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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Full Half-Bridge (H Bridge) Drivers

STMicroelectronics E-L6201PSTR

Name: E-L6201PSTR
Brand: STMicroelectronics
SKU: E-L6201PSTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-L6201PSTR

Manufacturer:: STMicroelectronics

Category:: Full Half-Bridge (H Bridge) Drivers

Package:: 20-SOIC (0.433", 11.00mm Width) Exposed Pad

Datasheet:: E-L6201PSTR.pdf

Description:: IC HALF BRIDGE DRV 4A POWERSO-20

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Product details

Overview

E-L6201PSTR from STMicroelectronics is a monolithic full-bridge DMOS motor driver in PowerSO-20 package, designed for bidirectional DC and bipolar stepper motor control. It delivers up to 5 A peak output current (2 A continuous), features 0.3 Ω typical R_DS(on), integrated cross-conduction protection, TTL/CMOS/µC-compatible logic inputs, and operates up to 100 kHz switching frequency in industrial motion systems.

For engineers reviewing the E-L6201PSTR datasheet, E-L6201PSTR pinout, E-L6201PSTR application, or E-L6201PSTR equivalent, key selection criteria include its dual half-bridge topology, bootstrap gate drive architecture, internal thermal shutdown at 150 °C, and sensing-based current regulation capability using external Rsense.

Technical Context

The E-L6201PSTR integrates two independent half-bridges with isolated DMOS power transistors fabricated in Multipower-BCD technology, enabling co-integration of high-voltage power stages and precision CMOS/bipolar control logic on a single die. Each channel is driven by dedicated IN1/IN2 inputs, while a shared ENABLE pin controls both bridges simultaneously.

It employs internal bootstrap circuits (BOOT1/BOOT2) to sustain ≥10 V gate-source voltage for upper N-channel DMOS transistors, supports synchronous rectification via intrinsic source-drain diodes, and includes built-in dead-time insertion (>40 ns) and thermal shutdown to prevent shoot-through and junction overheating.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage (V_S)	Up to 48 V - enables direct interface with 24 V/36 V industrial motor rails without external level-shifting.
Peak Output Current	5 A - supports short-duration torque bursts in brushed DC motors and stepper phase windings.
Continuous RMS Current	2 A - defines steady-state thermal limit for sustained motor drive without heatsink under PCB copper cooling.
R_DS(on) (typ.)	0.3 Ω at 25 °C - minimizes conduction loss (P = I²R) and self-heating during high-current operation.
Switching Frequency	Up to 100 kHz - allows fine-grained PWM resolution for smooth speed control and low audible noise.
Thermal Shutdown	150 °C - autonomous protection against thermal runaway; device resumes operation after junction cooldown.
Logic Compatibility	TTL/CMOS/µC - eliminates need for external level translators when interfacing with microcontrollers or FPGA GPIOs.

Pinout & Package

Package: PowerSO-20 (exposed thermal slug, JEDEC MO-166), optimized for surface-mount assembly and board-level heat dissipation via soldered slug to inner copper layers.

Pin/Terminal	Circuit Role	Design Meaning
1, 10, 14, 15, 16	GND	Common ground reference for logic, sense, and power return paths; multiple pins reduce impedance and improve noise immunity.
2, 3, 9, 12, 18, 19	N.C.	No internal connection - must be left unconnected; no routing or stitching required.
4	SENSE	Current-sense input - connects to external Rsense resistor for closed-loop motor current regulation and overcurrent protection.
5	ENABLE	Global bridge enable - logic high activates both half-bridges; logic low forces all DMOS transistors OFF regardless of IN1/IN2 states.
6	OUT2	Output of second half-bridge - drives one terminal of H-bridge load (e.g., motor winding end B).
7	V_S	Main power supply input - feeds both high-side and low-side DMOS transistors; decoupling capacitor required near pin.
8	BOOT1	Bootstrap capacitor node for first high-side gate - charges during low-side conduction to sustain gate drive above V_S.
11	IN1	Digital control input for first half-bridge - determines direction and state (source/sink) of OUT1 relative to GND/V_S.
13	IN2	Digital control input for second half-bridge - independently controls OUT2 state for full H-bridge commutation.
17	OUT1	Output of first half-bridge - drives opposite terminal of H-bridge load (e.g., motor winding end A).
19	BOOT2	Bootstrap capacitor node for second high-side gate - identical function to BOOT1 but for OUT2 path.
20	V_ref	Internal 13.5 V reference - supplies bias for external current-sense amplifier or comparator; bypassed with 0.22 µF to GND.

Key Features

Feature	Design Value
Integrated Cross-Conduction Protection	Hardware-enforced dead time >40 ns prevents simultaneous high-side/low-side conduction and rail-to-rail short-circuit.
Multipower-BCD Process Integration	Monolithic integration of DMOS power transistors + CMOS/Bipolar logic eliminates discrete gate drivers and reduces BOM count.
Bootstrap Gate Drive Architecture	Self-contained charge-pump circuit enables efficient high-side N-MOSFET drive without external high-voltage bias supplies.
Thermal Shutdown with Auto-Restart	Junction temperature monitoring triggers automatic disable at 150 °C and seamless recovery once safe temperature is restored.
Current Sensing Interface	Dedicated SENSE pin with ±1–4 V input range supports precise motor current feedback using standard shunt resistors and op-amps.

Applications

DC Motor Speed & Direction Control

Bipolar Stepper Motor Phase Driver

Use Scenario: Bidirectional speed control of 24 V brushed DC motors in automated valves and linear actuators.

IC Role / Device Role / Timing Role: Full H-bridge power stage executing PWM-driven current reversal and braking sequences under MCU command.

Use Value: Enables precise torque and position control with 2 A continuous current handling and <100 ns dead-time accuracy.

Use Scenario: Driving individual phases of 2-phase bipolar stepper motors in CNC positioning stages and 3D printer extruders.

IC Role / Device Role / Timing Role: Dual half-bridge per motor phase, synchronized with L297/L6506 translator for chopper-mode current regulation.

Use Value: Delivers 5 A peak phase current with fast 100 kHz switching, supporting microstepping and high-torque low-speed operation.

Industrial Conveyor Belt Drive

Automated Test Equipment Actuator

Use Scenario: Constant-torque drive for belt-fed material handling systems requiring reversible motion and stall protection.

IC Role / Device Role / Timing Role: Primary motor interface IC receiving direction/PWM signals from PLC I/O modules and regulating current via external Rsense.

Use Value: Integrated thermal shutdown and current sensing eliminate need for discrete protection circuitry, reducing system footprint.

Use Scenario: Precision actuation of probe arms and fixture clamps in semiconductor ATE platforms with strict EMI and reliability requirements.

IC Role / Device Role / Timing Role: Isolated motor driver stage decoupled from digital control domain via optocouplers and local power regulation.

Use Value: PowerSO-20 thermal slug enables stable operation at 70 °C ambient without heatsink, meeting ATE thermal derating constraints.

Equivalent & Alternatives

The following parts are listed as comparable options for similar full-bridge motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
L6203	Multiwatt-11 package, 4 A RMS current rating, higher thermal resistance (R_{th j-amb} = 60 °C/W), no N.C. pins.	Designed for through-hole mounting and higher-power industrial drives requiring heatsink attachment.	Select when board space permits larger footprint and thermal management requires mechanical heatsink interface.
TB6612FNG	SSOP-24 package, 1.2 A continuous per channel, integrated PWM generator, lower V_S max (15 V), no bootstrap circuit.	Targeted at low-voltage robotics and battery-powered devices; lacks high-side drive capability beyond 13.5 V.	Select for compact, low-power embedded systems where integrated PWM simplifies MCU firmware and supply is ≤13.5 V.

Compared with L6203, E-L6201PSTR offers superior thermal performance in surface-mount layouts and tighter pin compatibility for existing SO-20 footprints; versus TB6612FNG, it supports higher voltage/current operation and true bootstrap-based high-side drive essential for 24–48 V industrial loads.

Availability

E-L6201PSTR is available at Aetrix Electronics and suitable for industrial motor control, automated test equipment, and precision motion systems requiring stable component supply across extended production lifecycles.

Supply support for E-L6201PSTR 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, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

E-L6201PSTR belongs to the L62xx full-bridge driver product line, engineered specifically for robust, high-efficiency motor control in harsh industrial environments with emphasis on thermal resilience, fault tolerance, and minimal external component count.

FAQ

What is the maximum allowable supply voltage for E-L6201PSTR?

The absolute maximum supply voltage (V_S) is 52 V, but the recommended operating range is 12–48 V per datasheet specifications. Operation above 48 V risks exceeding safe operating area limits and may trigger thermal shutdown prematurely due to increased conduction losses in the 0.3 Ω R_DS(on) DMOS transistors.

Does E-L6201PSTR require external bootstrap diodes?

No - the E-L6201PSTR integrates internal charge-pump circuitry that automatically manages bootstrap capacitor charging for BOOT1 and BOOT2 pins. External diodes are unnecessary; only 10 nF ceramic capacitors between each BOOT pin and its corresponding output (OUT1/OUT2) are required for reliable high-side gate drive.

How does the SENSE pin interface with current regulation circuits?

The SENSE pin accepts differential voltage across an external shunt resistor (Rsense), with valid input range of –1 V to +4 V. It connects directly to the inverting input of an external op-amp or current-sense amplifier (e.g., L6506), enabling real-time motor current limiting and closed-loop speed control without additional signal conditioning.

Can E-L6201PSTR drive a unipolar stepper motor?

No - E-L6201PSTR is a full-bridge driver intended for bipolar stepper motor phase windings or brushed DC motors. Unipolar steppers require separate transistor arrays per winding and center-tap connections, which this device does not support; use dedicated unipolar drivers like ULN2003 instead.

E-L6201PSTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 20-SOIC (0.433", 11.00mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose

Interface:: Logic

Load Type:: Inductive

Technology:: BCDMOS

Rds On (Typ):: 300mOhm

Current - Output / Channel:: 4A

Current - Peak Output:: -

Voltage - Supply:: 12V ~ 48V

Voltage - Load:: 12V ~ 48V

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Features:: Bootstrap Circuit

Fault Protection:: Over Temperature

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSO-20

E-L6201PSTR FAQ

1.How can I place an order for E-L6201PSTR through Aetrix?

Please submit a Request for Quotation (RFQ) for E-L6201PSTR 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 E-L6201PSTR reliable?

The price and inventory of E-L6201PSTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6201PSTR is usually 5 days.

3.What payment methods are accepted for E-L6201PSTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6201PSTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L6201PSTR?

E-L6201PSTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-L6201PSTR 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 E-L6201PSTR?

For technical support, including E-L6201PSTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6201PSTR requirements.

6.How does Aetrix verify that E-L6201PSTR is sourced from the original manufacturer or authorized distributors?

All E-L6201PSTR 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 E-L6201PSTR meets industry standards.

7.What is the process for return or replacement of E-L6201PSTR?

All E-L6201PSTR units undergo pre-shipment inspection (PSI). If there is an issue with E-L6201PSTR, 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 E-L6201PSTR part is unused and in its original packaging.

Return procedure for E-L6201PSTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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