IC manufacturers Microchip

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Microchip MCP166X | Demoboard AN2085

High Output Voltage Boost Converter Family

Overview

TopologyFlyback Converter
Input voltage3.3-4.2 V
Output 112 V
IC revisionA

Description

This document aims to assist engineers in designing different power applications and to provide an insight on how a simple, Non-Synchronous Boost Converter can be used to develop solutions for non-typical requirements.The following paragraphs will provide examples of converter applications that fulfill a wide variety of the industry requirements.The solutions provided by Microchip Technology Inc. highlight the use of the MCP1661/3 boost (step-up) regulators, which provide the necessary flexibility required in dealing with the increasing range of the technological field demands.The MCP1661/3 devices are compact, highly efficient, fixed-frequency, Non-Synchronous Step-up DC-DC Converters, which integrate a 36V switch. These products provide space efficient, high-voltage step-up, easy-to-use power supply solutions. The MCP1661/3 devices were developed for applications that are powered by two-cell or three-cell alkaline, Ni-Cd, Ni-MH batteries, or Li-Ion or Li-Polymer batteries.

Features

  • Wide Output Voltage Range: Up to 32V
  • Typical Input Peak Current Limit:
  • 1.3A (MCP1661)
  • 1.8A (MCP1663)
  • Input Voltage Range: 2.4V-5.5V
  • Undervoltage Lockout (UVLO):
  • UVLO @ VIN Rising: 2.3V, typical
  • UVLO @ VIN Falling: 1.85V, typical
  • Pulse-Width Modulator (PWM) Operation with Skip Mode: 500 kHz
  • Output Overvoltage Protection (OVP) for MCP1661/3 in the event of:
  • Feedback pin shorted to GND
  • Disconnected feedback divider
  • Internal Compensation
  • Peak Current Mode Control
  • Available Packages (pin to pin compatible):5-Lead SOT-23 and 2x3 mm, 8-Lead TDFN

Products

Order Code Data­sheet Simu­lation Downloads Product seriesVINVOut1
(V)
IOut1
(A)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
SizeIC Reference Samples
750311691SPEC
7 files WE-FB Flyback Transformer suitable for LT3573/ LT3574/ LT3575/ LT3748 8 - 15 V (DC) 150 0.001 60 1:5 0.25 1 1500 EP5 LT3748
Order Code Data­sheet Simu­lation
750311691SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesVINVOut1
(V)
IOut1
(A)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
SizeIC Reference Samples