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Texas Instruments DRV8350RHRGZR
- Part No.:
- DRV8350RHRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
DRV8350RHRGZR.pdf
- Description:
- IC MTR DRV MULTIPHAS 6-95V 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,316
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Product details
Overview
DRV8350RHRGZR from Texas Instruments is a 9–75-V, three-phase smart gate driver IC with integrated buck regulator (350 mA), triple low-side current shunt amplifiers, and hardware-only interface. It drives N-channel MOSFET half-bridges in BLDC motor control systems, supports 6x/3x/1x PWM modes, and delivers 50 mA–1 A peak source / 100 mA–2 A peak sink gate drive current for high-efficiency motor modules in e-mobility and power tools.
For engineers reviewing the DRV8350RHRGZR datasheet, DRV8350RHRGZR pinout, DRV8350RHRGZR application, or DRV8350RHRGZR equivalent, key selection criteria include its VQFN-48 package with exposed thermal pad, integrated 350-mA buck regulator (6–95 V input), triple shunt amplifier gain configurability (5/10/20/40 V/V), VM undervoltage lockout, and nFAULT open-drain fault reporting.
Technical Context
The DRV8350RHRGZR implements Smart Gate Drive (SGD) architecture to enforce minimum dead time and VGS handshake, preventing shoot-through during high-speed switching. Its charge pump enables 100% duty-cycle high-side drive, while strong pulldown circuitry mitigates dV/dt-induced parasitic turn-on.
It integrates an LM5008A-based buck regulator (2.5–75 V output) and three independent current sense amplifiers with bidirectional support-both configurable via external resistors (IDRIVE, MODE, GAIN, RCL). Fault detection includes VM UVLO, GDUV, VDS overcurrent, thermal warning/shutdown, and gate driver fault, all signaled via nFAULT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 9 V to 75 V on VM pin - supports wide-input industrial and e-mobility battery systems without external pre-regulation. |
| Buck Regulator Output | 350 mA at 2.5–75 V - powers external microcontrollers or sensors directly from high-voltage bus. |
| Gate Drive Current | 50 mA to 1 A source / 100 mA to 2 A sink - adjustable via IDRIVE pin to optimize switching loss vs. EMI in MOSFET selection. |
| Current Sense Amplifiers | Triple low-side shunt amps with 5/10/20/40 V/V gain - enables precise phase current measurement for FOC or trapezoidal control. |
| Fault Reporting | nFAULT open-drain output - asserts logic-low during VM UVLO, VDS OCP, thermal shutdown, or gate fault for system-level safety response. |
| Control Interface | Hardware-only (H/W) mode - uses dedicated INHA–INLC and ENABLE pins; no SPI required, simplifying real-time deterministic timing. |
| Thermal Protection | OTW (thermal warning) and OTSD (shutdown) - triggers at 150°C junction, with automatic recovery after cooldown. |
Pinout & Package
VQFN-48 package (7.0 mm × 7.0 mm, 0.4 mm pitch) with exposed thermal pad - optimized for high-power motor drive thermal dissipation and PCB layout compactness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GHA, GHB, GHC | High-side gate driver outputs | Drive gates of three high-side N-MOSFETs; each supports up to 1-A peak source current. |
| GLA, GLB, GLC | Low-side gate driver outputs | Drive gates of three low-side N-MOSFETs; each supports up to 2-A peak sink current. |
| INHA–INLC | PWM control inputs | Direct hardware-level gate control signals; enable 6x, 3x, or 1x commutation modes without firmware overhead. |
| nFAULT | Open-drain fault indicator | Asserts low on any internal fault (VM UVLO, VDS OCP, OTSD); requires external pull-up for MCU interrupt detection. |
| ENABLE | Global gate driver enable | Logic-low entry into 20-µA sleep mode; 8–40 µs pulse resets latched faults. |
| VCP, CPH, CPL | Charge pump network | Generates boosted voltage for high-side gate drive; requires external 47-nF ceramic capacitor between CPH–CPL. |
| FB | Buck regulator feedback | Sets regulated output voltage via resistor divider from buck output - enables precise 3.3 V or 5 V rail generation. |
| VDRAIN | Drain sense & charge pump reference | Connects to common drain node of high-side MOSFETs; serves as reference for VDS monitoring and charge pump operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable slew rate control | Reduces EMI by tuning MOSFET switching edge rates via external RC on IDRIVE pin - avoids filter redesign across motor loads. |
| VGS handshake + min. dead time | Hardware-enforced timing prevents shoot-through even under transient MCU signal glitches - eliminates need for external dead-time logic. |
| Integrated buck regulator | 350-mA, 6–95-V input capable regulator replaces discrete DC/DC stage - reduces BOM count and board area in space-constrained modules. |
| Triple shunt amplifier support | Configurable gain (5–40 V/V) and bidirectional sensing - enables accurate current reconstruction for field-oriented control without external op-amps. |
| dV/dt robust pulldown | Strong low-impedance gate discharge path suppresses false turn-on from high dv/dt noise in high-power inverters - improves reliability in noisy E-bike or tool environments. |
Applications
| Motor Control Module | E-Bike Powertrain |
|---|---|
Use Scenario: Integrated 3-phase inverter for 250–500-W BLDC hub motors in mid-drive e-bikes. IC Role / Device Role / Timing Role: Three-phase smart gate driver with integrated current sensing and buck supply - manages MOSFET switching, phase current feedback, and MCU power rail generation. Use Value: Eliminates 3 external shunt amps and a separate buck converter, reducing module size by >30% and enabling IP67-rated compact packaging. | Use Scenario: Torque-sensing pedal-assist controller with real-time current loop closure. IC Role / Device Role / Timing Role: Hardware-mode gate driver executing 1x PWM commutation using internal lookup table - offloads timing-critical tasks from main MCU. Use Value: Achieves sub-5-µs dead-time consistency and <100-ns jitter in gate timing - critical for smooth low-RPM torque delivery and acoustic noise reduction. |
| Power Tool Inverter | Industrial Fan Controller |
Use Scenario: Cordless angle grinder with 18–60-V Li-ion battery input and 1.2-kW motor. IC Role / Device Role / Timing Role: High-voltage gate driver with VDS overcurrent protection and thermal shutdown - monitors MOSFET health during stall and overload events. Use Value: VDS sensing eliminates need for external current sense resistors in high-side path - improves efficiency and enables true short-circuit detection below 100 ns. | Use Scenario: HVAC blower with variable-speed control in commercial rooftop units. IC Role / Device Role / Timing Role: Three-phase driver with integrated 11-V VGLS and 5-V DVDD regulators - powers gate drivers, MCU, and Hall-effect sensors from single VM rail. Use Value: Dual internal LDOs reduce external regulator count by two, simplifying compliance testing for IEC 60335-1 safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8353RHRGZR | Includes integrated triple shunt amplifiers (DRV8350R does not) | Required for applications needing inline current sensing without external amplifiers | Select DRV8353RHRGZR when shunt amp integration is mandatory; DRV8350RHRGZR saves cost where external amps already exist. |
| DRV8350SHRGZR | SPI interface variant (vs. hardware-only); same buck and gate drive specs | Suitable for systems requiring register-level fault diagnostics or dynamic parameter reconfiguration | Choose DRV8350SHRGZR only if SPI configurability justifies added firmware complexity and timing overhead. |
Compared with DRV8353RHRGZR, the DRV8350RHRGZR omits shunt amplifiers but retains identical buck capability and hardware control simplicity; versus DRV8350SHRGZR, it trades SPI flexibility for deterministic real-time response and lower software dependency.
Availability
DRV8350RHRGZR is available at Aetrix Electronics and suitable for e-bike powertrains, cordless power tools, and industrial fan controllers requiring stable component supply, long-term lifecycle assurance, and automotive-grade thermal robustness.
Supply support for DRV8350RHRGZR 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 power management technologies for industrial, automotive, and consumer applications.
The DRV835x product line delivers highly integrated three-phase gate drivers for BLDC motor control, designed to reduce system complexity, improve power efficiency, and accelerate time-to-market in e-mobility and power tool applications.
FAQ
What is the maximum VM supply voltage supported by the DRV8350RHRGZR?
The DRV8350RHRGZR supports a VM supply voltage range of 9 V to 75 V, with absolute maximum rating at 100 V. Operation above 75 V is not recommended for sustained use, as electrical characteristics are specified only up to 75 V per the datasheet's recommended operating conditions. The device includes VM undervoltage lockout (UVLO) that disables gate drive below 8.5 V nominal to prevent erratic behavior.
Does the DRV8350RHRGZR include integrated current sense amplifiers?
No, the DRV8350RHRGZR does not include integrated current sense amplifiers. Unlike the DRV8353RHRGZR variant, the DRV8350RHRGZR omits the shunt amplifier block. It retains all gate drive, buck regulation, and protection features, but external amplifiers or shunt-based sensing circuits must be used for phase current measurement.
What package type and thermal characteristics does the DRV8350RHRGZR use?
The DRV8350RHRGZR uses a 48-pin VQFN package (RGZR suffix) measuring 7.0 mm × 7.0 mm with an exposed thermal pad. Its θJA is 26.2°C/W and θJC is 1.5°C/W, enabling efficient heat transfer to the PCB. The thermal pad must be soldered to a large copper pour with multiple vias to internal ground planes to maintain junction temperature below 150°C under full load.
Can the DRV8350RHRGZR operate in 1x PWM mode with internal commutation?
Yes, the DRV8350RHRGZR supports 1x PWM mode using an internal commutation table for sensored trapezoidal BLDC control. When configured via the MODE pin, it accepts a single PWM input and Hall sensor signals (via INHA–INLC logic levels) to autonomously sequence gate drive outputs - reducing MCU GPIO count and firmware timing burden in cost-sensitive applications.
How is fault condition reset handled on the DRV8350RHRGZR?
Fault conditions on the DRV8350RHRGZR are reset by applying an 8–40 µs logic-low pulse to the ENABLE pin. This action clears latched faults (e.g., VDS OCP, thermal shutdown) and restores normal operation if root causes are resolved. The nFAULT pin remains asserted low until reset, providing unambiguous hardware-level fault signaling to the host controller.
DRV8350RHRGZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Half Bridge (3)
- Interface:
- Hardwired (HW)
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Brushless DC (BLDC)
- Current - Output:
- 25mA
- Voltage - Supply:
- 6V ~ 95V
- Voltage - Load:
- 9V ~ 75V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
DRV8350RHRGZR FAQ
1.How can I place an order for DRV8350RHRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8350RHRGZR 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 DRV8350RHRGZR reliable?
The price and inventory of DRV8350RHRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8350RHRGZR is usually 5 days.
3.What payment methods are accepted for DRV8350RHRGZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8350RHRGZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8350RHRGZR?
DRV8350RHRGZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8350RHRGZR 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 DRV8350RHRGZR?
For technical support, including DRV8350RHRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8350RHRGZR requirements.
6.How does Aetrix verify that DRV8350RHRGZR is sourced from the original manufacturer or authorized distributors?
All DRV8350RHRGZR 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 DRV8350RHRGZR meets industry standards.
7.What is the process for return or replacement of DRV8350RHRGZR?
All DRV8350RHRGZR units undergo pre-shipment inspection (PSI). If there is an issue with DRV8350RHRGZR, 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 DRV8350RHRGZR part is unused and in its original packaging.
Return procedure for DRV8350RHRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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