CALL: 508-580-8515, EXT 1
20 Watt, WRF20 DC-DC Single and Triple Output Series, Wide Range Input
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Non-encapsulated, six-sided shielding.
Integral Metal Substrate.
FEATURES
- Industry Standard Pinout
- Six-sided shielding.
- Wide Input Range 4:1
- High Efficiency to 86%
- Remote On/Off
- External Trim
- Under-Voltage Lockout
- -40C to +105C Operation
- Overvoltage and Short Circuit Protection
- 1500Vdc Isolation
The WRF20 series of DC-DC converters have been designed as an Industry Standard Pinout for a wide range of applications where light weight and ease of assembly are needed. Utilizing the latest thermal transfer techniques the WRF20 series packs up to 20 watts of power @ a 4:1 DC input range, in 1.60" x 2.0" x .375" open frame construction and operating temperatures of -40C to +105C. All models are designed to meet UL1950, CSA950 and EN 60950.
MODEL SELECTION GUIDE
| Model Number******* | Input Voltage | Lin@Vin NOM | Output V1,V2,V3** | Output Current/FL | PO/W | Output OVP | Typical Eff. | ||
| Nom | Range | FL | NL | ||||||
| WRF20-12S3V3* | 12Vdc | 9-36 | 1.213 | 7mA | 3.30 | 3.5A | 11.5 | 3.9V | 79% |
| WRF20-12S05* | 12Vdc | 9-36 | 1.626 | 7mA | 5.00 | 3.2A | 16 | 6.8V | 82% |
| WRF20-12S12* | 12Vdc | 9-36 | 1.587 | 7mA | 12.00 | 1.33A | 16 | 15V | 84% |
| WRF20-12S15* | 12Vdc | 9-36 | 1.569 | 7mA | 15.00 | 1.06A | 16 | 18V | 85% |
| WRF20-12T3D12* | 12Vdc | 9-36 | 1.646 | 7mA | 3.3 & +/-12.00 | 3.3 & +/-500 | 16 | 3.9/V1 | 81% |
| WRF20-12T3D15* | 12Vdc | 9-36 | 1.626 | 7mA | 3.3 & +/-15.00 | 3.3 & +/-500 | 16 | 3.9/V1 | 82% |
| WRF20-12T5D12* | 12Vdc | 9-36 | 1.626 | 7mA | 3.3 & +/-15.00 | 3.3 & +/-500 | 16 | 6.8/V1 | 83% |
| WRF20-12T5D15* | 12Vdc | 9-36 | 1.587 | 7mA | 5.0 & +/-15.00 | 3.0 & +/-500 | 16 | 6.8/V1 | 84% |
| WRF20-48S3V3* | 48Vdc | 18-75 | 0.391 | 7mA | 3.30 | 4.5 | 15 | 3.9V | 80% |
| WRF20-48S05* | 48Vdc | 18-75 | 0.502 | 7mA | 5.00 | 4A | 20 | 6.8V | 83% |
| WRF20-48S12* | 48Vdc | 18-75 | 0.490 | 7mA | 12.00 | 1.67A | 20 | 15V | 85% |
| WRF20-48S15* | 48Vdc | 18-75 | 0.484 | 7mA | 15.00 | 1.33A | 20 | 18V | 86% |
| WRF20-48T3D12* | 48Vdc | 18-75 | 0.508 | 7mA | 3.3 & +/-12.00 | 3.3 & +/-500 | 20 | 3.9/V1 | 82% |
| WRF20-48T3D15* | 48Vdc | 18-75 | 0.502 | 7mA | 3.3 & +/-15.00 | 3.3 & +/-500 | 20 | 3.9/V1 | 83% |
| WRF20-48T5D12* | 48Vdc | 18-75 | 0.496 | 7mA | 5.0 & +/-12.00 | 3.0 & +/-500 | 20 | 6.8/V1 | 84% |
| WRF20-48T5D15* | 48Vdc | 18-75 | 0.490 | 7mA | 5.0 & +/-15.00 | 3.0 & +/-500 | 20 | 6.8/V1 | 85% |
| INPUT | |
|---|---|
| Input Voltage Range | 4:1 |
| Note/3 | 9-36Vdc/12V models, 18-75Vdc/48V models |
| Input Filter | Pi Type |
| Under Voltage Lockout | 8.5V/12V models, 16.5V/48V models |
| Remote On: | +5V or open, Ref.(-)Vin |
| Remote Off: | 0.8V Ref(-)Vin |
| Conducted Noise | EN55022, level A/Note 5 |
| OUTPUT | |
|---|---|
| Output Power | 20W Continuous Max |
| Output Voltage/current | See Model table |
| Output Setting Accuracy, Singles | +-1% Typ. +/-1.5% max. |
| Output Setting Accuracy, Aux | +/-3% |
| Load Regulation, Singles/FL-10%L | +/-0.5%, Note 4 and 6. |
| Load Regulation, Aux/FL-50%L | +/-4%, V1, 20%-FL |
| Load Regulation, Aux/FL-20%L | +/-10%, V1, 10%-FL |
| Line Regulation, Total Error Band, Singles | +/-3%, Line/Load and Temp. |
| Line Regulation, Total Error Band, Auxiliary Outputs | +/-10%, Io1,2 and 3@20%-FL |
| Ripple and Noise, 20MhZ BW | 75mV |
| Transient Response/FL-1/2L | 2% deviation, 200uS |
| Temperature Coefficient | +/-.01%c |
| Short Circuit Protection | Indefinite, Modulated, Automatic Recovery |
| GENERAL | |
|---|---|
| Efficiency | See Model Table |
| Isolation Voltage | 1500Vdc/1Min |
| Isolation Resistance | 100M |
| Switching Frequency | 400Khz |
| MBTF | 1.0M hrs.MIL-HDBK-217F Ground Benign@25C |
| ENVIRONMENTAL | |
|---|---|
| Operating Temperature Range | -40C to +105C |
| Operating Temperature Range | -40C to +65C@FL |
| Storage Temperature Range | -55C to +125C |
| Maximum Case Temperature | 110C |
| Humidity | 5% to 95% RH, Non-condensing |
| Cooling | Natural Convection |
| MECHANICAL | |
|---|---|
| Size | 1.60"x 2.00"x 0.375" |
| Weight | 24g |
| Case/Material | Aluminum baseplate with anodized aluminum case. |
| PIN CONNECTIONS | ||
|---|---|---|
| Pin Number | Single | Triple |
| 1 | +Vin | +Vin |
| 2 | -Vin | -Vin |
| 3 | No Pin | No Pin |
| 4 | ON/OFF | ON/OFF |
| 5 | No Pin | +Aux |
| 6 | +V | +V1 |
| 7 | -V | Com |
| 8 | Trim | -Aux |
NOTES:
- O.V.P. protection is across Vo1.
- Consult factory for recommended reflow profile.
- Typical start-up for 12Vin models is 9V. Maximum startup is 9.5V, with full operation down to 9.0V.
- Operation is allowed to No-Load on single outputs, however operation below 10% load may cause ripple and noise to exceed spec.
- External capacitor required to meet conducted noise requirement.
- Auxilliary output regulation rely's on cross coupling of output channels. A 10% minimum load is required on Vo1 for regulation.
- Output currents are maximum for each output however, max power is not to exceed rated power output. Please refer to table.