AN2708 datasheet(36/42 Pages) STMICROELECTRONICS

Part #	AN2708

Description	2X36 W digital dimmable ballast with L6574 and ST7FDALI

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

36 / 42 page

DALI master AC-DC adapter

AN2708

36/42

5.3

Adapter performances

Several tests have been performed on the board to evaluate the converter behavior in terms

of efficiency, stability, safe operating area of the devices, line & load regulation and EMI

performances.

5.3.1

Steady state tests

These tests have been performed at the input voltage of 110 Vac and 230 Vac at full and

minimum load condition.

As shown by the waveforms the power supply operates in discontinuous current mode.

Figure 27.

VIPer12A-E steady state behavior at

full load at 110 Vac - 60 Hz

Figure 28.

VIPer12A-E steady state behavior at

full load at 230 Vac - 50 Hz

CH1 (blue): drain voltage

CH4 (purple): drain current

CH1 (blue): drain voltage

CH4 (purple): drain current

Figure 29.

VIPer12A-E steady state behavior at

minimum load at 110 Vac - 60 Hz

Figure 30.

VIPer12A-E steady state behavior at

minimum load at 230 Vac - 50 Hz

CH1 (blue): drain voltage

CH4 (purple): drain current

CH1 (blue): drain voltage

CH4 (purple): drain current

AN2708 Datasheet(PDF) 36 Page - STMicroelectronics