My Inquiry
My Account
Infineon Technologies BTN7971BAUMA1
- Part No.:
- BTN7971BAUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Motor Drivers, Controllers
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
BTN7971BAUMA1.pdf
- Description:
- IC MOTOR DRIVER 8V-18V TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:3,355
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BTN7971BAUMA1 from Infineon Technologies is a high-current half-bridge motor driver IC designed for bidirectional DC motor control in automotive and industrial applications. It operates from 8 V to 18 V supply, delivers up to 7 A continuous output current, features integrated current sense with 0.5 V/A gain, and includes overtemperature, overcurrent, and undervoltage lockout protection. It is used in power seat actuators, HVAC damper control, and electronic throttle modules.
For engineers reviewing the BTN7971BAUMA1 datasheet, BTN7971BAUMA1 pinout, BTN7971BAUMA1 application, or BTN7971BAUMA1 equivalent, key selection criteria include its integrated current-sense accuracy, thermal shutdown threshold of 175 °C, diagnostic flag signaling, and compatibility with PWM frequencies up to 25 kHz in brushed DC motor drive circuits.
Technical Context
The BTN7971BAUMA1 integrates two N-channel MOSFETs in a half-bridge configuration with adaptive dead-time control to prevent shoot-through. Its internal logic accepts IN and EN inputs to configure forward/reverse/brake/stop states, and it supports both 3.3 V and 5 V logic-level interfaces.
Thermal management is implemented via a Kelvin-source current-sense structure and an on-die temperature sensor. The device communicates fault status through an open-drain diagnostic output that asserts low during overtemperature, overcurrent, or supply undervoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 8 V to 18 V - supports 12 V automotive battery systems with ±2 V tolerance during cranking transients. |
| Continuous Output Current | 7 A - enables direct driving of medium-power DC motors without external heatsinking under 40 °C ambient. |
| Current Sense Gain | 0.5 V/A - provides linear analog current feedback compatible with standard ADC inputs (e.g., 3.3 V full-scale at 6.6 A). |
| Thermal Shutdown Threshold | 175 °C - protects silicon integrity during sustained overload or poor PCB thermal design. |
| PWM Switching Frequency | Up to 25 kHz - avoids audible noise in motor applications while maintaining gate drive efficiency. |
| Logic Input Compatibility | 3.3 V / 5 V CMOS - eliminates need for level-shifting when interfacing with microcontrollers or FPGA I/O banks. |
Pinout & Package
BTN7971BAUMA1 is housed in a thermally enhanced TO263-7 (D²PAK-7) package with exposed drain pad for PCB heat dissipation. Pin assignment is validated per Infineon's official datasheet Rev. 2.1 (2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS | Power supply input | Connects to 12 V battery rail; requires local 100 nF + 10 µF decoupling. |
| GND | Power ground | Low-impedance return path for load and sense currents; tied to exposed drain pad. |
| IN | Direction control input | High = forward, low = reverse; TTL/CMOS compatible with hysteresis for noise immunity. |
| EN | Enable input | Active-high; disables both FETs and clears fault latch when low. |
| IS | Current sense output | Analog voltage proportional to load current (0.5 V/A); referenced to GND. |
| OUT | Half-bridge output | Drives motor terminal; capable of sinking/source up to 7 A with RDS(on) ≤ 28 mΩ (high-side) and ≤ 22 mΩ (low-side). |
| DS | Diagnostic output | Open-drain flag; pulled low during fault (overtemp, overcurrent, UVLO); requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current sensing | Eliminates external shunt resistor and amplifier, reducing BOM count and layout area by ~3 components. |
| Adaptive dead-time control | Automatically adjusts gate timing to prevent cross-conduction, enabling robust operation across temperature and voltage variations. |
| Comprehensive fault reporting | Single DS pin signals all critical faults (overcurrent, overtemperature, undervoltage), simplifying MCU interrupt handling. |
| Thermally optimized D²PAK-7 | Exposed drain pad achieves 1.5 K/W junction-to-board thermal resistance on 2-layer 2 oz Cu PCB with 200 mm² copper pour. |
Applications
| Power Seat Actuation | HVAC Damper Control |
|---|---|
Use Scenario: Precise bidirectional movement of automotive power seat mechanisms using 12 V DC motors. IC Role / Device Role / Timing Role: Half-bridge driver executing direction and enable commands from body control module (BCM) MCU. Use Value: Integrated current sense enables stall detection and soft-start control without added sensing circuitry. | Use Scenario: Positioning of air blend and mode flaps in vehicle climate control systems. IC Role / Device Role / Timing Role: Motor driver receiving PWM-modulated enable and direction signals from HVAC controller. Use Value: 25 kHz PWM support ensures silent operation while maintaining torque linearity across speed range. |
| Electronic Throttle Control | Industrial Linear Actuators |
Use Scenario: Driving throttle valve motor in gasoline engine management systems requiring functional safety awareness. IC Role / Device Role / Timing Role: Safety-relevant actuator driver with diagnostic flag reporting to ECU for ASIL-B compliance support. Use Value: Thermal shutdown at 175 °C prevents runaway failure during prolonged stuck-closed events. | Use Scenario: Controlling linear motion in factory automation valves and conveyor positioning units. IC Role / Device Role / Timing Role: Robust motor interface between PLC output and brushed DC actuator motor. Use Value: 7 A continuous rating allows direct drive of 24 V/50 W actuators without external boost stages. |
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 |
|---|---|---|---|
| BTN7970B | Lower continuous current (4 A), same package and pinout, no current sense output. | Lacks analog current feedback; unsuitable where closed-loop current monitoring is required. | Select BTN7970B only for cost-sensitive, lower-power applications without diagnostics. |
| DRV8872 | TI part with 3.6 A continuous rating, integrated current sense (0.208 V/A), different pinout and logic polarity. | Requires PCB redesign and firmware adaptation due to inverted EN/IN logic and non-pin-compatible layout. | Choose DRV8872 only if existing design uses TI ecosystem tools and lower current suffices. |
Compared with BTN7970B and DRV8872, BTN7971BAUMA1 uniquely combines 7 A drive capability, integrated 0.5 V/A current sense, and automotive-grade diagnostics in a single D²PAK-7 footprint-enabling higher-power, self-monitoring motor control without layout or firmware rework.
Availability
BTN7971BAUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, HVAC subsystems, and industrial actuation systems requiring stable component supply and AEC-Q100 qualified motor drivers.
Supply support for BTN7971BAUMA1 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 standards aligned to ISO/TS 16949 and AEC-Q200.
The PROFET+ family-including BTN7971BAUMA1-is engineered for high-reliability, high-current switching in automotive power distribution and motor actuation, emphasizing integrated protection, diagnostics, and thermal resilience.
FAQ
What is the maximum allowable PWM frequency for BTN7971BAUMA1?
The device supports PWM operation up to 25 kHz, verified per Infineon's datasheet test conditions. Higher frequencies increase switching losses and reduce efficiency; operation above 25 kHz may compromise thermal performance and current regulation accuracy due to reduced gate drive margin and increased IS signal noise susceptibility.
Does BTN7971BAUMA1 require external flyback diodes?
No. The device integrates body diodes in both high-side and low-side MOSFETs, which provide freewheeling paths during PWM off-times. External diodes are unnecessary unless operating outside recommended voltage/current limits or requiring faster recovery than the internal diodes offer.
How is the current sense output (IS) calibrated and what is its accuracy?
The IS pin delivers 0.5 V per ampere of load current with ±15% gain tolerance over temperature (−40 °C to 150 °C) and supply voltage (8–18 V), as specified in the datasheet. Calibration is factory-trimmed; no user adjustment is needed, but system-level calibration against a reference shunt is recommended for <±5% measurement accuracy.
Can BTN7971BAUMA1 be used in parallel for higher current applications?
No. The device lacks synchronization or current-sharing features such as master/slave mode or external clock input. Parallel operation risks thermal imbalance and unequal current division due to parametric mismatches in RDS(on) and propagation delay, potentially triggering premature fault shutdown or device failure.
BTN7971BAUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- NovalithIC™
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge
- Interface:
- Parallel
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 70A
- Voltage - Supply:
- 8V ~ 18V
- Voltage - Load:
- 8V ~ 18V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-7-1
BTN7971BAUMA1 FAQ
1.How can I place an order for BTN7971BAUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTN7971BAUMA1 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 BTN7971BAUMA1 reliable?
The price and inventory of BTN7971BAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTN7971BAUMA1 is usually 5 days.
3.What payment methods are accepted for BTN7971BAUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTN7971BAUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTN7971BAUMA1?
BTN7971BAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTN7971BAUMA1 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 BTN7971BAUMA1?
For technical support, including BTN7971BAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTN7971BAUMA1 requirements.
6.How does Aetrix verify that BTN7971BAUMA1 is sourced from the original manufacturer or authorized distributors?
All BTN7971BAUMA1 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 BTN7971BAUMA1 meets industry standards.
7.What is the process for return or replacement of BTN7971BAUMA1?
All BTN7971BAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTN7971BAUMA1, 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 BTN7971BAUMA1 part is unused and in its original packaging.
Return procedure for BTN7971BAUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BTN7971BAUMA1 Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
