 | Author | Message | | | yangandjiao | | Posted: Wed Jul 16, 2008 9:07 am Post subject: TPS40050 datasheet | | | | Joined: 23 Apr 2008 Posts: 65 | DESCRIPTION(TPS40050 datasheet and pdf download)
The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters.The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed-forward, high-side current limit, and loop compensation.The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier
(SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous
high-side and synchronous rectifier conduction.The TPS4005x uses voltage feed-forward control
techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients with near constant gain with input variation which eases loop compensation.The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation utilizing an internal fault counter for longer duration overloads. | |
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