ARD00386 Microchip Technology, ARD00386 Datasheet - Page 15

• Manufacturer Part Number: ARD00386
• Description: Power Management Modules MCP1640 12V 50mA Boost Converter
• Manufacturer: Microchip Technology

Specifications of ARD00386

• Product: DC-DC Converters / Regulators
• Input Voltage Max: 5 V
• Switching Frequency: 500 kHz
• Output Voltage: 12 V
• Output Current: 50 mA
• Input Voltage Min: 2 V

2.2
FIGURE 2-3:
Setup Circuit.
© 2011 Microchip Technology Inc.
PWR Supply
Set 3.0V
GETTING STARTED
The MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design is fully
assembled and tested to evaluate and demonstrate the MCP1640 family of products.
2.2.1
The extended input range of the MCP1640 Input Boost Converter is 2.0 to 5.0V input.
Good efficiency is obtained by supplying from two cells (primary and secondary batter-
ies).
Input power connectors are placed on the left side of the board:
• V
• GND for negative power
The maximum input voltage should not exceed 5.0V. The output voltage will be out of
regulation for input voltages lower than 2.0V.
The output connector is called V
current is 50 mA when the board is powered by two alkaline batteries that are close to
the end of their run time, at approximately 1V each.
2.2.2
Because this board is boosting the input voltage, the input current is greater than the
output current. The variable power supply for testing requires output capability of at
least 1A and a voltage range of 2.0V to 5V.
To test the board, follow these steps:
1. Connect the power at V
2. Set the power supply to 3.0V.
3. Connect a voltmeter and a 240Ω/0.5W resistor between V
4. Check to be sure the voltmeter indicates 12V.
5. Set the power supply to 2.0V and verify if the output of the converter stays
MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design
IN
connectors, as shown in
regulated (V
for positive power
Powering the MCP1640 12V/50 mA Two Cells Input Boost
Converter Reference Design
Board Testing
OUT
= 12V).
IN
Figure
and GND terminals of the board.
OUT
Installation and Operation
2-3.
and is referenced to GND. The minimum output
V-meter
OUT
and GND
DS51999A-page 15
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