Versatile 5-A DC/DC converter generates either a positive or a negative regulated voltage
June 15, 2010 // Paul Buckley
Linear Technology Corporation has unveiled a versatile DC/DC converter for boost, flyback, SEPIC and inverting power supply applications.
The LT3957 operates over an input voltage range of 3 V to 40 V, has an onboard 5 A/40 V power switch and achieves efficiencies up to 96 percent, making it well suited for industrial, automotive, medical and telecom applications.
The LT3957 can generate either a positive or negative regulated output voltage with its two internal voltage feedback error amplifiers and reference voltages. One set is for positive output voltages and the other is for negative output voltages, both off a single feedback pin. With a programmable fixed or synchronizable operating frequency from 100 kHz to 1 MHz, designers can choose a wide range of inductors and capacitors to optimize size, performance and cost. Its current-mode control results in stable operation over a wide range of supply and output voltages. The device supports designs using only ceramic capacitors, enabling a smaller solution size. Additional features include programmable soft-start, adjustable input undervoltage lockout, as well as output overvoltage and overcurrent protection.
The LT3957 operates from a -40 to 125 degrees C temperature range and is offered in a 5 mm x 6 mm QFN-36 package with additional pin spacing to support high voltage operation. The 1000-piece price starts at 2.95 US Dollars each.
A clean MIPS slate for academia
April 27, 2015
By letting universities study its MIPS RTL code and explore a real working MIPS CPU, Imagination Technologies seeks academia's ...
Design win; IDT meets IKEA
Eurotech to offload its cloud offering to iNebula
Electric vehicles: Driving range decides
Samsung details its flex display
3D-printing aerogels for energy storage
April 24, 2015
Lawrence Livermore National Laboratory researchers have developed graphene aerogel microlattices with an engineered architecture ...
Gartner lowers 2015 chip market growth forecast
Hexagon, Xylon join forces for smart CT-based quality control systems
PSA, IBM tie Connected Car to the Internet of Things
- Smart Capacitive Design Tips
- Wireless MCUs and IoT
- Battery Management System Tutorial
- Deciding if Automated Test is right for your Company
InterviewInfineon: CAN FD success goes at the expense of FlexRay
The faster version of the venerable CAN bus, CAN FD is currently taking off at several carmakers. Infineon's Thomas Böhm, Head of Body / Automotive, believes this could well go at the expense of FlexRay. ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, DecaWave is offering EETimes Europe's readers the chance to win two TREK1000 kits to evaluate its Ultra-Wideband (UWB) indoor location and communication DW1000 chip in different real-time location system topologies.
Worth €947, the kit allow designers to prove a concept within hours and have a prototype ready in days. Based on the two-way ranging scheme, the kit lets you test...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.