, stall detection, and torque estimation without calibration.
Is the BTS7740GNUMA1 pin-compatible with earlier Infineon half-bridge drivers?
No - the BTS7740GNUMA1 uses a 28-pin PG-DSO package with unique pin assignments for IS, INH, and charge pump nodes. It is not pin-compatible with BTS7710G or BTS7741G; PCB layout and schematic must be updated to match the new pinout and decoupling requirements.
BTS7740GNUMA1 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:
- 8A
- Voltage - Supply:
- 1.8V ~ 42V
- Voltage - Load:
- 1.8V ~ 42V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Status Flag
- Fault Protection:
- ESD, Over Temperature, Short Circuit, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-DSO-28-14
BTS7740GNUMA1 FAQ
1.How can I place an order for BTS7740GNUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTS7740GNUMA1 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 BTS7740GNUMA1 reliable?
The price and inventory of BTS7740GNUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTS7740GNUMA1 is usually 5 days.
3.What payment methods are accepted for BTS7740GNUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTS7740GNUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTS7740GNUMA1?
BTS7740GNUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTS7740GNUMA1 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 BTS7740GNUMA1?
For technical support, including BTS7740GNUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTS7740GNUMA1 requirements.
6.How does Aetrix verify that BTS7740GNUMA1 is sourced from the original manufacturer or authorized distributors?
All BTS7740GNUMA1 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 BTS7740GNUMA1 meets industry standards.
7.What is the process for return or replacement of BTS7740GNUMA1?
All BTS7740GNUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTS7740GNUMA1, 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 BTS7740GNUMA1 part is unused and in its original packaging.
Return procedure for BTS7740GNUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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