MCP1663 datasheet(18/32 Pages) MICROCHIP

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MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board User’s Guide

DS50002364A-page 18

 2015 Microchip Technology Inc.

FIGURE 2-2:

MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board Setup.

2.2.1.3

ADJUSTABLE VOUT SETTING

The top circuit comes with the output value set to 9V and 12V (VOUT selective using a

switch). If a different output is desired, set the switch in the OFF state (button down)

and recalculate the resistor divider (RT1 and RB1) using Equation 2-1.

The Bottom circuit comes with VOUT set to 24V. As in the previous case, the same

equation can be used to calculate RT and RB and set another output voltage. Note that

VIN must be lower than VOUT.

EQUATION 2-1:

POWER +

SUPPLY -

POWER +

SUPPLY

V-meter

Electronic

Load/

Resistive

Load

Electronic

Load/

Resistive

Load

V-meter

Electronic

Load/

Resistive

Load

BIAS Supply Option Select

VOUT Select Switch

OUT

-------------





–



Where

: VFB = 1.227V

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