Global Sources
EE Times-India
Stay in touch with EE Times India
 
EE Times-India > Power/Alternative Energy
 
 
Power/Alternative Energy  

MOSFET driver works without signal transformer

Posted: 10 Apr 2014     Print Version  Bookmark and Share

Keywords:Linear Technology  MOSFET  signal transformer  forward converter 

Linear Technology has announced a high efficiency secondary-side MOSFET driver that operates without the need for primary control in an isolated synchronous forward converter. According to the company, the LT8311's preactive mode cuts the need for a signal transformer for primary to secondary-side communication by sensing signals on the secondary side to control synchronous rectification. This mode reduces component count and solution size, added Linear Tech.

The device operates over a 3.7-30V input voltage range and is used with a primary-side IC, such as the LT3752/-1. The complete forward converter can operate with input voltages ranging from 6.5V up to 400V+ making it ideal for a range of applications including hybrid/electric vehicle automotive requirements. It combines a 10mA opto-driver and a feedback loop error amplifier to enable output voltage feedback from the secondary to the primary side.

LT8311

The entire system provides fixed frequency peak current mode control that has excellent line/load regulation and fast transient response. Additional features include a 1.5 per cent reference voltage, a power-good monitor and programmable soft-start of the output voltage.

The IC comes in a TSSOP-20 package with several pins removed for high peak-voltage spacing, in E- and I-grade (-40°C to 125°C junction temperature), H grade (-40°C to 150°C) and MP grade (-55°C to 150°C), from $3.06 (1000).

- Graham Prophet
  EE Times Europe





Comment on "MOSFET driver works without signal t..."
Comments:  
*  You can enter [0] more charecters.
*Verify code:
 
 
Webinars

Seminars

Visit Asia Webinars to learn about the latest in technology and get practical design tips.

 

Go to top             Connect on Facebook      Follow us on Twitter      Follow us on Orkut

 
Back to Top