The PT4801 ExcaliburTM module is an isolated triple-output DC/DC converter that provides +15V, +3.3V, and +1.5V power supply voltages from a standard (-48V) telecom central office (CO) supply. A typical application is a chip-set for an 8 or 16-channel ADSL/DSL line card, or other mixed signal circuitry. The output voltage combination provides power for a processor core, digital logic, and analog support circuitry. The Vo2 and Vo3 outputs are also designed to meet the power-up/ down sequencing requirements of popular DSP ICs.