Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
?
EE Times-Asia > Amplifiers/Converters
?
?
Amplifiers/Converters??

DC/DC converters have synchronous rectifying system

Posted: 22 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:DC/DC converters? control ICs? controller?

Sanyo's new step-down DC/DC converter control ICs, adopting synchronous rectifying system, are power ICs incorporating numerous functions on a single chip with easy external setting.

The devices are designed for use in multi-output power supply systems such as those found in LCD TVs, DVD recorders, game machines and high-end-office products.

The low voltage, high current output LV5044 chip is a two-circuit step-down DC/DC converter controller with input UVLO circuit, overcurrent detection circuit, soft start/soft stop control and start delay circuit. It has an output voltage monitoring (power good, UVP with timer latch) and a 180 interleave operation across phases 1 and 2. The DC/DC converter with SSOP30 housing offers externally synchronized operation (supports master/slave operation when two or more devices are used).

Included in the new offering is the low voltage, high current output LV5050 step-down DC/DC converter controller with 1ch. The device features an input UVLO circuit. The chip offers several built-in functions such as overcurrent detection circuit, soft start/soft stop function, start-up delay circuit and output voltage monitor function (under voltage protection with power good and time latch).

Completing the list is the low voltage, high current output LV5043V two-channel, synchronous rectifying, step-down DC/DC converter controller. LV5043V features an input UVLO circuit, overcurrent detection circuit, soft start/soft stop control and start delay circuit. It offers output voltage monitoring (power good, UVP with timer latch) as well as 180 interleave operation across phases 1 and 2. The device, packaged in SSOP30, allows externally synchronized operation (supports master/slave operation when two or more devices are used.




Article Comments - DC/DC converters have synchronous re...
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.

?
?
Back to Top