AN4345 datasheet(3/28 Pages) STMICROELECTRONICS

3 / 28 page

DocID025078 Rev 1

3/28

AN4345

List of figures

Figure 1.

Product evaluation board picture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2.

Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3.

Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4.

Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5.

VDD waveform, self-biasing (J1 not selected) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6.

VDD waveform, external biasing (J1 selected) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 7.

Source current and voltage at max. load 115 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 8.

Source current and voltage at max. load 230 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 9.

Source current and voltage at max. load 90 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 10.

Source current and voltage at max. load 265 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 11.

Line regulation (external biasing, Iout2 = 0 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 12.

Line regulation (external biasing, Iout2 = 50 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 13.

Load regulation (external biasing, Iout2 = 0 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 14.

Load regulation (external biasing, Iout2 = 50 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 15.

Output voltage ripple at max. load 90 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 16.

Output voltage ripple at max. load 265 VAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 17.

No load consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 18.

Active mode efficiency and comparison with CoC5 and DOE standards . . . . . . . . . . . . . . 14

Figure 19.

Startup at VIN = 115 VAC full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 20.

Startup at VIN = 115 VAC full load (zoom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 21.

Startup at VIN = 230 VAC full load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 22.

Startup at VIN = 230 VAC full load (zoom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 23.

Output short-circuit applied: OLP tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 24.

Output short-circuit maintained: OLP steady-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 25.

Output short-circuit maintained: OLP steady-state (zoom) . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 26.

Output short-circuit removal and converter restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 27.

Feedback loop failure protection: tripping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 28.

Feedback loop failure protection: steady-state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 29.

Feedback loop failure protection: steady-state (zoom) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 30.

Feedback loop failure protection: converter restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 31.

Thermal measurement at VIN = 90 VAC, full load (IOUT1 =100 mA,IOUT2 = 50 mA) . . . . . 20

Figure 32.

Thermal measurement at VIN = 115 VAC, full load (IOUT1 = 100 mA, IOUT2 = 50 mA) . . . . 20

Figure 33.

Thermal measurement at VIN = 230 VAC, full load (IOUT1 = 100 mA, IOUT2 = 50 mA) . . . . 21

Figure 34.

Thermal measurement at VIN = 265 VAC, full load (IOUT1 = 100 mA, IOUT2 = 50 mA) . . . . 21

Figure 35.

Average measurement at VIN = 115 VAC, full load (IOUT1 =100 mA, IOUT2 = 50 mA) . . . . 22

Figure 36.

Average measurement at VIN = 230 VAC, full load (IOUT1 =100 mA,IOUT2 = 50 mA) . . . . 22

Figure 37.

Connections of the UUT to the wattmeter for power measurements . . . . . . . . . . . . . . . . . 23

Figure 38.

Switch in position 1-setting for standby measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 39.

Switch in position 2-setting for efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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