External Circuit Design

AN2317 - Application

10/27

The secondary current sensing circuit can be connected to the mains as shown in

Figure 4:

1.

The hot line voltage wire must be connected to pin N of the module.

Normally, this wire is also connected to the hot line current wire. However, during

production or to verify phases, this wire may be connected to some other line voltage

source.

2.

The neutral line voltage wire must be connected to pin F of the module.

This wire is also connected to the neutral line current wire, which passes by the

module.

3.

The hot line current wire must be connected to the Shunt pole which is close to pin N of

the module.

4.

The hot load current wire must be connected to the Shunt pole which is close to the

edge of the module.

Figure 4.

Shunt Module-to-Power Line Connections

AI12299

Hot Load

Neutral

Hot Line

P1

W6

Comp side

Shunt

*

FN

W5

LED

NLC

TPR

DIR