DRV8323
Smart 3-Phase BLDC Gate Driver · 6-60V · Triple Shunt Amps · SPI/HW Config · Smart Gate Drive · QFN-48 (7×7mm) · Texas Instruments
| Part Number | DRV8323 |
|---|---|
| Manufacturer | Texas Instruments |
| Device Type | Smart 3-Phase BLDC Gate Driver |
| Supply Voltage | 6 V – 60 V |
| Gate Drive Sink Current | 1 A (peak) |
| Gate Drive Source Current | 2 A (peak) |
| Current Shunt Amplifiers | 3 × independent, programmable gain (1x–40x) |
| Configuration Modes | SPI or Hardware (HW) pin-configurable |
| Integrated Buck Regulator | 600 mA step-down |
| Smart Gate Drive | Adaptive slew rate control for EMI reduction |
| Package | QFN-48 (7 × 7mm) |
| Operating Temperature | −40°C to +125°C |
| Supply Voltage Range (VM) | 6 V – 60 V |
|---|---|
| Gate Drive Voltage | 7 V – 14 V (adjustable) |
| Peak Gate Drive Current | 1 A sink / 2 A source (per channel) |
| Shunt Amplifier Gain Options | 5, 10, 20, 40 V/V (SPI mode) |
| Shunt Amplifier Bandwidth | 200 kHz (Gain=40), 600 kHz (Gain=5) |
| Buck Converter Output | 600 mA continuous, 3.3V/5V selectable |
| VDS Over-Current Threshold | 0.06 V – 2 V (configurable via SPI) |
| VSENSE Over-Current Threshold | 0.25 V (fixed), gain-scalable |
| Sleep Mode Current | < 10 µA |
| Thermal Protection | Warning at ~135°C, shutdown at ~170°C |
| Configuration Interface | SPI (4-wire, Mode 0/3) or Hardware mode |
|---|---|
| Gate Drive Inputs | 6 × PWM (INHx/INLx), independent control |
| Fault Output | nFAULT pin (open-drain) with SPI fault registers |
| Gate Drive Modes | Smart gate drive or fixed slew rate (SPI selectable) |
| OCP Types | VDS monitor + VSENSE comparator, cycle-by-cycle |
| Dead-Time Control | Programmable via SPI or fixed in HW mode |
| Shunt Amp Outputs | 3 × analog (SOA, SOB, SOC) for direct ADC read |
| 1xPWM Mode | Single PWM per half-bridge with automatic handshake |
| DVDD LDO | 3.3V / 30 mA output for external logic supply |
| Part Number | DRV8323 |
|---|---|
| Orderable Qty | 1 pcs – 10,000+ pcs |
| Price (1–9 pcs) | Contact for quote |
| Price (10–99 pcs) | Contact for quote |
| Price (100–499 pcs) | Contact for quote |
| Price (500+ pcs) | Best pricing available |
| Lead Time (stock) | 3–7 business days |
| Packaging | Tape & Reel (T&R) |
| RoHS Compliant | Yes (Pb-free) |
Please confirm exact parameters with manufacturer datasheet.
The DRV8323 from Texas Instruments is a next-generation smart 3-phase BLDC gate driver that combines advanced protection features with flexible configuration in a compact QFN-48 (7×7mm) package. Operating from 6V to 60V, it delivers 1A sink and 2A source peak gate drive currents, making it ideal for driving modern low-Rds(on) MOSFETs in Field-Oriented Control (FOC) drone ESC designs. The standout feature is TI's Smart Gate Drive technology, which dynamically adjusts gate drive current to minimize EMI while maintaining efficient MOSFET switching.
Unlike its predecessor DRV8301, the DRV8323 integrates three independent current shunt amplifiers with programmable gains from 5× to 40× (SPI mode) or fixed 20× (HW mode). This triple-shunt architecture enables full three-phase current sensing without current reconstruction — critical for sensorless FOC algorithms that require precise, simultaneous measurement of all three phase currents. The amplifier outputs (SOA, SOB, SOC) connect directly to the MCU ADC, eliminating external op-amps and reducing BOM cost for compact ESC layouts.
The DRV8323 supports dual configuration modes: full SPI register control for maximum flexibility, or hardware (HW) mode via pin strapping for simpler designs. Protection is comprehensive with VDS over-current monitoring on each MOSFET (configurable threshold 0.06–2V) and VSENSE over-current detection via the shunt amplifiers. The integrated 600mA buck regulator with selectable 3.3V or 5V output powers the MCU, while the DVDD LDO provides 3.3V/30mA for external logic. Combined with programmable dead-time and 1× PWM mode (automatic high/low handshake), the DRV8323 minimizes the MCU timer resources required for motor control.
For next-generation drone ESC designs, the DRV8323 is the recommended choice when compact size, low EMI, and sensorless FOC capability are priorities. The QFN-48 package with exposed thermal pad enables miniaturized ESC designs for racing drones and compact multirotors. Smart Gate Drive's adaptive current control significantly reduces radiated EMI — an important consideration for drones carrying sensitive GPS/GNSS receivers and video transmission equipment. The −40°C to +125°C operating range ensures reliable operation in demanding environments.
Key Features
- Smart Gate Drive technology — adaptive slew rate minimizes EMI without sacrificing efficiency
- Triple independent shunt amplifiers — full 3-phase current sensing for sensorless FOC
- Dual configuration modes — SPI (full control) or HW (pin-strap) for design flexibility
- VDS + VSENSE over-current protection — dual-layer protection for MOSFET safety
- 1× PWM mode — automatic high/low handshake reduces MCU timer requirements
- Integrated 600mA buck + 3.3V DVDD LDO — complete power solution from motor bus
- Programmable gain (1×–40×) with 5 gain settings — precise current measurement
- Compact QFN-48 (7×7mm) with thermal pad — ideal for miniaturized drone ESC
Need DRV8323 for Your Next-Gen FOC Drone ESC?
Get competitive pricing and fast delivery from UAVCHIP. Stock available for immediate shipment worldwide.
The DRV8323 is an active production part from Texas Instruments with growing adoption in drone ESC designs. UAVCHIP maintains inventory with 3–7 business day lead time for standard quantities. The QFN-48 package requires proper PCB layout — the exposed thermal pad must connect to a large ground plane through a 5×5 array of thermal vias. For SPI mode operation, ensure a dedicated SPI bus is available on your MCU (the DRV8323 cannot share SPI with other devices due to timing constraints). We also stock the DRV8323R variant for daisy-chain applications. For volume orders exceeding 500 pcs, contact our procurement team for allocation. Complementary components including CSD88584Q5DC NexFET power blocks and precision shunt resistors are available for complete ESC BOM solutions.