LinkSwitch-4
Typical Application for LNK40x3D
Parameter
Symbol
Range or Value
Units
VAC
V
Comment
Supply Voltage
VIN
VOUT(CV)
IOUT
85 - 265
Universal mains
Output Voltage
5.0 ± 5%
Constant voltage (CV) mode, at the load
Label rated output current
Output Current
2
65
A
Switching Frequency at Full Load
Cable Compensation
No-load Power
fMAX
kHz
%
GCAB
PNL
6
Determined by the chosen variant
Energy Star test method
<30
>75
<1
>4
mW
%
η
Average Efficiency
Turn-on Delay
Energy Star test method
TON
s
Undershoot Voltage
VUNDERSHT
V
Load step from 0 A to 0.5 A
Table 4. 10 W Typical Application Results for Figure 10.
ꢎꢔꢕꢋ
ꢋ1
ꢇ
Rꢔꢕꢋ
ꢒꢔꢕꢋ
ꢍFꢁꢍꢋ
ꢈ ꢉ Rꢊꢋ
ꢎꢏRꢁꢎꢐꢑ
ꢌ1
ꢇꢅ
RFꢏ1
ꢈꢅ
ꢒꢁꢗ1
ꢒꢁꢗꢈ
ꢊꢉꢉ
ꢆ
Lꢀꢁ4ꢂꢃꢄꢅ
Rꢁꢗ
Rꢓꢏꢎ
Sꢇꢅ
ꢋꢇ
ꢉS
ꢒꢖꢒꢒ
Rꢒꢓꢈ
ꢆꢀꢅ
RFꢏꢈ
Rꢒꢓ
ꢀꢁꢂꢃꢄꢃꢅꢂ0ꢃ1515
Figure 10. Typical Universal Input, 10 W Charger.
By sensing the primary-side waveforms of transformer voltage and
primary current, the LinkSwitch-4 achieves constant voltage and
constant current output within tight limits without the need for any
secondary-side sensing components. Figure 11 shows the output
characteristics of a typical charger implementation.
8
Rev. F 05/18
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