The Wurth Elektronik FISM power module family is an unregulated, functional isolated, fully integrated DC/DC converter. The module integrates the switching power stage, control circuitry, transformer and input/output capacitors. The module requires no external components for operation thus reducing design effort and complexity to a minimum. The FISM ensures fast time to market and low development costs. The 1779405x11 series of the FISM family achieves typically an efficiency of 83% up to 88%. The series is available in a SIP-4 package (11.60 x 7.55 x 10.16mm).

1.5kV DC functional isolation for 60s
Continuous short-circuit protection
Current capability up to 0.4A
Nominal input voltage rails: 5V / 12V / 24V
Output voltage: 5V unregulated
No minimum load required
Continuous output power: 2W
Integrated CIN, COUT and transformer
Output voltage accuracy: Typ. +5% / -2.5%
Operating switching frequency: 600kHz