Toshiba Semiconductor and Storage TLP5771(D4,E

Overview

TLP5771(D4,E) from Toshiba Electronic Devices & Storage Corporation is a reinforced-insulation photocoupler integrating an infrared LED and high-speed photodetector in a 6-pin SO6L package. It delivers ±1.0 A peak output current, 150 ns max propagation delay, and ±35 kV/µs common-mode transient immunity, enabling direct microcontroller drive in industrial inverters and compact motor drivers.

For engineers reviewing the TLP5771(D4,E) datasheet, TLP5771(D4,E) pinout, TLP5771(D4,E) application, or TLP5771(D4,E) equivalent, key selection criteria include its VDE-approved reinforced insulation (EN IEC 60747-5-5), rail-to-rail totem-pole output, low 2 mA max threshold input current, and compatibility with safety-critical PV power conditioning systems.

Technical Context

The TLP5771(D4,E) implements a buffer logic output stage with internal Faraday shielding to achieve guaranteed ±35 kV/µs common-mode transient immunity. Its totem-pole architecture provides rail-to-rail voltage swing (0.2 V low-level, 8.3 V high-level at 10 V supply) and supports bidirectional peak output currents of ±1.0 A.

This photocoupler operates across -40°C to +110°C with 10–30 V supply voltage and requires a mandatory 1 µF bypass capacitor between VCC (Pin 6) and GND (Pin 4). Its truth table confirms standard inverting logic behavior: LED ON → Output HIGH; LED OFF → Output LOW.

Key Specifications

Pinout & Package

Package: 6-pin SO6L (Toshiba package code 11-4N1A), surface-mount, 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 gate driver applications.

Compared with TLP5771(D4,E), the TLP5772(D4,E) offers channel doubling without footprint increase, while the Si827xAC-IS trades simplicity and safety certification for higher speed and output capability - requiring redesign of gate drive biasing and noise filtering.

Availability

TLP5771(D4,E) is available at Aetrix Electronics and suitable for photovoltaic power conditioning systems, industrial inverters, and AC servo applications requiring stable component supply with VDE-reinforced insulation certification.

Supply support for TLP5771(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 applications, with core expertise in power devices, logic ICs, and optoelectronics.

The TLP5771(D4,E) belongs to Toshiba's reinforced-insulation photocoupler product line, engineered specifically for safety-critical gate driving in industrial motor control and renewable energy systems where regulatory compliance and noise immunity are non-negotiable.

FAQ

What safety certifications apply to the TLP5771(D4,E)?

The TLP5771(D4,E) is VDE-approved per EN IEC 60747-5-5 (Option D4) and UL/cUL-recognized per UL 1577 (File E67349). It meets reinforced insulation requirements with 5000 Vrms isolation voltage and is certified for use in equipment requiring compliance with EN IEC 62368-1. The "(D4)" suffix explicitly denotes VDE qualification - critical for CE-marked industrial drives.

Does the TLP5771(D4,E) require an external bypass capacitor?

Yes - a 1 µF ceramic capacitor must be placed between Pin 6 (VCC) and Pin 4 (GND), located within 1 cm of both pins. This capacitor stabilizes the internal high-gain amplifier and prevents oscillation or improper switching. Omitting it violates the recommended operating conditions and may cause unreliable output transitions in the TLP5771(D4,E).

Can the TLP5771(D4,E) directly drive IGBT or MOSFET gates without external buffers?

Yes - the TLP5771(D4,E) delivers ±1.0 A peak output current and rail-to-rail voltage swing, enabling direct gate drive of low-to-medium-power IGBTs and MOSFETs (e.g., up to 600 V/30 A devices). Its low 2 mA max threshold input current allows direct connection to 3.3 V or 5 V MCUs without series resistors or level shifters.

What is the meaning of "(D4,E)" in the TLP5771(D4,E) part number?

"(D4,E)" indicates two specific options: "D4" denotes qualification to EN IEC 60747-5-5 for reinforced insulation (VDE approval), and "E" signifies RoHS-compliant, lead-free packaging. This exact variant is required for designs targeting European industrial safety standards and environmental compliance - distinct from base TLP5771(E) which lacks VDE certification.

How does the TLP5771(D4,E) achieve ±35 kV/µs common-mode transient immunity?

The TLP5771(D4,E) integrates an internal Faraday shield between its LED and photodetector die, physically blocking capacitive coupling of fast transients. This structure is validated per test method in EN IEC 60747-5-5 and guarantees minimum ±35 kV/µs immunity - a key enabler for reliable operation in noisy inverter leg environments where dV/dt exceeds 10 kV/µs.