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电子发烧友网>电子资料下载>IC datasheet pdf>X80010, X80011 pdf datasheet (

X80010, X80011 pdf datasheet (

2009-01-11 | rar | 548 | 次下载 | 免费

资料介绍

The X80010, X80011, X80012, X80013 contain three major
functions: a power sequencing controller, a hotswap
controller, and systems management support.
The power sequencer controller time sequences up to five
DC/DC modules. The device allows various DC/DC power
sequencing configurations, either parallel or relay modes.
The power good, enable, and voltage good signals provide
for flexible DC/DC timing configurations. Each voltage
enable signal has a built-in delay while additional delay can
be added with simple external passive components.
The hot swap controller allows a board to be safely inserted
and removed from a live backplane without turning off the
main power supply. The X80010 family of devices offers a
modular, power distribution approach by providing flexibility
to solve the hotswap and power sequencing issues for
insertion, operations, and extraction. Hardshort Detection
and Retry with Delay, Noise filtering, Insertion Overcurrent
Bypass, and Gate Current selection are some of the
integrated features of the device. During insertion, the gate
of an external power MOSFET is clamped low to suppress
contact bounce. The undervoltage/overvoltage circuits and
the power on reset circuitry suppress the gate turn on until
the mechanical bounce has ended. The X80010 turns on the
gate with a user set slew rate to limit the inrush current and
incorporates an electronic circuit breaker set by a sense
resistor. After the load is successfully charged, the PWRGD
signal is asserted; indicating that the device is ready to
power sequence the DC/DC power bricks.
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