Maxim's MAX5042 is a two-switch, clamped, PWM converter with integrated hot-swap controller. This is a unique device that the company says simplifies the design of small, high-performance, isolated power supplies by integrating high-side and low-side power MOSFETs with a hot-swap controller. The two-switch topology lowers the voltage stress on the power MOSFETs when compared to the commonly used ground-referenced, single-switch topology. This eliminates the reset winding, which optimises the design of planar isolation transformers, says Maxim.
It operates over an input voltage range of 20 to 76 V and is suited for stepping down a 48 V bus to lower voltages in telecom, networking, and server applications. The switching frequency can be externally set to over 500 kHz. The MAX5042 implements both flyback and forward converter topologies with voltage-mode or current-mode operation.
Power supplies designed with the MAX5042 are capable of up to 50 W output power at over 90% efficiencies according to the manufacturer.
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