AN8032 데이터 시트보기 (PDF) - Panasonic Corporation

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AN8032

Active filter control IC

Panasonic Corporation 

AN8032

s Terminal Equivalent Circuits

Pin No.

Equivalent circuit

1

Approx. 7.1 V

To high-speed

converter

1

2

Approx. 7.1 V

Voltage Regulators

Description

I/O

CS:

I

The input terminal of comparator which detects

the current value flowing in power MOSFET.

The output level of multiplier and the current value

of power MOSFET input from the CS terminal are

compared. If the later becomes larger than the

former, the VOUT is set to low level and

the power MOSFET ouput is cut.

MPI:

I

The input terminal of multiplier

The voltage after a full-wave rectified AC input

voltage are monitored.

2

3

Approx. 7.1 V Approx. 7.1 V EO:

O

The output terminal of error amplifier / the input

terminal of multiplier.

Error amplifier

output

Multiplier

The error amplifier monitors the output voltage

of active filter and amplifies its error portion and

input

outputs to the multiplier. Therefore, this terminal

serves as another input terminal of the multiplier.

3

4

Approx. 7.1 V Approx. 7.1 V

EI:

I

The inverted input terminal of error amplifier

the overvoltage protection input terminal.

To the noninverted input terminal, the internal

reference voltage of IC (2.5 V typ.) is input.

4

Error amplifier

input

5

OVP:

I

Approx. 7.1 V Approx. 7.1 V

Overvoltage detection pin

It is an input terminal with over-voltage detection

function which can detect the overvoltage of the

output voltage to shut off the power MOSFET.

5

Overvoltage

protection input

4

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