Preface
2014 Microchip Technology Inc. DS50002228A-page 7
RECOMMENDED READING
This user's guide describes how to use the MCP19035 600 kHz High-Voltage
Synchronous Buck Controller Reference Design. Other useful documents are listed
below. The following Microchip documents are available and recommended as
supplemental reference resources.
MCP19035 Data Sheet – “High-Speed Synchronous Buck Controller
(DS22326)
AN1452 – “Using the MCP19035 Synchronous Buck Converter Design Tool
(DS01452)
MCP19035 Excel-based Design Analyzer
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Technical support is available through the web site at:
http://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (July 2014)
Initial Release of this Document.
MCP19035 600 kHz HIGH-VOLTAGE
SYNCHRONOUS BUCK CONTROLLER
REFERENCE DESIGN USERS GUIDE
DS50002228A-page 8 2014 Microchip Technology Inc.
Chapter 1. Product Overview
1.1 INTRODUCTION
This chapter provides an overview of the MCP19035 600 kHz High-Voltage
Synchronous Buck Controller Reference Design and covers the following topics:
MCP19035 Short Overview
What Is the MCP19035 600 kHz High-Voltage Synchronous Buck Controller
Reference Design?
What the MCP19035 600 kHz High-Voltage Synchronous Buck Controller
Reference Design Kit Contains
1.2 MCP19035 SHORT OVERVIEW
The MCP19035 is a highly-featured, highly-integrated, synchronous buck controller in
a space-saving 10-pin DFN 3x3 package that operates from input voltage sources up
to 30V. Integrated features include high and low-side MOSFET drivers, fixed-frequency
voltage mode control, internal oscillator and reference voltage generator, overcurrent
protection circuit for both sides, Power Good circuit and overtemperature protection.
A minimal number of external components are necessary to develop a complete,
high-performance Synchronous Buck Converter power supply.
The MCP19035 Synchronous Buck Controller is intended to be used for applications
requiring medium to high-output currents (up to 20A) and input voltages up to 30V.
Typical applications includes:
Medium currents Point-of-Load converters
FPGA/DSP power supplies
USB power ports
Digital Set-Top boxes
Industrial 24V rail converters
High-power LED drivers
The internal linear voltage regulator (LDO) allows low current loads (i.e., PIC
®
microcontrollers) to be powered directly from the controller without any additional
components.
Product Overview
2014 Microchip Technology Inc. DS50002228A-page 9
FIGURE 1-1: MCP19035 – Typical Application.
1.3 WHAT IS THE MCP19035 600 kHz HIGH-VOLTAGE SYNCHRONOUS BUCK
CONTROLLER REFERENCE DESIGN?
The MCP19035 600 kHz Synchronous Buck Converter Controller is a compact, highly
efficient, step-down voltage converter that will convert the input voltage rail (typically
24V) to 5V regulated output voltage. The maximum output current for this step-down
converter is 5A. The board demonstrates the capabilities of the MCP19035 600 kHz
Synchronous Buck Converter Controller in a typical high-voltage input step-down appli-
cation. Test points for various signals are provided for measuring different parameters
of the converter. The reference design can be modified to support output voltages from
3.3V to 5V by changing a single resistor.
1.4 WHAT THE MCP19035 600 kHz HIGH-VOLTAGE SYNCHRONOUS BUCK
CONTROLLER REFERENCE DESIGN KIT CONTAINS
The MCP19035 600 kHz High-Voltage Synchronous Buck Controller Reference Design
kit includes:
MCP19035 600 kHz High-Voltage Synchronous Buck Controller Reference
Design (ARD00514)
Important Information Sheet
C
IN
C
OUT
L
Q
1
Q
2
MCP19035
HDRV
LDRV
PHASE
BOOT
+VCC
C
BOOT
C
VCC
+V
OUT
SHDN
V
IN
PWRGD
COMP
FB
R
1
R
3
C
1
R
2
C
3
R
4
C
2
+V
IN
ON
OFF

ARD00514

Mfr. #:
Manufacturer:
Microchip Technology
Description:
Power Management IC Development Tools Buck Conv Eval Brd MCP19035 High Volt
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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