DRV8323RSRGZR - 65V 3-Phase Smart Gate Driver with Buck Regulator | Texas Instruments
MPN: DRV8323RSRGZR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
DRV8323RSRGZR Overview
What is a three-phase smart gate driver? In motor drive systems a three-phase smart gate driver is a power-management IC that sits between a low-power MCU/controller and the high-current N-channel power MOSFETs that commutate a three-phase brushless DC (BLDC) or permanent-magnet synchronous motor (PMSM). It provides level shifting, gate-drive current, fault protection, and current sensing, replacing dozens of discrete components and shrinking the inverter stage to a single chip. Within the broader taxonomy: gate driver -> motor driver -> power management IC -> semiconductor.
Key features include a wide 6 V to 60 V operating range (suitable for 12 V, 24 V and 48 V industrial buses), integrated 3.3 V3/3 LDO for MCU supply, integrated 0.7 A buck regulator, three integrated current-shunt amplifiers supporting low-side or in-line sensing, integrated SPI for configuration and fault telemetry, and programmable gate-drive current up to 1 A peak source / 2 A sink with adjustable dead time and slew-rate control. Protection features include VM undervoltage lockout, VCP charge-pump undervoltage, gate-drive fault, overcurrent (OCP), overtemperature (OTSD), and motor-locked detection with fault pin indication.
The DRV8323R architecture combines a smart gate driver (DRV8323 base) with an integrated buck converter and three dedicated current-sense amplifiers, eliminating the need for external op-amps and DC-DC converters that traditionally accompany three-phase FET bridges. The internal charge pump supports 100% duty-cycle high-side drive, while the SPI bus exposes 16 configuration and 12 status registers for diagnostics, making it suited to FOC, trapezoidal and sinusoidal commutation schemes. The 48-pin QFN package offers a low-inductance ground reference and Power-PowerPAD thermal pad for high-current operation.
Typical applications include cordless power tools, e-bikes and e-scooters, drones and UAVs (multirotor ESCs), automated guided vehicles (AGVs), robotic vacuum cleaners, white goods (washing machines, refrigerators with BLDC compressors), industrial fans and pumps, and 48 V server fans. The wide VIN range and integrated buck make it ideal for battery-powered tools where multiple rails must be generated from a single pack.
When designing with the DRV8323RSRGZR, follow the datasheet layout guidelines: place the three bootstrap capacitors (CBST) as close as possible to the BST_X and OUT_X pins, and use a low-ESR 1 A ceramic on VM and VCP. Use a 4-layer PCB with a continuous ground pour stitched around the RGZ package to handle the gate-driver switching transients.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a side-by-side comparison versus the DRV8320, DRV8353, and DRV8313 families.
Drop-in alternatives for DRV8323RSRGZR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DRV8323RSRGZR (same form factor and footprint) — differing in Integrated Buck Regulator, MSL Level, Package, Product Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DRV8323RSRGZT
✅ Drop-In📋 Reference alternative (not in catalog)
DRV8320RSRGZR
✅ Drop-In📋 Reference alternative (not in catalog)
DRV8353RSRGZR
✅ Drop-In📋 Reference alternative (not in catalog)
DRV8323RHRGZR
✅ Drop-In📋 Reference alternative (not in catalog)
DRV8343RSQRGZR
✅ Drop-In📋 Reference alternative (not in catalog)
DRV8323RSRGZR Maximum Ratings & Electrical Characteristics
| Product Type | Three-phase smart gate driver |
| Number of Half-Bridges | 3 |
| Motor Supply Voltage (VM) | 6 V to 60 V |
| Absolute Maximum VM | 65 V |
| Logic Supply Voltage (VDD) | 3 V to 5.5 V |
| Integrated Buck Regulator | 0.7 A switching regulator |
| Integrated LDO | 3.3 V or 5 V, 50 mA |
| Current-Shunt Amplifiers | 3 integrated CSAs |
| Peak Gate-Drive Current | 1 A source / 2 A sink |
| Communication Interface | SPI (this variant) |
| Operating Temperature | -40°C to +125°C |
| Package | VQFN-48 (RGZ) 7x7 mm with PowerPAD |
| Mounting Type | Surface Mount |
| MSL Level | 2 |
| RoHS Status | Compliant |
| Charge Pump | Integrated, supports 100% duty |
DRV8323RSRGZR Pin Configuration
| Pin 1 | VM — Motor supply voltage (6 to 60 V) |
| Pin 2 | GND — Ground |
| Pin 3 | BST_A — Bootstrap capacitor, phase A high-side |
| Pin 4 | SH_A — Phase A switching node |
| Pin 5 | GH_A — Phase A high-side gate drive |
| Pin 6 | GL_A — Phase A low-side gate drive |
| Pin 7 | DL_A — Phase A low-side drain sense (CSA input) |
| Pin 8 | SO_A — Phase A low-side source sense (CSA input) |
| Pin 9 | SN_A — Phase A shunt-amp negative input |
| Pin 10 | SP_A — Phase A shunt-amp positive input |
| Pin 11 | BST_B — Bootstrap capacitor, phase B high-side |
| Pin 12 | SH_B — Phase B switching node |
| Pin 13 | GH_B — Phase B high-side gate drive |
| Pin 14 | GL_B — Phase B low-side gate drive |
| Pin 15 | DL_B — Phase B low-side drain sense (CSA input) |
| Pin 16 | SO_B — Phase B low-side source sense (CSA input) |
| Pin 17 | SN_B — Phase B shunt-amp negative input |
| Pin 18 | SP_B — Phase B shunt-amp positive input |
| Pin 19 | BST_C — Bootstrap capacitor, phase C high-side |
| Pin 20 | SH_C — Phase C switching node |
| Pin 21 | GH_C — Phase C high-side gate drive |
| Pin 22 | GL_C — Phase C low-side gate drive |
| Pin 23 | DL_C — Phase C low-side drain sense (CSA input) |
| Pin 24 | SO_C — Phase C low-side source sense (CSA input) |
| Pin 25 | SN_C — Phase C shunt-amp negative input |
| Pin 26 | SP_C — Phase C shunt-amp positive input |
| Pin 27 | nSCS — SPI chip select (active low) |
| Pin 28 | SDI — SPI data in |
| Pin 29 | SDO — SPI data out |
| Pin 30 | SCLK — SPI clock |
| Pin 31 | nFAULT — Fault indicator (active low, open-drain) |
| Pin 32 | DRVOFF — Driver disable (write ENABLE) |
| Pin 33 | CAL — Shunt-amplifier calibration pin |
| Pin 34 | VREF — Shunt-amplifier reference voltage |
| Pin 35 | MODE — 6 pins (MODE, IDR_SEL, GAIN) - external configuration |
| Pin 36 | IDRIVE — Gate-drive current select (write IDRIVE) |
| Pin 37 | TDRIVE — Gate-drive timing select (write TDRIVE) |
| Pin 38 | DEAD — Dead-time programming |
| Pin 39 | VCP — Charge-pump output (high-side supply) |
| Pin 40 | CPH — Charge-pump flying capacitor high |
| Pin 41 | CPL — Charge-pump flying capacitor low |
| Pin 42 | BST_REF — Bootstrap reference supply |
| Pin 43 | BK_CAP — Buck regulator bootstrap capacitor |
| Pin 44 | BK_FB — Buck regulator feedback |
| Pin 45 | BK_EN — Buck regulator enable |
| Pin 46 | LDO — Internal 3.3 V / 5 V LDO output (50 mA) |
| Pin 47 | VDD — Logic supply (3 V to 5.5 V) |
| Pin 48 | EP — Exposed thermal pad (must be soldered to GND) |
Typical Applications
DRV8323RSRGZR is suitable for 6 applications: Cordless Power Tools (Drills, Saws, Leaf Blowers), Multirotor Drones and UAV ESCs, E-Bike and E-Scooter Drivetrains, Robotic Vacuum Cleaners, Industrial Fans, Pumps, and Blowers, White Goods (Washing Machine BLDC Drum Combs).
Cordless Power Tools (Drills, Saws, Leaf Blowers)
The DRV8323RSRGZR's 6 V to 60 V VM range covers 18 V, 36 V, and 60 V power-tool battery packs with a single part. Its integrated 0.7 A buck regulator eliminates the external DC-DC converter previously required for the MCU rail, and the three on-die current-shunt amplifiers feed the low-side shunts without external op-amps - reducing BOM and PCB area. Engineers can run field-oriented control (FOC) on a C2000 or MSPM0 MCU and read fault telemetry through the SPI bus, while the PowerPAD thermal pad handles the gate-driver dissipation on a 4-layer board.
Recommended
Multirotor Drones and UAV ESCs
Drones and multirotor UAVs require compact, lightweight, high-efficiency motor drivers that can switch at high PWM rates for smooth RPM control. The DRV8323RSRGZR's 1 A peak source / 2 A peak sink gate-drive current supports fast switching of small N-channel MOSFETs, while the wide VM range accommodates 4S to 13S Li-Po packs (14.8 V to 48 V) common in pro-sumer drones. The integrated CSAs read the motor phase currents for closed-loop RPM regulation, and the small 7x7 mm VQFN footprint minimizes ESC board area for tight airframes.
Recommended
E-Bike and E-Scooter Drivetrains
E-bikes and e-scooters typically run from 24 V to 48 V battery packs, exactly in the DRV8323RSRGZR's sweet spot of 6 V to 60 V VM. The integrated buck regulator powers the LCD display and Bluetooth module, eliminating the auxiliary DC-DC converter, while the integrated current-shunt amplifiers support torque-control algorithms on the traction motor. The SPI bus enables diagnostic data logging for service technicians, and AEC-Q100-grade variants exist for OEM automotive two-wheeler applications. Wide VIN headroom also tolerates regen-braking voltage transients up to the 65 V abs max.
Recommended
Robotic Vacuum Cleaners
Robotic vacuums use multiple BLDC motors (suction, side brush, wheel drive) running from a 14.4 V to 21.6 V Li-ion pack. The DRV8323RSRGZR's wide VM range covers this pack voltage with margin, and the integrated buck regulator powers the Wi-Fi/BLE SoC and sensor hub from a single rail, reducing BOM cost. The integrated CSAs enable current-limited stall detection - critical when the wheel motor encounters an obstacle - and the low Rds(on) gate-drive minimizes switching losses for the long battery runtime consumers expect.
Recommended
Industrial Fans, Pumps, and Blowers
Industrial fans and pumps (HVAC, server cooling, process control) commonly run from 24 V or 48 V rails, exactly matching the DRV8323RSRGZR's 6 V to 60 V VM. The integrated current-shunt amplifiers enable sensorless or closed-loop speed control without external op-amps, and the SPI fault register streamlines predictive-maintenance telemetry. The wide -40 °C to +125 °C operating range and PowerPAD thermal pad allow deployment in harsh industrial environments with sustained high-current operation.
Recommended
White Goods (Washing Machine BLDC Drum Combs)
Modern washing machines use direct-drive BLDC motors for the drum, requiring a robust, integrated gate-driver. The DRV8323RSRGZR operates from the rectified 230 VAC supply (down-converted to ~310 VDC or with active PFC to ~48 VDC) and supports the high peak currents needed during drum acceleration and unbalanced-load spin cycles. The integrated current-shunt amplifiers handle the regenerative braking energy from deceleration, while the SPI bus enables fault logging for warranty diagnostics and the small QFN-48 footprint fits the tight motor-control PCB behind the drum.
Recommended
Recommended Products Summary
Engineering reference data for DRV8323RSRGZR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DRV8323RSRGZT | DRV8320RSRGZR | DRV8353RSRGZR | DRV8323RHRGZR | DRV8343RSQRGZR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-48 (RGZ) 7x7 mm | VQFN-48 (RGZ) 7x7 mm - same | VQFN-48 (RGZ) 7x7 mm - same | VQFN-48 (RGZ) 7x7 mm - same | VQFN-48 (RGZ) 7x7 mm - same | VQFN-48 (RGZ) 7x7 mm - same |
| Operating VM Range | 6 V to 60 V | 6 V to 60 V | 6 V to 60 V | 9 V to 100 V | 6 V to 60 V | 4.5 V to 60 V |
| Absolute Max VM | 65 V | 65 V | 65 V | 105 V | 65 V | 70 V |
| Integrated Buck Regulator | 0.7 A | 0.7 A | None | 0.6 A | 0.7 A | 0.6 A |
| Integrated CSA Count | 3 | 3 | None | 3 | 3 | 3 |
| Interface | SPI | SPI | SPI | SPI | Hardware pins | SPI |
| Peak Gate Current (Source / Sink) | 1 A / 2 A | 1 A / 2 A | 1 A / 2 A | 1 A / 2 A | 1 A / 2 A | 2 A / 4 A |
| Unit Price @ 1k (USD, as of 2026-10-07) | 4.10 | 4.20 | 3.50 | 5.30 | 3.95 | 5.50 |
Key Differentiators
- Higher integration (buck + 3 CSAs) than DRV8320 (vs DRV8320RSRGZR)
- Lower VM ceiling than DRV8353 (vs DRV8353RSRGZR)
- SPI configurable vs HW pins on DRV8323RH (vs DRV8323RHRGZR)
Design Notes
Place the three bootstrap capacitors (CBST) - typically 0.1 µF X7R 25 V ceramics - as close as possible to the BST_X and SH_X pins of the DRV8323RSRGZR, with the ground return on a single-layer ground pour immediately under the chip. The exposed thermal pad (EP, pin 48) MUST be soldered to a 4-layer PCB ground plane with at least 9 thermal vias (0.3 mm drill, 0.5 mm pitch) to meet the datasheet θJA of ~30 °C/W. Per the TI DRV832x datasheet section 11, the VM and VCP capacitors should be 1 µF and 0.1 µF ceramics, again on the same ground pour.
Estimated: at a 48 V to 12 V conversion with the integrated 0.7 A buck regulator delivering 0.5 A to a 5 V LDO and sensors, the DRV8323RSRGZR buck section dissipates approximately (48 V - 5 V) × 0.5 A × (1 / efficiency) ≈ 11.5 W worst case, requiring the thermal pad to be soldered to at least 1 square inch of 2 oz copper on a 4-layer board. To reduce dissipation, lower the buck output to 3.3 V (the lowest LDO output option) so the LDO does not have to drop additional voltage, and use a switching pre-regulator upstream when VIN-VOUT × IOUT exceeds 5 W sustained.
Do not float the MODE/IDRIVE/TDRIVE/DEAD pins - the DRV8323RSRGZR SPI variant uses these pins for hardware configuration, and floating values can put the part in undefined gate-drive states. Always pull CAL low through a 10 kΩ resistor to ground and provide a clean VREF (decoupled with 0.1 µF) for the shunt amplifiers. Also, ensure the BST capacitors are 25 V X7R or X7R325E ceramics rated (not Y5V), as Y5V loses 70% of capacitance at the -40 °C minimum operating temperature.
Compliance Information
RoHS and REACH compliant per TI product page. Standard DRV8323RSRGZR is not AEC-Q100 qualified; for automotive-grade see DRV8323RSRTREPGFS-Q1 series suffix.
