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DESCRIPTION

SiP11206 is a controller for the primary side of a half-bridge intermediate bus converter (IBC). It is ideally suited for isolated applications such as telecom, data communications and other products requiring an IBC architecture and conversion of standard bus voltages such as 48 V to a lower intermediate voltage, where high efficiency is required at low output voltages (24 V, 12 V, 9 V or 5 V).

FEATURES

? 36 V to 75 V input voltage range

? Withstand 100 V, 100 ms transient capability

? Integrated ± 1.6 A typical high- and low-side MOSFET drivers

? Oscillator frequency is programmable from 200 kHz to 1 MHz and can be externally synchronized

? High voltage pre-regulator operates during start-up

? Current sensing on primary low-side switch

? Hiccup mode

? System low input voltage detection

? Chip UVLO function

? Programmable soft-start function

? Over temperature protection (160 °C)

? Greater than 95 efficiency

APPLICATIONS

? Intermediate bus architectures

? Telecom and Datacom

? Routers and servers

? Storage area network

? Base station

? 1/8 and 1/4 bricks