ADP1047 Datasheet PDF ( Pinout ) - (ADP1047 / ADP1048) Digital Power Factor Correction Controller

ADP1047 Datasheet PDF - Analog Devices

Part Number	*ADP1047*
Description	(ADP1047 / ADP1048) Digital Power Factor Correction Controller
Manufacturers	Analog Devices
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Data Sheet

Digital Power Factor Correction Controller

with Accurate AC Power Metering

ADP1047/ADP1048

FEATURES

Flexible digital power factor correction (PFC) controller

Single phase operation (ADP1047); interleaved and

bridgeless operation (ADP1048)

True rms ac power metering

Enhanced dynamic response

Optimized light load efficiency performance

Output voltage adjustment

Frequency reduction

Inrush current control

Switching frequency spread spectrum for improved EMI

External frequency synchronization

PMBus compliant

Programmable ac line fault detection and protection

Programmable output fault detection and protection

Extensive fault protection for high reliability systems

Frequency range from 30 kHz to 400 kHz

8 kB EEPROM

Programming via easy-to-use graphical user interface (GUI)

APPLICATIONS

AC/DC power supplies for applications

Computing server and storage

Network and communication infrastructure

Industrial and medical

GENERAL DESCRIPTION

The ADP1047/ADP1048 are digital power factor correction

(PFC) controllers that provide accurate input power metering

capability and inrush current control for ac/dc systems. The

ADP1047 is designed for single phase PFC applications; the

ADP1048 is designed especially for interleaved and bridgeless

PFC applications.

The digital PFC function is based on a conventional boost PFC

with multiplication of the output voltage feedback combined with

the input current and voltage to provide optimum harmonic

correction and power factor for ac/dc systems. All signals are

converted into the digital domain to provide maximum flexibility;

all key parameters can be reported and adjusted via the PMBus™

interface. The ADP1047/ADP1048 allow users to optimize system

performance, maximize efficiency across the load range, and

reduce design time to market.

The ADP1047/ADP1048 provide accurate rms measurement

of input voltage, current, and power. This information can be

reported to the microcontroller of the power supply via the

PMBus interface.

TYPICAL APPLICATIONS CIRCUIT

VREC

RELAY

VOUT

INPUT

BULK

CAPACITOR

3.3V

1 AGND

2 VAC

3 VFB

4 OVP

5 PGND

6 ILIM

7 NC

8 CS–

9 CS+

10 DGND

11 PSON

12 VCORE

VDD 24

RES 23

RTD 22

ADD 21

SDA 20

PMBus

SCL 19

SYNC 18

INRUSH 17

PGOOD 16

AC_OK 15

PWM2 14

PWM 13

ADP1047

Figure 1.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

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Data Sheet

The combination of a flexible, digitally controlled PFC engine

and accurate input power metering facilitates the adoption

of intelligent power management systems that are capable of

making decisions to improve end-user system efficiency. The

device supports additional efficiency improvements through

programmable frequency reduction at light load and the

capability to reduce the output voltage at light load.

The ADP1047/ADP1048 provide enhanced integrated features

and functions; the inrush current and soft start control functions

provide significant component count reduction with easy design

optimization.

ADP1047/ADP1048

The devices are designed for high reliability, redundant power

supply applications and have extensive and robust protection

circuitry: independent overvoltage protection (OVP) and

overcurrent protection (OCP), ground continuity monitoring,

and ac sensing. Internal overtemperature protection (OTP)

is provided whereby the external temperature can be recorded

via an external sensing device.

The internal 8 kB EEPROM stores all programmed values

and allows standalone control without a microcontroller. All

parametric reporting and adjustments can be programmed via

an easy-to-use GUI. No complex programming is required.

The ADP1047/ADP1048 operate from a single 3.3 V supply. The

devices are available in a 24-lead QSOP package that is specified

over an ambient temperature range of −40°C to +85°C.