20W 2:1 & 4:1 Wide Input Range with Compact Size of DC to DC Converter for PCB Mounting
SU series is been designed in 2 X 2 standard size delivering output power 20 and 40 watts. Widely input range 2:1 and 4:1 with isolation voltage 1600 VDC; also offer optional remote on/ off control function.
Feature
◆ Standard Size in 2 x 2 x 0.45 inches
◆ DIP Product with Nickel-Coated Copper with Non-Conductive Base, Six-Side Shielded
◆ Operating Temperature: -25~70 degrees
◆ 2:1 & 4:1 Wide Input Range
◆ Isolation Voltage 1600 VDC
◆ Remote On/ Off Control Pin
◆ Minimum Load （of full load）
◆ Single, Dual and Triple Outputs
◆ Efficiency 76~88%
Specification
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specification
Characteristics Conditions min. typ. max. unit
Voltage Range Io nom Vi : 12V （2:1） 9 18 VDC
Vi : 24V （2:1） 18 36 VDC
Vi : 24V （4:1） 10 40 VDC
Vi : 48V （2:1） 36 75 VDC
Vi : 48V （4:1） 18 75 VDC
Filter type
Output Specification
Characteristics Conditions min. typ. max. unit
Output Power 13.2 20 W
Voltage Accuracy Vi nom, Io nom ±2 %
Minimum Load Vi nom 0 %
Line Regulation Vi min ...Vi max, Io nom Single ±0.5 %
Dual ±0.5 %
Triple ±1 / ±5 %
Load Regulation Vi nom, 1Io...Io nom Single ±0.5 %
Dual ±3 %
Triple ±3 / ±5 %
Ripple Vi nom, Io nom, BW = 20MHz 0.2% Vout +20 max. mV
Noise Vi nom, Io nom, BW = 20MHz 0.5% Vout +50 max. mV
Temperature Coefficient Vi nom, Io nom ±0.02 % / ℃
Short Circuit Protection Hiccup mode, Auto-recovery
General Specification
Characteristics Conditions min. typ. max. unit
Switching Frequency Vi nom, Io nom 2:1 Range 200 KHz
4:1 Range 250 KHz
Isolation Voltage Input / Output 1600 VDC
Isolation Resistance Input / Output 100 MΩ
Operating Temperature 2:1 Range: at Full Load -25 +70 ℃
4:1 Range: with derating -25 +70 ℃
Storage Temperature Non operational -55 +105 ℃
Humidity 95 % RH
Cooling Free air convection
Physical Specification
Characteristics Conditions min. typ. max. unit
Dimension Tolerance ±0.5 50.8 x 50.8 x 11.4 mm
2.0 x 2.0 x 0.45 inches
Weight 70 g
Case Material Nickel-Coated Copper with Non-Conductive Base, Six-side shielded.
Model.
Model No. Input Range Output Voltage Output Current Eff
（ V.DC ） （ V.DC ） （ mA ） （%）
Single Output Models
2:1 Range
SU20-12-3.3S 9 ~ 18 3.3 4000 76
SU20-12-5S 9 ~ 18 5 4000 78
SU20-12-12S 9 ~ 18 12 1670 81
SU20-12-15S 9 ~ 18 15 1330 82
SU20-12-24S 9 ~ 18 24 833 83
SU20-24-3.3S 18 ~ 36 3.3 4000 78
SU20-24-5S 18 ~ 36 5 4000 81
SU20-24-12S 18 ~ 36 12 1670 86
SU20-24-15S 18 ~ 36 15 1330 85
SU20-24-24S 18 ~ 36 24 833 88
SU20-48-3.3S 36 ~ 75 3.3 4000 76
SU20-48-5S 36 ~ 75 5 4000 82
SU20-48-12S 36 ~ 75 12 1670 84
SU20-48-15S 36 ~ 75 15 1330 85
SU20-48-24S 36 ~ 75 24 833 87
4:1 Range
SU20-24F-3.3S 10 ~ 40 3.3 4000 82
SU20-24F-5S 10 ~ 40 5 4000 84
SU20-24F-12S 10 ~ 40 12 1670 82
SU20-24F-15S 10 ~ 40 15 1330 82
SU20-24F-24S 10 ~ 40 24 833 82
SU20-48F-3.3S 18 ~ 75 3.3 4000 83
SU20-48F-5S 18 ~ 75 5 4000 85
SU20-48F-12S 18 ~ 75 12 1670 82
SU20-48F-15S 18 ~ 75 15 1330 82
SU20-48F-24S 18 ~ 75 24 833 82
Dual Output Models
2:1 Range
SU20-12-5D 9 ~ 18 ±5 ±2000 77
SU20-12-12D 9 ~ 18 ±12 ±833 81
SU20-12-15D 9 ~ 18 ±15 ±600 82
SU20-24-5D 18 ~ 36 ±5 ±2000 82
SU20-24-12D 18 ~ 36 ±12 ±833 84
SU20-24-15D 18 ~ 36 ±15 ±600 85
SU20-48-5D 36 ~ 75 ±5 ±2000 83
SU20-48-12D 36 ~ 75 ±12 ±833 85
SU20-48-15D 36 ~ 75 ±15 ±600 84
4:1 Range
SU20-24F-5D 10 ~ 40 ±5 ±2000 81
SU20-24F-12D 10 ~ 40 ±12 ±833 82
SU20-24F-15D 10 ~ 40 ±15 ±600 82
SU20-48F-5D 18 ~ 75 ±5 ±2000 81
SU20-48F-12D 18 ~ 75 ±12 ±833 83
SU20-48F-15D 18 ~ 75 ±15 ±600 82
Triple Output Models
2:1 Range
SU20-12-5S12D 9 ~ 18 5 / ±12 2500 / ±300 81
SU20-12-5S15D 9 ~ 18 5 / ±15 2500 / ±250 82
SU20-24-5S15D 18 ~ 36 5 / ±12 2500 / ±300 82
SU20-24-5S15D 18 ~ 36 5 / ±15 2500 / ±250 81
SU20-48-5S15D 36 ~ 75 5 / ±12 2500 / ±300 83
SU20-48-5S15D 36 ~ 75 5 / ±15 2500 / ±250 82
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