UCC28610
SLUS888C–JANUARY 2009–REVISED SEPTEMBER 2009 ......................................................................................................................................... www.ti.com
TYPICAL CHARACTERISTICS
Unless otherwise stated: VDD = 12V, VGG = 12V, ZCD = 1 V, FB = 0 V, GND = 0 V, a 0.1-µF capacitor between VDD and
GND, a 0.1-µF capacitor between VGG and GND, RCL = 33.2 kΩ, RMOT = 380 kΩ, –40°C < TA < +125°C, TJ = TA
BIAS SUPPLY CURRENT
BIAS SUPPLY CURRENT
vs
vs
BIAS SUPPLY VOLTAGE DURING OPERATION
BIAS SUPPLY VOLTAGE DURING GREEN MODE
4.0
3.8
900
850
I
= 10 mA
FB
I
= 280.4 mA
FB
V
V
V
= 1V
ZCD
V
V
= OPEN
VGG
= OPEN
VGG
VDD
decreasing from 20 V
VDD
decreasing from 20 V
3.6
800
750
3.4
3.2
700
650
600
3.0
2.8
2.6
550
8
10
12
14
16
18
20
8
10
12
14
16
18
20
VDD – Bias Supply Voltage – V
VDD – Bias Supply Voltage – V
Figure 3.
Figure 4.
BIAS SUPPLY CURRENT
vs
TEMPERATURE DURING GREEN MODE
OPERATIONAL IVDD – BIAS CURRENT
vs
BIAS VOLTAGE
900
850
3.5
3.0
800
750
2.5
2.0
VDD rising
0 V to 20V
1.5
700
I
= 10 mA,
FB
VDD falling
20V to 0 V
1.0
0.5
650
600
I
= 0 mA,
FB
VDD falling
20V to 0 V
0.0
550
0
5
10
15
20
-40 -25 -10
5
20 35 50 65 80 95 110 125
VDD – Bias Voltage – V
T
– Junction Temperature – °C
J
Figure 5.
Figure 6.
8
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