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Analog Devices Inc./Maxim Integrated TMC6140-LA
- Part No.:
- TMC6140-LA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
TMC6140-LA.pdf
- Description:
- 3-PHASE MOSFET GATE DRIVER FOR P
- Quantity:
- Payment:
- Shipping:
Inventory:1,441
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Product details
Overview
TMC6140-LA from TRINAMIC Motion Control is a fully integrated 3-phase MOSFET gate driver IC for BLDC and PMSM servo motors, supporting external MOSFETs up to 100 A coil current, operating from 5–30 V DC supply, delivering 0.5 A or 1.0 A gate drive strength, and integrating three bottom shunt amplifiers for current sensing - used in industrial drives, robotics, and battery-powered power tools.
For engineers reviewing the TMC6140-LA datasheet, TMC6140-LA pinout, TMC6140-LA application, or TMC6140-LA equivalent, key selection considerations include its QFN-36 (5 mm × 6 mm) package, dual low-power standby modes (0.25 mA), integrated 3.3 V/0.5 A switching regulator with internal Schottky diode, UART-based diagnostics output, and analog-programmable short-circuit detection.
Technical Context
The TMC6140-LA implements a dedicated 3-phase gate driver architecture with break-before-make logic, configurable DRV_STRONG (0.5 A/1.0 A) and LOWGAIN (×20/×50) settings, and independent high-side (HSU/HSV/HSW) and low-side (LSU/LSV/LSW) outputs referenced to phase center points (U/V/W). Its internal 3.3 V buck converter (680 kHz, 0.5 A) powers digital I/O and external microcontrollers, while the V10 linear regulator (10 V, 60 mA) supplies gate drivers.
Three bottom-shunt amplifiers (SO1/SO2/SO3) provide differential current sensing with bias at VCC_IO/2 and gain set by LOWGAIN; SH_SET enables analog threshold programming for short-circuit protection. Diagnostics are delivered via DIAG pin as UART-TxD (9.6 kHz baud), encoding OT, UVVS, OTPW, S2G, S2VS, and phase-specific short flags - with error clearing requiring ENABLE toggle (>5 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5 V to 30 V DC - supports wide-input industrial and battery-operated motor systems without external pre-regulation. |
| Gate Drive Strength | 0.5 A or 1.0 A (selectable via DRV_STRONG pin) - enables optimization of MOSFET switching slope and EMI performance. |
| Shunt Amplifier Gain | ×20 or ×50 (selectable via LOWGAIN pin) - allows precise current sensing across 1–100 A motor ranges using standard sense resistors. |
| Standby Current | 0.25 mA in Low Power Mode 0 - enables ultra-low-power operation during idle or sleep states in portable equipment. |
| Integrated Regulators | 3.3 V/0.5 A buck (with internal Schottky diode ≤100 mA) + 10 V/60 mA linear (V10) - powers MCU, logic, and gate drivers from single VS rail. |
| Diagnostics Interface | UART-TxD on DIAG pin (9.6 kHz, 64-bit frame) - delivers real-time fault data (OT, UVVS, S2G, etc.) without requiring additional communication hardware. |
| Short Detection | Analog-programmable via SH_SET voltage (0–3 V) - sets per-phase short-to-ground threshold without firmware changes. |
Pinout & Package
Package: QFN-36, 5 mm × 6 mm, 0.5 mm pitch, exposed thermal pad (GNDD/GDNP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS (11) | Motor supply input | Main power rail (5–30 V); feeds all internal regulators and must be decoupled near pin with low-ESR capacitors. |
| V10 (33) | 10 V gate driver supply | Output of internal linear regulator; powers HS/LS drivers and requires ≥4.7 µF ceramic capacitor to GND. |
| CU/CV/CW (9,2,34) | Bootstrap capacitor connections | Positive terminals for U/V/W phase bootstrap networks; each connects to respective HS gate via 470 nF–1 µF capacitor. |
| HSU/HSV/HSW (8,3,35) | High-side gate drivers | Outputs driving gates of upper MOSFETs; referenced to U/V/W phase centers (pins 7,4,36), not GND. |
| LSU/LSV/LSW (6,5,1) | Low-side gate drivers | Outputs driving gates of lower MOSFETs; referenced to GND; support direct PWM control via UL/VL/WL inputs. |
| SO1/SO2/SO3 (22,23,25) | Shunt amplifier outputs | Analog outputs biased at VCC_IO/2; deliver amplified (×20/×50) differential voltage across RS1/RS2/RS3 sense resistors. |
| DIAG (20) | Diagnostics output | Open-drain UART-TxD signal encoding 10 fault flags; doubles as INTR for interrupt-driven error handling. |
| ENABLE (31) | Driver enable control | Active-high input; disables all gate outputs when low and clears DIAG faults after >5 ms low pulse. |
Key Features
| Feature | Design Value |
|---|---|
| Triple bottom-shunt amplifiers | Configurable gain (×20/×50) and shared negative input (nSI) enable accurate, noise-immune 3-phase current measurement with minimal external components. |
| Programmable short-circuit protection | Analog SH_SET input allows dynamic threshold adjustment (0–3 V) for S2G detection - critical for varying motor load and temperature conditions. |
| Dual low-power standby modes | Mode 0 (0.25 mA) shuts down 3.3 V regulator; Mode 1 retains it - enabling flexible power management for battery life vs. wake-up latency trade-offs. |
| Integrated 3.3 V/0.5 A buck converter | Includes internal Schottky diode (≤100 mA) and supports external diode for higher loads - eliminates need for separate LDO or DC/DC for MCU and logic rails. |
| UART-based diagnostics | 64-bit frame (9.6 kHz) on single DIAG pin delivers OT, UVVS, S2G, and phase-specific faults - reduces BOM count and simplifies host-side fault parsing. |
Applications
| Industrial Drives | Power Tools |
|---|---|
|
Use Scenario: Closed-loop torque/speed control in CNC spindles and conveyor drives requiring robust overcurrent and thermal protection. IC Role / Device Role / Timing Role: 3-phase gate driver coordinating six external MOSFETs, with real-time current feedback via SO1–SO3 and fault reporting via DIAG UART. Use Value: Enables fast commutation (<100 A) and reliable shutdown during overload events without external ADC or fault logic. |
Use Scenario: High-torque, variable-speed operation in cordless drills and angle grinders powered by 18–36 V Li-ion packs. IC Role / Device Role / Timing Role: Gate driver managing high-side/low-side switching with adaptive slope control (DRV_STRONG + RG) to minimize MOSFET stress and battery ripple. Use Value: Dual standby modes extend runtime; integrated 3.3 V regulator powers tool MCU and sensors from same battery rail. |
| Robotics Actuators | Battery-Operated Pumps |
|
Use Scenario: Precise position control in collaborative robot joints using PMSM motors with field-oriented control (FOC). IC Role / Device Role / Timing Role: Current-sensing gate driver feeding phase currents to FOC algorithm; DIAG provides stall/short detection for safety-critical motion stops. Use Value: Analog shunt outputs eliminate need for isolated current sensors; programmable SH_SET adapts protection to varying payload inertia. |
Use Scenario: Continuous-duty fluid transfer in portable medical or agricultural pumps running from 12–24 V sealed lead-acid or LiFePO₄ batteries. IC Role / Device Role / Timing Role: Motor driver with UVVS monitoring and low-quiescent standby (0.25 mA) to prevent deep discharge during idle periods. Use Value: Integrated 10 V gate supply ensures full MOSFET enhancement even at low battery voltages; VCP step-up option extends duty cycle at ≤15 V input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN32F0B | Integrated 32-bit ARM Cortex-M0 MCU + gate driver; no external shunt amps; uses single shunt + observer-based current reconstruction. | Best for cost-sensitive, firmware-controlled BLDC systems where sensorless commutation is acceptable. | Select STSPIN32F0B when embedded control and reduced component count outweigh need for direct shunt sensing and analog diagnostics. |
| MP6532 | 3-phase driver with 1.2 A peak gate drive; no integrated regulators; requires external 3.3 V and 10 V supplies; no UART diagnostics. | Suitable for space-constrained designs where external power rails already exist and fault reporting is handled externally. | Choose MP6532 when board-level power architecture is fixed and diagnostic depth is secondary to gate drive strength and thermal performance. |
Compared with STSPIN32F0B and MP6532, the TMC6140-LA uniquely combines triple analog shunt amplifiers, UART diagnostics, and dual integrated regulators - making it optimal for high-fidelity current sensing, rapid fault response, and single-rail system simplification in industrial and portable motor drives.
Availability
TMC6140-LA is available at Aetrix Electronics and suitable for industrial drives, robotics, and battery-operated power tools requiring stable component supply, long-term production continuity, and full functional validation.
Supply support for TMC6140-LA 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
TRINAMIC Motion Control GmbH & Co. KG is a German semiconductor company specializing in high-precision motion control ICs, known for advanced stepper and BLDC driver technology with embedded intelligence.
The TMC6140-LA belongs to TRINAMIC's universal gate driver product line, designed specifically for high-reliability, high-current 3-phase motor control in industrial automation, robotics, and portable power equipment.
FAQ
What is the maximum motor current supported by the TMC6140-LA?
The TMC6140-LA supports external MOSFETs rated for up to 100 A coil current. It does not limit current directly but enables robust control and sensing for such systems via its 0.5 A/1.0 A gate drive strength, triple shunt amplifiers, and analog short-detection circuitry. Actual current capability depends on selected MOSFETs, PCB layout, and thermal design - the TMC6140-LA itself is rated for continuous operation up to 150 °C junction temperature.
Does the TMC6140-LA include integrated voltage regulators?
Yes, the TMC6140-LA integrates two regulators: a 3.3 V/0.5 A switching regulator (buck converter, 680 kHz) with internal Schottky diode (≤100 mA), and a 10 V/60 mA linear regulator (V10) for gate driver supply. These allow single-rail operation from 5–30 V VS, eliminating need for external regulators to power logic or gate drivers - though external diodes or capacitors may be added for higher load or stability.
How does the TMC6140-LA handle diagnostics and fault reporting?
The TMC6140-LA reports faults via the DIAG pin using a UART-TxD protocol (9.6 kHz, 64-bit frame) encoding ten error flags including overtemperature (OT), undervoltage on VS (UVVS), short-to-ground (S2G), and phase-specific shorts. DIAG can also serve as an open-drain interrupt signal. Faults are cleared only by toggling ENABLE low for >5 ms - ensuring persistent visibility of critical conditions until acknowledged by the host controller.
Can the TMC6140-LA operate with low-voltage supplies like 12 V?
Yes, the TMC6140-LA operates from 5–30 V, and includes a step-up converter option for VCP when VS ≤15 V - using external Schottky diodes and capacitors to double VCP voltage and maintain 10 V gate drive under low input conditions. This preserves MOSFET enhancement and commutation reliability in 12 V battery systems, provided the external step-up components are correctly implemented per Figure 2 of the datasheet.
What is the function of the SH_SET pin on the TMC6140-LA?
The SH_SET pin on the TMC6140-LA is an analog input (0–3 V) that sets the threshold voltage for short-to-ground (S2G) detection on all three phases. A voltage of 0 V disables high-side outputs; increasing SH_SET raises the allowable shunt voltage before triggering protection. This enables field-adjustable fault sensitivity without firmware updates - critical for adapting to different motor impedances, sense resistor values, or thermal derating requirements in the final TMC6140-LA application.
TMC6140-LA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Motor Type - Stepper:
- Multiphase
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Pre-Driver - Half Bridge (3)
- Interface:
- Parallel
- Technology:
- NMOS
- Step Resolution:
- -
- Applications:
- Fan Controller
- Current - Output:
- 100A
- Voltage - Supply:
- 5V ~ 30V
- Voltage - Load:
- 5V ~ 30V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-QFN (5x6)
TMC6140-LA FAQ
1.How can I place an order for TMC6140-LA through Aetrix?
Please submit a Request for Quotation (RFQ) for TMC6140-LA 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 TMC6140-LA reliable?
The price and inventory of TMC6140-LA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMC6140-LA is usually 5 days.
3.What payment methods are accepted for TMC6140-LA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMC6140-LA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMC6140-LA?
TMC6140-LA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMC6140-LA 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 TMC6140-LA?
For technical support, including TMC6140-LA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMC6140-LA requirements.
6.How does Aetrix verify that TMC6140-LA is sourced from the original manufacturer or authorized distributors?
All TMC6140-LA 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 TMC6140-LA meets industry standards.
7.What is the process for return or replacement of TMC6140-LA?
All TMC6140-LA units undergo pre-shipment inspection (PSI). If there is an issue with TMC6140-LA, 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 TMC6140-LA part is unused and in its original packaging.
Return procedure for TMC6140-LA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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