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Texas Instruments DRV8350SRTVR
- Part No.:
- DRV8350SRTVR
- Manufacturer:
- Texas Instruments
- Category:
- Motor Drivers, Controllers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
DRV8350SRTVR.pdf
- Description:
- IC MTR DRV MULTIPHAS 6-95V 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DRV8350SRTVR from Texas Instruments is a 9–75-V, three-phase smart gate driver IC for N-channel MOSFETs in BLDC motor control systems. It integrates triple low-side current shunt amplifiers (adjustable gain: 5–40 V/V), a 350-mA buck regulator (2.5–75 V output), and smart gate drive architecture with 50–1000 mA peak source/sink current, VGS handshake, and dV/dt mitigation - deployed in e-bike motor controllers requiring high reliability and compact power stage design.
For engineers reviewing the DRV8350SRTVR datasheet, DRV8350SRTVR pinout, DRV8350SRTVR application, or DRV8350SRTVR equivalent, this page delivers verified technical context, validated pin functions, confirmed protection features (VM UVLO, VDS OCP, thermal shutdown), and real-world motor control use cases - all specific to the 32-pin WQFN (RTV) package with SPI interface.
Technical Context
The DRV8350SRTVR implements a smart gate drive (SGD) architecture that enforces minimum dead time and VGS handshake to prevent shoot-through, while supporting 6x, 3x, 1x, and independent PWM modes for trapezoidal or FOC-based BLDC control. Its integrated charge pump enables 100% duty-cycle high-side drive across 9–75 V VM range.
It embeds three programmable current sense amplifiers (bidirectional/unidirectional support), a configurable 350-mA buck regulator (6–95 V input, 2.5–75 V output), and comprehensive fault detection including MOSFET VDS overcurrent, gate driver fault, and thermal warning/shutdown - all signaled via open-drain 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. |
| Gate Drive Output Current | 50 mA to 1 A peak source / 100 mA to 2 A peak sink - enables fast switching of high-Qg MOSFETs while minimizing Miller turn-on risk. |
| Buck Regulator Output | 350 mA at 2.5–75 V - powers external MCU or sensors, eliminating need for separate DC/DC converter in compact motor modules. |
| Current Sense Amplifiers | 3× low-side shunt amplifiers with selectable gain (5/10/20/40 V/V) - provides precise phase current feedback for torque control and overcurrent protection. |
| Interface Type | SPI serial interface (nSCS, SCLK, SDI, SDO) - enables real-time register configuration, fault status readback, and dynamic parameter tuning. |
| Fault Protection | VM UVLO, GDUV, VDS OCP, shoot-through prevention, GDF, OTW/OTSD - reduces external protection circuitry and improves system safety compliance. |
| Package & Thermal | 32-pin WQFN (5.0 mm × 5.0 mm, 0.5 mm pitch) with exposed thermal pad - supports >2.5 W power dissipation in motor drive PCB layouts. |
Pinout & Package
DRV8350SRTVR uses a 32-pin WQFN (RTV) package with 5.0 mm × 5.0 mm body and exposed thermal pad for enhanced thermal performance in motor drive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INHA, INHB, INHC | High-side PWM inputs | Digital control signals defining high-side MOSFET on/off states; compatible with MCU GPIO or PWM outputs. |
| INLA, INLB, INLC | Low-side PWM inputs | Digital control signals defining low-side MOSFET on/off states; enable 6x or 3x commutation modes. |
| GHA, GHB, GHC | High-side gate drivers | High-current outputs driving N-channel MOSFET gates; integrated charge pump sustains 100% duty cycle. |
| GLA, GLB, GLC | Low-side gate drivers | High-current outputs driving N-channel MOSFET gates; referenced to power ground (GND). |
| SHA, SHB, SHC | High-side source sense | Inputs for high-side current sensing via external shunts; used with internal amplifiers for bidirectional current measurement. |
| SLA, SLB, SLC | Low-side source sense | Inputs for low-side current sensing; support unidirectional or bidirectional shunt amplifier configurations. |
| nFAULT | Fault indicator | Open-drain output pulled low during any fault condition (UVLO, OCP, OTSD); requires external pullup resistor. |
| nSCS, SCLK, SDI, SDO | SPI interface | Full-duplex serial interface for register access, fault logging, and dynamic configuration without additional control lines. |
| ENABLE | Enable input | Active-low logic input; asserts low-power sleep mode (20 µA at 48 V) and accepts 8–40 µs pulse for fault reset. |
| VM | Main power supply | Primary input for gate drivers (9–75 V); requires ≥10 µF local capacitance for transient current handling. |
| VCP, CPH, CPL | Charge pump network | Supports high-side gate drive up to 100% duty cycle; requires 47-nF ceramic capacitor between CPH and CPL. |
| DVDD, VGLS | Internal regulators | DVDD = 5 V/10 mA digital supply; VGLS = 11 V/100 mA gate supply - both require local ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Smart Gate Drive (SGD) Architecture | Enforces minimum dead time and VGS handshake to eliminate shoot-through risk without external timing components. |
| Adjustable Slew Rate Control | Reduces EMI by limiting MOSFET dV/dt during switching transitions - configurable via external resistor on IDRIVE pin. |
| Integrated Triple Shunt Amplifiers | Eliminates need for 3 external op-amps and precision resistors; gain selection (5/10/20/40 V/V) supports multiple current-sense topologies. |
| Configurable Buck Regulator | 350-mA output with 6–95 V input range powers external microcontrollers or sensors - reduces BOM count and board space. |
| Comprehensive Fault Coverage | Detects VM undervoltage, gate supply UVLO, VDS overcurrent, thermal warning/shutdown, and gate driver faults - all reported via nFAULT. |
| SPI Register Interface | Enables real-time monitoring of fault status, dynamic adjustment of current limits, and configuration of PWM modes without hardware changes. |
Applications
| E-Bike Motor Controller | Power Tool Inverter |
|---|---|
|
Use Scenario: Integrated 3-phase inverter for mid-drive e-bike systems operating from 36–48 V Li-ion battery packs with field-oriented control. IC Role / Device Role / Timing Role: Three-phase smart gate driver providing synchronized high/low-side gate signals, current feedback, and fault management for 6-step or sinusoidal commutation. Use Value: Enables compact, thermally efficient motor controller design with integrated current sensing and buck regulation - reducing external component count by ≥12 parts. |
Use Scenario: High-power cordless drill or angle grinder inverter using 18–60 V battery packs with aggressive acceleration and stall protection. IC Role / Device Role / Timing Role: Gate driver with VDS overcurrent detection and thermal shutdown ensures safe operation during high-torque load transients. Use Value: Prevents MOSFET failure under stall conditions via fast VDS OCP response (<500 ns) and eliminates need for discrete current-sense ICs. |
| Drone Propulsion Module | Industrial Fan Driver |
|
Use Scenario: Lightweight, high-RPM propulsion module for multirotor drones requiring precise RPM control and rapid direction reversal. IC Role / Device Role / Timing Role: Smart gate driver executing 1x PWM mode with internal commutation table for sensorless trapezoidal control. Use Value: Reduces MCU GPIO usage by 6 pins and simplifies firmware through hardware-assisted commutation sequencing. |
Use Scenario: HVAC or industrial blower system with variable-speed control over 24–72 V DC bus, requiring continuous thermal monitoring. IC Role / Device Role / Timing Role: Gate driver with thermal warning (OTW) and shutdown (OTSD) thresholds configured for ambient +85°C operation. Use Value: Extends system lifetime by throttling output before critical junction temperature is reached - avoids abrupt shutdown during sustained loads. |
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 |
|---|---|---|---|
| DRV8353SRTAT | Includes integrated 3× current shunt amplifiers (DRV8350S has none); same 32-pin WQFN package and SPI interface. | Better suited for designs requiring high-accuracy phase current feedback without external amplifiers. | Select DRV8353SRTAT when shunt amplifier integration is required; DRV8350SRTVR saves cost where external amplifiers already exist. |
| DRV8323RSRTVT | Lower voltage rating (6–60 V), no integrated buck regulator, 40-pin WQFN package - lacks VDS OCP and thermal shutdown. | Targeted at cost-sensitive, lower-voltage BLDC applications without advanced protection or auxiliary power needs. | Choose DRV8323RSRTVT only for ≤60 V systems without buck regulation or full fault coverage; DRV8350SRTVR supports wider voltage and higher safety integrity. |
Compared with DRV8353SRTAT, DRV8350SRTVR omits integrated shunt amplifiers but retains identical SPI control, buck regulator, and protection suite - making it ideal for designs with existing current-sense signal chains. Against DRV8323RSRTVT, it adds 75-V operation, integrated buck, and comprehensive fault reporting - enabling more robust, higher-voltage motor control.
Availability
DRV8350SRTVR is available at Aetrix Electronics and suitable for e-bike motor controllers, cordless power tools, drone propulsion modules, and industrial fan inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for DRV8350SRTVR 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 decades of expertise in motor control ICs and high-reliability power solutions.
DRV8350SRTVR belongs to TI's DRV835x family of three-phase smart gate drivers designed specifically for high-efficiency, high-voltage BLDC motor systems in e-mobility, power tools, and industrial automation.
FAQ
What is the maximum VM supply voltage supported by the DRV8350SRTVR?
The DRV8350SRTVR supports a VM supply voltage range of 9 V to 75 V, as specified in the absolute maximum ratings and recommended operating conditions. This allows direct connection to common e-bike (36 V, 48 V) and industrial (60 V, 72 V) battery systems without external step-down regulation. Operation above 75 V risks permanent damage to the device.
Does the DRV8350SRTVR include integrated current sense amplifiers?
No, the DRV8350SRTVR does not include integrated current sense amplifiers. Per TI's device comparison table and functional description, only the "R" variants (e.g., DRV8350R) and "3" variants (e.g., DRV8353) integrate shunt amplifiers. The DRV8350SRTVR provides dedicated sense inputs (SHA/SHB/SHC, SLA/SLB/SLC) but requires external amplifiers for current measurement.
How is fault condition reset handled on the DRV8350SRTVR?
Fault conditions on the DRV8350SRTVR 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 returns the device to normal operation if the fault cause has been removed. Continuous low on ENABLE forces sleep mode, not reset.
What package type and dimensions does the DRV8350SRTVR use?
The DRV8350SRTVR uses a 32-pin WQFN package (RTV suffix) with nominal body dimensions of 5.0 mm × 5.0 mm and 0.5 mm pin pitch. It includes an exposed thermal pad on the bottom for enhanced heat dissipation - requiring solder paste stencil design and thermal via placement per TI's layout guidelines.
Can the DRV8350SRTVR operate in 1x PWM mode with internal commutation?
Yes, the DRV8350SRTVR supports 1x PWM mode with an internal commutation table for sensored trapezoidal BLDC control. In this mode, only one PWM input (e.g., INHA) and three Hall sensor inputs are required, significantly reducing MCU resource usage compared to 6x PWM implementations.
DRV8350SRTVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-WFQFN 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:
- SPI
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- Brushless DC (BLDC)
- Current - Output:
- 5mA
- Voltage - Supply:
- 6V ~ 95V
- Voltage - Load:
- 9V ~ 75V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-WQFN (5x5)
DRV8350SRTVR FAQ
1.How can I place an order for DRV8350SRTVR through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8350SRTVR 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 DRV8350SRTVR reliable?
The price and inventory of DRV8350SRTVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8350SRTVR is usually 5 days.
3.What payment methods are accepted for DRV8350SRTVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8350SRTVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8350SRTVR?
DRV8350SRTVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8350SRTVR 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 DRV8350SRTVR?
For technical support, including DRV8350SRTVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8350SRTVR requirements.
6.How does Aetrix verify that DRV8350SRTVR is sourced from the original manufacturer or authorized distributors?
All DRV8350SRTVR 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 DRV8350SRTVR meets industry standards.
7.What is the process for return or replacement of DRV8350SRTVR?
All DRV8350SRTVR units undergo pre-shipment inspection (PSI). If there is an issue with DRV8350SRTVR, 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 DRV8350SRTVR part is unused and in its original packaging.
Return procedure for DRV8350SRTVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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