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MCP1663 9V/12V/24V OUTPUT

BOOST REGULATOR EVALUATION

BOARD USER’S GUIDE

 2015 Microchip Technology Inc.

DS50002364A-page 15

Chapter 2. Installation and Operation

2.1

INTRODUCTION

MCP1663 is a non-synchronous, fixed-frequency step-up DC/DC converter which has

been developed for applications that require higher output voltage capabilities.

MCP1663 can regulate the output voltage up to 32V and can deliver up to 250 mA load

at 3.3V input and 12V output (see Figure 2-3). At light loads, MCP1663 skips pulses to

keep the output ripple low. The regulated output voltage (VOUT) should be greater than

the input voltage (VIN).

Another important feature is that the device integrates the compensation and protection

circuitry, such that the final solution lowers total system cost, eases implementation and

requires a minimum number of additional components and board area.

2.1.1

MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board

Features

The MCP1663 9V/12V/24V Output Boost Regulator Evaluation Board has the

following features:

• MCP1663 device can be evaluated in two separate applications:

Typical 9V/12V Output supplied from low-input voltage source

- Input Voltage range (VIN): 2.4V to 5.5V, with VIN  VOUT

- Output Current: typical 250 mA @ 12V Output, 3.3V Input

- Enable state selectable using EN switch

24V Output supplied from high input voltage source

- Input Voltage range (VIN): 9V to 16V

• Undervoltage Lockout (UVLO)

- UVLO Start: 2.3V

- UVLO Stop: 1.85V

• PWM Operation

• PWM Switching Frequency: 500 kHz

• Peak Input Current Limit of 1.8A (typical)

• Internal Compensation

•Soft Start

• Protection in case of feedback pin shorted to GND

• Overtemperature Protection (if the die temperature exceeds +150°C, with 15°C

hysteresis)

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