Ultra Low Noise, Ultra Compact, Isolated type DC-DC Converter
b
6Watt BLC05 Series
Adjustable Output voltage
7-3-1 Short circuiting Vadj and –Vout terminals
Output voltage can be set at the maximum as per the following table by short-circuiting Vadj and –Vout
terminals. In case of no variable output voltage, open the terminal.
Output voltage for the connection of Vadj terminal
Between Vadj and –Vout terminals
Model name
Open
5.0V
Short
6.0V
BLC05-05S100
BLC05-12S50
BLC05-12W25
12.0V
±12.0V
15.0V
±15.0V
7-3-2 Resistor adjustment control
The output voltage is adjustable by inserting a resistor between Vadj terminal and +Vout terminal or –Vout
terminal
To decrease the output voltage
To increase the output voltage
+Vout
Vadj
+Vout
7
+Vout
Vadj
+Vout
7
4
7
4
7
Rb
Rb
Load
Load
Load
Load
Load
Load
Com
Vadj
Vadj
Com
6
4
BLC-S
BLC-W
4
6
BLC-S
BLC-W
Vo
Vo
Vo
Vo
Ra
Ra
6
5
6
5
-Vout
-Vout
-Vout
-Vout
To increase the output voltage
To decrease the output voltage
Model name
Output voltage: Vo[V], Connecting
Output voltage: Vo[V]，Connecting
resistor: Rb[kΩ]
resistor: Ra[kΩ]
Vo=(49.94Rb+1448.94)/(340.56+10Rb)
Rb=(340.56Vo-1448.94)/(49.94-10Vo)
Variable range: Vo=4.75V min.
Vo=(1448.94+49.94Ra)/(10Ra+240)
Ra=(1448.94-240Vo)/(10Vo-49.94)
Variable range: Vo=6.0V max.
BLC05-05S10
0
Vo=(17.98Rb+105.86)/(15.63+1.5Rb)
Rb=(15.63Vo-105.86)/(17.98-1.5Vo)
Variable range: Vo=11.4V min.
Vo=(105.86+17.98Ra)/(1.5Ra+7.05)
Ra=(105.86-7.05Vo)/(1.5Vo-17.98)
Variable range: Vo=15.0V max.
BLC05-12S50
BLC05-12W25
Vo=(53.04Rb+539.53)/(60.06+2.2Rb)
Rb=(60.06Vo-539.53)/(53.04-2.2Vo)
Vo=(539.53+53.04Ra)/(2.2Ra+18.04)
Ra=(539.53-18.04Vo)/(2.2Vo-53.04)
Variable range: Vo=22.8V min. (±11.4V min.) Variable range: Vo=30.0V max. (±15.0V max.)
Note) If output voltage is made variable, use at the maximum power or less.
If output voltage is made lower, do not connect Rb to resistor which is less than Vo min. setting resistor
value.
8
DC-DC Converter
BDD20170524_A01
BELLNIX [ Bellnix ]
