STMicroelectronics E-L6207D

Overview

E-L6207D 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. It operates from 8–52 V supply, delivers 5.6 A peak (2.8 A DC) per bridge, features 0.3 Ω typical R_DS(ON) at 25 °C, supports up to 100 kHz switching, and includes non-dissipative overcurrent protection and thermal shutdown.

For engineers reviewing the E-L6207D datasheet, E-L6207D pinout, E-L6207D application, or E-L6207D equivalent, key selection criteria include dual independent constant t_OFF PWM regulation, slow-decay synchronous rectification, cross-conduction prevention, bootstrap gate drive architecture, and SO24/PowerSO36 package thermal performance.

Technical Context

The L6207D integrates two isolated DMOS full bridges in BCD technology, each with high-side and low-side N-channel MOSFETs and intrinsic fast freewheeling diodes. Its dual constant t_OFF PWM current controllers regulate load current via external sense resistors and RC networks on RCA/RCB pins, with 1 µs internal deadtime and 1 µs blanking time to suppress diode reverse-recovery spikes.

Non-dissipative overcurrent detection monitors high-side MOSFET current directly-eliminating external sense resistors-while ENA/ENB pins serve dual roles as enable inputs and open-drain fault outputs tied to internal protection transistors. Bootstrap charge pump (VCP output, ~600 kHz) generates V_BOOT for high-side gate drive without external high-voltage supplies.

Key Specifications

Pinout & Package

Available in SO24 (20 + 2 + 2) and PowerSO36 packages; both expose GND pins (SO24: pins 6,7,18,19; PowerSO36: pins 1,18,19,36) for thermal conduction to PCB copper. PowerSO36 offers lower R_th-j-case (1 °C/W) vs. SO24's R_th-j-pins (14 °C/W), enabling higher continuous power in space-constrained designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6600HG and DRV8876PWPR, the E-L6207D uniquely combines dual independent PWM current control, non-dissipative overcurrent protection, and bootstrap gate drive in one package-making it optimal for 24–48 V industrial stepper and dual-DC motor systems where thermal efficiency, component count, and functional integration are critical.

Availability

E-L6207D is available at Aetrix Electronics and suitable for bipolar stepper motor control, dual DC motor drive, industrial valve actuation, and automotive HVAC blower systems requiring stable component supply across multi-year production cycles.

Supply support for E-L6207D 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, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The L6207D belongs to ST's motor driver product line-engineered specifically for high-voltage, high-current H-bridge applications demanding integrated protection, efficient thermal management, and simplified system-level motor control.

FAQ

What is the minimum recommended sense resistor value for E-L6207D at 2.8 A DC output?

The minimum sense resistor is determined by V_REF range (0–5 V) and comparator offset (±5 mV). For 2.8 A DC with V_REF = 0.7 V, R_SENSE = 0.7 V / 2.8 A = 0.25 Ω. To maintain accuracy against offset error, use ≥0.22 Ω (e.g., 0.22 Ω ±1%). Lower values increase sensitivity to noise and require tighter layout control.

Can E-L6207D operate with a single 24 V supply for both bridges?

Yes-VSA and VSB pins must be connected together to a common 24 V rail. The device supports independent supply inputs but does not require separation; shared supply simplifies power distribution and reduces component count. Ensure adequate decoupling (≥100 µF bulk + 100 nF ceramic per VS pin) near the IC.

How is thermal performance affected when using the SO24 versus PowerSO36 package?

PowerSO36 provides significantly better thermal dissipation: R_th-j-case = 1 °C/W vs. SO24's R_th-j-pins = 14 °C/W. At 2.8 A DC per bridge, PowerSO36 maintains junction temperature ≤105 °C on a 6 cm² copper pour (R_th-j-amb = 15 °C/W), while SO24 exceeds safe limits without forced air-requiring larger copper areas or heatsinks.

Does E-L6207D support fast-decay (anti-parallel) current recirculation mode?

No-the L6207D implements only slow-decay mode with synchronous rectification on the high-side during recirculation. Fast-decay (low-side recirculation) is not supported; the internal architecture forces current through the upper MOSFET path after t_OFF, minimizing power loss but limiting maximum PWM frequency in high-inductance loads.