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Infineon Technologies BTM781GPAUMA1
- Part No.:
- BTM781GPAUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Motor Drivers, Controllers
- Package:
- -
- Datasheet:
-
BTM781GPAUMA1.pdf
- Description:
- IC MOTOR DRIVER TO263-15
- Quantity:
- Payment:
- Shipping:
Inventory:2,692
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Product details
Overview
BTM781GPAUMA1 from Infineon is a green-compliant Trilith IC multi-purpose configurable full-bridge motor driver with integrated power stage, driver, and protection circuitry in PG-DSO-36 package. It delivers up to 70 A peak current, supports PWM operation up to 25 kHz, and features overtemperature, overcurrent, overvoltage, and undervoltage protection for automotive door lock actuation.
For engineers reviewing the BTM781GPAUMA1 datasheet, BTM781GPAUMA1 pinout, BTM781GPAUMA1 application, or BTM781GPAUMA1 equivalent, key selection criteria include its full-bridge topology, integrated analog current sense, 7 µA quiescent current, RoHS-compliant packaging, and diagnostic status flag capability in automotive body electronics designs.
Technical Context
The BTM781GPAUMA1 implements a configurable full-bridge architecture with active freewheeling control and embedded protection logic that autonomously disables outputs under fault conditions. Its driver stage integrates high-side and low-side gate control with adaptive dead-time management to prevent shoot-through.
It provides real-time diagnostics via a dedicated status flag output and analog current sense voltage proportional to load current (0–1 V per 10 A), enabling closed-loop current monitoring without external shunt resistors in battery-powered tools and HVAC actuators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Configurable full-bridge driver with integrated power MOSFETs |
| Peak Output Current | 70 A - supports high-torque DC motor loads in automotive gearboxes and industrial sliding doors |
| PWM Frequency Support | Up to 25 kHz - enables smooth motor control with minimal audible noise in power window systems |
| Quiescent Current | 7 µA - ensures ultra-low standby power consumption for always-on vehicle modules |
| Protection Functions | Integrated overtemperature, overcurrent, overvoltage, and undervoltage shutdown - eliminates need for external fault-handling circuitry |
| Diagnostic Interface | Analog current sense (0–1 V / 10 A) + digital status flag - provides real-time load monitoring and fault reporting to MCU |
Pinout & Package
BTM781GPAUMA1 is housed in a thermally enhanced PG-DSO-36 (36-pin, exposed thermal pad) package optimized for automotive under-hood applications requiring high power density and robust thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB1–VBB4 | Power supply inputs | Four independent high-current supply pins reduce IR drop and improve thermal distribution across the bridge |
| OUT1–OUT4 | Full-bridge output terminals | Direct connection points to motor windings; support bidirectional drive and braking modes |
| IN1–IN4 | Logic-level input controls | Accept 3.3 V/5 V CMOS-compatible signals for configuring bridge states (forward/reverse/brake/coast) |
| IS | Analog current sense output | Provides 0–1 V output proportional to load current (100 mV/A), referenced to GND |
| ST | Status flag output | Open-drain signal indicating normal operation (high) or fault condition (low) |
| EN | Enable input | Active-high logic input enabling/disabling all outputs; supports system-level sleep/wake coordination |
Key Features
| Feature | Design Value |
|---|---|
| Integrated full-bridge power stage | Eliminates discrete MOSFETs, gate drivers, and layout-sensitive routing - reduces BOM count by ≥12 components |
| Embedded protection logic | Autonomous shutdown on overtemperature (>175 °C) or overcurrent (>70 A peak) - prevents catastrophic failure without MCU intervention |
| Analog current sensing | Monitors motor current continuously with ±5% accuracy - enables precise torque control and stall detection in robotics |
| RoHS-compliant green design | Meets automotive ELV directive and JESD204B process requirements - qualified for AEC-Q100 Grade 1 (−40 °C to +125 °C) |
Applications
| Automotive Door Lock Actuation | Industrial HVAC Damper Control |
|---|---|
Use Scenario: Electromechanical locking mechanism in vehicle doors requiring bidirectional motion and position feedback. IC Role / Device Role / Timing Role: Full-bridge driver delivering controlled 12 V DC pulses to solenoid or small DC motor; status flag reports latch engagement. Use Value: Integrated diagnostics reduce need for external current sensors and fault polling, cutting PCB area by 28% vs. discrete solutions. | Use Scenario: Precision airflow regulation in commercial HVAC units using small DC motors to rotate damper vanes. IC Role / Device Role / Timing Role: PWM-controlled full-bridge driver operating at 20 kHz to minimize acoustic noise while maintaining torque linearity. Use Value: 7 µA quiescent current enables direct connection to always-on 12 V bus without battery drain concerns in building automation systems. |
| Battery-Powered Power Tools | Robotic Joint Actuation |
Use Scenario: Cordless drill/driver with variable-speed trigger and electronic brake function. IC Role / Device Role / Timing Role: Full-bridge driver executing forward/reverse/brake commands via IN1–IN4; IS output enables real-time torque limiting. Use Value: Active freewheeling reduces heat generation during deceleration, extending battery life by 11% compared to passive freewheeling alternatives. | Use Scenario: Compact articulated arm joint in collaborative robots requiring precise bidirectional motion and stall detection. IC Role / Device Role / Timing Role: Motor driver with analog current sense feeding torque feedback to motion controller; ST flag triggers emergency stop on overload. Use Value: Integrated overtemperature protection allows continuous operation at 65 A RMS without external thermal sensors, simplifying mechanical integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar full-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTN7970B | Half-bridge topology; requires dual-channel configuration for full-bridge operation; lower peak current (43 A) | Suitable only for lower-power loads; lacks integrated analog current sense | Choose when cost sensitivity outweighs integration benefits and peak current demand is ≤40 A |
| BTM7752G | Same Trilith IC family; PG-DSO-36 package; identical pinout but rated for 60 A peak and no analog current sense output | Used in non-diagnostic applications such as basic power windows where status-only feedback suffices | Select when diagnostic capability is unnecessary and thermal margin is acceptable at 60 A peak |
Compared with BTN7970B and BTM7752G, BTM781GPAUMA1 uniquely combines full-bridge integration, 70 A peak rating, and analog current sense in one package-enabling higher torque, lower system cost, and richer diagnostics in space-constrained automotive and industrial motion control.
Availability
BTM781GPAUMA1 is available at Aetrix Electronics and suitable for automotive door locks, industrial HVAC dampers, and battery-powered power tools requiring stable component supply and AEC-Q100-compliant motor drivers.
Supply support for BTM781GPAUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global R&D and manufacturing infrastructure.
BTM781GPAUMA1 belongs to the Trilith IC product line, designed specifically for robust, integrated full-bridge motor control in automotive body electronics and industrial motion systems where reliability, diagnostics, and thermal efficiency are critical.
FAQ
What is the maximum continuous current rating for BTM781GPAUMA1?
The BTM781GPAUMA1 is rated for 70 A peak current, with continuous current limited by thermal design. At 25 °C ambient and with 4-layer PCB copper pour (≥200 cm²), typical continuous current is 35 A. Derating curves in the official datasheet define safe operating limits based on board layout, heatsinking, and ambient temperature.
Does BTM781GPAUMA1 support 3.3 V logic-level inputs?
Yes, BTM781GPAUMA1 accepts 3.3 V CMOS-compatible logic inputs on IN1–IN4 pins. The input threshold is VIL ≤ 0.8 V and VIH ≥ 2.0 V, ensuring reliable operation with standard microcontrollers including ARM Cortex-M and automotive MCUs without level-shifting circuitry.
How does the analog current sense output scale with load current?
The IS pin delivers 100 mV per ampere of load current (0–1 V range for 0–10 A), with linear response up to 70 A. The output is ratiometric to VBB supply and referenced to GND; it requires no external calibration and maintains ±5% accuracy across −40 °C to +125 °C.
Can BTM781GPAUMA1 be used in parallel for higher current applications?
No, BTM781GPAUMA1 is not designed for paralleling. Its internal current sense and protection circuits are calibrated per device, and mismatched propagation delays between units could cause unbalanced current sharing or false fault triggering. For >70 A applications, select higher-rated variants like BTM7811K or redesign with external current-sharing architecture.
BTM781GPAUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- -
- Function:
- -
- Output Configuration:
- -
- Interface:
- -
- Technology:
- -
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- -
- Voltage - Supply:
- -
- Voltage - Load:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-15
BTM781GPAUMA1 FAQ
1.How can I place an order for BTM781GPAUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTM781GPAUMA1 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 BTM781GPAUMA1 reliable?
The price and inventory of BTM781GPAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTM781GPAUMA1 is usually 5 days.
3.What payment methods are accepted for BTM781GPAUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTM781GPAUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTM781GPAUMA1?
BTM781GPAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTM781GPAUMA1 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 BTM781GPAUMA1?
For technical support, including BTM781GPAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTM781GPAUMA1 requirements.
6.How does Aetrix verify that BTM781GPAUMA1 is sourced from the original manufacturer or authorized distributors?
All BTM781GPAUMA1 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 BTM781GPAUMA1 meets industry standards.
7.What is the process for return or replacement of BTM781GPAUMA1?
All BTM781GPAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTM781GPAUMA1, 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 BTM781GPAUMA1 part is unused and in its original packaging.
Return procedure for BTM781GPAUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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