Product category:
Power Supply ICs and Controllers
News Release from: Micrel | Subject: MIC2596 and MIC2597
Edited by the Electronicstalk Editorial
Team on 14 May 2001
Hot-swap power controllers integrate
MOSFETs
A highly integrated family of -70V hot-swap power controllers designed especially for telecomms switch applications is now available from Micrel Semiconductor.
A highly integrated family of -70V hot-swap power controllers designed especially for telecomms switch applications is now available from Micrel Semiconductor Manufactured in 20-pin TSSOP and thermally enhanced TSSOP packages, the MIC2596 and MIC2597 incorporate two completely independent -70V channels
This article was originally published on Electronicstalk on 5 Dec 2000 at 8.00am (UK)
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Each channel integrates a high-voltage mosfet with adjustable current limiting.
This combination reduces board space and allows the designer to optimise the design without compromising performance.
System reliability is increased by on-chip overcurrent and overtemperature shutdown capabilities which provide robust short-circuit protection.
The two channels are thermally isolated so that a fault in one channel does not affect the other.
Additionally, on/off control and fault status signals are logic-compatible, eliminating the need for extra buffer and translation circuits.
In addition, the MIC2596 and MIC2597 can detect open-load conditions when a cable or line card is removed.
The two devices differ only in the way they handle overcurrent conditions.
The MIC2596 incorporates an auto-retry feature that will continuously attempt to restart the load in the event of a fault condition.
The MIC2597 operates as a circuit breaker, latching off in the event of a fault condition.
At a nominal 48V the devices can provide over 15W per channel with the standard TSSOP package (BTS) and more than 30W per channel with the exposed pad TSSOP package (BTSe).
"Micrel designed the MIC2596 and MIC2597 to address emerging telecomms switch and line card applications that distribute small amounts of power within very stringent space and cost constraints", said Larry Mazer, product marketing manager for Micrel.
"The two devices eliminate many of the cost and space problems associated with other telecomms hot swap solutions.
They are designed for easy use with no compromise in performance", Mazer said.
The MIC2596-1/-2BTS and MIC2597-1/-2BTS available now in 20-pin TSSOP for $4.00 when purchased in 1000-piece quantities.
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