Toshiba Semiconductor and Storage TLP5751(D4,E

Overview

TLP5751(D4,E) from Toshiba Electronic Devices & Storage Corporation is a high-speed, reinforced-insulation photocoupler with integrated photo-IC output stage, designed for gate driving of power MOSFETs and IGBTs in industrial inverters and home appliance motor controls. It delivers ±1.0 A peak output current, 150 ns max propagation delay, ±35 kV/µs common-mode transient immunity, and operates across –40 °C to +110 °C with 15–30 V supply voltage.

For engineers reviewing the TLP5751(D4,E) datasheet, TLP5751(D4,E) pinout, TLP5751(D4,E) application, or TLP5751(D4,E) equivalent, this device is selected for high-noise industrial motor drives requiring rail-to-rail output, safety-certified isolation (5000 Vrms), and compact SO6L packaging - critical for space-constrained induction cooktop and air conditioner inverter designs.

Technical Context

The TLP5751(D4,E) integrates an infrared LED input stage with a monolithic high-gain photodetector and totem-pole buffer output, enabling direct drive of power semiconductor gates without external amplification. Its internal Faraday shield ensures robust noise rejection in high-dV/dt environments typical of switching power stages.

This variant includes the D4 option per EN IEC 60747-5-5, certifying compliance with reinforced insulation requirements for functional safety applications. The device requires a 1 µF bypass capacitor between VCC (Pin 6) and GND (Pin 4) to stabilize high-gain operation and prevent oscillation under fast transients.

Key Specifications

Pinout & Package

Package: SO6L (TOSHIBA 11-4N1A), surface-mount, 6-pin, creepage/clearance ≥8.0 mm, isolation thickness ≥0.4 mm, height ≤2.3 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar photocoupler-based gate driver applications.

Compared with ACPL-332J-000E and SI8261AD-D-IS, the TLP5751(D4,E) uniquely combines D4-certified reinforced insulation, rail-to-rail totem-pole output, and SO6L compactness - making it optimal for cost-sensitive, space-constrained, and safety-regulated inverter gate drive where simplicity and certification readiness are prioritized.

Availability

TLP5751(D4,E) is available at Aetrix Electronics and suitable for induction cooktop control, industrial inverter drives, and air conditioner inverter applications requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for TLP5751(D4,E) 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

Toshiba Electronic Devices & Storage Corporation designs high-reliability semiconductor components for industrial, automotive, and consumer power systems, with emphasis on safety, efficiency, and miniaturization.

The TLP5751 series belongs to Toshiba's high-speed photocoupler product line, engineered specifically for isolated gate driving in noise-prone inverter applications - balancing performance, safety certification, and board-space efficiency.

FAQ

What safety certifications apply to the TLP5751(D4,E)?

The TLP5751(D4,E) carries the D4 option per EN IEC 60747-5-5, confirming reinforced insulation qualification. It is also UL-recognized (UL 1577, File No. E67349), cUL-recognized (CSA 5A File No. E67349), and CQC-approved (GB4943.1). These certifications validate its use in safety-critical applications such as industrial inverters and home appliance motor drives without requiring additional isolation components.

Why is a 1 µF capacitor required between Pin 6 (VCC) and Pin 4 (GND) for the TLP5751(D4,E)?

A 1 µF ceramic capacitor must be placed between Pin 6 (VCC) and Pin 4 (GND) within 1 cm to stabilize the internal high-gain amplifier and suppress oscillation during fast switching transients. Without this capacitor, the TLP5751(D4,E) may exhibit erratic output behavior or fail to switch reliably - especially under high common-mode noise or rapid load changes in inverter gate drive applications.

Can the TLP5751(D4,E) drive both MOSFETs and IGBTs directly?

Yes, the TLP5751(D4,E) can directly drive both MOSFETs and IGBTs thanks to its ±1.0 A peak output current and rail-to-rail totem-pole output stage. Its 15–30 V supply range aligns with standard gate driver voltages, and its 150 ns max propagation delay supports PWM frequencies up to 50 kHz - making it suitable for medium-power switching devices in induction cooktops, HVAC inverters, and industrial motor drives.

What is the purpose of Pin 2 (N.C.) on the TLP5751(D4,E)?

Pin 2 on the TLP5751(D4,E) is a no-connect (N.C.) terminal - internally unconnected and electrically isolated from all other pins. It must remain floating on the PCB: no trace, pad, or solder connection should be made. This pin exists for mechanical symmetry and package compatibility but contributes no electrical function in the TLP5751(D4,E) circuit operation.

How does the TLP5751(D4,E) handle undervoltage conditions?

The TLP5751(D4,E) incorporates integrated undervoltage lockout (UVLO) that disables the output when VCC drops below ~11.1 V (VUVLO−) and re-enables it above ~12.1 V (VUVLO+). This hysteresis prevents unstable or partial gate drive during power-up, brown-out, or supply sag - ensuring clean, deterministic switching behavior and protecting downstream power devices from partial conduction in systems using the TLP5751(D4,E).