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Diodes AP72200 high efficiency synchronous DC-DC voltage converter solution

Published time : 2019-05-05 Diodes,
The AP72200 is a high-current synchronous buck-boost converter providing high efficiency, excellent transient response, and high DC output accuracy.

Solution Introduction

The AP72200 is a high-current synchronous buck-boost converter providing high efficiency, excellent transient response, and high DC output accuracy. The targeted applications are surveys,Tablet, and other handheld devices. The AP72200 utilizes a four-switch h-bridge configuration to support buck and boost operation. The buck-boost provides at least 2A output current.

The current control scheme handles wide input/output voltage ratios and provides low external component count with outstanding performance in line/load transient response and seamless transitionBetween buck and boost modes.

The AP72200 features I2C compatible, two-wire serial interface personally responded to a bidirectional serial data line, SDA, and a serial clock line, SCL. It supports SCL clock rates up to 3.4MHz.

The AP72200 also features UVLO, OTP, and OCP to protect The circuit.

This IC is available in a small 2.125mm 1.750mm, 20 balls WLCSP package.

Main features of AP72200:

• VIN 2.3V to 5.5V

• Output Voltage Range: 2.6v to 5.14v

• 2A Continuous Output Current for VOUT= 3.4v and VIN> 2.9v Efficiency Up to 97%

• 2.5 MHz Switching Frequency

• the I2C Interface

• Selectable MODE PFM/PWM

• Ultrasonic Operation Programmable through I2C

• Power Good Indicator with 5 m Ω Internal Pull - Up

• Adjustable Overcurrent Limit

• Fully Protected for Overcurrent, Short Circuit, Reverse Current Protection, Overtemperature, and UVLO

• Totally lead-free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. "Green" Device (Note 3)

AP72200 application:

Smartphones,

• Tablets

• Portable Consumer Devices

AP72200 diagram

Typical application of AP72200

Evaluation board AP72200 - EVM entry

The AP72200 is a high current synchronous buck-boost converter providing high efficiency, excellent transient response and high DC output accuracy.Handheld devices and other handheld devices. The AP72200 utilizes a four switches h-bridge configuration to support buck and boost operation. The buck-boost provides at least 2A output current.

The current control scheme handles wide input/output voltage ratios and provides low external component count with outstanding performance in line/load transient response and seamless transitionBetween buck and boost modes.

The AP72200 features I2C compatible, 2-wire serial interface responded to a bidirectional serial data line, SDA, and a serial clock line, SCL. It supports SCL clock rates up to 3.4MHz.

The AP72200 also features UVLO, OTP, and OCP to protect The circuit.

This IC is available in a small 2.125x1.750mm, 20 balls WLCSP package

Evaluation board ap72200-evm main features:

 V VIN V 2.3 to 5.5

 Output Voltage V range: V 2.6 to 5.14

 2 A Continuous Output Current for VOUT=3.4V and VIN > 2.9 V Efficiency Up to 97%

 2.5 MHz Switching Frequency

 I2C Interface

 Selectable MODE PFM/PWM

 Ultrasonic Operation Programmable through I2C

 Power Good Indicator with 5 M Internal Pull-up

 Adjustable Overcurrent Limit

 Full Protected for Overcurrent,Short Circuit,Reverse Current Protection, Over Temperature, and UVLO

 Totally Lead-Free & Fully RoHS Compliant

 Halogen and Antimony Free. “Green” Device

Application:

 Smartphones

 Tablets

 Portable Consumer Devices

Evaluation board AP72200-EVM outline drawing

Evaluation board AP72200-EVM outline drawing

Evaluation board AP72200-EVM material list:

Evaluation board AP72200-EVM PCB design drawing: top level

Evaluation board AP72200-EVM PCB design drawing: bottom layer

Key Components

No. Part Number Manufacturer