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K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
Display Status of LEDs
V o1 > 0.95 to 0.98 V o1 adj
06002_011106
OK
i
I o L
V i
LEDs " OK " , " i " and " I o L " status versus input voltage
Conditions: I o ≤ I o nom , T C ≤ T C max , V inh ≤ 0.8 V
V i uv = undervoltage lock-out, V i ov = overvoltage lock-out
V i uv
V i min
V i max V i ov
V i abs
V o1 > 0.95 to 0.98 V o1 adj
V o1 < 0.95 to 0.98 V o1 adj
OK
I o L
I o
LEDs " OK " and " I o L " status versus output current
Conditions: V i min – V i max , T C ≤ T C max , V inh ≤ 0.8 V
i
I o nom
I oL
LED " i " versus case temperature
T C
Conditions: V i min – V i max , I o ≤ I o nom , V inh ≤ 0.8 V
i
T C max
V inh threshold
T PTC threshold
LED " i " versus V inh
V i inh Conditions: V i min – V i max , I o ≤ I o nom , T C ≤ T C max
-50 V
LED off
Fig. 23
LED indicators
+0.8 V +2.4 V
LED Status undefined
+50 V
LED on
Battery Charging / Temperature Sensor
All converters with an R-input are suitable for battery
charger applications, but we recommend to choose the
models especially designed for this application, see Model
Selection , table 2.
For optimal battery charging and life expectancy of the
battery an external temperature sensor can be connected
to the R-input. The sensor is mounted as close as possible
to the battery and adjusts the output voltage according to
the battery temperature.
Depending upon cell voltage and the temperature
coefficient of the battery, different sensor types are
available, see Accessories .
Cell voltage [V]
2.45
2.40
2.35
2.30
2.25
2.20
2.15 V o safe
06139b
Vo+
03099d
2.10
–20
–10
0
10
20
30
40
50 °C
Input
Power
supply
Vo–
R
Load
V C = 2.27 V, –3 mV/K
V C = 2.23 V, –3 mV/K
V C = 2.27 V, –3.5 mV/K
V C = 2.23 V, –3.5 mV/K
Fig. 25
Trickle charge voltage versus temperature for defined
temperature coefficient. V o nom is the output voltage with
?
Temperature sensor
Fig. 24
Connection of a temperature sensor
+
Battery
open R-input.
BCD20001-G Rev AC, 16-Dec-2010
Page 15 of 29
www.power-one.com
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