Maxim-integrated 78M6610+PSU Hardware Design Guidelines Manual do Utilizador descarregar pdf (Página 3)

AN_6610_107 78M6610+PSU Hardware Design Guidelines

Rev. 0 3

2.1 Sensor Connections

The basic connections for a shunt-based system are represented below.

Shunt

NEUTRAL

LINE

750

AVN

INPUT

750

AVP

NTC

ATEMP

100nF

1000pF

100nF

750

1000pF

100nF

AIP

AIN

100nF

LOAD

78M6610+PSU

3P3

Figure 2: Basic Connection Diagram on Shunt-Based Systems

The 78M6610+PSU makes use of a single 3.3 VDC supply (V

3P3

) that also represents the reference

potential for the following analog inputs:

• AVP/AVN used to measure the line voltage.

• AIP/AIN used to measure the current.

• ATEMP1 and ATEMP2 used to measure external temperature.

Do not tie the ground of the 78M6610+PSU directly to earth ground when using shunts. See

the Safety Precautions section.

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Maxim-integrated 78M6610+PSU Hardware Design Guidelines Manual do Utilizador Página 3