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Texas Instruments DRV3256AEPAPRQ1
- Part No.:
- DRV3256AEPAPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 64-TQFP Exposed Pad
- Datasheet:
-
DRV3256AEPAPRQ1.pdf
- Description:
- INTEGRATED 3-PHASE 48-V AUTOMOTI
- Quantity:
- Payment:
- Shipping:
Inventory:838
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Product details
Overview
DRV3256AEPAPRQ1 from Texas Instruments is an AEC-Q100 Grade 0 (–40°C to +150°C) automotive 3-phase gate driver unit for 48-V motor drives, integrating three N-channel half-bridge drivers with 2-A/2.5-A peak gate current, 95-V DC-link transient rating, and single low-side current shunt amplifier. It supports 100% duty cycle via integrated charge-pump bootstrap and enables Active Short Circuit (ASC) on low-side only.
For engineers reviewing the DRV3256AEPAPRQ1 datasheet, DRV3256AEPAPRQ1 pinout, DRV3256AEPAPRQ1 application, or DRV3256AEPAPRQ1 equivalent, key selection criteria include ASC configuration scope (LS-only), integrated current sensing count (1×), functional safety targeting (ASIL D), 12-V/48-V split supply architecture, and HTQFP-64 thermal pad package compatibility with PowerPAD™ layout requirements.
Technical Context
The DRV3256AEPAPRQ1 implements a split-rail power architecture with independent 12-V logic and 48-V high-side gate drive supplies, enabling efficient MOSFET switching in high-power 48-V traction systems. Its bootstrap circuit includes an internal charge pump to sustain 100% PWM duty cycle without external diodes or capacitors.
It integrates one configurable low-side current shunt amplifier and a pin-controlled Active Short Circuit (ASC) function limited to low-side MOSFETs - distinguishing it from DRV3256-Q1 (3× amplifiers, HS+LS ASC) and DRV3256B-Q1 (no amplifiers, HS+LS ASC). Fault reporting uses dedicated nFAULT and ASCIN pins with SPI-CRC diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gate Drive Current | 2-A source / 2.5-A sink peak: sufficient to drive parallel MOSFETs in high-current 48-V motor phases. |
| DC-Link Voltage Rating | 95-V absolute maximum: supports transient overvoltage events up to 90-V MOSFET VDS operation. |
| Bootstrap Voltage | 105-V max: enables reliable gate turn-on for 90-V-rated MOSFETs under full load conditions. |
| Operating Temp Range | –40°C to +150°C ambient: qualified per AEC-Q100 Grade 0 for under-hood automotive placement. |
| Shunt Amplifiers | 1× integrated low-side current sense amplifier: reduces BOM count for single-shunt motor current measurement. |
| ASC Configuration | Low-side only: allows fast fault response by shorting phase to ground, but excludes high-side ASC capability. |
| Logic Interface | 3.3-V and 5-V compatible inputs: simplifies interface with diverse MCU I/O voltage domains. |
Pinout & Package
DRV3256AEPAPRQ1 uses the HTQFP-64 (PAP) package with 10.0 mm × 10.0 mm body and exposed thermal pad (PowerPAD™), requiring soldering to PCB for thermal management per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| nSLEEP | Global enable control | Active-low input that disables all gate drivers and enters ultra-low-power state when asserted. |
| nFAULT | Fault status output | Open-drain indicator signaling overtemperature, overcurrent, UVLO, or VGS fault conditions. |
| nASCIN | Active Short Circuit trigger | Active-low input initiating low-side ASC mode; requires external pull-up for default inactive state. |
| DRVOFF | Driver disable override | Asynchronous shutdown of all high- and low-side outputs regardless of PWM or SPI state. |
| SPI SCLK/MOSI/MISO/CSn | Digital configuration interface | 4-wire SPI with CRC enables real-time register read/write for protection thresholds and ASC settings. |
| VDD, PVDD, AVDD, DVDD | Supply rails | Dedicated 12-V logic (DVDD), 48-V power (PVDD), analog (AVDD), and internal regulator (VDD) supplies ensure noise isolation. |
| PHxH/PHxL (x=U/V/W) | Half-bridge gate outputs | Three pairs of high-side (PHxH) and low-side (PHxL) drivers with independent bootstrap connections. |
| ISENx (x=U/V/W) | Current sense inputs | Single-ended inputs for low-side shunt resistor; only one channel active in DRV3256A-Q1 variant. |
Key Features
| Feature | Design Value |
|---|---|
| Charge-pump bootstrap | Enables 100% duty cycle operation without external components, eliminating dead-time limitations in field-oriented control. |
| Low-side ASC support | Hardware-triggered short-circuit path reduces system fault response time to <1 µs, critical for eTurbo and EPS torque safety. |
| AEC-Q100 Grade 0 qualification | Validated for continuous operation at +150°C ambient, supporting placement near 48-V inverters in engine compartments. |
| SPI with CRC | Ensures integrity of configuration writes and fault register reads in electrically noisy automotive environments. |
| Integrated VDS and VGS monitors | Provides real-time MOSFET health feedback without external comparators, reducing diagnostic BOM and board area. |
Applications
| Belt-Integrated Starter Generator (B-ISG) | Electric Power Steering (EPS) |
|---|---|
Use Scenario: High-torque, bidirectional 48-V motor assist during engine start-stop cycles and regenerative braking. IC Role / Device Role / Timing Role: Three-phase gate driver controlling parallel SiC MOSFETs in inverter stage; provides ASC for rapid torque removal during collision detection. Use Value: Single low-side shunt amplifier enables cost-effective current sensing while LS-only ASC meets ISO 26262 ASIL C torque cut requirements. | Use Scenario: Compact, high-bandwidth steering assist using 48-V BLDC motor with precise torque control. IC Role / Device Role / Timing Role: Gate driver delivering 2.5-A sink current to rapidly discharge MOSFET gates during dynamic torque reversal. Use Value: 95-V DC-link rating withstands load-dump transients; 12-V/48-V split supply isolates MCU logic from motor power noise. |
| eTurbo / eBooster | HVAC Compressor |
Use Scenario: Turbocharger actuation with fast transient response and thermal resilience in exhaust manifold proximity. IC Role / Device Role / Timing Role: High-efficiency gate driver managing 48-V inverter switching at >20 kHz; thermal warning pin triggers derating before junction exceeds 175°C. Use Value: –40°C to +150°C ambient rating enables direct mounting on turbo housing; charge-pump bootstrap sustains boost pressure control at 100% duty cycle. | Use Scenario: Variable-speed HVAC compressor in battery electric vehicles requiring quiet, efficient cabin climate control. IC Role / Device Role / Timing Role: Motor phase driver with integrated Rshunt overcurrent monitoring and analog built-in self-test for functional safety compliance. Use Value: SPI-configurable fault thresholds allow tuning for different compressor inertia profiles; ASC prevents rotor lock damage during refrigerant flood events. |
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 | 3× low-side shunt amplifiers; HS+LS ASC support; same pinout and package. | Supports dual-shunt or three-shunt current sensing topologies and high-side ASC for enhanced fault containment. | Select when multi-shunt sensing or high-side ASC is required for ASIL D system decomposition. |
| DRV3256BEPAPRQ1 | No integrated shunt amplifiers; HS+LS ASC; identical gate drive specs and package. | Requires external current sensing; suited for space-constrained designs where ASC flexibility outweighs BOM reduction. | Choose when external sensing ICs are already deployed and ASC on both sides is mandatory for fault tolerance. |
Compared with DRV3256AEPAPRQ1, DRV3256EPAPRQ1 adds two more shunt amps and high-side ASC at no layout change, while DRV3256BEPAPRQ1 removes all amps but retains full ASC capability - making DRV3256AEPAPRQ1 optimal for cost-sensitive, single-shunt 48-V B-ISG or EPS systems needing LS-only safety action.
Availability
DRV3256AEPAPRQ1 is available at Aetrix Electronics and suitable for automotive 48-V motor drive systems requiring stable component supply, including belt-integrated starter generators, electric power steering modules, and HVAC compressors.
Supply support for DRV3256AEPAPRQ1 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, embedded processing, and automotive ICs, with decades of leadership in high-reliability power management solutions.
The DRV3256-Q1 product line targets functional-safety-compliant 48-V automotive traction inverters, designed specifically for high-power motor drives in mild hybrid electric vehicles (MHEVs) and electrified chassis subsystems.
FAQ
What is the maximum DC-link voltage the DRV3256AEPAPRQ1 can handle?
The DRV3256AEPAPRQ1 has a 95-V absolute maximum rating on its DHCP (DC-link high-side power) pin, allowing safe operation with 48-V nominal systems experiencing up to 90-V MOSFET VDS transients. This rating is validated per AEC-Q100 stress testing and supports robust design against load dump and inductive kickback events in automotive environments. The DRV3256AEPAPRQ1 must be used with appropriate external clamping if system transients exceed this limit.
Does the DRV3256AEPAPRQ1 support 100% PWM duty cycle operation?
Yes, the DRV3256AEPAPRQ1 supports 100% PWM duty cycle via its integrated charge-pump bootstrap architecture, which maintains high-side gate voltage without external diodes or capacitors. This capability is essential for field-oriented control algorithms requiring continuous conduction mode in 48-V motor drives. The DRV3256AEPAPRQ1 achieves this while maintaining thermal efficiency and minimizing self-heating during sustained high-side activation.
How many current shunt amplifiers does the DRV3256AEPAPRQ1 integrate?
The DRV3256AEPAPRQ1 integrates exactly one low-side current shunt amplifier, as confirmed in the Device Comparison Table and functional description. This distinguishes it from the DRV3256-Q1 (3×) and DRV3256B-Q1 (0×) variants. The single amplifier supports resistor-based low-side current sensing for motor phase U, V, or W - selected via configuration registers - enabling cost-optimized single-shunt implementations in B-ISG and EPS applications.
What Active Short Circuit (ASC) capability does the DRV3256AEPAPRQ1 provide?
The DRV3256AEPAPRQ1 supports low-side-only Active Short Circuit (ASC), activated via the nASCIN pin. It does not support high-side ASC, unlike DRV3256-Q1 or DRV3256B-Q1. This LS-only ASC enables rapid fault containment by shorting motor phases to ground, meeting ASIL C requirements for torque-cut functions in EPS and B-ISG. The DRV3256AEPAPRQ1's ASC implementation is hardware-triggered with sub-microsecond response and requires no SPI intervention.
Is the DRV3256AEPAPRQ1 pin-compatible with other variants in the DRV3256-Q1 family?
Yes, the DRV3256AEPAPRQ1 is pin-compatible with DRV3256EPAPRQ1, DRV3256BEPAPRQ1, and DRV3256PEPAPRQ1 - all use the identical HTQFP-64 (PAP) package with matching pinout, thermal pad, and footprint. This allows drop-in replacement for design reuse, though register maps and ASC/shunt amplifier functionality differ. The DRV3256AEPAPRQ1 shares the same mechanical layout and soldering requirements across all variants, simplifying PCB design for multi-variant platforms.
DRV3256AEPAPRQ1 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:
- SPI
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 2.5A
- Voltage - Supply:
- 20V ~ 90V
- Voltage - Load:
- 20V ~ 90V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
DRV3256AEPAPRQ1 FAQ
1.How can I place an order for DRV3256AEPAPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV3256AEPAPRQ1 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 DRV3256AEPAPRQ1 reliable?
The price and inventory of DRV3256AEPAPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV3256AEPAPRQ1 is usually 5 days.
3.What payment methods are accepted for DRV3256AEPAPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV3256AEPAPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV3256AEPAPRQ1?
DRV3256AEPAPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV3256AEPAPRQ1 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 DRV3256AEPAPRQ1?
For technical support, including DRV3256AEPAPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV3256AEPAPRQ1 requirements.
6.How does Aetrix verify that DRV3256AEPAPRQ1 is sourced from the original manufacturer or authorized distributors?
All DRV3256AEPAPRQ1 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 DRV3256AEPAPRQ1 meets industry standards.
7.What is the process for return or replacement of DRV3256AEPAPRQ1?
All DRV3256AEPAPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DRV3256AEPAPRQ1, 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 DRV3256AEPAPRQ1 part is unused and in its original packaging.
Return procedure for DRV3256AEPAPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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