WRB2405S-3WR2
Isolated DC/DC ConverterThe WRB2405S-3WR2 is a isolated dc/dc converter from MORNSUN®. View the full WRB2405S-3WR2 datasheet below including specifications and datasheet sections.
Manufacturer
MORNSUN®
Category
Isolated DC/DC Converter
Overview
Part: WRA_S-3WR2 & WRB_S-3WR2 Series — MORNSUN Guangzhou Science & Technology Co., Ltd.
Type: Isolated DC/DC Converter
Description: 3W isolated DC/DC converter series with a wide 2:1 input voltage range, regulated dual/single output, ultra-compact SIP package, and an operating ambient temperature range of -40 °C to +85 °C. It features low output ripple & noise, short circuit protection, and remote On/Off control.
Operating Conditions:
- Supply voltage: 4.5–9 V, 9–18 V, 18–36 V, 36–75 V
- Operating temperature: -40 to +85 °C
- I/O isolation test voltage: 1500 VDC
- Switching frequency: 250 KHz (Typ.)
Absolute Maximum Ratings:
- Max supply voltage: 11 V (for 5V nominal input), 20 V (for 12V nominal input), 40 V (for 24V nominal input), 80 V (for 48V nominal input)
- Max junction/storage temperature: -55 to +125 °C
Key Specs:
- Output power: 3W
- Efficiency: 66% (Min) to 84% (Typ)
- Isolation voltage: 1500 VDC (for 1 minute, 1mA max leakage)
- Output ripple & noise: 40 mVp-p (Min) to 150 mVp-p (Max) at 20MHz bandwidth
- Voltage accuracy: ±1% (Typ) to ±3% (Max) at 5%-100% load
- Load regulation: ±0.6% (Typ) to ±3% (Max) at 5%-100% load
- Transient recovery time: 0.5 ms (Typ) to 3 ms (Max)
- Short-circuit protection: Continuous, self-recovery
Features:
- Ultra compact SIP package
- Wide 2:1 input voltage range
- Operating ambient temperature range: -40 °C to +85 °C
- I/O isolation test voltage: 1.5K VDC
- Low output ripple & noise
- Short circuit protection (self-recovery)
- Remote On/Off
- High power density
- EN60950 approved
Applications:
- Communication
- Instruments
- Industrial electronics
Package:
- SIP-8 plastic package (22.00 × 9.50 × 12.00mm)
Features
- Ultra compact SIP package
- Wide 2:1 input voltage range
- Operating ambient temperature range: -40 °C to +85 °C
- I/O isolation test voltage: 1.5K VDC
- Low output ripple & noise
- Short circuit protection (self-recovery)
- Remote On/Off
- High power density
- EN60950 approved
WRA_S-3WR2 & WRB_S-3WR2 series are isolated 3W DC-DC converter products with 2:1 input voltage and conventional voltage output. The product has a relatively compact SIP-8 plastic package, and features high efficiency, operating ambient temperature of -40 °C to +85 °C , remote control, and continuous short-circuit protection. The smaller size and cost-effective design make the converter an ideal solution in communication, instruments, and industrial electronics applications.
| Certification | Part No. | Input Voltage | Input Voltage | (VDC) Output | (VDC) Output | Full Load Efficiency (%) Min./Typ. | Max. Capacitive Load [2] (μF) |
|---|---|---|---|---|---|---|---|
| Certification | Part No. | Nominal (Range) | Max. [1] | Voltage (VDC) | Current (mA) Max./Min. | Full Load Efficiency (%) Min./Typ. | Max. Capacitive Load [2] (μF) |
| WRA0505S-3WR2 | ±5 | ±250/±13 | 72/74 | 1000 | |||
| WRA0512S-3WR2 | ±12 | ±104/±5 | 75/77 | 470 | |||
| WRA0515S-3WR2 | ±15 | ±83/±4 | 75/77 | 330 | |||
| WRA0524S-3WR2 | ±24 | ±52/±3 | 74/76 | 220 | |||
| WRB0503S-3WR2 | 5 | 3.3 | 758/38 | 66/68 | 1800 | ||
| WRB0505S-3WR2 | (4.5-9) | 11 | 5 | 500/25 | 71/73 | 2200 | |
| WRB0509S-3WR2 | 9 | 278/14 | 72/74 | 1000 | |||
| WRB0512S-3WR2 | 12 | 208/10 | 75/77 | 680 | |||
| WRB0515S-3WR2 | 15 | 167/8 | 72/74 | 470 | |||
| WRB0524S-3WR2 | 24 | 104/5 | 74/76 | 330 | |||
| WRA1205S-3WR2 | ±5 | ±300/±15 | 76/78 | 1000 | |||
| WRA1209S-3WR2 | ±9 | ±167/±8 | 76/78 | 680 | |||
| WRA1212S-3WR2 | ±12 | ±125/±6 | 77/79 | 470 | |||
| WRA1215S-3WR2 | ±15 | ±100/±5 | 78/80 | 330 | |||
| WRB1203S-3WR2 | 3.3 | 758/38 | 73/75 | 2700 | |||
| WRB1205S-3WR2 | 12 (9-18) | 20 | 5 | 600/30 | 74/76 | 2200 | |
| WRB1206S-3WR2 | 6 | 500/25 | 77/79 | 1800 | |||
| WRB1209S-3WR2 | 9 | 333/17 | 77/79 | 1000 | |||
| WRB1212S-3WR2 | 12 | 250/13 | 80/82 | 680 | |||
| WRB1215S-3WR2 | 15 | 200/10 | 81/83 | 470 | |||
| WRB1224S-3WR2 | 24 | 125/6 | 79/81 | 330 | |||
| WRA2405S-3WR2 | ±5 | ±300/±15 | 77/79 | 1000 | |||
| WRA2409S-3WR2 | 40 | ±9 | ±167/±8 | 79/81 | 680 | ||
| WRA2412S-3WR2 | ±12 | ±125/±6 | 81/83 | 470 | |||
| WRA2415S-3WR2 | ±15 | ±100/±5 | 81/83 | 330 | |||
| WRB2403S-3WR2 | 24 | 3.3 | 758/38 | 72/74 | 2700 | ||
| WRB2405S-3WR2 | (18-36) | 5 | 600/30 | 79/81 | 2200 | ||
| WRB2409S-3WR2 | 9 | 333/17 | 81/83 | 1000 | |||
| WRB2412S-3WR2 | 12 | 250/13 | 81/83 | 680 | |||
| WRB2415S-3WR2 | 15 | 200/10 | 81/83 | 470 | |||
| WRB2424S-3WR2 | 24 | 125/6 | 81/83 | 330 | |||
| CE | WRA4805S-3WR2 | 48 (36-75) | 80 | ±5 | ±300/±15 | 77/79 | 1000 |
| CE | WRA4812S-3WR2 | 48 (36-75) | 80 | ±12 | ±125/±6 | 80/82 | 470 |
| CE | WRA4815S-3WR2 | 48 (36-75) | 80 | ±15 | ±100/±5 | 80/82 | 330 |
| CE | WRB4803S-3WR2 | 48 (36-75) | 80 | 3.3 | 758/38 | 73/75 | 2700 |
| CE | WRB4805S-3WR2 | 48 (36-75) | 80 | 5 | 600/30 | 74/76 | 2200 |
| CE | WRB4812S-3WR2 | 48 (36-75) | 80 | 12 | 250/13 | 78/80 | 680 |
| CE | WRB4815S-3WR2 | 48 (36-75) | 80 | 15 | 200/10 | 82/84 | 470 |
| CE | WRB4824S-3WR2 | 48 (36-75) | 80 | 24 | 125/6 | 80/82 | 330 |
| Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; | Notes : 1 Exceeding the maximum input voltage may cause permanent damage; |
| Item | Min. | Typ. | Max. | ||
|---|---|---|---|---|---|
| Input Current (full load/no-load) | 3.3V Output | -- | 735/40 | 758/85 | |
| Input Current (full load/no-load) | Others | -- | 805/40 | 846/85 | |
| Input Current (full load/no-load) | 3.3V Output | -- | 278/30 | 286/40 | |
| Input Current (full load/no-load) | Others | -- | 314/30 | 338/40 | |
| Input Current (full load/no-load) | 3.3V Output | -- | 140/20 | 145/40 | |
| Input Current (full load/no-load) | Others | -- | 154/20 | 163/40 | |
| Input Current (full load/no-load) | 3.3V Output | -- | 69/5 | 72/15 | |
| Input Current (full load/no-load) | Others | -- | 78/5 | 85/15 | |
| Reflected Ripple Current | 5VDC Input | 5VDC Input | -- | 20 | -- |
| Reflected Ripple Current | 12VDC Input | 12VDC Input | -- | 20 | -- |
| Reflected Ripple Current | 24VDC Input | 24VDC Input | -- | 55 | -- |
| Reflected Ripple Current | 48VDC Input | 48VDC Input | -- | 55 | -- |
| Surge Voltage (1sec. max.) | 5VDC Input | 5VDC Input | -0.7 | -- | 12 |
| Surge Voltage (1sec. max.) | 12VDC Input | 12VDC Input | -0.7 | -- | 25 |
| Surge Voltage (1sec. max.) | 24VDC Input | 24VDC Input | -0.7 | -- | 50 |
| Surge Voltage (1sec. max.) | 48VDC Input | 48VDC Input | -0.7 | -- | 100 |
| Start-up Voltage | 5VDC Input | 5VDC Input | -- | -- | 4.5 |
| Start-up Voltage | 12VDC Input | 12VDC Input | -- | -- | 9 |
| Start-up Voltage | 24VDC Input | 24VDC Input | -- | -- | 18 |
| Start-up Voltage | 48VDC Input | 48VDC Input | -- | -- | 36 |
| Input Filter | Capacitor filter | Capacitor filter | Capacitor filter | ||
| Hot Plug | Unavailable | Unavailable | Unavailable | ||
| Ctrl * | Ctrl pin open (high resistance) | Ctrl pin open (high resistance) | Ctrl pin open (high resistance) | ||
| Ctrl pin pulled high (current 5-10mA typ. into Ctrl.) | Ctrl pin pulled high (current 5-10mA typ. into Ctrl.) | Ctrl pin pulled high (current 5-10mA typ. into Ctrl.) |
| Output Specifications | Output Specifications | Output Specifications | Output Specifications | Output Specifications | Output Specifications | Output Specifications |
|---|---|---|---|---|---|---|
| Item | Operating Conditions | Operating Conditions | Min. | Typ. | Max. | Unit |
| Voltage Accuracy | 5%-100% load, input voltage range | 5%-100% load, input voltage range | -- | ±1 | ±3 | |
| No-load Output Voltage Accuracy | Input voltage range | WRB1203S-3WR2 WRB4803S-3WR2 | -- | ±5 | ±8 | |
| No-load Output Voltage Accuracy | Input voltage range | Others | -- | ±1.5 | ±5 | |
| Linear Regulation | Input voltage variation from low to high at full load | Main road | -- | ±0.2 | ±0.5 | % |
| Linear Regulation | Input voltage variation from low to high at full load | Side road | -- | -- | ±2 | |
| Load Regulation | 5%-100% load | Main road | -- | ±0.6 | ±1 | |
| Load Regulation | 5%-100% load | Side road | -- | -- | ±3 | |
| Transient Recovery Time | -- | 0.5 | 3 | ms | ||
| Transient Response Deviation | 25% load step change | 25% load step change | -- | ±2.5 | ±5 | % |
Typical Application
All DC-DC converters of this series are tested before delivery using the recommended circuit shown in Fig. 2.
Input and/or output ripple can be further reduced by appropriately increasing the input & output capacitor values Cin1, Cin2, Cs and Cout and/or by selecting capacitors with a low ESR (equivalent series resistance). Cs is used to reduce ripple. No need to add Cs, if ripple meets the demand. Appropriate filter capacitance shall be chosen, start-up problems may be caused if the capacitance is too large. For each output circuit, under the condition of safe and reliable operation, the max. capacity of its filter capacitor should be lower than the max. capacitive load. Single
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