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TC6501P0115VCT データシート(PDF) 11 Page - Microchip Technology

部品番号 TC6501P0115VCT
部品情報  Adding Intelligence to Lighting Applications
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC6501P0115VCT データシート(HTML) 11 Page - Microchip Technology

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LED Lighting Solutions Design Guide
11
LED Lighting Solutions
MCP1630 and MCP1631 High-Speed
PWM Controllers
The MCP1630 and MCP1631 offer another method that can
be used to generate high speed PWM signals for high power
LED drivers. The MCP1630 is an 8-pin device that contains
the components needed to generate an analog PWM control
loop, including an error amplifier, comparator and a high
current output pin to drive a power transistor.
The MCP1630 is designed to be used with a MCU that
provides a reference clock source. The MCU controls the
PWM frequency and maximum duty cycle. The switching
frequency can be up to 1 MHz, depending on the application
requirements. The MCU can also control the reference input
for the error amplifier when dimming or soft start functions
are required. Multiple MCP1630 devices can be attached to
a MCU to support multiple power channels.
The MCP1630 can be used to solve advanced power supply
issues. When multiple MCP1630 devices are used, phase
offsets can be applied to each clock input to reduce bus
current ripple. For applications that are sensitive to EMI,
dithering can be applied to the clock signal to reduce
radiated energy at a given frequency.
The MCP1631 is a 20-pin device which, in addition to
the MCP1630 includes an internal 5V or 3.3V regulator,
shutdown control, overvoltage protection, oscillator disable
and 1x and 10x gain amplifiers.
MCP1630 Boost Mode LED Driver
Demonstration Board (MCP1630DM-LED2)
This 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. The input operating
voltage range is 9-16 VDC and the board
can supply up to 30W to a string of power
LEDs.
MCP1631HV Digitally Controlled Programmable
Current Source Reference Design (MCP631RD-DCPC1)
This board provides a SEPIC DC-DC
converter for power LED and battery
charging applications. The input voltage
range is 3.5-16 VDC and the maximum
power output is 8.5W.
Literature on the Web
MCP1630/MCP1630V Device Data Sheet, DS21896
MCP1631 Device Data Sheet, DS22063
Current Feedback
Thermal Feedback
PIC12HV615
MCU
MCP1630
PWM
Controller
5V
5V
10 LED String
700 mA, 34V DC
User
Interface
9-13V DC
Clock
Reference
MCP9700
Temp Sensor
MCP1630 Boost Mode LED Driver


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