MCP1630DM-LED2 Microchip Technology, MCP1630DM-LED2 Datasheet - Page 9

• Manufacturer Part Number: MCP1630DM-LED2
• Description: BOARD DEM MCP1630 BOOST MODE LED
• Manufacturer: Microchip Technology
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of MCP1630DM-LED2

• Current - Output / Channel: 350mA or 700mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 40V
• Features: Dimmable
• Voltage - Input: 9 ~ 16V
• Utilized Ic / Part: MCP1630
• Input Voltage: 9 V
• Product: Power Management Modules
• Supply Current: 700 mA
• Core Chip: MCP1630
• Topology: Boost
• No. Of Outputs: 1
• Output Current: 700mA
• Kit Contents: Board
• Development Tool Type: Hardware - Eval/Demo Board
• For Use With/related Products: MCP1630V, PIC12F683, MCP1702
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

1.1
1.2
© 2007 Microchip Technology Inc.
INTRODUCTION
FEATURES
The MCP1630 Boost Mode LED Driver Demo Board is a step-up, switch-mode, dc-dc
converter used for power LED applications. The demo board provides a 350 mA or
700 mA constant current source with a jumper selection. Other output currents can be
obtained with minor modifications to the board.
The MCP1630 Boost Mode LED Driver Demo Board utilizes Microchip's MCP1630V
high-speed pulse width modulator. The 8-pin MCP1630V device contains the analog
components necessary for an analog switch-mode control loop including an error
amplifier, PWM comparator, and a high current driver pin. The switching frequency and
maximum duty cycle for the MCP1630V are determined by an external clock source.
An 8-pin PIC12F683 microcontroller is used to provide a 500 kHz switching clock for
the MCP1630. In addition, the PIC12F683 firmware supervises the circuit output
voltage and can optionally dim the LEDs when a potentiometer is attached.
In this demo application, the MCP1630V device is used for Average Current mode
control using a voltage boost circuit. A ramp generator provides a reference signal to
the MCP1630V comparator. The ramp signal and error amplifier output voltage
determine the PWM duty cycle for the voltage boost circuit. The MCP1630V device is
used because its error amplifier provides a higher output voltage range than the
MCP1630 device (2.7V vs. 0.9V).
The MCP1630 Boost Mode LED Driver Demo Board has the following features:
• Compact size with high output power
• High efficiency over entire operating input voltage range
• Selectable output current: 350 mA or 700 mA
• Maximum output power: 30W
• Optional software dimming control
• Factory programmed source code provided
• Switching frequency, maximum duty cycle, and MCP1630 reference voltage can
• Additional application functions can be provided in firmware
be modified in firmware
Note:
Chapter 1. Product Overview
MCP1630 is used throughout this document for both the MCP1630 and
MCP1630V devices.
MCP1630 BOOST MODE LED DRIVER
DEMO BOARD USER’S GUIDE
DS51665B-page 5