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Low PWD IC Photocouplers for IPM Drives: TLP2745, TLP2748

2015-07-24 | Return

Toshiba has launched two photocoupler products: TLP2745/TLP2748, which are for Intelligent Power Module (IPM) drives, featuring low Pulse Width Distortion (PWD), high speed, high temperature operation, and low power consumption.

TLP2745 is a buffer logic type (high input → high output) whereas TLP2748 is an inverter logic type (high input → low output).

By adopting the SO6L package, creepage distance of 8 mm and isolation voltage of 5000 Vrms are guaranteed. Although their thickness is only 2.3 mm.

Demand in recent years for energy-saving products has brought about the need for increasingly efficient power systems used for various applications including industrial inverters, industrial sewing machines, and power conditioners. By featuring the high speed of 120 ns (max) propagation delay time for higher operational efficiency and guaranteeing 40 ns (max) pulse width distortion and 70 ns (max) propagation delay skew, TLP2745/TLP2748 allow the reduction of inverter dead time, contributing to the improvement of power efficiency. In addition, by guaranteeing a threshold input current of 1.6mA (max), they allow bufferless direct drive from microcomputers, and reduction of energy consumption and costs of equipment systems housing photocouplers.

By featuring high-temperature operation and a wide supply voltage range (VCC=4.5 to 30 V) all in a compact package, these products are suited not only to IPM drives but also to communication interfaces (such as RS232, RS422, and RS485) including for industrial applications, and data transmission solutions between circuits with different voltages.

Applications/ Features

Applications
FA (for IPM drive)
High-speed digital interface for measurement or control devices
Programmable logic controllers

Features
Operating temperature range: -40 to 110 °C
Data transfer rate: 10 Mbps (typ.) (NRZ)
Threshold input current: 1.6 mA (max)
Supply current: 3 mA (max)
Common mode transient immunity: ±30 kV/μs (min)

Outline Drawing/ Main Specifications

Outline drawing

Main specifications

Part number	Buffer logic	TLP2345	TLP2745*1
	Inverter logic	TLP2348	TLP2748*1
Package		5pin SO6	SO6L
Isolation voltage (min)		3750 V	5000 V
Supply voltage		4.5 to 30 V
Threshold input current　(max)		1.6 mA
Supply current　(max)		3 mA
Propagation delay time　(max)		120 ns
Pulse width distortion　(max)		40 ns
Propagation delay skew		±70 ns
Common-mode transient immunity　(min)		±30 kV/μs

*1: New product

Circuit Example

Source：http://www.semicon.toshiba.co.jp/eng/