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Infineon Technologies BTN7970BAUMA1
- Part No.:
- BTN7970BAUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Motor Drivers, Controllers
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
BTN7970BAUMA1.pdf
- Description:
- IC MOTOR DRIVER 8V-18V TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:2,369
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Product details
Overview
BTN7970BAUMA1 from Infineon Technologies is a high-current PN half-bridge NovalithIC™ integrated power stage comprising a p-channel high-side MOSFET (RDS(on) ≤ 12.8 mΩ @ 150 °C), an n-channel low-side MOSFET (RDS(on) ≤ 17.7 mΩ @ 150 °C), and an integrated driver IC in a PG-TO263-7-1 package. It delivers 50 A min. current-limited output, supports 25 kHz PWM with active freewheeling, and features logic-level inputs for direct microcontroller interfacing in automotive motor drive systems.
For engineers reviewing the BTN7970BAUMA1 datasheet, BTN7970BAUMA1 pinout, BTN7970BAUMA1 application, or BTN7970BAUMA1 equivalent, key selection considerations include its charge-pump-free p-channel high-side architecture, integrated overtemperature latch, slew-rate-adjustable switching, status flag with current sense capability, and AEC-Q100 qualification for under-hood motor control.
Technical Context
The BTN7970BAUMA1 implements a monolithic half-bridge topology with physically separate high-side (p-MOS) and low-side (n-MOS) vertical power dies plus a dedicated driver die on a common lead frame. Its dead-time generation and adjustable slew rate (via external SR–GND resistor) are hardware-controlled to prevent shoot-through and optimize EMI.
Protection functions operate autonomously: overvoltage lockout triggers at VS > 45 V, undervoltage shutdown activates below 5.5 V, and overtemperature protection latches at Tj ≥ 150 °C. Current limitation is switched-mode (not linear), with 50 A minimum trip level on the low-side switch and short-circuit detection independent of load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Continuous Output Current | 44 A at TC < 85 °C - defines maximum sustained motor phase current without thermal derating |
| High-Side RDS(on) | ≤ 12.8 mΩ @ 150 °C - enables low conduction loss in high-side path without charge pump |
| Low-Side RDS(on) | ≤ 17.7 mΩ @ 150 °C - minimizes I²R loss during PWM freewheeling and active conduction |
| Current Limit Threshold | 50 A min. / 70 A typ. (low-side) - sets hard current ceiling to protect MOSFETs during stall or short |
| Supply Voltage Range | 5.5 V to 28 V - supports wide automotive battery range including cold-crank and load-dump transients |
| Logic Input Compatibility | 0–5.3 V - accepts standard 3.3 V or 5 V MCU GPIO without level-shifting |
| Thermal Resistance (J–C) | 0.7–1.0 K/W - enables direct heatsink mounting with predictable junction-to-case temperature rise |
Pinout & Package
BTN7970BAUMA1 uses the PG-TO263-7-1 surface-mount package with exposed thermal pad (pin 4/8 shared OUT terminal). The 7-pin configuration supports compact PCB layout with integrated diagnostics and control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power ground reference | Common return path for logic, driver, and power stages; must be low-inductance connection to minimize noise coupling |
| IN (Pin 2) | Bridge control input | Logic-level signal selecting high-side or low-side activation per truth table; no internal pull-up/down |
| INH (Pin 3) | Inhibit enable/disable | Active-low sleep mode control; pulls quiescent current to <1 μA when asserted |
| OUT (Pins 4 & 8) | Half-bridge output node | Shared high-current source/sink terminal connecting to motor winding; electrically tied internally |
| SR (Pin 5) | Slew rate adjustment | External resistor to GND sets dV/dt of both switches-critical for EMI compliance and voltage overshoot control |
| IS (Pin 6) | Current sense & fault flag | Analog current-proportional output + open-drain diagnostic flag indicating overtemp, overcurrent, or UVLO |
| VS (Pin 7) | Main supply input | Primary power rail for both MOSFETs and driver; decoupling capacitor required within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| Charge-pump-free p-channel high-side | Eliminates external capacitor and associated EMI sources while enabling single-supply operation |
| Switched-mode current limitation | Reduces average power dissipation during overload vs. linear limiting-extends safe operating time |
| Status flag with analog current sense | Single pin provides real-time load current monitoring and simultaneous fault reporting (no extra ADC channel needed) |
| Adjustable slew rate via external resistor | Enables tuning of EMI profile and voltage overshoot without changing PCB layout or firmware |
| AEC-Q100 qualified | Validated for automotive temperature, vibration, and lifetime requirements-suitable for engine bay deployment |
Applications
| Automotive Power Window Control | Industrial Brushed DC Motor Drive |
|---|---|
Use Scenario: Bidirectional lifting/lowering of vehicle windows using 12 V brushed DC motor. IC Role / Device Role / Timing Role: Half-bridge power stage executing direction and PWM speed control under MCU command. Use Value: Integrated current sense enables stall detection for anti-pinch safety compliance; latch-type overtemperature shutdown prevents thermal runaway during jamming. | Use Scenario: Precision speed control of conveyor belt motors in factory automation. IC Role / Device Role / Timing Role: High-efficiency H-bridge building block (two BTN7970BAUMA1 per axis) delivering up to 44 A continuous output. Use Value: Low RDS(on) and switched-mode current limit reduce heat sink size and eliminate need for external current-sense amplifiers. |
| Electric Power Steering Assist | Automotive HVAC Blower Control |
Use Scenario: Torque assist motor in column-assist EPS systems requiring fast transient response and fault resilience. IC Role / Device Role / Timing Role: Protected half-bridge driving 24 V motor phase with <1 μs dead-time control and real-time current feedback. Use Value: Slew-rate adjustability meets CISPR-25 Class 5 radiated emissions limits; overvoltage lockout survives 40 V load-dump events. | Use Scenario: Variable-speed cabin air blower in passenger vehicles operating across battery voltage fluctuations. IC Role / Device Role / Timing Role: Single half-bridge controlling fan motor polarity and duty cycle via PWM from HVAC controller. Use Value: Wide 5.5–28 V supply range accommodates cranking (6 V) and alternator ripple (up to 28 V); IS pin enables closed-loop airflow calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current half-bridge motor drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8876PWPR | Lower max current (3.6 A continuous), integrated current sense amplifier, no high-side p-MOS (requires charge pump) | Targeted at low-power consumer robotics, not automotive-grade | Select only for cost-sensitive non-automotive designs where 44 A capability is unnecessary |
| TPS28225D | Driver-only IC (no power MOSFETs), requires external discrete FETs, no integrated protection or current sense | Used in custom high-efficiency inverters where layout and thermal design are fully controlled | Choose when board space allows discrete implementation and full protection must be designed externally |
Compared with DRV8876PWPR and TPS28225D, BTN7970BAUMA1 uniquely integrates rugged AEC-Q100-qualified power MOSFETs, charge-pump-free operation, and self-contained diagnostics-reducing BOM count by ≥6 components and eliminating external current-sense resistors and protection ICs in automotive 12/24 V motor drives.
Availability
BTN7970BAUMA1 is available at Aetrix Electronics and suitable for automotive power window systems, industrial conveyor drives, electric power steering modules, and HVAC blower control requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BTN7970BAUMA1 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 aligned to ISO/TS 16949.
BTN7970BAUMA1 belongs to the NovalithIC™ family-designed specifically for protected, high-current, space-constrained motor drive applications in automotive and industrial environments where integration, reliability, and functional safety are critical.
FAQ
What is the function of the SR pin on BTN7970BAUMA1?
The SR (Slew Rate) pin connects to an external resistor to ground, allowing precise adjustment of the dV/dt for both high-side and low-side MOSFETs. This controls switching edge speed to balance EMI performance against voltage overshoot and shoot-through risk. Typical resistor values range from 10 kΩ (fastest) to 100 kΩ (slowest), with corresponding slew rates specified in the datasheet's dynamic characteristics section.
Does BTN7970BAUMA1 require an external bootstrap capacitor?
No. BTN7970BAUMA1 uses a p-channel high-side MOSFET, eliminating the need for a bootstrap capacitor or charge pump circuit. This simplifies PCB layout, improves reliability under low-duty-cycle or static conditions, and avoids bootstrap-related failure modes such as gate underdrive during extended low-side conduction.
How does the current sense (IS) pin provide both analog output and fault flag functionality?
The IS pin operates in two modes: analog current sensing (0.5 V/A typical scaling) during normal operation, and open-drain fault flag (pulled low) during overtemperature, overcurrent, or undervoltage events. These functions share the same pin but are mutually exclusive-fault condition overrides analog output, ensuring unambiguous error signaling without additional pins or external logic.
Can BTN7970BAUMA1 be used in an H-bridge configuration?
Yes. Two BTN7970BAUMA1 devices can be combined-one for each half-bridge leg-to construct a full H-bridge for bidirectional DC motor control. Interleaved IN/INH control ensures proper dead-time insertion, and synchronized SR resistor selection maintains matched slew rates across all four switches, minimizing cross-conduction and EMI asymmetry.
BTN7970BAUMA1 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
BTN7970BAUMA1 FAQ
1.How can I place an order for BTN7970BAUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTN7970BAUMA1 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 BTN7970BAUMA1 reliable?
The price and inventory of BTN7970BAUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTN7970BAUMA1 is usually 5 days.
3.What payment methods are accepted for BTN7970BAUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTN7970BAUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTN7970BAUMA1?
BTN7970BAUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTN7970BAUMA1 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 BTN7970BAUMA1?
For technical support, including BTN7970BAUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTN7970BAUMA1 requirements.
6.How does Aetrix verify that BTN7970BAUMA1 is sourced from the original manufacturer or authorized distributors?
All BTN7970BAUMA1 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 BTN7970BAUMA1 meets industry standards.
7.What is the process for return or replacement of BTN7970BAUMA1?
All BTN7970BAUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTN7970BAUMA1, 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 BTN7970BAUMA1 part is unused and in its original packaging.
Return procedure for BTN7970BAUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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