page

date

DESCRIPTION: half-brick dc-dc converter

9 of 9

08/2009

20050

phone

phone 503.612.2300 fax

www.v-infinity.com

fax 503.612.2383

PART NUMBER: VHB150W

17. OUTPUT FILTERING

The converter has built-in capacitors at the output to control ripple and noise. If desired, additional output capacitance can be

introduced at the input to the powered equipment. Recommended starting point: one 10μF tantalum and one 1μF ceramic capacitor in

parallel at the output.

18. OUTPUT NOISE MEASUREMENT SCHEMATIC

For proper output ripple and noise measurement, connect a 10μF tantalum and a 1μF ceramic capacitor across the output. Set the

scope bandwidth to 20MHz. Probe directly off of one of the capacitors, using a small ground clip to minimize measurement error.

Resistor

Load

To Scope

Solid Tantalum

10µF

Ceramic

1.0µF

+Vin

-Vin

-Vo

-S

Trim

+S

+

+Vo

FIGURE 10. OUTPUT NOISE MEASUREMENT CIRCUIT