Monolithic 2.5-MHz step-down DC/DC converter withstands 80-V transients
April 20, 2012 // Paul Buckley
Linear Technology Corporation has released a 60 V IN step-down switching regulator that can deliver dual 1 A outputs. The LT3988 operates within a V IN range of 4 V to 60 V, with overvoltage lockout protection against transients of 80 V.
The device is ideal for load dump and cold-crank conditions commonly found in automotive applications.
The LT3988 can be driven by two separate input rails or by a single input, maximizing design flexibility. Its internal 1.3 A switches deliver up to 1 A of continuous output current. Switching frequency is user-programmable from 250 kHz to 2.5 MHz, enabling the designer to maximize efficiency, while avoiding critical noise-sensitive frequency bands. The combination of its thermally enhanced MSOP-16E package and high switching frequency, which keeps the external inductor and capacitors small, provides a compact, thermally efficient footprint.
The LT3988 utilizes dual, high efficiency 1.3 A switches, with the necessary boost diodes, oscillator, control and logic circuitry integrated into a single chip. Its catch diode current sense (DA) pins protect the circuit during input voltage transients even at high switching frequencies while adding robust short-circuit protection. Anti-phase switching minimizes both input and output ripple. Special design techniques used in the LT3988 enable high efficiency over a wide input voltage range, and the device’s current mode topology enables fast transient response and excellent loop stability. Other features include external synchronization (from 250 kHz to 2.5 MHz), internal loop compensation, thermal shutdown and tracking capability.
More information about the LT3988 at www.linear.com/product/LT3988
MEMS leaders under pressure, says Yole
July 31, 2014
The MEMS industry is changing as established leaders with manufacturing and an emphasis on delivering components are put ...
OLED lighting to be competitive with LEDs by 2016
Panasonic and Tesla Gigafactory battery plan forges ahead
Surface inspection tool can get customized
Wireless charging - a more cost-effective approach
Sony, Panasonic, Japan Display plan OLED joint venture
July 30, 2014
Sony Corp., Panasonic Corp., and Japan Display Inc. are working together to create a new company, to be named JOLED, which ...
Sony, TSMC win award for silicon-plastic process development
Sensor footprint evolution: Does size matter?
Memscap breaks even on rising Q2 revenue
- Building Blocks for the Internet of Things
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
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, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
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.