Edited by PETech Staff

DC-DC Controller

When combined with Linear Technology's primary side dc-dc regulators, the LT3804 offers a complete isolated dual output power supply priced up to 40% below comparable dc-dc modules. Applications include 48V distributed power, datacom/telecom, DSL/cable modems, servers and RAID systems, as well as industrial and automotive instruments.

The LT3804 contains an error amplifier and an optocoupler driver to regulate the main output. For the second output regulation, the IC contains a complete PWM controller to drive dual synchronous N-channel MOSFETs. With leading edge modulation, it operates with either current or voltage mode control of the primary side. The device is synchronized to the falling edge of the transformer secondary winding and can be used in single ended or double-ended isolated power converter topologies. The LT3804 operates with switching frequencies ranging from 200 kHz to 800 kHz.

For more information, visit www.linear.com.

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