High-reliability version for no-opto isolated monolithic flyback regulator
May 05, 2011 // Christoph Hammerschmidt
Linear Technology has announced a high reliability (MP-grade) version of the LT3511, a high voltage isolated monolithic flyback regulator that operates over a -55 °C to 150 °C junction temperature range. The device simplifies the design of an isolated DC/DC converter since, Linear claims.
The LT3511 does not require an optocoupler, third winding or signal transformer for feedback, as the device's output voltage is sensed from the primary-side flyback signal. The LT3511 operates over a 4.5 V to 100 V input voltage range, has a 240 mA, 150 V onboard power switch and delivers up to 2.5 W, making it well suited for a wide variety of telecom, datacom, automotive, industrial and medical applications.
The LT3511 operates in a boundary mode, a current-mode control switching scheme, resulting in ±5% typical regulation over the full line, load and temperature range. Boundary mode, also known as critical conduction mode (CrCM), permits the use of a smaller transformer compared to equivalent continuous conduction mode designs. The output voltage is easily set by two external resistors and the transformer turns ratio. Several transformers identified in the data sheet can be used for numerous applications. Additional features include an onboard low dropout regulator for IC power, undervoltage lockout and output voltage temperature compensation. The high level of integration results in a simple, clean, tightly regulated solution for isolated power delivery.
The LT3511MPMS is available in a small MSOP-16 package with 4 pins removed for additional high voltage pin spacing. Pricing starts at $8.95 each in 1000-piece quantities. For more information, visit www.linear.com/product/LT3511.All news
Switch to LED lighting cuts cruising energy costs by 60 percent
February 27, 2015
Europe’s leading holiday cruise company, Costa Cruises has upgraded ten of the company's fleet of cruise liners with more ...
Semitrex' ultimate goal: "one size fits all" power conversion
Porsche rainmaker advocates platooning
Radar-based sensor network helps drivers finding a parking spot
Xilinx flexes its muscles in the ADAS arena
The future of custom ASICs
February 26, 2015
With the prevailing view that Moore's Law is slowing Donnacha O’Riordan, director of services strategy for S3 Group, gives ...
Dual nanowire structure absorbs light efficiently
5 trends to watch at Mobile World Congress
Infineon: CAN FD success goes at the expense of FlexRay
- Software-Defined Radio Handbook
- A Four-Quadrant DC/DC Switching Regulator Smoothly Transitions from Positive to Negative Output Voltages for FPGA and Other Applications
- LED Driver with Integrated Spread Spectrum Reduces EMI without Adding Flicker
- Accelerate SDN and NFV with Off-the-Shelf Software
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
To ensure you have a good start in 2015, Freescale is giving away five of its QorIQ TWR-LS1021A Tower system modules, worth USD269 each, for EETimes Europe's readers to win.
The module is the most feature-rich and high-performance Tower system offered by Freescale, enabling compatibility and interoperability with the growing list of Tower expansion modules, offering an easily accessible...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.