Vacuum cleaner requirements

AN2777

10/13

Doc ID 14748 Rev 1

Figure 10.

Turn-off constraint (2000 W - 230 V motor)

setting than the maximum speed. Table 1 gives some measurements performed on the

same 2000 W, 230 V motor. It shows that even if the load rms current increases when the

speed, with a 7.3 A/ms rate. Such a rate is less than half the level that the T1235H can

withstand at a 150 °C junction temperature (16 A/ms).

Figure 11.

Turn-on delay definition

Table 1.

Measurements with 2000 W, 230 V motor

6

5

0.75

46.7

10

7.3

5.9

4.5

dI/dt

OFF

V

T

I

T

1

2

dI/dt

OFF

V

T

I

T

1

2

V

T

V

L

I

T

t

ON

V

T

V

L

I

T

t

ON