AMS34063 查看數據表（PDF） - Advanced Monolithic Systems Inc

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AMS34063

DC-TO-DC CONVERTER CONTROL CIRCUIT

Advanced Monolithic Systems Inc 

Application Information

Design Formula Table

AMS34063

VSAT = Saturation voltage of the output

switch.

VF

= voltage drop of the ringback rectifier

The following power supply characteristics must

be chosen:

VIN -Nominal input voltage.

VOUT -Desired output voltage,

|VOUT| =1.25 (1 + RB/RA)

lOUT - Desired output current.

FMIN - Minimum desired output switching

frequency at the selected values for VIN

and lOUT

VRIPPLE (P-P) - Desired peak-to-peak output

ripple voltage.In practice, the calculated

value will need to be increased due to the

capacitor equivalent series resistance

and board layout. The ripple voltage

should be kept to a low value since it will

directly effect the line and load regulation.

5

Advanced Monolithic Systems http://www.ams-semitech.com

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