Datasheet Microchip MIC2310 — Datenblatt

MIC2310
Single-FET, Constant Power-Limit Hot
Swap Controller General Description Features The MIC2310 is a single-channel, positive voltage,
constant power-limit hot swap controller designed to
provide for the safe insertion and removal of pc boards into
fixed, rack, and pedestal mid-or back-planes using few
external components. In addition, the MIC2310 employs a
patent-pending, output load power-limiting technique
where the current limit is inversely proportional to the
output load voltage, such that the power product will not
exceed the programmed power limit any longer than the
externally programmed primary overcurrent period. The
MIC2310 is ideally suited to address the power-limiting
and timing requirements per the UL60950 specification for
240-VA applications. The MIC2310 incorporates high-side
controller circuitry for an external N-channel MOSFET for
which the MOSFET drain current rate of change is userprogrammable via an external capacitor. The MIC2310
employs dual-speed, dual-level overcurrent fault
protection. The primary overcurrent detector response time
is programmable via an external current sense resistor and
the secondary overcurrent detector is 2-bit userprogrammable and exhibits a very fast (default) response
to faults to ensure that the system power supplies are
protected against catastrophic load current and shortcircuit faults. Additionally, an analog output (voltage) signal …