AN8031 データシートの表示（PDF） - Panasonic Corporation

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AN8031

Active filter control IC

Panasonic Corporation 

Voltage Regulators

AN8031

Active filter control IC

s Overview

In supplying electric power from commercial power

2.4±0.25

6.0±0.3

3.3±0.25

Unit: mm

supply to various electrical equipment, there is a possi-

bility that the harmonic distortion generated in the power

9

line may give obstruction to the power facilities or other

8

electrical equipment. The use of active filter is one of the

7

methods to solve the harmonic distortion problems.

6

The AN8031 is a monolithic IC which incorporates

5

the control and protection functions into one package so

4

that the active filter can be constructed easily. It is most

3

suitable for the measures against the harmonic distortion

2

1

problems such as lighting equipment.

0.3

+0.1

–0.05

s Features

• Self-excited peak current mode is adapted.

3.0±0.3

• Built-in protection circuit for preventing the overvolt-

SIP009-P-0000C

age generated under a small load

• Easy constant setting with enlarged dynamic range of multiplier and error amplifier.

• Using totem pole output circuit which allows the power MOSFET to be directly driven.

• Built-in low voltage protection circuit which ensures the on-resistance during the power MOSFET operation.

• Timer circuit is built in for realizing automatic start.

s Applications

• Lighting equipment and switching power supply equipment

s Block Diagram

Under voltage Over voltage

clamper

clamper

1 SVCC

One

shot

U.V.L.O. comp.

6 VB

2.5 V

VREF

10 V/8 V

Timer

Drive

9 PVCC

8 VOUT

Current

comp.

MPI 3

Multiplier

2.5 V

OVP comp.

2.6 V

2 CS

Error amp.

5 EI

2.5 V

1

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