DRV8350FHRTVR - 102V 3-Phase Smart Gate Driver | Texas Instruments
MPN: DRV8350FHRTVR ✓ Hoạt độngDRV8350FHRTVR Tóm tắt
What is a smart gate driver? A smart gate driver is an integrated circuit that sits between a microcontroller's low-voltage PWM outputs and the high-power N-channel MOSFETs of a motor inverter. By embedding level shifting, dead-time generation, gate-drive current regulation, and protection (overcurrent, overtemperature, undervoltage, and short-circuit), the smart gate driver replaces dozens of discrete components and reduces PCB area while improving reliability. The DRV8350F belongs to the broader category of three-phase motor drivers, which sit between microcontrollers and motor windings in the BLDC system hierarchy: MCU -> gate driver -> power MOSFETs -> BLDC motor.
Key features include integrated charge-pump and bootstrap supply for 100% duty-cycle high-side drive, a programmable dead time, and a 75-V wide common-mode CSA (current shunt amplifier) with adjustable gain. The hardware variant eliminates SPI register access, simplifying firmware and reducing MCU overhead. Functional Safety Quality-Managed documentation includes failure modes, effects, and diagnostics analysis (FMEDA) and a safety manual, which is uncommon for gate drivers and valuable for IEC 61508 / ISO 26262 development.
Architecture combines a charge-pump regulator (for low supply conditions), three bootstrap diodes, three low-side gate drivers, three high-side gate drivers, and an integrated current-shunt amplifier. The DRV8350FHRTVR is the "F" Functional Safety variant of the DRV835x family, which also includes the DRV8350 (non-functional-safety) and DRV8353 (with integrated buck regulator) derivatives.
Typical applications include cordless power tools, e-bikes, e-scooters, drones, robotics, small pumps, and fans where 100-V absolute-max ratings and 3-phase brushless drive are required. The HW interface makes it well-suited for cost-sensitive designs without SPI firmware overhead. Choose this part when you need a 100-V class three-phase gate driver with functional-safety collateral but without an integrated buck.
When designing with the DRV8350FHRTVR, ensure the SHx pins have local 0.1-uF + bootstrap-capacitor ceramic bypass and that the GVDD regulator cap is sized per datasheet for 4.7 uF or larger. The CSA inputs must be biased so that 0-A current sits near mid-supply to maximize linear input range.
Bộ thay thế dễ dàng lắp đặt cho DRV8350FHRTVR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DRV8350FHRTVR (cùng hình factor và footprint) — khác nhau ở Interface, Package, Product Type, Current Shunt Amplifier, MSL Level.
DRV8350HRTVR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DRV8350HRTVT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DRV8350FHRTAR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DRV8350FHRTVT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DRV8350FHRTVR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DRV8350FHRTVR Tỷ lệ tối đa & tính chất điện
| Product Type | Three-phase smart gate driver (HW interface) |
| Number of Half-Bridges | 3 |
| Supply Voltage (VM) | 6 V to 95 V (102 V abs max) |
| Gate Drive Current Settings | Adjustable (e.g., 250 mA / 750 mA) |
| Giao diện | Hardware (HW) variant - SPI-less |
| PWM Modes | 1-PWM, 3-PWM, 6-PWM |
| Built-in Bootstrap Diodes | Yes (3) |
| Current Shunt Amplifier | Integrated, 75-V common mode, adjustable gain |
| Protection Features | UVLO, OCP, OTP, gate-drive fault, ESD |
| Functional Safety | Quality-Managed (FMEDA + safety manual) |
| Nhiệt độ hoạt động | -40 C to +125 C |
| Hộp | WQFN-32 (RTV) 5 x 5 mm |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân DRV8350FHRTVR
| Chân 1 | GND — Ground |
| Chân 2 | VM — Power supply input (6 V to 95 V, 102 V abs max) |
| Chân 3 | GVDD — Gate-drive internal regulator output (decouple with cap) |
| Chân 4 | DVDD — Internal digital LDO output |
| Chân 5 | VREF — CSA reference input (sets output at 0-A current) |
| Chân 6 | SO — CSA output |
| Chân 7 | SP — CSA positive input |
| Chân 8 | SN — CSA negative input |
| Chân 9 | nSCS — Slew-rate / mode selection pin (HW variant) |
| Chân 10 | nFAULT — Fault indicator output (active low, open-drain) |
| Chân 11 | INHA — PWM input, phase A high-side |
| Chân 12 | INLA — PWM input, phase A low-side |
| Chân 13 | INHB — PWM input, phase B high-side |
| Chân 14 | INLB — PWM input, phase B low-side |
| Chân 15 | INHC — PWM input, phase C high-side |
| Chân 16 | INLC — PWM input, phase C low-side |
| Chân 17 | IDRIVE — Gate-drive current setting |
| Chân 18 | VDS — VDS monitor level setting (HW variant) |
| Chân 19 | DT — Dead-time programming |
| Chân 20 | MODE — PWM mode select (1-PWM / 3-PWM / 6-PWM) |
| Chân 21 | GHA — Gate drive output, phase A high-side |
| Chân 22 | SHA — Phase A switch node (high-side source) |
| Chân 23 | GLA — Gate drive output, phase A low-side |
| Chân 24 | GHB — Gate drive output, phase B high-side |
| Chân 25 | SHB — Phase B switch node (high-side source) |
| Chân 26 | GLB — Gate drive output, phase B low-side |
| Chân 27 | GHC — Gate drive output, phase C high-side |
| Chân 28 | SHC — Phase C switch node (high-side source) |
| Chân 29 | GLC — Gate drive output, phase C low-side |
| Chân 30 | CP — Charge-pump capacitor |
| Chân 31 | CPL — Charge-pump low-side pin |
| Chân 32 | EP — Exposed thermal pad (connect to GND) |
Ứng dụng tiêu biểu
DRV8350FHRTVR phù hợp cho 6 Áp dụngs: Cordless Power Tools, E-Bikes and E-Scooters, Drones and Multirotor UAVs, Industrial Pumps and Fans, Robotics and AGV Drive, Small Appliance BLDC Motors.
Cordless Power Tools
The DRV8350FHRTVR fits cordless power tools (drills, impact drivers, saws) where 18-V / 36-V / 48-V battery packs demand a 100-V class three-phase BLDC inverter. Its 102-V abs-max VM rating tolerates 12S Li-ion transients (50.4 V max) with substantial margin, and the integrated current-shunt amplifier with 75-V common-mode range supports high-side or low-side current sensing for torque control. Hardware interface eliminates SPI firmware overhead, reducing boot time. Functional Safety Quality-Managed status supports IEC 62841 tool safety compliance.
Được đề xuất
E-Bikes and E-Scooters
For e-bikes and e-scooters running 36-V / 48-V / 72-V battery packs, the DRV8350FHRTVR provides a robust 102-V three-phase inverter front-end driving external N-MOSFETs sized for 250-W to 1500-W traction motors. The integrated bootstrap diodes and charge pump sustain 100% duty high-side conduction during low-speed hill climbing, eliminating external bootstrap refresh circuits. Functional Safety Quality-Managed documentation helps with EN 15194 / ISO 26262 development for personal-mobility vehicles.
Được đề xuất
Drones and Multirotor UAVs
Brushless DC motors in multirotor drones (typically 6S to 12S Li-Po, 22 V to 50 V) benefit from the DRV8350FHRTVR's compact WQFN-32 (5x5 mm) footprint and 1-PWM / 3-PWM / 6-PWM modes for fast throttle response. The hardware-interface variant simplifies ESC firmware by removing SPI register programming latency. Current-shunt amplifier output feeds the MCU's ADC for RPM-pid loop closure. The 102-V abs-max supplies margin for 14S Li-Po packs (58.8 V) under regenerative braking spikes.
Được đề xuất
Industrial Pumps and Fans
Three-phase industrial pumps and fans (24 VDC to 72 VDC bus) leverage the DRV8350FHRTVR for sensorless or hall-sensored BLDC commutation in HVAC blowers, water pumps, and circulation fans. The hardware PWM interface accepts 1-PWM mode for simple square-wave commutation in cost-sensitive pump designs. Integrated protection (UVLO, OCP, OTP) eliminates external analog comparators. The functional-safety FMEDA supports IEC 61508 SIL-2 pump controllers in process industries.
Được đề xuất
Robotics and AGV Drive
Mobile robot drive motors (wheel hubs, AGV traction wheels) typically use 24-V / 48-V BLDC motors at 100-W to 1000-W levels. The DRV8350FHRTVR's 6-PWM mode and integrated current shunt enable field-oriented control (FOC) for precise torque and speed regulation in autonomous robots. Its WQFN-32 footprint keeps PCB area small for compact wheel modules. Functional Safety Quality-Managed status eases compliance for ISO 13849 (robot safety) and IEC 61508 (AGV SIL targets).
Được đề xuất
Small Appliance BLDC Motors
Appliances such as washing-machine drum motors, dishwasher pumps, refrigerator compressors, and range-hood fans use 100-V to 200-V BLDC motors where the DRV8350FHRTVR drives discrete MOSFETs at hundreds of watts. The integrated current-shunt amplifier simplifies torque-ripple measurement for closed-loop compressor control. Hardware interface removes SPI firmware dependency for cheap 8-bit MCUs. Functional Safety Quality-Managed status supports IEC 60335-1 household-appliance safety certification.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DRV8350FHRTVR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DRV8350HRTVR | DRV8350HRTVT | DRV8350FHRTAR |
|---|---|---|---|---|
| Package | WQFN-32 (RTV) 5x5 mm | WQFN-32 (RTV) 5x5 mm - same | WQFN-32 (RTV) 5x5 mm - same | WQFN-32 (RTV) 5x5 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage (abs max) | 102 V | 102 V | 102 V | 102 V |
| Interface | Hardware (HW) - SPI-less | Hardware (HW) | Hardware (HW) | Hardware (HW) |
| Functional Safety Collateral | Yes (FMEDA + Safety Manual) | No | No | Yes (FMEDA + Safety Manual) |
| Integrated Current Shunt Amplifier | Yes (75 V common mode) | Yes (75 V common mode) | Yes (75 V common mode) | Yes (75 V common mode) |
| PWM Modes | 1-PWM / 3-PWM / 6-PWM | 1-PWM / 3-PWM / 6-PWM | 1-PWM / 3-PWM / 6-PWM | 1-PWM / 3-PWM / 6-PWM |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
Bảo phân biệt quan trọng
- Functional Safety Quality-Managed status with FMEDA + safety manual (vsDRV8350HRTVR)
- 102-V abs-max VM rating with integrated charge-pump (vsDRV8323RSRGZR)
- Hardware interface eliminates SPI firmware overhead (vsDRV8350SRTVT)
Ghi chú thiết kế
Place the VM bulk capacitor (>=10 uF X7R ceramic plus 100 uF electrolytic) within 5 mm of the VM and GND pins to contain the high-di/dt switching current loop. Each phase switch-node (SHA/SHB/SHC) trace must be short and wide to minimize ringing; keep the bootstrap capacitor (>=0.1 uF X7R) within 2 mm of the SHx pin. The exposed thermal pad must be soldered to a continuous GND copper pour with at least 6 thermal vias (0.3 mm drill, 0.65 mm pitch) to a bottom-layer GND plane for adequate heatsinking at high switching currents.
Size the external MOSFETs so that their combined gate charge Qg (total for high+low) does not exceed the charge-pump and bootstrap refresh capacity of the DRV8350FHRTVR. For 100 kHz PWM with 1-PWM mode and 50 nC total Qg, the gate-drive current is approximately 5 mA average - well within the integrated gate-driver capability. For higher Qg FETs or faster switching, increase the IDRIVE setting. Estimated: gate-drive power loss = Qg * VGS * fsw; for 50 nC, 10 V, 50 kHz, the loss is 25 mW per phase, 75 mW total.
The DRV8350FHRTVR itself dissipates primarily gate-drive losses (negligible at < 100 mW) plus any shunt-sense resistor power passing through the package GND. The dominant thermal stress comes from external MOSFETs, not the gate driver. Nevertheless, the WQFN-32 (RTV) package has a theta-JA around 30-35 C/W on a standard 4-layer JEDEC board, so the gate-driver stays below 5 C rise even at 0.5 W. Estimated: at 0.5 W package dissipation and 35 C/W theta-JA, junction-to-ambient rise is 17.5 C - safe margin.
Do not float the MODE pin - tie it to GND, DVDD, or a high-impedance MCU GPIO to select 1-PWM / 3-PWM / 6-PWM. Leave the IDRIVE pin in its default setting for first-eval builds; lower IDRIVE settings reduce EMI but increase switching losses. Never apply voltage to the GHA/GHB/GHC outputs before VM is powered up - the high-side bootstrap capacitors will charge to undefined levels. Always include a 100-kohm pull-up on nFAULT to DVDD so the MCU can read the open-drain fault line.
Thông tin tuân thủ
RoHS and REACH compliance per TI product page. Not AEC-Q100 qualified - this is a general-purpose industrial gate driver, not an automotive-grade part. Functional Safety Quality-Managed documentation (FMEDA + safety manual) supports IEC 61508 / ISO 26262 system-level certification.
