ARD00386 Microchip Technology, ARD00386 Datasheet - Page 11

• 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

1.3
1.4
© 2011 Microchip Technology Inc.
WHAT IS THE MCP1640 12V/50 mA TWO CELLS INPUT BOOST
CONVERTER REFERENCE DESIGN?
WHAT DOES THE MCP1640 12V/50 mA TWO CELLS INPUT BOOST
CONVERTER REFERENCE DESIGN KIT INCLUDE?
The MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design is
designed to demonstrate the MCP1640 device’s high-voltage boost capability above its
typical output range of 5.5V. This board boosts the low-voltage input to 12V and up to
70 mA load. By changing the sense resistors (R
output than 12V will be obtained. The MCP1640 Input Boost Converter was developed
to help engineers reduce product design cycle time.
At 2.0V input and 12V output, the board is capable of a maximum of 50 mA load current.
The N-MOS switch is connected between the inductor and the main switch, allowing
the application to output higher voltage (see
The converter is configured as nonsynchronous; a Schottky diode is connected
between the inductor and the High-Voltage Output (V
starts as the current generator for the Output Capacitor (C
the internal N-MOS switch is OFF, a Start-up Resistor (R
the N-MOS switch, should be used.
FIGURE 1-2:
Reference Design Block Diagram.
The MCP1640 Input Boost Converter kit includes:
• MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design, 102-00386
• Important Information Sheet
Two Cells Input
MCP1640 12V/50 mA Two Cells Input Boost Converter
C
IN
N-MOS
Switch
L
Boost
V
IN
EN
SW
Figure
V
GND
T
OUT
and R
FB
Product Overview
R
1-2).
OUT
Start
B
Start
on
High). At start-up, MCP1640
OUT
), connected in parallel with
Figure
R
R
). Because at this time,
B
T
C
1-2), a lower/higher
OUT
V
OUT
DS51999A-page 11
High > 6V
Load