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Texas Instruments DRV8702QRHBTQ1
- Part No.:
- DRV8702QRHBTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
DRV8702QRHBTQ1.pdf
- Description:
- IC MOTOR DRIVER 5.5V-45V 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:469
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Product details
Overview
DRV8702QRHBTQ1 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, supports 5.5–45 V supply voltage, enables 100% PWM duty cycle via integrated charge pump, and delivers adjustable gate drive current up to 240 mA source / 420 mA sink (at VM = 5.5 V) in power window, seat, and sunroof actuation systems.
For engineers reviewing the DRV8702QRHBTQ1 datasheet, DRV8702QRHBTQ1 pinout, DRV8702QRHBTQ1 application, or DRV8702QRHBTQ1 equivalent, key selection considerations include its PH/EN and independent H-bridge control interface, integrated shunt-amplifier-based current regulation, Smart Gate Drive architecture with programmable slew-rate and dead-time optimization, and comprehensive protection suite including UVLO, OCP, TSD, and fault reporting via nFAULT.
Technical Context
The DRV8702QRHBTQ1 implements a single H-bridge topology using four external N-FETs, with independent high-side (GH1/GH2) and low-side (GL1/GL2) gate drivers controlled by PH/EN or PWM logic. Its charge-pump circuit generates boosted gate drive voltage (up to VVM + 12 V) enabling full 100% duty-cycle operation and reverse-battery switch control.
Current regulation is achieved via internal fixed off-time PWM chopping, configured through VREF input (0.3–3.6 V), with real-time sensing via SP/SN inputs and SO output. Protection includes VM undervoltage lockout (5.45 V trip), charge-pump UVLO, overcurrent detection via VDS monitoring or shunt amplifier (1.0 V typical trip), thermal shutdown at 150°C, and active pulldowns preventing dv/dt turn-on.
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. |
| Gate Drive Current (HS Sink) | Up to 420 mA - ensures fast turn-off of high-side N-FETs under low-VM conditions (5.5 V), minimizing shoot-through risk. |
| Charge-Pump Output (VCP) | 9.1–24.5 V - dynamically tracks VM to maintain sufficient VGS for high-side FET enhancement across full input range. |
| Current Sense Accuracy | ±10 mV input offset, ±10 µV/°C drift - enables precise closed-loop current control for torque-sensitive applications like power seats. |
| Thermal Shutdown Threshold | 150°C junction temperature - provides robust overtemperature protection during sustained stall or overload events. |
| Logic Input Compatibility | 1.8 V / 3.3 V / 5 V - allows direct interfacing with MCU GPIOs without level-shifting in diverse ECU architectures. |
| Protection Features | UVLO, CPUV, OCP (dual-method), GDF, TSD, watchdog-free fault reporting - eliminates need for external supervision circuitry. |
Pinout & Package
DRV8702QRHBTQ1 is housed in a 32-pin VQFN package (5.00 mm × 5.00 mm) with wettable flanks and exposed thermal pad for enhanced thermal performance in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4, 7, 9, 13, 17) | Power ground reference | Six dedicated GND pins minimize ground bounce and improve noise immunity in high-current motor drive paths. |
| GH1, GH2 (Pins 18, 26) | High-side gate drive outputs | Drive gates of two external high-side N-FETs; each supports 11.5 V VGS at VM = 13.5 V for reliable enhancement. |
| GL1, GL2 (Pins 20, 24) | Low-side gate drive outputs | Drive gates of two external low-side N-FETs; sink capability up to 500 mA ensures rapid discharge and short dead time. |
| IN1/PH, IN2/EN (Pins 2, 3) | Control interface inputs | Support PH/EN mode: IN1 sets direction, IN2 enables H-bridge; internal pulldowns simplify MCU interface. |
| VREF (Pin 15) | Current regulation reference | Analog input (0.3–3.6 V) sets peak winding current threshold for fixed off-time PWM chopping. |
| nFAULT (Pin 10) | Fault status output | Open-drain signal pulled low on any fault (UVLO, OCP, TSD); requires external pullup for system-level fault handling. |
| nSLEEP (Pin 8) | Low-power mode control | Pull low to enter <14 µA sleep mode; wake-up time <1 ms enables rapid response to vehicle wake signals. |
| SH1, SH2 (Pins 19, 25) | High-side source sense | Connect to sources of high-side FETs for accurate VDS-based overcurrent detection and shoot-through prevention. |
Key Features
| Feature | Design Value |
|---|---|
| Smart Gate Drive Architecture | Eliminates external gate resistors/Zeners by integrating programmable slew-rate control, adaptive dead-time insertion, and gate-short protection. |
| Integrated Charge Pump | Enables 100% PWM duty cycle and reverse-battery switch control without external boost components, reducing BOM count. |
| Independent Half-Bridge Control | Allows sequential control of multiple DC motors using shared FETs-reducing component count in multi-actuator modules (e.g., seat + lumbar). |
| Dual Overcurrent Detection | Combines VDS monitoring (configurable trip: 0.06–0.96 V) and shunt-amplifier sensing (1.0 V typical) for robust fault coverage across FET types and operating conditions. |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C ambient operation with full electrical characterization, ensuring reliability in automotive cabin and under-hood locations. |
Applications
| Power Window Lift | Sunroof Actuation |
|---|---|
Use Scenario: Bidirectional control of brushed-DC motor driving window glass up/down with soft-start and stall detection. IC Role / Device Role / Timing Role: H-bridge gate driver managing four external N-FETs; regulates current via VREF-based PWM chopping and reports faults via nFAULT. Use Value: Enables smooth, quiet motion with integrated current limiting and thermal protection-meeting OEM NVH and safety requirements. |
Use Scenario: Precise open/close control of panoramic sunroof motor with position feedback integration and anti-pinch compliance. IC Role / Device Role / Timing Role: Gate driver with configurable dead time and slew rate to minimize EMI during high-speed transitions; supports PH/EN interface for MCU simplicity. Use Value: Reduces system-level filtering components and simplifies firmware by embedding current regulation and fault diagnostics. |
| Automotive Seat Adjustment | Sliding Door Actuation |
Use Scenario: Multi-axis seat movement (fore/aft, recline, lumbar) requiring coordinated motor sequencing and torque management. IC Role / Device Role / Timing Role: Single H-bridge driver used in independent half-bridge mode to share FETs across axes; VREF adjusts current per axis. Use Value: Lowers total FET count and PCB area vs. discrete drivers-critical for space-constrained seat control modules. |
Use Scenario: High-torque sliding door motor control with obstacle detection, emergency stop, and battery-efficient standby. IC Role / Device Role / Timing Role: Gate driver with ultra-low sleep current (14 µA) and fast wake-up (<1 ms); nSLEEP synchronizes with vehicle CAN wake signals. Use Value: Extends battery life during vehicle sleep mode while maintaining readiness for immediate door operation. |
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 |
|---|---|---|---|
| DRV8703QRHBTQ1 | Includes SPI interface, watchdog timer, programmable gain shunt amplifier, and additional register-configurable protections not present in DRV8702QRHBTQ1. | Required where firmware-based configuration, diagnostics logging, or multi-level current gain selection is needed (e.g., advanced ADAS actuators). | Select DRV8703QRHBTQ1 when SPI configurability and enhanced diagnostic granularity justify added software complexity. |
| TPS65381AQDAGQ1 | Integrated PMIC + dual H-bridge gate driver; includes buck converters, LDOs, and system supervisor-no external regulators needed. | Used in compact ECUs where power management and motor drive must be co-integrated (e.g., small-body control units). | Choose TPS65381AQDAGQ1 only when full power-tree integration is required and board space is severely constrained. |
Compared with DRV8703QRHBTQ1, the DRV8702QRHBTQ1 offers simpler hardware and firmware integration with identical gate drive performance and protection, while TPS65381AQDAGQ1 trades gate-driver flexibility for system-level integration-making DRV8702QRHBTQ1 optimal for cost- and size-sensitive standalone motor modules.
Availability
DRV8702QRHBTQ1 is available at Aetrix Electronics and suitable for automotive power window lift, sunroof actuation, and seat adjustment systems requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for DRV8702QRHBTQ1 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 leader specializing in analog, embedded processing, and automotive-grade ICs with decades of automotive qualification expertise and functional safety documentation support.
The DRV870x-Q1 product line is designed specifically for cost-optimized, high-reliability brushed-DC motor actuation in automotive body electronics-emphasizing integration, protection, and AEC-Q100 compliance without sacrificing design flexibility.
FAQ
What control interfaces does the DRV8702QRHBTQ1 support?
The DRV8702QRHBTQ1 supports PH/EN and independent H-bridge modes via IN1/PH and IN2/EN pins, with MODE pin selecting between full-bridge and half-bridge operation. It does not support SPI-unlike the pin-compatible DRV8703QRHBTQ1-making it ideal for systems requiring minimal MCU GPIO usage and deterministic timing without serial configuration overhead.
How does the DRV8702QRHBTQ1 implement current regulation?
The DRV8702QRHBTQ1 uses fixed off-time PWM current chopping, where the VREF pin voltage (0.3–3.6 V) sets the target current threshold. The internal shunt amplifier monitors SP/SN differential voltage across the sense resistor, and when the sensed current exceeds the VREF-derived limit, the driver disables the appropriate FETs for a programmable off-time (25 µs typical) before re-enabling.
What protection features are integrated into the DRV8702QRHBTQ1?
The DRV8702QRHBTQ1 integrates supply undervoltage lockout (UVLO at 5.45 V), charge-pump undervoltage (CPUV), overcurrent protection (OCP) via dual VDS and shunt-amplifier methods, gate-driver fault (GDF), thermal shutdown (TSD at 150°C), and fault reporting via open-drain nFAULT output-all without requiring external supervision circuitry.
Does the DRV8702QRHBTQ1 support 100% duty cycle operation?
Yes, the DRV8702QRHBTQ1 supports true 100% PWM duty cycle operation using its integrated charge-pump circuit, which generates a boosted gate-drive voltage (up to VM + 12 V) to fully enhance high-side N-channel MOSFETs even at low supply voltages such as 5.5 V during cold-crank conditions.
What is the thermal performance of the DRV8702QRHBTQ1 in its VQFN package?
The DRV8702QRHBTQ1 in the 32-pin VQFN (RHB) package has a junction-to-board thermal resistance (RθJB) of 6.8°C/W and junction-to-ambient (RθJA) of 32.9°C/W. With proper PCB copper pour under the thermal pad, it sustains continuous 7.5 mA VM supply current at 125°C ambient-enabling reliable operation in sealed automotive modules without forced airflow.
DRV8702QRHBTQ1 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)
DRV8702QRHBTQ1 FAQ
1.How can I place an order for DRV8702QRHBTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8702QRHBTQ1 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 DRV8702QRHBTQ1 reliable?
The price and inventory of DRV8702QRHBTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8702QRHBTQ1 is usually 5 days.
3.What payment methods are accepted for DRV8702QRHBTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8702QRHBTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8702QRHBTQ1?
DRV8702QRHBTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8702QRHBTQ1 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 DRV8702QRHBTQ1?
For technical support, including DRV8702QRHBTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8702QRHBTQ1 requirements.
6.How does Aetrix verify that DRV8702QRHBTQ1 is sourced from the original manufacturer or authorized distributors?
All DRV8702QRHBTQ1 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 DRV8702QRHBTQ1 meets industry standards.
7.What is the process for return or replacement of DRV8702QRHBTQ1?
All DRV8702QRHBTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DRV8702QRHBTQ1, 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 DRV8702QRHBTQ1 part is unused and in its original packaging.
Return procedure for DRV8702QRHBTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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