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STMicroelectronics L6207Q
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- Part No.:
- L6207Q
- Manufacturer:
- STMicroelectronics
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
L6207Q.pdf
- Description:
- IC HALF BRIDGE DRV 2.5A 48VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,036
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Product details
Overview
L6207Q from STMicroelectronics is a DMOS dual full-bridge motor driver IC designed for bipolar stepper and dual/quad DC motor control, featuring 8–52 V operating supply, 5.6 A peak output current per bridge, 0.3 Ω typical high-side RDS(on) at 25 °C, 100 kHz max switching frequency, and integrated non-dissipative overcurrent protection.
For engineers reviewing the L6207Q datasheet, L6207Q pinout, L6207Q application, or L6207Q equivalent, this device supports precise PWM current regulation via dual independent constant tOFF controllers, slow-decay synchronous rectification, cross-conduction prevention, thermal shutdown, and undervoltage lockout in industrial motion control systems.
Technical Context
The L6207Q integrates two fully independent power bridges with isolated DMOS transistors in BCD-multipower technology, each with dedicated logic inputs (IN1/IN2), enable pins (ENA/ENB), current-sense reference inputs (VREFA/VREFB), and RC timing networks (RCA/RCB) for programmable tOFF.
Its PWM current control uses internal sense comparators monitoring voltage across external shunt resistors connected to SENSEA/SENSEB, triggering monostable off-times synchronized with deadtime (1 µs typ.) and blanking (1 µs) to reject diode reverse-recovery spikes - enabling stable microstepping and torque control in stepper applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 8–52 V - supports wide-range industrial DC bus operation without external regulators. |
| Peak output current | 5.6 A per bridge - enables direct driving of medium-power stepper or DC motors without external current boosting. |
| RDS(on) (HS, 25 °C) | 0.34 Ω typ. - minimizes conduction loss and thermal stress at rated load. |
| Switching frequency | Up to 100 kHz - allows high-resolution PWM current control and reduced audible noise in motor drives. |
| tOFF programmability | 13–61 µs range (via ROFF = 20–100 kΩ, COFF = 1 nF) - sets decay time for precise current ripple management. |
| Thermal shutdown | 165 °C junction temperature - protects against sustained overload or poor heatsinking in enclosed systems. |
| Overcurrent threshold | 5.6 A typ. - non-dissipative detection eliminates external sense resistor and associated power loss. |
Pinout & Package
Package: VFQFPN48 (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad requiring GND connection for heat dissipation and EMI control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1A, IN2A / IN1B, IN2B | Bridge A/B logic inputs | TTL/CMOS-compatible control signals defining H-bridge state (forward/reverse/brake); support microstepping phase sequencing. |
| ENA, ENB | Bridge A/B enable | Active-high logic inputs that disable both high- and low-side MOSFETs; internally tied to OCD/thermal fault open-drain outputs. |
| SENSEA, SENSEB | Current sense return | Connect to ground via external shunt resistor; feeds voltage to internal comparator for PWM current regulation. |
| RCA, RCB | RC timing network | Set constant tOFF duration via external R–C network; determines current decay rate and ripple magnitude. |
| VREFA, VREFB | PWM reference input | Analog voltage (0–7 V) setting target current level; directly scales sensed current threshold for closed-loop regulation. |
| VSA, VSB | Bridge A/B power supply | Must be shorted externally to common 8–52 V rail; supplies both high- and low-side DMOS stages. |
| OUT1A, OUT2A / OUT1B, OUT2B | Bridge A/B power outputs | Drive motor windings in full-H configuration; support bidirectional current flow with synchronous rectification. |
| VBOOT | Bootstrap supply | Drives high-side gate via external charge pump (VCP oscillator + CBOOT/D1/D2) enabling N-channel upper FETs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM current controllers | Each bridge has separate RCA/RCB and VREFA/VREFB for asymmetric current tuning and independent decay timing. |
| Slow-decay synchronous rectification | Reduces power loss during current recirculation by turning on high-side MOSFET instead of freewheeling diodes. |
| Non-dissipative overcurrent protection | Eliminates need for external current-sense resistor and associated 1–2 W power dissipation at 5 A. |
| Cross-conduction protection | 1 µs internal deadtime prevents shoot-through during high-side/low-side switching transitions. |
| Integrated fast freewheeling diodes | On-chip body diodes reduce external component count and improve layout compactness for PCB space-constrained designs. |
Applications
| Bipolar Stepper Motor Control | Dual DC Motor Drive |
|---|---|
|
Use Scenario: Precision position control in CNC axes, 3D printer extruders, and automated lab equipment using 1.8° or 0.9° stepper motors. IC Role / Device Role / Timing Role: Dual full-bridge driver executing microstepping waveforms with constant-current chopping and slow-decay decay mode. Use Value: Enables smooth low-speed torque and reduced vibration via adjustable tOFF and synchronous rectification - no external current sense resistors required. |
Use Scenario: Independent forward/reverse control of two brushed DC motors in robotic arms or automated gates. IC Role / Device Role / Timing Role: Dual H-bridge interface between MCU GPIOs and motor windings, supporting brake, coast, and directional modes. Use Value: Simplifies firmware by eliminating discrete half-bridge drivers and external protection circuitry - single IC handles 5.6 A peak per channel. |
| Quad DC Motor Systems | Industrial Valve Actuation |
|
Use Scenario: Simultaneous control of four small DC motors in HVAC damper arrays or multi-axis stage positioning. IC Role / Device Role / Timing Role: Two independent bridges configured as four half-bridges (e.g., OUT1A/OUT2A for Motor 1, OUT1B/OUT2B for Motor 2). Use Value: Reduces BOM count vs. four discrete half-bridge drivers; shared VSA/VSB supply simplifies power routing on 4-layer PCBs. |
Use Scenario: Fail-safe actuation of solenoid valves in process control systems requiring thermal and overcurrent fault reporting. IC Role / Device Role / Timing Role: Motor driver with integrated EN-pin fault signaling (OCD/thermal) feeding back to PLC I/O modules. Use Value: Eliminates need for external fault-conditioning circuitry; ENA/ENB open-drain outputs directly interface with 24 V PLC inputs via pull-up resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual full-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher 4.5 A RMS rating but requires external current sense resistors and lacks non-dissipative OCD. | Targeted at lower-cost open-loop stepper systems where thermal margin > precision current regulation. | Select when budget constraints outweigh need for integrated sensing and thermal robustness. |
| DRV8876PWPR | Single H-bridge (not dual), 6.5 A peak, integrated current sense amplifier, but no constant-tOFF PWM controller. | Suited for single-motor servo loops with analog current feedback, not dual-stepper microstepping. | Choose only if system uses one motor and requires analog current monitoring over chopping regulation. |
Compared with TB6600HG and DRV8876PWPR, the L6207Q uniquely combines dual independent constant-tOFF PWM controllers, non-dissipative overcurrent detection, and slow-decay synchronous rectification - making it optimal for compact, thermally constrained bipolar stepper systems requiring minimal external components and precise current control.
Availability
L6207Q is available at Aetrix Electronics and suitable for industrial automation, robotics, and precision motion control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for L6207Q 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, motor control, and automotive-grade ICs with vertical manufacturing capabilities.
The L6207Q belongs to ST's "Power Transistor Drivers" product line, engineered specifically for high-efficiency, high-reliability motor drive solutions in industrial and medical equipment where thermal resilience and integration density are critical.
FAQ
What is the minimum recommended ON time for stable PWM current regulation?
The L6207Q enforces a minimum ON time (tON(MIN)) of 1.5 µs (typical). For reliable current regulation, the actual ON time must exceed both tON(MIN) and the RC rise time (tRCRISE = 600 × COFF) minus deadtime. Using COFF = 1 nF yields tRCRISE ≈ 600 ns, satisfying this condition at typical 20–50 kHz switching frequencies.
How is non-dissipative overcurrent protection implemented without an external sense resistor?
The L6207Q embeds a precision current mirror within each high-side DMOS transistor, delivering ~1/2000 of the output current to the OCD comparator. This eliminates the need for external shunt resistors while maintaining ±15% accuracy across temperature, reducing board area and eliminating up to 2 W of heat generation at 5 A.
Can the L6207Q drive unipolar stepper motors?
No - the L6207Q is designed exclusively for bipolar stepper motors and dual/quad DC motors. Its dual full-bridge topology requires four terminals per winding (no center tap), and its PWM current control architecture assumes bidirectional current flow through each winding - incompatible with unipolar (5-/6-wire) stepper wiring.
What thermal design considerations apply to the VFQFPN48 package?
The exposed thermal pad must be soldered to a minimum 200 mm² copper pour connected to GND for effective heat transfer. With 2.5 A RMS per bridge and 0.34 Ω RDS(on), power dissipation reaches ~2.1 W per bridge at full load; PCB thermal vias (≥8 × 0.3 mm) under the pad are mandatory to maintain Tj < 125 °C in still-air environments.
L6207Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Output Configuration:
- Half Bridge (4)
- Applications:
- DC Motors, Stepper Motors, Voltage Regulators
- Interface:
- Logic
- Load Type:
- Inductive
- Technology:
- DMOS
- Rds On (Typ):
- 280mOhm LS, 340mOhm HS
- Current - Output / Channel:
- 2.5A
- Current - Peak Output:
- 5.6A
- Voltage - Supply:
- 8V ~ 52V
- Voltage - Load:
- 8V ~ 52V
- Operating Temperature:
- -25°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit
- Fault Protection:
- Current Limiting, Over Temperature, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VFQFPN (7x7)
L6207Q FAQ
1.How can I place an order for L6207Q through Aetrix?
Please submit a Request for Quotation (RFQ) for L6207Q 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 L6207Q reliable?
The price and inventory of L6207Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6207Q is usually 5 days.
3.What payment methods are accepted for L6207Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6207Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L6207Q?
L6207Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L6207Q 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 L6207Q?
For technical support, including L6207Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6207Q requirements.
6.How does Aetrix verify that L6207Q is sourced from the original manufacturer or authorized distributors?
All L6207Q 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 L6207Q meets industry standards.
7.What is the process for return or replacement of L6207Q?
All L6207Q units undergo pre-shipment inspection (PSI). If there is an issue with L6207Q, 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 L6207Q part is unused and in its original packaging.
Return procedure for L6207Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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