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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1632 Datasheet

Low-Side PWM Controller

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MCP1632 pdf
MCP1632
High-Speed, Low-Side PWM Controller
Features:
• High-Speed PWM Controller with Integrated
Low-Side MOSFET Driver
• Multiple Switching Frequency Options (fSW):
- 300 kHz
- 600 kHz
• Adjustable Reference Voltage Generator
• Adjustable Soft Start
• Internal Slope Compensation
• Shutdown Input Pin (EN)
• Low Operating Current: < 5 mA (typical)
• Undervoltage Lockout (UVLO) Protection
• Output Short Circuit Protection
• Overtemperature Protection
• Operating Temperature Range:
- -40°C to +125°C
Applications:
• Switch Mode Power Supplies
• Brick DC-DC Converters
• Battery Charger Applications
• LED Drivers
Related Literature:
• “MCP1632 300 kHz Boost Converter Demo Board
User’s Guide”, Microchip Technology Inc.,
DS20005252A, 2013
Description:
The MCP1632 high-speed PWM controller is a
pulse-width modulator developed for stand-alone power
supply applications. The MCP1632 includes a
high-speed analog control loop, a logic-level MOSFET
driver, an internal oscillator, a reference voltage
generator, and internal slope compensation. This high
level of integration makes it an ideal solution for
standalone SMPS applications. MCP1632 is suitable for
use in topologies requiring a low-side MOSFET control,
such as Boost, Flyback, SEPIC, Ćuk, etc. Typical
applications include battery chargers, intelligent power
systems, brick DC-DC converters, LED drivers. Due to
its low power consumption, the MCP1632 PWM
controller is recommended for battery-operated
applications.
The MCP1632 offers a Peak Current mode control in
order to achieve consistent performance regardless of
the topology of the power train or the operating
conditions. In addition, the MCP1632 can implement
the Voltage Mode Control for cost-sensitive solutions.
The MCP1632 PWM controller can be easily interfaced
with PIC microcontrollers in order to develop an
intelligent power solution.
Additional features include: UVLO, overtemperature
and overcurrent protection, shutdown capability (EN
pin) and an adjustable soft start option.
Package Type
8-Lead DFN
(2 mm x 3 mm)
8-Lead MSOP
COMP 1
8 VREF COMP 1
FB 2 EP 7 Vin
CS 3 9 6 VEXT
FB 2
CS 3
EN 4
5 GND
EN 4
8 VREF
7 VIN
6 VEXT
5 GND
2013 Microchip Technology Inc.
DS20005254A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1632 Datasheet

Low-Side PWM Controller

No Preview Available !

MCP1632 pdf
MCP1632
Functional Block Diagram
EN
Shutdown
Circuit
SS Reset UVLO
Overtemperature
Oscillator
300/600 kHz
CLK
VIN
CS
COMP
FB
6 k:
+1
RAMP
CS
Blanking
100 ns
VIN
+
PWM
- Comp
VIN
-
EA
+
2R
2.7V R
VIN
50 μA
VREF
Reference
Voltage
SS Reset
SQ
RQ
VDRIVE
Latch Truth Table
SRQ
0 0 Qn
011
100
111
VIN
VEXT
10 k:
GND
DS20005254A-page 2
2013 Microchip Technology Inc.


Part Number MCP1632
Description Low-Side PWM Controller
Maker Microchip
Total Page 30 Pages
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