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Texas Instruments DRV8703DQRHBRQ1
- Part No.:
- DRV8703DQRHBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
DRV8703DQRHBRQ1.pdf
- Description:
- IC MOTOR DRIVER 5.5V-45V 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,867
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Product details
Overview
DRV8703DQRHBRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive half-bridge gate driver that drives two external N-channel MOSFETs for unidirectional brushed-DC motor control, solenoid actuation, or relay switching. It operates from 5.5 V to 45 V, supports 100% PWM duty cycle via integrated charge pump, and delivers programmable gate drive current (up to 440 mA sink) with adjustable slew-rate control.
For engineers reviewing the DRV8703DQRHBRQ1 datasheet, DRV8703DQRHBRQ1 pinout, DRV8703DQRHBRQ1 application, or DRV8703DQRHBRQ1 equivalent, key selection criteria include SPI-configurable current regulation, watchdog timer fault reporting, dual shunt-amplifier gain settings (10×–80×), thermal shutdown at 150°C, and support for 1.8-V/3.3-V/5-V logic interfaces in safety-critical automotive systems.
Technical Context
The DRV8703DQRHBRQ1 implements a Smart Gate Drive architecture with programmable dead time (120–960 ns), active/passive pulldowns to prevent dv/dt turn-on, and gate-clamp protection (±0.7 V to +17.8 V). Its integrated shunt amplifier supports four selectable gains (10×, 20×, 40×, 80×) via GAIN_CS register bits, enabling precise current sensing across wide dynamic ranges.
Unlike the pin-compatible DRV8702D-Q1, the DRV8703DQRHBRQ1 adds SPI interface (nSCS/SCLK/SDI/SDO), watchdog timer with nWDFLT output, and configurable VDS overcurrent threshold (8 levels via VDS_LEVEL register), making it suitable for closed-loop motor control requiring real-time diagnostics and adaptive protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5.5 V to 45 V - enables direct connection to automotive battery rail without pre-regulation |
| Gate Drive Current (HS Sink) | Up to 440 mA - supports fast turn-off of high-capacitance N-channel MOSFETs in high-power loads |
| Shunt Amplifier Gain | Configurable 10×, 20×, 40×, or 80× - allows optimal signal-to-noise ratio for 10 mV–450 mV sense voltage inputs |
| Dead Time Control | Four programmable settings (120/240/480/960 ns) - prevents shoot-through while optimizing efficiency and EMI |
| Overcurrent Detection | VDS-level threshold selectable from 0.06 V to 0.96 V - matches diverse FET RDS(on) values without external resistor changes |
| Thermal Protection | Thermal shutdown at 150°C with 20°C hysteresis - ensures safe operation under sustained overload or poor heatsinking |
| SPI Interface | 4-wire interface (nSCS/SCLK/SDI/SDO) with 100 ns min clock period - enables runtime configuration of registers and fault status readback |
Pinout & Package
DRV8703DQRHBRQ1 uses a 32-pin VQFN package (5.0 mm × 5.0 mm) with wettable flanks and exposed thermal pad for enhanced thermal performance in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GH / GL | High-side / Low-side gate outputs | Drive external N-MOSFET gates with programmable current and slew rate; GH referenced to SH, GL referenced to GND |
| SH / SP / SN | High-side source / shunt+ / shunt− inputs | Connect SH to high-side FET source; SP/SN form differential input for current-sense resistor measurement |
| VREF | Current regulation reference input | Analog voltage (0.3–3.6 V) sets PWM chopping current threshold; impedance varies with gain setting (175 kΩ–1 MΩ) |
| nFAULT / nWDFLT | Fault and watchdog fault outputs | Open-drain signals pulled low on UVLO, OCP, TSD, or watchdog timeout; require external pullup resistors |
| nSCS / SCLK / SDI / SDO | SPI interface pins | Enable register access for configuration (e.g., GAIN_CS, VDS_LEVEL, TDEAD) and real-time fault status monitoring |
| MODE | Operation mode select | No-connect enables internal current regulation; logic-high disables regulation for external PWM control only |
| nSLEEP | Low-power sleep enable | Pulled low to enter <14 µA sleep mode; FETs placed in high-impedance state to isolate load |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive reliability and lifetime requirements |
| Smart Gate Drive architecture | Eliminates need for external gate resistors/Zeners by integrating programmable drive strength, slew control, and clamping |
| Integrated charge pump | Generates >22 V gate drive for high-side FETs - enables 100% PWM duty cycle and reverse-battery switch control |
| Dual protection schemes | Combines VDS-based overcurrent detection (8 thresholds) and shunt-amplifier-based OCP (0.8–1.2 V trip) for robust fault coverage |
| Watchdog timer with dedicated output | nWDFLT pin asserts independently of nFAULT - allows system-level watchdog supervision without masking other faults |
Applications
| Fuel Pump Control | Brushed DC Motor Actuation |
|---|---|
Use Scenario: Regulated 12-V fuel pump driving in passenger vehicles with variable flow demand. IC Role / Device Role / Timing Role: Half-bridge gate driver controlling high-side/low-side N-MOSFETs; performs fixed off-time PWM current chopping using VREF and shunt amplifier feedback. Use Value: Enables precise current limiting (±5% accuracy) and thermal fault response within 1 ms, meeting ISO 26262 ASIL-B diagnostic coverage requirements. |
Use Scenario: Bidirectional window lift motor in automotive door modules requiring stall detection and soft-start. IC Role / Device Role / Timing Role: Configurable gate driver with SPI-accessible registers; uses watchdog timer to detect MCU lockup during critical motion sequences. Use Value: Programmable dead time (120–960 ns) and slew rate reduce EMI emissions below CISPR 25 Class 5 limits during direction reversal. |
| Engine Cooling Fan Control | Solenoid Valve Actuation |
Use Scenario: PWM-controlled radiator fan operating up to 45 V supply during cold cranking or boost conditions. IC Role / Device Role / Timing Role: High-voltage half-bridge driver with charge-pump-enabled 100% duty cycle - sustains full-speed operation when battery dips below 6 V. Use Value: UVLO2 recovery at 5.65 V ensures uninterrupted fan operation during transient brownouts common in start-stop systems. |
Use Scenario: Fast-switching transmission solenoid requiring precise current ramp control and overtemperature shutdown. IC Role / Device Role / Timing Role: Shunt amplifier with 80× gain configures for low-voltage sense (≤56 mV), enabling accurate 0.5-A–5-A current profiling. Use Value: Dual OCP paths (VDS + shunt) provide redundant protection against shorted solenoids and PCB trace failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8702D-Q1 | No SPI interface; no watchdog timer; fixed 240-ns dead time; VDS OCP set by external resistor only | Limited to open-loop PWM control; lacks real-time register readback and independent watchdog signaling | Select when cost-sensitive designs require basic gate driving without diagnostics or configurability |
| TPS65381A-Q1 | Integrated buck regulator + dual half-bridge + current sense; no shunt amplifier gain selection; 4.5–36 V VM range | Targets smaller solenoid/valve loads (<2 A); lacks programmable slew rate and VDS-level OCP granularity | Select when system requires power management integration and lower current capability suffices |
Compared with DRV8702D-Q1 and TPS65381A-Q1, the DRV8703DQRHBRQ1 uniquely combines SPI-configurable protection thresholds, multi-gain shunt amplification, and independent watchdog signaling-making it the only option among the three supporting ASIL-B-compliant closed-loop motor control with field-upgradable parameters.
Availability
DRV8703DQRHBRQ1 is available at Aetrix Electronics and suitable for automotive fuel pumps, brushed DC motor actuators, engine cooling fans, and solenoid valve drivers requiring stable component supply across extended temperature and voltage ranges.
Supply support for DRV8703DQRHBRQ1 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 and embedded processing technologies, with deep expertise in automotive-grade power management ICs.
The DRV870x-Q1 product line was designed specifically for AEC-Q100-compliant unidirectional motor and solenoid control in harsh automotive environments, emphasizing functional safety, thermal resilience, and diagnostic flexibility.
FAQ
What is the maximum gate drive current capability of the DRV8703DQRHBRQ1?
The DRV8703DQRHBRQ1 supports programmable peak gate drive current up to 440 mA sink on the high-side output (GH) and 430 mA sink on the low-side output (GL) at 13.5 V VM. This is achieved via the 3-bit IDRIVE register, which selects from eight discrete current levels. The actual drive strength directly impacts MOSFET switching speed and power loss, making it critical for optimizing efficiency in high-frequency PWM applications.
Does the DRV8703DQRHBRQ1 support 100% PWM duty cycle operation?
Yes, the DRV8703DQRHBRQ1 supports true 100% PWM duty cycle operation through its integrated charge pump, which generates a boosted gate drive voltage (up to 24.5 V at 13.5 V VM) for the high-side N-MOSFET. This eliminates the need for external bootstrap circuitry and ensures reliable conduction during continuous on-state conditions-essential for applications like fuel pump hold-open or solenoid latching.
How does the shunt amplifier gain configuration work on the DRV8703DQRHBRQ1?
The DRV8703DQRHBRQ1 provides four shunt amplifier gain settings (10×, 20×, 40×, 80×) controlled by the 2-bit GAIN_CS register. Each setting optimizes the input voltage range: 80× supports ≤56 mV sense signals, while 10× accommodates up to 450 mV. This flexibility allows precise current sensing across diverse shunt resistor values and load current ranges without hardware changes.
What protection features are implemented in the DRV8703DQRHBRQ1?
The DRV8703DQRHBRQ1 integrates six protection mechanisms: supply undervoltage lockout (UVLO), charge-pump undervoltage (CPUV), overcurrent protection (dual-path: VDS-level and shunt-amplifier), gate-driver fault (GDF), thermal shutdown (TSD), and watchdog timer fault (WDF). All faults assert the open-drain nFAULT pin, while WDF triggers the dedicated nWDFLT output-enabling layered fault isolation in safety-critical systems.
Is the DRV8703DQRHBRQ1 pin-compatible with the DRV8702D-Q1?
Yes, the DRV8703DQRHBRQ1 is pin-compatible with the DRV8702D-Q1 in the same 32-pin VQFN (RHB) package. However, pin functions differ: DRV8703DQRHBRQ1 repurposes pins 4–7 and 9 as SPI interface (SDO/SCLK/SDI/nWDFLT), whereas those pins are NC or unused in DRV8702D-Q1. PCB layout must accommodate these functional differences despite identical footprint and thermal pad geometry.
DRV8703DQRHBRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
DRV8703DQRHBRQ1 FAQ
1.How can I place an order for DRV8703DQRHBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8703DQRHBRQ1 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 DRV8703DQRHBRQ1 reliable?
The price and inventory of DRV8703DQRHBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8703DQRHBRQ1 is usually 5 days.
3.What payment methods are accepted for DRV8703DQRHBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8703DQRHBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8703DQRHBRQ1?
DRV8703DQRHBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8703DQRHBRQ1 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 DRV8703DQRHBRQ1?
For technical support, including DRV8703DQRHBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8703DQRHBRQ1 requirements.
6.How does Aetrix verify that DRV8703DQRHBRQ1 is sourced from the original manufacturer or authorized distributors?
All DRV8703DQRHBRQ1 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 DRV8703DQRHBRQ1 meets industry standards.
7.What is the process for return or replacement of DRV8703DQRHBRQ1?
All DRV8703DQRHBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DRV8703DQRHBRQ1, 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 DRV8703DQRHBRQ1 part is unused and in its original packaging.
Return procedure for DRV8703DQRHBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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