Toshiba Semiconductor and Storage TLP5774(D4,E

Overview

TLP5774(D4,E) from Toshiba Electronic Devices & Storage Corporation is a reinforced-insulation photocoupler integrating an infrared LED and high-speed photo IC in a 6-pin SO6L package. It delivers ±4.0 A peak output current, 150 ns max propagation delay, ±35 kV/µs common-mode transient immunity, and operates from -40°C to +110°C with 10–30 V supply voltage-designed for gate driving in industrial inverters and compact motor drivers.

For engineers reviewing the TLP5774(D4,E) datasheet, TLP5774(D4,E) pinout, TLP5774(D4,E) application, or TLP5774(D4,E) equivalent, key selection criteria include its rail-to-rail totem-pole output, low 2 mA max threshold input current enabling direct microcontroller drive, and VDE-certified EN IEC 60747-5-5 isolation compliance for safety-critical power conversion systems.

Technical Context

The TLP5774(D4,E) uses an internal Faraday shield to achieve guaranteed ±35 kV/µs common-mode transient immunity, critical for noise-immune operation in high-dv/dt environments like IGBT/SiC gate driving. Its totem-pole (buffer logic) output stage provides rail-to-rail swing and supports ±4.0 A peak source/sink capability at up to 50 kHz switching frequency.

This device implements UVLO with 9.5 V turn-on and 7.5 V turn-off thresholds, ensuring robust power sequencing. The D4 option confirms qualification to EN IEC 60747-5-5 for reinforced insulation, including validated creepage/clearance ≥8.0 mm and internal isolation thickness ≥0.4 mm per IEC standards.

Key Specifications

Pinout & Package

Package: 6-pin SO6L (Toshiba package code 11-4N1A), surface-mount, creepage/clearance ≥8.0 mm, height ≤2.3 mm, weight 0.126 g (typ).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP5772(D4,E), the TLP5774(D4,E) delivers 60% higher peak output current for robust SiC gate driving; versus ACPL-332J-000E, it provides 2.3× higher CMTI and full rail-to-rail totem-pole output-making it uniquely suited for high-reliability industrial inverter gate drive.

Availability

TLP5774(D4,E) is available at Aetrix Electronics and suitable for photovoltaic power conditioning systems, industrial inverters, and compact motor drivers requiring stable component supply, long-term lifecycle support, and VDE-certified reinforced insulation.

Supply support for TLP5774(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 is a Japanese semiconductor manufacturer specializing in power devices, logic ICs, and optoelectronics with over 50 years of reliability engineering heritage.

The TLP577x series was developed specifically for high-noise industrial gate driving applications, emphasizing reinforced insulation, ultra-high CMTI, and direct microcontroller compatibility without external buffering.

FAQ

What safety certifications apply to the TLP5774(D4,E)?

The TLP5774(D4,E) is certified to EN IEC 60747-5-5 (VDE) for reinforced insulation, UL 1577 (File E67349), cUL CSA Component Acceptance (File E67349), and CQC GB4943.1. The "D4" suffix explicitly denotes qualification to the EN IEC 60747-5-5 standard, including validated creepage, clearance, and internal isolation thickness per IEC test procedures. This makes the TLP5774(D4,E) suitable for use in safety-critical PV inverters and industrial drives requiring double/reinforced insulation.

Does the TLP5774(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 the pins. This capacitor stabilizes the internal high-gain amplifier and prevents oscillation or improper switching behavior. Without it, the TLP5774(D4,E) may fail to switch reliably under load, especially at high frequencies or elevated temperatures. The requirement is specified in both the Recommended Operating Conditions and Internal Circuit sections of the official Toshiba datasheet for TLP5774(D4,E).

Can the TLP5774(D4,E) directly drive SiC MOSFET gates?

Yes - the TLP5774(D4,E) delivers ±4.0 A peak output current and 150 ns max propagation delay, making it suitable for direct gate driving of discrete SiC MOSFETs up to ~600 V/50 A class. Its rail-to-rail totem-pole output ensures full VCC-level turn-on and GND-level turn-off, while ±35 kV/µs CMTI prevents false triggering during fast SiC switching transitions. For higher gate charge devices (>350 nC), verify layout parasitics and thermal limits per the TLP5774(D4,E) absolute maximum ratings.

What is the function of Pin 2 on the TLP5774(D4,E)?

Pin 2 on the TLP5774(D4,E) is designated N.C. (No Connection) and must remain unconnected in all applications. It is not internally bonded and serves no electrical function. Connecting Pin 2 to any node - including ground, supply, or signal - violates the device's qualified design and may compromise isolation integrity, CMTI performance, or long-term reliability. This requirement is explicitly stated in the Pin Assignment section of the Toshiba datasheet for TLP5774(D4,E).

How does the UVLO feature operate in the TLP5774(D4,E)?

The TLP5774(D4,E) incorporates under-voltage lockout (UVLO) with a 9.5 V turn-on threshold and 7.5 V turn-off threshold, providing 2.0 V hysteresis. When VCC drops below 7.5 V, the output is forced low to prevent undefined gate states; it resumes normal operation only after VCC rises above 9.5 V. This protects power switches from partial turn-on during brown-out conditions and is intrinsic to the TLP5774(D4,E)'s internal regulator - no external components are needed to enable UVLO functionality.