Date: 06/05/2010

Intelligent power switch (IPS) from ST Micro for use in industrial controls

STMicroelectronics has introduced an intelligent power switch (IPS) based on its VIPower technology for use in industrial controls. It allows a lower overload current limit, which allows the device to maintain stable power conditions while system is recovering. The VNI2140J is two channel IC and has a space-saving 6x5mm footprint suitable for Programmable Logic Controllers (PLCs). It integrates all the necessary logic, driver circuitry, power stage, protection, and diagnostic functions. The chip's inputs are 3.3V TTL/CMOS compatible and its outputs are connected in the high-side configuration and two independent resistive, inductive or capacitive loads can be driven.

The chip's built-in shorted-load protection with independent active current limitation for each channel helps in preventing load faults by turning of the channel once a channel is found to be in an overload condition and is restarted immediately once normal temperature is restored. If both channels are overloaded, they are restarted non-simultaneously to avoid drawing high peak currents from the power supply.

It provides protection against loss of ground, as well as diagnostics such as open-load detection in the OFF state, which helps to deliver rugged, highly featured solutions. Other technical features include 9V to 36V supply voltage, 0.08 Ohms RDS(ON) for high efficiency in normal operation, nominal current of 0.5A per channel, Output current limit is greater than 1A per channel, fast demagnetization of inductive loads, conforms to IEC 61131-2 for programmable controllers,

Package: PowerSSO-12 package

Price: VNI2140J is priced at $1.50 for quantities of 100 pieces

Availability: Now

For more information visit: www.st.com.