ML4821IS MICRO-LINEAR [Micro Linear Corporation], ML4821IS Datasheet - Page 9
![no-image](/images/no-image-200.jpg)
ML4821IS
Manufacturer Part Number
ML4821IS
Description
Power Factor Controller
Manufacturer
MICRO-LINEAR [Micro Linear Corporation]
Datasheet
1.ML4821IS.pdf
(12 pages)
- Current page: 9 of 12
- Download datasheet (181Kb)
OFF-LINE START-UP AND BIAS SUPPLY GENERATION
The circuit in Figure 11 supplies V
ML4821. Start-up current is delivered via R10. The IC
starts when V
power is delivered through the tap on L1. The
configuration shown delivers a voltage proportional to the
PFC output bus voltage.
L1
N
P
N
N
S
P
N
S
Figure 11. Bias and Start-up Circuit.
V
14V
CC
OUT
reaches 15.5V. After that time running
39k
R10
2W
1 F
1 F
CC
power to the
1000 F
TO B+
Micro Linear
TO IC
PIN 15
ML4821
9
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