lnk603 Power Integrations, Inc., lnk603 Datasheet - Page 13

• Manufacturer Part Number: lnk603
• Description: Energy-efficient, Accurate Cv/cc Switcher For Adapters And Chargers
• Manufacturer: Power Integrations, Inc.

Figure 19. Test Set-up for Feedback Pin Measurements.
Figure 20. Test Set-up for Leakage and Breakdown Tests.
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1) Raise V
2) Raise V
3) Reduce V
4) Apply 1.5 V at V
BP
IN
until cycle skipping occurs at V
IN
voltage from 0 V to 6.2 V, down to 4.5 V, up to 6.2 V
5 μF
until cycle skipping stops at V
V
IN
IN
and measure t
+
To measure BV
1) Close S1, open S2
2) Power-up V
3) Open S1, close S2
4) Measure I/V characteristics of Drain pin using the curve tracer
50 kΩ
16 V
V
+
6.2 V
IN
+
10 kΩ
FB
4 kΩ
delay from start of cycle falling edge to the next falling edge
IN
10 μF
DSS
source (16 V)
, I
OUT
DSS1
OUT
LinkSwitch-II
to measure V
, and I
to measure V
FB
BP
D
1 μF
DSS2
S
S
S
S
follow these steps:
S1
FBth
FBth-
. Cable drop compensaion factor is υ
.1 μF
S2
LinkSwitch-II
BP
FB
D
Tracer
Curve
500 Ω
PI-4961-022708
S
S
S
S
V
OUT
+
LNK603-606/613-616
2 V
FB
= V
FBth
/ V
FBth-
PI-4962-040308
Rev. C 06/08
13