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Texas Instruments DRV3256BEPAPRQ1
- Part No.:
- DRV3256BEPAPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
DRV3256BEPAPRQ1.pdf
- Description:
- INTEGRATED 3-PHASE 48-V AUTOMOTI
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
DRV3256BEPAPRQ1 from Texas Instruments is an AEC-Q100 Grade 0 (–40°C to +150°C) automotive 3-phase gate driver unit optimized for 48-V motor drives, delivering 2-A source / 2.5-A sink peak gate drive current, supporting 90-V MOSFET VDS transients, and integrating dual Active Short Circuit (ASC) control for high-side and low-side MOSFETs in belt-integrated starter generators and eTurbo applications.
For engineers reviewing the DRV3256BEPAPRQ1 datasheet, DRV3256BEPAPRQ1 pinout, DRV3256BEPAPRQ1 application, or DRV3256BEPAPRQ1 equivalent, this page delivers verified functional safety targeting (ASIL D), HTQFP-64 package details, SPI with CRC interface, 12-V/48-V split supply architecture, and ASC fault-handling capability - all confirmed for the exact DRV3256B-Q1 variant.
Technical Context
The DRV3256BEPAPRQ1 implements three independent N-channel half-bridge drivers with bootstrap charge pump enabling 100% duty cycle operation and 105-V bootstrap voltage rating. Its 95-V DC-link transient rating and 12-V/48-V dual-supply architecture are engineered specifically for high-power 48-V automotive traction inverters.
It integrates dual Active Short Circuit (ASC) logic supporting simultaneous high-side and low-side MOSFET shorting, pin-controlled ASC activation, and fault handling without external circuitry. Unlike DRV3256A-Q1 (LS-only ASC) or DRV3256-Q1 (3x shunt amps), the DRV3256B-Q1 variant provides zero integrated current shunt amplifiers - a key differentiator confirmed in TI's Device Comparison Table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Gate Drive Current | 2 A source / 2.5 A sink - enables fast switching of high-Qg 48-V MOSFETs while minimizing Miller plateau time |
| DC-Link Voltage Rating | 95-V absolute maximum - supports transient overvoltage events up to 90-V MOSFET VDS in 48-V systems |
| Bootstrap Voltage Rating | 105 V - allows safe operation with 90-V-rated MOSFETs under worst-case boot diode drop and ripple |
| Operating Ambient Temp | –40°C to +150°C (Grade 0) - qualified for under-hood placement in eBoosters and transmission actuators |
| Active Short Circuit Support | High-side AND low-side ASC - enables rapid fault containment by shorting both sides of phase legs during overcurrent |
| Shunt Amplifiers Integrated | 0 - no internal current sense amplifiers; requires external amplification for low-side shunt sensing |
| Logic Input Compatibility | 3.3-V and 5-V tolerant - interoperable with common MCU I/O without level-shifting in mixed-voltage ECUs |
Pinout & Package
DRV3256BEPAPRQ1 uses the HTQFP-64 (PAP) thermally enhanced package with 10.0 mm × 10.0 mm body size, 1.2 mm max height, exposed thermal pad requiring PCB soldering per TI SLMA002/SLMA004 guidelines. Pin 1 orientation follows Q2 quadrant in tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | 12-V logic supply input | Power source for internal regulators, SPI interface, and control logic; requires local 10-µF ceramic decoupling |
| VPWR | 48-V high-side power rail | Supplies high-side driver stages; rated for 95-V transients and must be filtered per TI layout guidelines |
| BOOTx (x=1–3) | Bootstrap capacitor connection | Each connects to dedicated external bootstrap capacitor; supports 105-V rating and 100% PWM duty cycle via integrated charge pump |
| PHASEx (x=1–3) | Half-bridge output node | Drives gate of external high-side and low-side N-MOSFETs; directly connects to motor phase winding |
| nASCIN | Active Short Circuit enable input | Asynchronous active-low signal triggering simultaneous high-side and low-side MOSFET shorting for fault response |
| nFAULT | Fault status open-drain output | Asserted low during VDS, VGS, thermal, or supply faults; pulls low to indicate need for system-level shutdown |
| SCLK, SDI, SDO, nCS | SPI interface signals | Full-duplex serial interface with CRC error detection; supports configuration, diagnostics, and real-time register readback |
Key Features
| Feature | Design Value |
|---|---|
| Functional Safety Targeting | Systematic capability up to ASIL D with ISO 26262 documentation support - reduces validation effort for safety-critical 48-V motor control |
| Dual-Side Active Short Circuit | Hardware-accelerated high-side + low-side MOSFET shorting - eliminates software latency in overcurrent fault response |
| 12-V/48-V Split Supply Architecture | Independent logic (VDD) and power (VPWR) rails - prevents noise coupling from high-current paths into control circuitry |
| Bootstrap Charge Pump | Enables continuous 100% duty cycle operation - removes requirement for external high-voltage bootstrap diodes or complex timing circuits |
| Comprehensive Fault Monitoring | Integrated VDS, VGS, thermal, regulator, clock, and analog BIST - enables single-chip fault coverage without external comparators |
Applications
| Belt-Integrated Starter Generator (BISG) | Electric Turbocharger (eTurbo) |
|---|---|
Use Scenario: High-torque, bidirectional 48-V motor used for engine cranking and regenerative braking in mild hybrid vehicles. IC Role / Device Role / Timing Role: Three-phase gate driver controlling parallel N-MOSFETs in inverter stage; manages ASC during sudden load dump or short-circuit events. Use Value: Dual-side ASC enables sub-2-µs fault containment, preventing MOSFET destruction during crank-to-run transition surges. |
Use Scenario: Compact turbocharger with integrated 48-V motor driving compressor wheel at >100,000 RPM in exhaust gas path. IC Role / Device Role / Timing Role: High-efficiency gate driver managing high-frequency PWM (≥20 kHz) with precise dead-time control and thermal derating. Use Value: 150°C ambient rating and exposed thermal pad allow direct mounting near hot exhaust manifold without heatsink. |
| Electric Power Steering (EPS) | Transmission Actuation System |
Use Scenario: 48-V assist motor providing torque overlay on steering column or rack in steer-by-wire architectures. IC Role / Device Role / Timing Role: Precision gate driver delivering low-noise, low-jitter PWM to minimize audible motor whine and torque ripple. Use Value: 2.5-A sink current ensures rapid low-side turn-off, reducing shoot-through risk during high-dV/dt commutation. |
Use Scenario: Electromechanical actuator controlling clutch engagement/disengagement and gear shifting in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: Robust gate driver operating in high-vibration, oil-immersed environments with frequent start-stop cycles. Use Value: AEC-Q100 Grade 0 qualification and HBM ESD Level 2 ensure reliability despite exposure to transmission fluid and mechanical shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV3256EPAPRQ1 | Includes 3 integrated current shunt amplifiers; same ASC and gate drive specs | Supports resistor-based phase current sensing without external op-amps; higher BOM cost | Select when closed-loop current control is required and board space for external amplifiers is constrained |
| DRV3256AEPAPRQ1 | Provides only low-side ASC; includes 1 shunt amplifier; identical package and pinout | Limited fault response scope - cannot short high-side MOSFETs; suitable for lower-risk EPS or HVAC fans | Select when system-level fault strategy relies solely on low-side shorting and cost sensitivity outweighs ASC flexibility |
Compared with DRV3256EPAPRQ1 (3x shunt amps) and DRV3256AEPAPRQ1 (LS-only ASC), the DRV3256BEPAPRQ1 offers maximal ASC flexibility (HS+LS) with zero integrated amplifiers - ideal for designs using external isolated current sensors or Hall-effect feedback.
Availability
DRV3256BEPAPRQ1 is available at Aetrix Electronics and suitable for automotive 48-V motor drive systems requiring stable component supply, including belt-integrated starter generators, electric turbochargers, and transmission actuation modules.
Supply support for DRV3256BEPAPRQ1 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in automotive-grade power management and motor control ICs.
The DRV3256-Q1 family was developed to address high-power 48-V electrification needs in next-generation mild hybrids, focusing on integration, functional safety, and thermal robustness for under-hood motor drives.
FAQ
What is the primary function of the DRV3256BEPAPRQ1 in a 48-V motor drive system?
The DRV3256BEPAPRQ1 serves as a fully integrated three-phase gate driver unit that controls external N-channel MOSFETs in high-power 48-V inverters. It delivers 2-A source / 2.5-A sink gate drive current, implements hardware-based high-side and low-side Active Short Circuit (ASC) for fault containment, and operates across –40°C to +150°C ambient conditions - making it essential for BISG, eTurbo, and EPS applications where reliability and fast fault response are critical. The DRV3256BEPAPRQ1 contains no integrated current shunt amplifiers, distinguishing it from other variants in the family.
Does the DRV3256BEPAPRQ1 support 100% duty cycle operation, and how is this achieved?
Yes, the DRV3256BEPAPRQ1 supports 100% PWM duty cycle operation through its integrated bootstrap charge pump circuitry. This eliminates reliance on external high-voltage bootstrap diodes and enables continuous conduction mode in high-side drivers - critical for applications like transmission actuators requiring sustained torque output. The charge pump maintains sufficient gate voltage for high-side MOSFETs even during extended on-times, and the bootstrap voltage rating of 105 V ensures compatibility with 90-V MOSFETs under worst-case ripple and dropout conditions. This functionality is inherent to the DRV3256BEPAPRQ1 silicon design.
How does the Active Short Circuit (ASC) implementation differ between DRV3256BEPAPRQ1 and DRV3256AEPAPRQ1?
The DRV3256BEPAPRQ1 supports both high-side and low-side Active Short Circuit (ASC), whereas the DRV3256AEPAPRQ1 supports low-side ASC only. This difference is explicitly documented in TI's Device Comparison Table and impacts fault response strategy: DRV3256BEPAPRQ1 can short all six MOSFETs simultaneously to clamp phase voltage during overcurrent, while DRV3256AEPAPRQ1 limits shorting to low-side devices only. Both use the same nASCIN pin for activation, but the internal logic routing and driver enable paths are variant-specific. The DRV3256BEPAPRQ1's dual-side ASC is confirmed for use in high-risk applications such as eTurbo and BISG where rapid energy dissipation is mandatory.
What package type and thermal requirements apply to the DRV3256BEPAPRQ1?
The DRV3256BEPAPRQ1 uses the HTQFP-64 (PAP) package with 10.0 mm × 10.0 mm body size and 1.2 mm maximum height, featuring an exposed thermal pad that must be soldered to a dedicated PCB copper pour for thermal and mechanical integrity. Per TI SLMA002/SLMA004 guidelines, the thermal pad requires ≥90% solder coverage and connection to internal ground planes via multiple thermal vias. The device's Grade 0 temperature range (–40°C to +150°C) demands careful attention to PCB copper area, airflow, and nearby heat sources - especially in compact eTurbo or EPS modules where ambient temperatures exceed 125°C. This package is shared across all DRV3256-Q1 variants, including DRV3256BEPAPRQ1.
Is the DRV3256BEPAPRQ1 pin-compatible with other members of the DRV3256-Q1 family?
Yes, the DRV3256BEPAPRQ1 is pin-compatible with DRV3256AEPAPRQ1, DRV3256EPAPRQ1, and DRV3256PEPAPRQ1 - all use the identical HTQFP-64 (PAP) package with matching pin assignments, footprint, and thermal pad layout. However, functional differences exist: DRV3256BEPAPRQ1 has no integrated shunt amplifiers and supports HS+LS ASC, while DRV3256AEPAPRQ1 includes one shunt amp and LS-only ASC, and DRV3256EPAPRQ1 includes three shunt amps. These differences require corresponding firmware and external circuit adjustments, but PCB layout reuse is fully supported. This pin-compatibility is confirmed in TI's official packaging and orderable addendum documents for DRV3256BEPAPRQ1.
DRV3256BEPAPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Controller - Current Management
- Output Configuration:
- Half Bridge (3)
- Interface:
- PWM, SPI
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 2.5A
- Voltage - Supply:
- 5V ~ 95V
- Voltage - Load:
- 20V ~ 90V
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
DRV3256BEPAPRQ1 FAQ
1.How can I place an order for DRV3256BEPAPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV3256BEPAPRQ1 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 DRV3256BEPAPRQ1 reliable?
The price and inventory of DRV3256BEPAPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV3256BEPAPRQ1 is usually 5 days.
3.What payment methods are accepted for DRV3256BEPAPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV3256BEPAPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV3256BEPAPRQ1?
DRV3256BEPAPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV3256BEPAPRQ1 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 DRV3256BEPAPRQ1?
For technical support, including DRV3256BEPAPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV3256BEPAPRQ1 requirements.
6.How does Aetrix verify that DRV3256BEPAPRQ1 is sourced from the original manufacturer or authorized distributors?
All DRV3256BEPAPRQ1 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 DRV3256BEPAPRQ1 meets industry standards.
7.What is the process for return or replacement of DRV3256BEPAPRQ1?
All DRV3256BEPAPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DRV3256BEPAPRQ1, 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 DRV3256BEPAPRQ1 part is unused and in its original packaging.
Return procedure for DRV3256BEPAPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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