VIPER22-LED-EV STMicroelectronics, VIPER22-LED-EV Datasheet - Page 10

• Manufacturer Part Number: VIPER22-LED-EV
• Description: VIPER LED POWER SUPPLY
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of VIPER22-LED-EV

• Mfg Application Notes: VIPower, AN1916 AppNote
• Current - Output / Channel: 350mA, 700mA, or 1.05A
• Outputs And Type: 1, Isolated
• Voltage - Output: 28V
• Features: Overvoltage Protection
• Voltage - Input: 90 ~ 264VAC
• Utilized Ic / Part: VIPer22A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q2105659

Operations
10/21
Figure 6.
It is then possible to build the total DC transfer function between I
Figure 6 on page 10
associated minimum turn on time. This imposes a minimum drain current under which the
device is no more able to control it in a linear way. This drain current depends on the primary
inductance value of the transformer and the input voltage. Two cases may occur, depending
on the value of this current versus the fixed 85 mA value, as described above.
I
FB
transfer function
. This figure also takes into account the internal blanking time and its
t
---------------------------------------- -
t
---------------------------------------- -
ONmin
ONmin
L
L
85mA
⋅
⋅
V
V
1
2
I
IN
IN
Doc ID 12050 Rev 2
Dpeak
0
I
Dlim
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E
I
FBsd
Part
threshold
masked
by
D
the
and I
I
I
FBsd
FB
FB
as shown on