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Texas Instruments DRV8312DDW
- Part No.:
- DRV8312DDW
- Manufacturer:
- Texas Instruments
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 44-PowerTSSOP (0.244", 6.20mm Width)
- Datasheet:
-
DRV8312DDW.pdf
- Description:
- IC HALF BRIDGE DRV 3.5A 44HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,247
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Product details
Overview
DRV8312DDW from Texas Instruments is a three-phase PWM motor driver IC with integrated 80-mΩ high- and low-side MOSFETs, supporting up to 50-V PVDD supply and delivering 3.5-A continuous phase current (6.5-A peak) in HTSSOP-44 (DDW) power-pad-down package. It enables BLDC and PMSM motor control in compact industrial drives and robotic actuators with programmable cycle-by-cycle current limiting and independent half-bridge supply/ground pins.
For engineers reviewing the DRV8312DDW datasheet, DRV8312DDW pinout, DRV8312DDW application, or DRV8312DDW equivalent, key selection considerations include thermal pad soldering requirements, bootstrap capacitor sizing for 500-kHz PWM operation, phase-current derating above 70°C ambient, and OC_ADJ resistor selection for 9.7-A nominal overcurrent threshold in cycle-by-cycle mode.
Technical Context
The DRV8312DDW implements three independent half-bridge gate drivers with intelligent cross-conduction prevention and bootstrap-based high-side drive requiring external BST-to-OUT capacitors (33–220 nF). Each half-bridge has dedicated PVDD_X, GVDD_X, GND_X, and AGND connections enabling shunt-based current sensing and isolated power domain management.
Its protection architecture includes dual-stage thermal monitoring (OTW at 125°C, OTSD at 150°C), programmable overcurrent detection via OC_ADJ resistor (22–200 kΩ range), and automatic bootstrap undervoltage recovery sequences triggered below ~10 kHz switching or insufficient off-time - all signaled through open-drain FAULT and OTW outputs pulled internally to VREG (3.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Phase Current | 3.5 A per phase - defines maximum sustained motor winding current without forced airflow or heatsink |
| RDS(on) (HS/LS) | 80 mΩ at TJ = 25°C - determines conduction loss and thermal rise under load; impacts heatsink sizing |
| PVDD Operating Range | 0–50 V DC - sets maximum motor bus voltage; absolute max transient rating is 70 V |
| PWM Switching Frequency | Up to 500 kHz - enables high-resolution torque control and reduced acoustic noise in servo applications |
| Junction Temperature Range | –40°C to +150°C - defines operational envelope; thermal shutdown occurs at 150°C with 25°C hysteresis |
| Overcurrent Threshold | Programmable 7.4–13.2 A via OC_ADJ resistor - allows tuning for motor inrush vs. fault robustness trade-off |
| Thermal Resistance (RθJA) | 24.5°C/W - measured on EVM layout; requires PCB thermal pad connection to ground plane for rated performance |
Pinout & Package
DRV8312DDW uses a 44-pin HTSSOP (DDW) package with exposed thermal pad on bottom side. The thermal pad must be soldered to a PCB landing pad connected via multiple vias to internal ground planes for effective heat dissipation. Package body size is 14.00 mm × 6.10 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GVDD_A / GVDD_B / GVDD_C | Gate-drive supply input per half-bridge | Provides 10.8–13.2 V bias for MOSFET gate drivers; decoupling required near each pin |
| PVDD_A / PVDD_B / PVDD_C | Main power supply input per half-bridge | Accepts 0–50 V motor bus voltage; requires local ceramic decoupling to GND_X |
| GND_A / GND_B / GND_C | Power ground return per half-bridge | Enables Kelvin sensing of shunt resistors; must be routed separately from AGND |
| BST_A / BST_B / BST_C | Bootstrap supply node per high-side driver | Requires external capacitor (33–220 nF) between BST_X and corresponding OUT_X |
| PWM_A / PWM_B / PWM_C | Digital input for half-bridge modulation | Accepts 2–3.6 V logic; controls high/low FET turn-on timing with 5.5 ns dead time enforced |
| RESET_A / RESET_B / RESET_C | Active-low enable/disable per half-bridge | Drives output to Hi-Z when asserted low; must be held high for normal operation |
| OC_ADJ | Analog programming input for overcurrent threshold | Resistor to AGND sets trip point (e.g., 27 kΩ → 9.7 A); tolerance affects accuracy ±20% |
| FAULT / OTW | Open-drain fault/warning outputs | Active-low signals pulled internally to VREG (3.3 V); external 4.7-kΩ pullup needed for 5-V logic compatibility |
| AGND | Analog reference ground | Reference for OC_ADJ, VREG, and analog comparators; must be star-connected to minimize noise |
| VREG | Internal 3.3-V regulator output | Supplies internal logic and pulls FAULT/OTW; requires 0.1-μF capacitor to AGND |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 80-mΩ MOSFETs | Reduces external component count and PCB area while enabling up to 97% efficiency at 400 kHz |
| Independent half-bridge supplies | Allows differential shunt sensing and supports mixed-voltage motor phases without level-shifting |
| Programmable cycle-by-cycle current limit | Prevents shutdown during motor startup transients while maintaining protection against short-circuit faults |
| Bootstrap undervoltage recovery | Automatically inserts low-side on-time to recharge BST capacitors when duty cycle or frequency compromises gate drive |
| No external snubber or Schottky diodes | Reduces BOM cost and layout complexity by integrating body-diode conduction path and shoot-through prevention |
Applications
| Industrial BLDC Drives | Robotic Joint Actuators |
|---|---|
Use Scenario: Compact 24–48 V brushless motor control in conveyor modules and automated valves. IC Role / Device Role / Timing Role: Three-phase gate driver with integrated power stage, managing commutation timing and current regulation per phase. Use Value: Eliminates discrete MOSFETs and gate drivers, reducing board space by >40% versus discrete solutions while maintaining 3.5-A continuous output capability. |
Use Scenario: Torque-controlled joint motors in collaborative robots requiring precise current feedback and fast fault response. IC Role / Device Role / Timing Role: Motor driver with programmable overcurrent threshold and OTW warning signal for thermal margin management. Use Value: Enables real-time current limiting during dynamic load changes without system reset, improving motion smoothness and safety compliance. |
| PMSM Inverter Modules | Hobbyist/Educational Motor Kits |
Use Scenario: Low-cost inverter boards for permanent magnet synchronous motors in HVAC blowers and pump systems. IC Role / Device Role / Timing Role: High-efficiency three-phase bridge controller with independent PVDD/GVDD domains for flexible power staging. Use Value: Supports direct integration with 50-V bus rails and delivers >95% efficiency at 2-A load, reducing heatsink requirements. |
Use Scenario: Entry-level motor driver evaluation platforms for university labs and prototyping workshops. IC Role / Device Role / Timing Role: Fully featured motor driver with visible thermal pad, accessible OC_ADJ and FAULT pins for hands-on fault analysis. Use Value: Provides observable protection behavior (e.g., OTW assertion at 125°C) and configurable current limits for teaching motor control fundamentals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8323RSRTVT | 40-V max PVDD, 5-A continuous, SPI interface, integrated current sense amplifiers | Requires microcontroller SPI communication; eliminates need for external op-amps but adds firmware dependency | Choose for designs needing digital diagnostics and closed-loop current feedback without external sensing circuitry |
| MP6532GQ-P | 60-V max PVDD, 4-A continuous, no programmable OC_ADJ, fixed 10-A overcurrent threshold | Lacks OC_ADJ pin and cycle-by-cycle mode; uses internal comparator only, limiting tuning flexibility | Choose for cost-sensitive applications where fixed overcurrent threshold suffices and bootstrap capacitor management is simplified |
Compared with DRV8312DDW, DRV8323RSRTVT offers higher integration and digital configurability at the cost of added software overhead, while MP6532GQ-P trades programmability for lower BOM count and simpler analog interface - both require PCB redesign due to non-pin-compatible packages and differing pin functions.
Availability
DRV8312DDW is available at Aetrix Electronics and suitable for industrial BLDC drives, robotic joint actuators, and PMSM inverter modules requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp-up.
Supply support for DRV8312DDW 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 company specializing in analog and embedded processing technologies, with leadership in motor control, power management, and precision analog ICs.
The DRV83x2 product line was designed specifically for high-efficiency, compact three-phase motor control in space-constrained industrial and robotics applications - emphasizing thermal performance, integrated protection, and flexible current-sensing architecture.
FAQ
What is the correct thermal pad soldering requirement for DRV8312DDW?
The DRV8312DDW thermal pad must be soldered to a PCB landing pad connected via ≥4 thermal vias (0.3-mm diameter) to an internal ground plane. TI specifies this as mandatory for achieving the 24.5°C/W RθJA rating; omitting the pad connection degrades thermal performance by >50% and risks premature thermal shutdown under 3.5-A load.
How does the OC_ADJ resistor value affect DRV8312DDW overcurrent protection?
The OC_ADJ resistor to AGND sets the nominal overcurrent threshold: 27 kΩ yields 9.7 A, 22 kΩ yields 11.6 A, and 19 kΩ yields 13.2 A. This adjustment directly configures the cycle-by-cycle current limit in CBC mode. Note that device-to-device variation can cause ±20% threshold deviation, so the DRV8312DDW is intended for protection-not precision current regulation.
Can DRV8312DDW operate without external bootstrap capacitors?
No. DRV8312DDW requires external bootstrap capacitors (33–220 nF) between each BST_X pin and its corresponding OUT_X pin to sustain high-side gate drive. Omitting them prevents high-side FET turn-on, resulting in single-ended (low-side-only) operation and immediate FAULT assertion due to bootstrap undervoltage. Ceramic X7R types are recommended for stability.
What is the minimum PWM pulse width supported by DRV8312DDW?
The DRV8312DDW specifies a 50-ns minimum on-time for the low-side FET to ensure reliable bootstrap capacitor charging. Shorter pulses risk insufficient BST voltage buildup, triggering bootstrap undervoltage protection and forcing automatic recovery cycles. This constraint applies regardless of switching frequency and must be respected in both hardware design and firmware PWM generation.
How does the DRV8312DDW handle overtemperature events?
The DRV8312DDW implements two-stage thermal protection: OTW asserts low at 125°C (±10°C) as a warning, allowing firmware to reduce load; if temperature reaches 150°C, OTSD triggers latching shutdown with 25°C hysteresis. Recovery requires RESET_A/B/C reassertion after cooling. The thermal pad soldering quality directly impacts the junction-to-board resistance (RθJB = 5.5°C/W), making it critical for OTW timing accuracy.
DRV8312DDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 44-PowerTSSOP (0.244", 6.20mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Half Bridge (3)
- Applications:
- DC Motors, General Purpose
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- Power MOSFET
- Rds On (Typ):
- 80mOhm LS, 80mOhm HS
- Current - Output / Channel:
- 3.5A
- Current - Peak Output:
- 6.5A
- Voltage - Supply:
- 10.8V ~ 13.2V
- Voltage - Load:
- 0V ~ 52.5V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit, Status Flag
- Fault Protection:
- Current Limiting, Over Temperature, Short Circuit, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-HTSSOP
DRV8312DDW FAQ
1.How can I place an order for DRV8312DDW through Aetrix?
Please submit a Request for Quotation (RFQ) for DRV8312DDW 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 DRV8312DDW reliable?
The price and inventory of DRV8312DDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DRV8312DDW is usually 5 days.
3.What payment methods are accepted for DRV8312DDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DRV8312DDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DRV8312DDW?
DRV8312DDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DRV8312DDW 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 DRV8312DDW?
For technical support, including DRV8312DDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DRV8312DDW requirements.
6.How does Aetrix verify that DRV8312DDW is sourced from the original manufacturer or authorized distributors?
All DRV8312DDW 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 DRV8312DDW meets industry standards.
7.What is the process for return or replacement of DRV8312DDW?
All DRV8312DDW units undergo pre-shipment inspection (PSI). If there is an issue with DRV8312DDW, 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 DRV8312DDW part is unused and in its original packaging.
Return procedure for DRV8312DDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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