UM0575

Operation principle

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1.3

e-STARTER operation mode

1.3.1

Schematics

Figure 5 gives the typical schematics of an "e-STARTER" for a 230 V application. The

demonstration board presented here also features some optional pads to add a snubber

(components R6 and C4) as shown in Appendix A and B. The figure also gives the names of

the main electrical parameters which will be detailed in the following sections.

The traditional PTC resistor has to be connected between the "START" and the "PTC"

solder pads (refer also to Section 3.2).

Note:

The C3 capacitor is not soldered on the breadboards. It can be added if one wants to

evaluate its impact on board immunity.

Figure 3.

PTC operation, no RUN cap.

(compressor OFF time > 10' mains:

198 V RMS)

Figure 4.

PTC operation with RUN

cap.(compressor OFF time < 1'

mains: 264 V RMS)

V PTC(100V/div)

IPTC(10A/div)

V PTC_OFF

V PTC(100V/div)

IPTC(10A/div)

VPTC(100 V/div)

IPTC(10 A/div)

VPTC_OFF

AM00899v1

AM00900v1