Datasheet

www.recom-power.com
REV.: 7/2018 ECO-3
DC/DC Converter
Specifications (measured @ Ta= 25°C, nominal input voltage, full load and after warm up unless otherwise specified)
RS6
Series
continued on next page
Output Voltage Trimming
Trim Calculation
Practical Example:
Trim UP
Trim DOWN
Vref
+Vout
Trim
R1
R
down
R3
R2
Vref
-Vout
Trim
R1
R
up
R3
R2
Vref
+Vout
Trim
R1
R
down
R3
R2
Vref
-Vout
Trim
R1
R
up
R3
R2
Vout 3.3V 5V 12V 15V
R1
16.74kΩ 10kΩ 38kΩ 50kΩ
R2
10kΩ
R3
52.3kΩ 39kΩ 68kΩ 68kΩ
Vref
1.24V 2.5V
a =
Vref
* R1 = kΩ
(Vout + DVout) - Vref
R
up
=
a*R2
- R3 = kΩ
R2 - a
R
down
=
b*R1
- R3 = kΩ
R1 - b
a =
2.5V
* 10kΩ = 8.33kΩ
(5V + 0.5V) - 2.5V
b =
(Vout + DVout) - Vref
* R2 = kΩ
Vref
R
up
=
8.33kΩ * 10kΩ
- 39 = 11.0kΩ
10
kΩ
- 8.33
kΩ
RS6-xx03.3S
RS6-xx05S
RS6-xx12S
RS6-xx15S
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 3.33 3.36 3.39 3.43 3.46 3.49 3.53 3.56 3.59 3.63 Volts
R
up
= 1151.73 360.87 197.07 126.28 86.79 61.60 44.14 31.32 21.15 13.76 kOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 5.05 5.10 5.15 5.20 5.25 5.30 5.35 5.4 5.45 5.50 Volts
R
up
= 461.00 211.00 127.67 86.00 61.00 44.33 32.43 23.50 16.56 11.00 kOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 12.12 12.24 12.36 12.48 12.60 12.72 12.84 12.96 13.08 13.20 Volts
R
up
= 723.67 327.83 195.89 129.92 90.33 63.94 45.10 30.96 19.96 11.17 kOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 15.15 15.3 15.45 15.60 15.75 15.90 16.05 16.20 16.35 16.50 Volts
R
up
= 765.33 348.67 209.78 140.33 98.67 70.89 51.05 36.17 24.59 15.33 kOhms
Trim Up:
Vout = 5V, DVout = 0.5V (10%), Vref= 2.5V
Vout = nom. Output Voltage
DVout = Output Voltage Trim
R
up
= Trim up resistor
R
down
= trim down resistor
a = trim up factor
b = trim down factor
DVout = Vout - Vout
trimmed