AN2934

Experimental results

Doc ID 15394 Rev 1

17/27

As shown in the above tables for the double and single outputs, line and load regulation are

excellent. The shield helps to protect the device from EMI, as shown in Figure 15, but at the

expense of efficiency due to the extra wattage in the transformer’s energy dissipated as a

result of the coupling between the primary and the shield at high lines.

5.2

Transformers

Figure 9.

Transformer specifications

Line regulation

0.00%

0.08%

+/-% load/cross regulation

0.12%

1.47%

Ripple in mV pp at 115

25

Input at no load at 115 Vac in mW

86

Short-circuit

Ok

1.

VIPer17HN unit #1 with single primary, no shield CSM16VT-081.

Table 10.

Vin

A at 12 V

12 Vout

W in

I in

Efficiency

Vdd

Figure 7.

Transformers for dual output

Figure 8.

Transformers for single output

AM03424v1

082

070

AM03425v1

AM03426v1