MCP1663 datasheet(17/32 Pages) MICROCHIP

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Installation and Operation

 2015 Microchip Technology Inc.

DS50002364A-page 17

2.2

GETTING STARTED

The MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board is fully

assembled and tested to evaluate and demonstrate the MCP1663 product. This board

requires the use of external laboratory supplies and load.

2.2.1

Power Input and Output Connection

2.2.1.1

POWERING THE MCP1663 9V/12V/24V OUTPUT BOOST REGULATOR

EVALUATION BOARD

The MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board was designed

to be used to evaluate the MCP1663 device. The package selected is SOT-23.

Soldered test points are available for input voltage connections.

Soldered test points are available to connect a load. The switch peak current limit will

provide a safe maximum current value. The maximum output current for the converter

will vary with input and output voltages; refer to Figure 2-3 or the MCP1663 data sheet

for more information on the maximum output current.

2.2.1.2

BOARD POWER-UP PROCEDURE

TOP CIRCUIT

1. Connect the input supply as shown in Figure 2-2. The input voltage should not

be higher than 5.5V.

2. Connect system load to VOUT and GND terminals; maximum load varies with

input and output voltage. Connect the (+) side of the load to VOUT and the

negative (-) load to ground (GND).

3. The “VOUT SELECT” switch can be used to modify the output voltage between

two values:

- 9V, when the switch is in OFF position

- 12V, when the switch is in ON position

BOTTOM CIRCUIT

1. Connect the input supply as shown in Figure 2-2.

2. The MCP1663 can be used in the extended input voltage range 9V - 16V.

3. Connect system load to VOUT and GND terminals; maximum load varies with

input and output voltage. Typically, the MCP1663 can supply a 24V output with

500 mA from a 12V input source at room temperature. Connect the (+) side of

the load to VOUT and the negative (-) load to ground (GND).

4. There are two distinct methods that can be used to extend the input voltage

range:

- Using an LDO to provide the necessary low voltage (VDD) bias (jumper on J1

in “LDO” position)

- Using a Zener diode (jumper on J1 in “Zener” position)

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