Toshiba Semiconductor and Storage TLP5774(E

Overview

TLP5774(E) from Toshiba Electronic Devices & Storage Corporation is a high-speed, reinforced-insulation photocoupler integrating an infrared LED and a photo IC with totem-pole output stage. It delivers ±4.0 A peak output current, 150 ns max propagation delay, ±35 kV/µs common-mode transient immunity, and operates across -40°C to +110°C - enabling direct microcontroller drive in industrial inverters and compact motor drivers.

For engineers reviewing the TLP5774(E) datasheet, TLP5774(E) pinout, TLP5774(E) application, or TLP5774(E) equivalent, this device is selected for high-noise industrial power control where rail-to-rail output, low 2 mA threshold input current, and certified 5000 Vrms isolation are critical design requirements.

Technical Context

The TLP5774(E) implements a monolithic photodetector IC with internal Faraday shield and integrated high-gain amplifier, delivering logic-compatible totem-pole output without external buffers. Its internal architecture supports rail-to-rail switching (VOH ≥ 7.5 V, VOL ≤ 0.2 V at rated load) and features under-voltage lockout (UVLO) with 9.5 V turn-on and 7.5 V turn-off thresholds.

It meets reinforced insulation per EN IEC 60747-5-5 (with D4 option), UL 1577, and CSA Component Acceptance standards. The device requires a mandatory 1 µF ceramic bypass capacitor between VCC (Pin 6) and GND (Pin 4) to stabilize high-gain operation and ensure reliable switching under fast transients.

Key Specifications

Pinout & Package

Package: SO6L (Toshiba package code 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 high-speed gate drive isolation applications.

Compared with TLP5774(E), TLP5772(E) trades output drive strength and speed for lower cost, while Si8273ABD-IS offers superior timing performance and lifetime stability at the expense of added design complexity and absence of integrated UVLO.

Availability

TLP5774(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 certified reinforced insulation.

Supply support for TLP5774(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 and manufactures high-reliability semiconductor components for industrial, automotive, and power electronics applications, with global manufacturing and quality certifications.

The TLP5774(E) belongs to Toshiba's high-speed photocoupler product line, engineered specifically for robust gate driving in industrial motor control, solar inverters, and servo amplifiers where safety-certified isolation and noise immunity are non-negotiable.

FAQ

What is the required bypass capacitor for TLP5774(E), and why is it mandatory?

A 1 µF ceramic capacitor must be placed between Pin 6 (VCC) and Pin 4 (GND) within 1 cm of the device. This capacitor stabilizes the internal high-gain amplifier and prevents oscillation or mis-switching under fast transients. Omitting it risks unreliable output behavior, especially during high-frequency PWM operation - a design requirement explicitly stated in the TLP5774(E) datasheet Section 6 and Section 9.

Does TLP5774(E) support direct connection to 3.3 V microcontrollers?

Yes. The TLP5774(E) has a maximum threshold input current of 2 mA and typical forward voltage of 1.65 V, allowing direct connection to 3.3 V GPIO pins using a ~1 kΩ series resistor. This eliminates level shifters or buffer stages - confirmed in Section 2 ("bufferless direct drive from a microcomputer") and Section 3, Feature (6).

What safety certifications apply to TLP5774(E), and how do they differ from the D4 option?

The base TLP5774(E) is UL 1577 and CSA recognized. For EN IEC 60747-5-5 compliance (reinforced insulation), the D4 option must be specified (e.g., TLP5774(D4-TP,E)). The D4 variant undergoes additional testing per Clause 5.5 and carries distinct marking - critical for CE-marked industrial equipment requiring harmonized European safety standards.

Can TLP5774(E) drive both N-channel and P-channel MOSFET gates?

Yes. The TLP5774(E) provides true totem-pole output capable of sourcing and sinking up to ±4.0 A, enabling direct drive of either N-channel (high-side, with bootstrap) or P-channel (low-side) power switches. Its rail-to-rail VO output (Section 3, Feature 1 and Electrical Characteristics Table) ensures full logic swing across the 10–30 V supply range.

What is the meaning of "N.C." on Pin 2 of TLP5774(E), and how should it be handled on the PCB?

Pin 2 is No Connection - internally unconnected and electrically isolated. It must remain unconnected on the PCB: no trace, via, or copper pour may contact it. This is explicitly defined in Section 5 (Pin Assignment) and Section 8 (Absolute Maximum Ratings Note 4), where Pins 1/2/3 are grouped only for thermal/mechanical modeling, not electrical connectivity.