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Texas Instruments DRV8703QRHBTQ1
- Part No.:
- DRV8703QRHBTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
DRV8703QRHBTQ1.pdf
- Description:
- IC MOTOR DRIVER 5.5V-45V 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,132
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Product details
Overview
DRV8703QRHBTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive H-bridge gate driver IC that drives four external N-channel MOSFETs for bidirectional brushed-DC motor control. It supports 5.5–45 V supply, 100% PWM duty cycle, and integrated PWM current regulation with adjustable off-time (25–200 µs). It is used in power window lift, sunroof, seat, and sliding door actuation systems.
For engineers reviewing the DRV8703QRHBTQ1 datasheet, DRV8703QRHBTQ1 pinout, DRV8703QRHBTQ1 application, or DRV8703QRHBTQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade protection features (UVLO, OCP, TSD, watchdog), and real-world implementation constraints including SPI configuration, slew-rate control, and independent half-bridge mode.
Technical Context
The DRV8703QRHBTQ1 implements Smart Gate Drive architecture with programmable slew-rate control and adaptive dead-time adjustment (120–960 ns) to prevent shoot-through and reduce EMI. Its integrated charge pump enables 100% duty-cycle operation and supports external reverse-battery switch control.
It provides three interface modes-PH/EN, independent H-bridge, and PWM-and includes a configurable SPI interface (SCLK/SDI/SDO/nSCS/nWDFLT) for register-based configuration of current regulation, overcurrent thresholds, watchdog delay (10–100 ms), and dead-time selection. The device integrates a precision shunt amplifier (gain = 9.75–81 V/V) and fixed off-time PWM current chopping with blanking time (2 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5 V to 45 V - supports wide automotive battery range including cold-crank (5.5 V) and load-dump (45 V) conditions. |
| Operating Temperature | –40°C to +125°C ambient - AEC-Q100 Grade 1 qualification ensures reliability in under-hood and cabin applications. |
| PWM Off-Time | 25 µs to 200 µs (configurable via TOFF bits) - sets minimum current-regulation interval for brushed-DC motor winding control. |
| Watchdog Timeout | 10 ms to 100 ms (configurable via WD_DLY bits) - enables system-level fault detection and recovery in safety-critical automotive modules. |
| Gate Drive Current | Up to 440 mA sink / 260 mA source (high-side, VVM = 13.5 V) - sufficient to drive high-Qg automotive MOSFETs with fast switching. |
| Shunt Amplifier Gain | 9.75–81 V/V (4 selectable ranges) - allows precise current sensing across varied sense-resistor values and motor current ranges. |
| Dead Time | 120–960 ns (configurable via TDEAD bits) - prevents shoot-through while enabling optimization for efficiency vs. EMI trade-offs. |
Pinout & Package
The DRV8703QRHBTQ1 is housed in a 32-pin VQFN package (RHB) with wettable flanks, measuring 5.00 mm × 5.00 mm, and includes an exposed thermal pad for enhanced thermal dissipation in automotive motor-control PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GH1, GH2 | High-side gate outputs | Drive gates of two external high-side N-MOSFETs; support 11.5 V VGS at 13.5 V VM with internal charge pump. |
| GL1, GL2 | Low-side gate outputs | Drive gates of two external low-side N-MOSFETs; provide up to 430 mA sink current for fast turn-off. |
| SH1, SH2, SL2 | High-/low-side source inputs | Connect to FET sources to enable accurate VDS monitoring and current-sense amplifier referencing. |
| VREF | Current regulation reference input | Sets peak motor current threshold via external voltage (0.3–3.6 V); determines PWM chopping level. |
| nWDFLT | Watchdog fault output | Open-drain signal pulled low on watchdog timeout - requires external pullup; distinct from nFAULT for layered diagnostics. |
| SCLK, SDI, SDO, nSCS | SPI interface pins | Enable full register access for configuration of protection thresholds, timing, gain, and operational modes. |
Key Features
| Feature | Design Value |
|---|---|
| Smart Gate Drive Architecture | Eliminates need for external gate resistors/Zener clamps by integrating adaptive slew-rate control, active pulldowns, and gate-clamp protection (±0.7 V negative, 17 V positive). |
| Configurable Independent Half-Bridge Mode | Allows sequential control of multiple DC motors using shared FETs - reduces BOM cost and PCB area in multi-actuator systems like seat + window modules. |
| Integrated PWM Current Regulation | Fixed off-time chopping with 2 µs blanking time and 4 programmable TOFF settings (25–200 µs) enables stable, ripple-controlled motor current without external controllers. |
| Automotive-Grade Protection Suite | Includes UVLO (5.45 V trip), CPUV, OCP (VDS- or shunt-based), GDF, TSD (150°C), and watchdog timer - all with dedicated fault reporting via nFAULT and nWDFLT pins. |
| 1.8V/3.3V/5V Logic Compatibility | Supports direct interfacing to diverse microcontrollers (e.g., TI C2000, Infineon AURIX) without level-shifting, reducing component count and layout complexity. |
Applications
| Power Window Lift System | Sunroof Actuation Module |
|---|---|
Use Scenario: Bidirectional control of 12 V brushed-DC motor driving window glass up/down with soft-start and stall detection. IC Role / Device Role / Timing Role: H-bridge gate driver providing PWM current-regulated phase control, VDS-based overcurrent protection, and thermal shutdown during jam events. Use Value: Enables precise force limiting and silent operation via adjustable slew rate and 2 µs blanking time, meeting OEM acoustic and safety requirements. | Use Scenario: Controlled opening/closing of panoramic sunroof with position feedback and obstacle detection. IC Role / Device Role / Timing Role: Configured in independent half-bridge mode to share FETs between sunroof motor and tilt mechanism - reducing component count per axis. Use Value: Low-power sleep mode (14 µA) and watchdog timer ensure fail-safe behavior during vehicle sleep states and rapid wake-up (<1 ms) for responsive user interaction. |
| Automotive Seat Adjustment | Sliding Door Actuator |
Use Scenario: Multi-axis control of lumbar, recliner, and fore-aft seat motors requiring coordinated sequencing and current profiling. IC Role / Device Role / Timing Role: SPI-configured current regulation (VREF-set) and programmable TOFF (100 µs) deliver consistent torque across temperature and battery voltage variations. Use Value: Integrated shunt amplifier with 4 gain ranges (9.75–81 V/V) accommodates diverse sense-resistor values (e.g., 2 mΩ to 10 mΩ), simplifying design reuse across seat variants. | Use Scenario: High-reliability, high-current actuation of heavy-duty sliding door with anti-pinch compliance. IC Role / Device Role / Timing Role: Dual H-bridge driver with watchdog-enabled fault reporting (nWDFLT) and thermal warning (135°C) for ASIL-B–aligned system monitoring. Use Value: Charge-pump support for 100% duty cycle enables full-voltage hold during door latching, eliminating need for external boost circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8702QRHBTQ1 | No SPI interface; no watchdog timer; fixed dead time (240 ns); no nWDFLT pin; uses resistor-based IDRIVE and VDS configuration instead of register-based. | Lacks diagnostic configurability and layered fault reporting - suitable only for cost-sensitive, non-safety-critical single-motor applications. | Select DRV8702QRHBTQ1 only if SPI configuration, watchdog, or dual-fault signaling (nFAULT + nWDFLT) are unnecessary. |
| TPIC2101QPWPRQ1 | Single-channel high-side driver (not H-bridge); no current regulation; no charge pump; supports only 4.5–40 V; lacks shunt amplifier and PWM chopping. | Designed for relay replacement or solenoid control - not suitable for bidirectional brushed-DC motor commutation or current-regulated torque control. | Choose TPIC2101QPWPRQ1 only for unidirectional, non-chopping loads where gate drive simplicity outweighs motor-control functionality. |
Compared with DRV8702QRHBTQ1 and TPIC2101QPWPRQ1, the DRV8703QRHBTQ1 uniquely combines SPI-configurable current regulation, watchdog-enabled diagnostics, and independent half-bridge flexibility - making it the only option among the three qualified for ASIL-B–aligned multi-actuator automotive body control modules.
Availability
DRV8703QRHBTQ1 is available at Aetrix Electronics and suitable for power window lift, sunroof actuation, and automotive seat adjustment systems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for DRV8703QRHBTQ1 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 electronics with broad portfolio coverage and deep automotive qualification expertise.
The DRV870x-Q1 product line was designed specifically for cost-optimized, high-reliability brushed-DC motor actuation in automotive body electronics - emphasizing functional safety readiness, thermal robustness, and integration of gate drive, current sensing, and protection in a single 5 mm × 5 mm package.
FAQ
What is the maximum motor supply voltage supported by the DRV8703QRHBTQ1?
The DRV8703QRHBTQ1 supports a VM supply voltage range of 5.5 V to 45 V. This covers automotive battery nominal (12 V), cold-crank (as low as 5.5 V), and load-dump (up to 45 V) conditions. Absolute maximum rating is 47 V, but operation beyond 45 V is not recommended per datasheet specifications.
Does the DRV8703QRHBTQ1 include integrated current sensing?
Yes, the DRV8703QRHBTQ1 integrates a precision shunt amplifier with four programmable gain settings (9.75, 19.8, 39.4, and 78 V/V) and supports both high-side and low-side current-sense configurations via SP/SN pins. It also provides VREF-based PWM current regulation with blanking time and configurable off-time.
How does the watchdog timer function in the DRV8703QRHBTQ1?
The DRV8703QRHBTQ1 watchdog timer monitors SPI communication activity and resets if no valid command is received within the programmed timeout period (10, 20, 50, or 100 ms). On timeout, nWDFLT asserts low, enabling system-level fault escalation independent of nFAULT - a key feature for functional safety designs.
Can the DRV8703QRHBTQ1 drive external P-channel high-side MOSFETs?
No, the DRV8703QRHBTQ1 is designed exclusively for four external N-channel MOSFETs in an H-bridge configuration. Its gate drivers (GH1/GH2/GL1/GL2) are optimized for N-MOS control with integrated charge pump for high-side bootstrapping - it does not support direct P-channel high-side drive.
What package type and thermal characteristics does the DRV8703QRHBTQ1 use?
The DRV8703QRHBTQ1 uses a 32-pin VQFN (RHB) package with wettable flanks, 5.00 mm × 5.00 mm body size, and an exposed thermal pad. Its junction-to-board thermal resistance (RθJB) is 6.8 °C/W, and junction-to-ambient (RθJA) is 32.9 °C/W - enabling reliable operation at 125°C ambient when properly mounted on a 2-layer or 4-layer PCB with thermal vias.
DRV8703QRHBTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- PWM
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Brushed DC
- Current - Output:
- -
- Voltage - Supply:
- 5.5V ~ 45V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 32-VQFN (5x5)
DRV8703QRHBTQ1 FAQ
1.How can I place an order for DRV8703QRHBTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8703QRHBTQ1 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 DRV8703QRHBTQ1 reliable?
The price and inventory of DRV8703QRHBTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8703QRHBTQ1 is usually 5 days.
3.What payment methods are accepted for DRV8703QRHBTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8703QRHBTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8703QRHBTQ1?
DRV8703QRHBTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8703QRHBTQ1 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 DRV8703QRHBTQ1?
For technical support, including DRV8703QRHBTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8703QRHBTQ1 requirements.
6.How does Aetrix verify that DRV8703QRHBTQ1 is sourced from the original manufacturer or authorized distributors?
All DRV8703QRHBTQ1 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 DRV8703QRHBTQ1 meets industry standards.
7.What is the process for return or replacement of DRV8703QRHBTQ1?
All DRV8703QRHBTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DRV8703QRHBTQ1, 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 DRV8703QRHBTQ1 part is unused and in its original packaging.
Return procedure for DRV8703QRHBTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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