Power supply systems rely on switch-mode power conversion for high-efficiency operation. A typical SMPS system may convert ac-dc (rectification), dc-dc or dc-ac (inversion). These systems are widely used in high voltage/high power industrial applications such as telecom systems, servers, and base-station equipment. Silicon Labs Si84xx digital isolators, Si823x ISOdrivers and Si851x/2x current sensor ICs have patented isolation and high voltage technology that has enabled the development of a portfolio of highly integrated silicon-based power solutions.
Isolated dc-dc SMPS Reference Design from Silicon Labs and National Semiconductor
Featuring Silicon Labs’
SI8420 ISOpro™ digital isolator and National Semiconductor’s
LM5035C pulse-width modulation (PWM) controller the isolated dc-dc converter evaluation board provides power converter designers with a highly efficient 100 W reference design in a quarter-brick form factor. The evaluation board reduces the time required for product characterization and design adaptation to the customer’s specific requirements.The reference design demonstrates a viable 36 V to 75 V input half-bridge converter for power module or embedded power applications. The design survives input transients up to 100 V as commonly required in communications equipment and protects the power distribution system with hiccup-mode fault protection.