My Inquiry
My Account
STMicroelectronics L6227PD
- Part No.:
- L6227PD
- Manufacturer:
- STMicroelectronics
- Category:
- Motor Drivers, Controllers
- Package:
- 36-PowerBSSOP (0.433", 11.00mm Width)
- Datasheet:
-
L6227PD.pdf
- Description:
- IC MTR DRV BIPOLAR 8-52V 36PWRSO
- Quantity:
- Payment:
- Shipping:
Inventory:1,109
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
L6227PD from STMicroelectronics is a DMOS dual full-bridge motor driver IC with integrated PWM current controllers, designed for bipolar stepper and dual DC motor control in industrial motion systems. It operates from 8–52 V, delivers 2.8 A peak (1.4 A DC) per bridge, features 0.73 Ω typical RDS(ON) at 25 °C, supports up to 100 kHz switching, and implements non-dissipative overcurrent protection on high-side MOSFETs.
For engineers reviewing the L6227PD datasheet, L6227PD pinout, L6227PD application, or L6227PD equivalent, this device is selected for precise current-regulated motor drive where thermal robustness, cross-conduction immunity, and synchronous slow-decay recirculation are required - especially in compact PCB layouts needing PowerSO36 thermal performance.
Technical Context
The L6227PD integrates two independent BCD-technology full bridges, each with N-channel high-side and low-side DMOS transistors and intrinsic fast freewheeling diodes. Its constant tOFF PWM current control uses external RC networks on RCA/RCB pins to set decay timing, with internal blanking (1 µs) preventing false triggering from diode reverse-recovery spikes.
Logic inputs (IN1A/IN2A/IN1B/IN2B) are TTL/CMOS-compatible with 1.8 V turn-on and 1.3 V turn-off thresholds; ENA/ENB pins serve dual roles - enabling bridge operation and receiving open-drain fault signals from integrated overcurrent/thermal protection circuits - requiring external 100 kΩ pull-up resistors when driven by push-pull sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 8–52 V - supports wide-input industrial DC bus rails without external regulation. |
| Peak output current | 2.8 A per bridge - enables driving 1.8 A RMS stepper coils or dual 1.4 A DC motors. |
| RDS(ON) (typ., 25 °C) | 0.73 Ω (HS + LS combined) - limits conduction loss to ~2.9 W at 1.4 A DC per bridge. |
| Switching frequency | Up to 100 kHz - allows fine current resolution and audible-noise suppression in stepper microstepping. |
| Thermal shutdown | 165 °C junction - protects against sustained overload or inadequate heatsinking in enclosed enclosures. |
| Dead time | 1 µs typical - prevents shoot-through during bridge commutation without external timing circuitry. |
| Non-dissipative OCD | Detects >2.8 A output current via internal high-side current mirroring - eliminates external sense resistor power loss and layout sensitivity. |
Pinout & Package
Available in PowerSO36 package (slug-connected to GND pins 1, 18, 19, 36), optimized for high-power dissipation with 2 °C/W junction-to-case thermal resistance. The exposed thermal pad requires direct solder connection to PCB ground plane for effective heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1A / IN2A / IN1B / IN2B | Bridge logic input | Directly controls H-bridge direction (forward/reverse/brake) per bridge; TTL/CMOS compatible with 1.8 V threshold. |
| ENA / ENB | Bridge enable + fault sink | Low disables both MOSFETs; also pulled low (≤1.3 V) during overcurrent/thermal fault - requires 100 kΩ pull-up for auto-recovery. |
| SENSEA / SENSEB | Current sense reference | Connected to source of low-side MOSFETs via external shunt; comparator input for PWM current regulation. |
| VREFA / VREFB | PWM reference voltage | Sets current limit threshold (e.g., 0.5 V → 1.4 A with 0.35 Ω shunt); must not be left floating or grounded. |
| RCA / RCB | RC timing network | External R-C sets constant off-time (tOFF = 0.6·R·C + 1 µs); determines decay duration and max switching frequency. |
| VSA / VSB | Bridge power supply | Separate inputs for Bridge A and B - allow independent supply domains or redundancy; tied together in most designs. |
| VBOOT | Bootstrap supply | Drives high-side gates above VS; generated internally via VCP oscillator and external charge pump (220 nF CBOOT, 1N4148 diodes). |
| GND (pins 1,18,19,36) | Power & signal ground | Internally bonded to thermal slug - must be solidly connected to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM current controllers | Each bridge has separate RCA/RCB and VREFA/VREFB pins - enables asymmetric current tuning for mismatched motors or hybrid stepper modes. |
| Slow decay synchronous rectification | After tOFF, upper MOSFET conducts as synchronous rectifier - reduces power loss vs. diode freewheeling and improves torque at low speed. |
| Non-dissipative overcurrent protection | Internal high-side current mirroring detects >2.8 A without external shunt - saves board space, eliminates 1–2 W resistor dissipation, and improves accuracy. |
| Cross conduction protection | Hardware-enforced 1 µs dead time between high-side and low-side turn-on - prevents shoot-through even under logic timing skew or noise. |
| Integrated fast freewheeling diodes | Body diodes of DMOS transistors optimized for <300 ns reverse recovery - minimizes voltage spikes and EMI during current recirculation. |
Applications
| Industrial CNC Stepper Drive | Automated Valve Actuation |
|---|---|
|
Use Scenario: Precision open-loop positioning of linear actuators in CNC routers using 1.8° bipolar stepper motors. IC Role / Device Role / Timing Role: Dual full-bridge driver executing step/direction commands with microstepping-capable PWM current regulation and slow-decay decay mode. Use Value: Maintains holding torque at standstill via constant-current chopping; thermal shutdown prevents coil burnout during stall conditions. |
Use Scenario: Bidirectional control of 24 V DC gearmotor-driven pneumatic valves in factory automation panels. IC Role / Device Role / Timing Role: Dual independent H-bridge delivering forward/reverse polarity and braking, with EN-controlled soft-start and fault latching. Use Value: Non-dissipative OCD eliminates need for current-sense resistors - simplifies BOM and avoids drift-induced position error in long-term valve positioning. |
| Medical Infusion Pump Motor Control | Robotic Joint Actuator |
|
Use Scenario: Low-noise, low-vibration peristaltic pump motor drive requiring smooth 1/16-step microstepping and precise flow rate control. IC Role / Device Role / Timing Role: Constant tOFF PWM controller synchronizing with MCU-generated step pulses; slow decay minimizes acoustic noise and mechanical resonance. Use Value: 100 kHz max switching enables high-resolution current control below audible range (<20 kHz), critical for patient comfort in clinical environments. |
Use Scenario: Compact joint module integrating dual DC motors for differential drive in collaborative robot arms. IC Role / Device Role / Timing Role: Dual-bridge driver supporting independent torque control per motor via separate VREF inputs and RC timing networks. Use Value: PowerSO36 package delivers 2 °C/W junction-to-case thermal resistance - sustains 1.4 A continuous per bridge in space-constrained robotic enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher 4.5 A peak current but no integrated PWM controller - requires external current-sense amplifier and PWM generator. | Used in high-torque stepper systems where external microstepping logic is already present; lacks slow-decay sync rectification. | Select when maximum current capability is prioritized over integration and board space; adds design complexity for current regulation. |
| DRV8876PWPR | Single H-bridge (not dual); includes integrated current regulation but only one bridge per package - requires two units for dual-motor control. | Preferred in new designs targeting TI ecosystem compatibility and I²C configurability; smaller SO PowerPAD package. | Choose for scalability across single/dual/multi-axis platforms - but doubles component count and routing complexity versus L6227PD's monolithic dual bridge. |
Compared with TB6600HG and DRV8876PWPR, the L6227PD uniquely combines dual full-bridge integration, self-contained PWM current control, non-dissipative overcurrent protection, and PowerSO36 thermal performance - reducing external components, PCB area, and system-level calibration effort for industrial motion control.
Availability
L6227PD is available at Aetrix Electronics and suitable for industrial CNC systems, automated valve actuation, medical infusion pumps, and robotic joint modules requiring stable component supply, long-lifecycle support, and validated thermal performance in PowerSO36 packaging.
Supply support for L6227PD 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 specializing in power management, motion control, and industrial-grade analog/mixed-signal ICs, with manufacturing aligned to ISO 9001 and AEC-Q100 standards.
The L6227PD belongs to ST's L62xx family of intelligent motor drivers - engineered specifically for cost-sensitive, thermally demanding industrial motion applications requiring high integration and reliability without external current-sense components.
FAQ
What is the purpose of the VBOOT pin, and what external components are required?
VBOOT supplies gate drive voltage above VSA/VSB for the high-side N-channel MOSFETs. It requires an external charge pump: 220 nF bootstrap capacitor (CBOOT), 10 nF timing capacitor (CP), 100 Ω resistor (RP), and two 1N4148 diodes. The internal VCP oscillator (600 kHz typical) drives this network - no external clock source is needed.
How does the non-dissipative overcurrent protection work without a sense resistor?
It uses internal current mirroring from each high-side DMOS transistor to generate a scaled replica current (typically 1/1000 of load current). This replica is compared to an internal 4 mA reference. When load current exceeds ~2.8 A, the comparator pulls ENA/ENB low via an open-drain MOSFET - eliminating external shunt resistors and their associated power loss and thermal drift.
Can the L6227PD drive unipolar stepper motors?
No - the L6227PD is designed exclusively for bipolar stepper motors and dual DC motors. Its dual full-bridge topology provides four-quadrant control (forward/reverse/brake) per winding, which is incompatible with the center-tapped winding configuration and half-bridge drive requirements of unipolar steppers.
What is the minimum recommended copper area for thermal management in PowerSO36?
For reliable 1.4 A DC operation, ST recommends a 6 cm² copper pour on the PCB bottom layer connected to the exposed thermal slug (pins 1/18/19/36). With 16 thermal vias to an internal ground plane, junction-to-ambient thermal resistance drops to 16 °C/W - enabling operation up to 105 °C ambient without forced airflow.
L6227PD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STSPIN L62
- Package/Case:
- 36-PowerBSSOP (0.433", 11.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Parallel
- Technology:
- DMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 1.4A
- Voltage - Supply:
- 8V ~ 52V
- Voltage - Load:
- 8V ~ 52V
- Operating Temperature:
- -25°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerSO-36 Slug Up
L6227PD FAQ
1.How can I place an order for L6227PD through Aetrix?
Please submit a Request for Quotation (RFQ) for L6227PD 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 L6227PD reliable?
The price and inventory of L6227PD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L6227PD is usually 5 days.
3.What payment methods are accepted for L6227PD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L6227PD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for L6227PD?
L6227PD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your L6227PD 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 L6227PD?
For technical support, including L6227PD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L6227PD requirements.
6.How does Aetrix verify that L6227PD is sourced from the original manufacturer or authorized distributors?
All L6227PD 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 L6227PD meets industry standards.
7.What is the process for return or replacement of L6227PD?
All L6227PD units undergo pre-shipment inspection (PSI). If there is an issue with L6227PD, 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 L6227PD part is unused and in its original packaging.
Return procedure for L6227PD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
L6227PD Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
