Transformer specification

AN1736

14/20

10

Transformer specification

Figure 15.

Mechanical drawings of the transformer

When the VIPer22A (U1) is on, energy is stored in the primary winding of transformer (1-2),

TX1. This energy is transferred to the auxiliary winding (3-4), and to the output (5-6) when

the VIPer22A is off. The auxiliary winding provides the bias voltage for the VIPer22A at pin 4

(Vdd).

●

Primary Inductance 2.25mH±15%

●

Primary Leakage Inductance 22

µH typical

●

Turns Ratio (N1/N5:N2) 1:0.053

●

Turns Ratio (N1/N5:N3) 1:0.127

●

Turns Ratio (N1/N5:N4) 1:0.167

The transformer is designed and manufactured by Cramer Coil and Transformer.

Meets Construction

for:

UL 1310, 1950,1411,

IEC 61558-1,2-17,

EN60950

www.cramercoil.com