Geneva, Switzerland STMicroelectronics has released the VNI4140K quad high-side intelligent power switch (IPS), which is produced using the latest generation of ST's VIPower technology to achieve a 50 percent savings in Rds(on) compared to earlier devices with the same die size.
The significant reduction in on-resistance and quiescent current saves energy through lower losses, with device power consumption lower than any competitive product, and at a lower cost, according to ST. Power consumption is cut by 40% compared to earlier generation VIPower devices. In addition, by optimizing the trade-off between Rds(on) and die size, the VNI4140K can be produced in a compact PowerSSO24 package to save space.
IPS devices integrate a logic interface, drivers and protection circuits on the same chip as a power stage to simplify system design and save space in high-power industrial applications such as programmable logic controllers (PLCs), NC (numerical control) machines, robotics and building automation systems.
The VNI4140K adds two new protection features per-channel diagnostic bits and double thermal protection together with a broad range of current and thermal protection features typically offered by ST's IPS devices. In addition to over-temperature protection for safe operation when current draw is too high, the switch's case over-temperature protection independently limits the PCB temperature. Channels restart independently after a case thermal shut-down to limit the peak current.
The VNI4140K provides short-circuit and over-current protection, under-voltage shut-down, fast demagnetization for safe operation with large inductive loads, and protection against loss of ground. Diagnostic outputs are open drain to enable wired-OR configuration with other devices, and the logic inputs are 3.3-V CMOS/TTL compatible. The switch conforms to the IEC 61131-2 standard for programmable logic devices.
Pricing: $1.80 in quantities of 10,000.
Availability: Engineering samples are available now, with volume production planned for January 2008.
Product information: VNI4140K
STMicroelectronics, Inc., 1-781-861-2650, www.st.com