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

STMicroelectronics E-L6201PS

Name: E-L6201PS
Brand: STMicroelectronics
SKU: E-L6201PS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-L6201PS

Manufacturer:: STMicroelectronics

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

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

Datasheet:: E-L6201PS.pdf

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

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Product details

Overview

E-L6201PS 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 (10 A pulsed), supports 48 V supply voltage, features 0.3 Ω typical R_DS(ON), integrated cross-conduction protection, and operates up to 100 kHz switching frequency in industrial motion systems.

For engineers reviewing the E-L6201PS datasheet, E-L6201PS pinout, E-L6201PS application, or E-L6201PS equivalent, this page provides verified technical context, validated pin functions, real-world motor drive use cases, thermal performance data, and confirmed alternative options - all grounded in ST's official L6201/L6201PS documentation.

Technical Context

The E-L6201PS integrates two independent half-bridge channels using Multipower-BCD technology, combining isolated DMOS power transistors with CMOS/Bipolar logic on a single die. Each channel accepts TTL/CMOS/µC-compatible inputs (IN1/IN2) and shares a common ENABLE signal, enabling four-quadrant motor control via source-sink logic states.

It implements internal bootstrap circuitry for high-side N-channel DMOS gate drive, dead-time protection (>40 ns), thermal shutdown at 150 °C, and current sensing via SENSE pin with –1 V to +4 V input range. The device uses an internal 13.5 V reference (Vref) capable of sourcing 2 mA, and supports synchronous rectification with intrinsic body diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage (Vs)	12–48 V - supports 24 V and 42 V industrial motor rails without external regulation
Peak Output Current	5 A - enables driving medium-power DC motors (e.g., 24 V/50 W) with short-duration torque bursts
R_DS(ON) (typ.)	0.3 Ω @ 25 °C - limits conduction loss to ≤0.75 W per transistor at 1.5 A RMS
Switching Frequency	Up to 100 kHz - allows fine-grained PWM speed control while maintaining MOSFET efficiency
Sense Voltage Range	–1 V to +4 V - accommodates bidirectional current sensing with external shunt resistor
Thermal Shutdown	150 °C junction - autonomous fault recovery after cooling, no latch-up
Logic Compatibility	TTL/CMOS/µC - interfaces directly with microcontrollers without level-shifting circuitry

Pinout & Package

Package: PowerSO-20 (JEDEC MO-166), thermally enhanced surface-mount package with exposed lead slug for PCB heat sinking; footprint compatible with SO-20 but optimized for higher power dissipation (R_{th j-pins} = 13 °C/W).

Pin	Circuit Role	Design Meaning
1	SENSE	Current sense input - connects to shunt resistor to enable closed-loop motor current regulation
2	ENABLE	Global enable - logic high activates both half-bridges; low disables all outputs and resets internal logic
3,7,14,15,16	GND	Common ground terminals - multiple pins reduce ground impedance and improve noise immunity
4	OUT2	Output of second half-bridge - drives one terminal of H-bridge load (e.g., motor winding end B)
5	Vs	Main power supply input - rated for 48 V max; decoupling capacitor required near pin
6	OUT1	Output of first half-bridge - drives opposite motor terminal (e.g., winding end A)
8	BOOT1	Bootstrap capacitor node for upper DMOS gate drive - requires ≥10 nF ceramic capacitor to GND
9	IN1	Digital input for first half-bridge - controls OUT1 sourcing/sinking state when ENABLE = H
11	IN2	Digital input for second half-bridge - controls OUT2 sourcing/sinking state when ENABLE = H
12	BOOT2	Bootstrap capacitor node for second upper DMOS - independent charge path ensures dual-channel operation
13	Vref	Internal 13.5 V reference - bypassed with 0.22 µF capacitor; supplies current-limited reference for sensing circuits
17–20	GND	Additional ground connections - enhance thermal conduction and reduce EMI in high-current paths

Key Features

Feature	Design Value
Integrated Bootstrap Circuitry	Eliminates need for external high-side gate drivers; enables efficient N-channel DMOS operation in both upper switches
Cross-Conduction Protection	Hardware-enforced dead time >40 ns prevents shoot-through during switching transitions
Multipower-BCD Process	Monolithic integration of DMOS power stages + CMOS/Bipolar logic reduces board space and interconnect parasitics
Thermal Shutdown with Auto-Restart	Self-protecting behavior avoids system lockup; resumes operation once junction cools below safe threshold
Wide Logic Input Voltage Range	–0.3 V to +7 V tolerance allows direct interface with 3.3 V and 5 V microcontrollers without clamping diodes

Applications

DC Motor Speed & Direction Control

Bipolar Stepper Motor 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-bridge power stage executing PWM-driven H-bridge commutation; handles direction reversal and braking via IN1/IN2 logic sequencing.

Use Value: Enables precise torque and position control without external gate drivers or discrete MOSFETs - reducing BOM count by ≥6 components.

Use Scenario: Microstepping control of NEMA 17 bipolar stepper motors in 3D printer extruder assemblies.

IC Role / Device Role / Timing Role: Dual half-bridge driver receiving phase signals from L297 or L6506 translator; manages chopper current regulation at 20–50 kHz.

Use Value: Delivers 4 A peak per phase with <0.3 Ω R_DS(ON), minimizing heat rise and eliminating need for heatsinks in enclosed enclosures.

Industrial Conveyor Belt Drive

Automated Test Equipment (ATE) Load Switch

Use Scenario: Constant-torque drive for 48 V conveyor belts in packaging machinery requiring smooth start/stop cycles.

IC Role / Device Role / Timing Role: High-efficiency motor driver operating in one-phase chopping mode; senses current via external shunt to limit inrush and stall currents.

Use Value: Supports 48 V rail with 5 A peak capability and thermal shutdown - ensures reliable operation under variable mechanical loads.

Use Scenario: Programmable DC load switching in benchtop power supply testers requiring fast, bidirectional current sourcing/sinking.

IC Role / Device Role / Timing Role: Reconfigurable full-bridge used as active electronic load; IN1/IN2 and ENABLE manage sink/source polarity and duty cycle.

Use Value: Leverages intrinsic body diodes and low R_DS(ON) to achieve <100 ns transition times and <1.5 V forward drop during recirculation.

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 rating; higher R_{th j-amb} (60 °C/W) vs. PowerSO-20 (13 °C/W)	Preferred for through-hole prototyping or lower-frequency (<30 kHz) applications where thermal mass compensates for lower efficiency	Select when board layout constraints favor through-hole mounting or when legacy Multiwatt footprint must be retained
TB6612FNG	Smaller 24-pin SSOP; 1.2 A continuous; built-in PWM generator; no bootstrap capacitors required	Suitable for low-power robotics (≤12 V, <2 A) but lacks 48 V support and 5 A peak capability of E-L6201PS	Choose only for space-constrained, battery-powered designs where voltage and current requirements are significantly lower

Compared with L6203 and TB6612FNG, E-L6201PS uniquely balances high-voltage (48 V), high-current (5 A peak), and thermally optimized surface-mount packaging - making it the only option among the three suitable for industrial 24–48 V motor drives requiring sustained 4 A RMS operation without external heatsinking.

Availability

E-L6201PS is available at Aetrix Electronics and suitable for industrial motor control, automated test equipment, and precision motion systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for E-L6201PS 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, motion control, and automotive-grade ICs with over 40 years of analog/mixed-signal process expertise.

E-L6201PS belongs to ST's L62xx full-bridge driver family, engineered specifically for robust, high-efficiency motor control in industrial automation - emphasizing thermal resilience, integrated protection, and seamless µC interfacing.

FAQ

What is the maximum continuous current rating for E-L6201PS?

The E-L6201PS supports 4 A RMS continuous current per channel, as specified in ST's official datasheet (page 1, "TOTAL RMS CURRENT UP TO L6203/L6201PS: 4A"). This rating assumes proper PCB copper area for thermal dissipation (R_{th j-pins} = 13 °C/W) and ambient temperature ≤70 °C. Peak current reaches 5 A for non-repetitive pulses under 1 ms.

Does E-L6201PS require external bootstrap diodes?

No - E-L6201PS integrates internal charge pump circuitry for bootstrap capacitor charging, eliminating the need for external bootstrap diodes. As confirmed in the "Bootstrap Capacitors" section (page 10), only external 10 nF ceramic capacitors between BOOT1/BOOT2 and GND are required to ensure full 10 V gate drive for upper DMOS transistors.

Can E-L6201PS drive a 48 V motor with current sensing?

Yes - E-L6201PS supports 48 V supply (Vs) and accepts –1 V to +4 V differential input on the SENSE pin, enabling bidirectional current sensing across a shunt resistor. Its internal current-limiting architecture and thermal shutdown protect against overcurrent events during 48 V operation, as verified in Absolute Maximum Ratings (page 3) and Electrical Characteristics (page 4).

How does the ENABLE pin affect motor braking behavior?

When ENABLE is pulled low, all four DMOS transistors turn off, forcing motor current to recirculate through intrinsic body diodes - resulting in slow decay (coasting) braking. When ENABLE is high and IN1/IN2 are set to opposing states (e.g., IN1=H/IN2=L), the bridge enters fast decay (active) braking mode by shorting motor terminals through complementary transistors, as detailed in Table 1 (page 9) and Application Information (page 11).

E-L6201PS Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

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-L6201PS FAQ

1.How can I place an order for E-L6201PS through Aetrix?

Please submit a Request for Quotation (RFQ) for E-L6201PS 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-L6201PS reliable?

The price and inventory of E-L6201PS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L6201PS is usually 5 days.

3.What payment methods are accepted for E-L6201PS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L6201PS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L6201PS?

E-L6201PS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-L6201PS 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-L6201PS?

For technical support, including E-L6201PS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L6201PS requirements.

6.How does Aetrix verify that E-L6201PS is sourced from the original manufacturer or authorized distributors?

All E-L6201PS 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-L6201PS meets industry standards.

7.What is the process for return or replacement of E-L6201PS?

All E-L6201PS units undergo pre-shipment inspection (PSI). If there is an issue with E-L6201PS, 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-L6201PS part is unused and in its original packaging.

Return procedure for E-L6201PS:

1.Submit a request within 90 days.

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

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