International Rectifier ( IR ), a global leader in power semiconductors and management solutions, introduces the Sup IR Buck integrated point-of-load (POL) regulator family in a 4x5 mm package. The new devices are ideal for energy-efficient servers, storage systems, telecommunications systems, network communications and set-top box applications, providing the same efficiency and functionality as previous generation devices, but with a 33% reduction in footprint.
The IR 3853, IR3856, and IR3859 SupIRBuck regulators integrate high-performance controllers and IR's latest MOSFETs in a 4x5 mm ultra-thin PQFN package to deliver 4 A, 6 A, and 9 A output currents, respectively, to over 96 % peak efficiency. New features include overvoltage protection and external synchronization options to reduce noise and EMI in multi-rail systems, as well as accurate output voltage detection options tailored for adjustable PGOOD and OV thresholds.
The new device eliminates the need for traditional two-stage POL conversion and saves energy and reduces size and cost by operating directly from 12 Vin. While optimized for 12 V input voltage, these devices also enable superior efficiency in 5 V monorail input voltage applications. With a programmable switching frequency of up to 1.5 MHz and a footprint of only 4x5 mm, the new regulator not only reduces size and cost, but also achieves higher power density. In addition, the versatile footprint of these devices provides design flexibility and allows for clip layouts to speed time to market.
Pan Dawei, vice president of sales for IR Asia Pacific, said: "The IR3853, IR3856 and IR3859 series offer the same efficiency and functionality as the previous generation SupIRBuck devices, and can reduce footprint by 33% and significantly reduce board size, making them fully suitable for use. Space-constrained POL applications. At the same time, the new SupIRBuck series offers smaller and more cost-competitive solutions below 9 amps."
The SupIRBuck family also features programmable interrupt current limiting, programmable soft-start, enhanced pre-bias startup, temperature protection, enable pins with voltage sensing, power-good outputs for undervoltage and overvoltage detection, and The 0-125°C temperature range has a 0.7 V reference voltage of + / - 1% accuracy and a working junction temperature of -40oC to 125oC.
Design Tools
The new SupIRBuck point-of-load regulator is now available in volume orders. Relevant data and application notes are available on the IR website at At the same time, IR also prepared reference designs for IRDC3853, IRDC3856 and IRCD3859 SupIRBuck for request.
push switch socket, wall swich socket, high quality switch socket
Guangdong Shunde Langzhi Trading CO., Ltd , https://www.langzhielectrical.com