STMicroelectronics L6207PD

Overview

L6207PD 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, 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 L6207PD datasheet, L6207PD pinout, L6207PD application, or L6207PD equivalent, this device is selected for precision current-regulated motion control in industrial automation, robotics, and embedded positioning systems where high-side bootstrap drive, slow-decay synchronous rectification, and independent bridge enable/control are required.

Technical Context

The L6207PD integrates two fully independent DMOS full bridges in BCD technology, each with dedicated constant t_OFF PWM current regulation using external RC networks on RCA/RCB pins. Current sensing occurs via internal high-side current mirrors-eliminating external sense resistors-and triggers open-drain fault signaling on ENA/ENB pins when output current exceeds 5.6 A.

It employs deadtime-controlled cross-conduction prevention (1 µs typical), bootstrapped high-side gate drive (VBOOT, 600 kHz charge pump), and slow-decay mode with synchronous rectification. Logic inputs are TTL/CMOS compatible with hysteresis (0.5 V typ.), and thermal shutdown activates at 165 °C.

Key Specifications

Pinout & Package

Available in PowerSO-36 package (exposed slug thermally connected to GND pins 1, 18, 19, 36), optimized for high-power motor drive with low junction-to-case thermal resistance (1 °C/W).

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 L6207PD uniquely combines dual independent PWM current control, non-dissipative overcurrent protection, and slow-decay synchronous rectification in one PowerSO-36 package-making it optimal for compact, thermally demanding, current-regulated dual-motor systems.

Availability

L6207PD is available at Aetrix Electronics and suitable for industrial automation, robotics, and lab instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for L6207PD 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, specializing in power management, motor control, and automotive-grade ICs with vertical manufacturing capability.

The L6207PD belongs to ST's L62xx family of intelligent motor drivers-designed specifically for high-efficiency, current-accurate, thermally robust motion control in industrial and embedded systems.

FAQ

What is the purpose of the VBOOT and VCP pins?

VBOOT supplies the boosted gate voltage required to drive the high-side N-channel MOSFETs above the main supply rail. VCP is the internal charge pump oscillator output (600 kHz, 10 V amplitude) that, together with external components (220 nF capacitor, 100 Ω resistor, and two 1N4148 diodes), generates the VBOOT voltage. This eliminates need for external high-voltage gate drivers.

Can L6207PD operate without external sense resistors?

Yes. The L6207PD uses internal high-side current mirrors for overcurrent detection and PWM regulation, making external sense resistors optional. SENSEA/SENSEB pins may be left unconnected when using internal sensing. External resistors are only needed if higher accuracy or custom current scaling is required.

How does the non-dissipative overcurrent protection work?

Each high-side DMOS transistor includes a precision current mirror that delivers ~1/1000 of its output current to the ENA/ENB pin. When mirrored current exceeds 4 mA (corresponding to ~5.6 A load current), an internal open-drain transistor pulls the EN pin below 1.3 V, disabling the bridge. No external sense resistor dissipates power during fault detection.

What thermal considerations apply to the PowerSO-36 package?

The PowerSO-36 package has a 1 °C/W junction-to-case thermal resistance. To maintain T_j ≤ 125 °C at 2.8 A DC, the PCB must provide ≥15 °C/W junction-to-ambient resistance-achievable with ≥6 cm² copper pour on top layer, 16 thermal vias, and internal ground plane, per ST's AN4607 guidelines.