20 Watt
Single and Dual Output DIN Rail, Wide Input
Reliable snap-on for DIN rail
Our 20 watt single and dual output DC-DC converter has overload and short circuit protection, a reliable snap-on for DIN Rail TS-35/7.5 or TS-35/15 and internal input fuse and reverse polarity protection. The model has case protection that meets IP 20 (IEC60529) and an internal input in-rush current limit circuit.

INPUT
- Voltage Range
- 24 Vdc nominal input: 9.5 - 36 Vdc
- 48 Vdc nominal input: 18 - 75 Vdc
- Input Surge Voltage
- 24 Vdc input: 50 Vdc 100 ms. max
- 48 Vdc input: 100 Vdc 100 ms. max
- Input fuse (slow blow)
- 24 Vdc input: 6A
- 48 Vdc input: 4A
- In-rush current: 15A
- Input reflected ripple current: 10 mAp-p
- Start up time
- Nominal input and Power Up: 100 mS
- Constant resistive load
- Startup Voltage
- 24 Vdc input: 9.5 Vdc
- 48 Vdc input: 18 Vdc
- Shutdown Voltage
- 24 Vdc input: 7.5 Vdc
- 48 Vdc input: 15 Vdc
- Remote ON/OFF
- Positive logic
- DC-DC ON: Open or 3 V<Vr<12V
- DC-DC OFF: Short or 0 V<Vr<1.2V
- Positive logic
- Negative Logic
- DC-DC ON: Short or 0V<Vr<1.2V
- DC-DC OFF: Open or 3V<Vr<12V
- Input current of Remote control pin
- Nominal Input: 0.5 mA.
- Remote off state input current
- Nominal input: 2.5 mA.
OUTPUT
- Output power: 20 Watts Max.
- Voltage accuracy
- 3.3 Vout: ±2.0%
- Others: ±1.2%
- Minimum Load: 0%
- Line Regulation
- LL to HL at Full Load
- Single: ±0.2%
- Dual: ±0.5%
- LL to HL at Full Load
- Load Regulation
- No load to Full Load
- 3.3 Vout: ±2.0%
- Others: ±1.5%
- No load to Full Load
- Load Cross Regulation
- Dual: ±5%
- Ripple and Noise (20 mHZ Bandwidth): 50 - 75 mVp-p
- Temperature Coefficient: ±0.02%/°C Max.
- Transient Response recovery time
- 25% load step change: 250µS
- Over voltage protection
- 3.3 Vdc Output: 3.9 Vdc
- Zener diode clamp
- 5 Vdc Output: 6.2 Vdc
- 12 Vdc Output: 15 Vdc
- 15 Vdc Output: 18 Vdc
- Output Indicator: Green LED
- Over load protection
- 0% of FL at nominal input: 150%
- Short circuit protection: Hiccup, automatic recovery
GENERAL
- Efficiency: 83 - 87%
- Isolation Voltage
- Input to Output: 1600 Vdc, min. 1 minute
- Input (Output) to Chassis: 1600 Vdc, min. 1 minute
- Isolation Voltage
- Isolation resistance: 109 ohms, min.
- Isolation capacitance: 4000 pF, max.
- Switching frequency: 400 KHz ±10%
- Design meets safety standard: IEC60950-1, UL60950-1, EN60950-1
- Chassis material: Aluminum
- Dimensions: 4.2 x 2.27 x 0.97 (125.0 x 57.6 x 24.5 mm)
- Weight: 5.19 oz. (147.5 g)
- MTBF
- BELLCORE TR-NWT-000332: 1.289 x 106 hrs.
- MIL-HDBK-217F: 9.197 x 105 hrs.
ENVIRONMENTAL
- Operating ambient temperature: -40 to 85°C without derating
- Storage temperature range: -40 to 105°C
- Thermal Shock: MIL STD 810F
- Vibration: MIL STD 810F
- Relative Humidity: 5 - 95% RH
EMC CHARACTERISTICS
- EMI
- EN55022: Class B
- ESD:
- EN61000-4-2, Perf. Criteria A
- Air: ±8KV
- Contact: ±6KV
- EN61000-4-2, Perf. Criteria A
- Radiated Immunity
- EN61000-4-3: 10 V/m, Perf. Criteria A
- Fast Transient
- EN61000-4-4: ±2KV, Perf. Criteria A
- Surge
- EN61000-4-5: ±0.5KV, Perf. Criteria A
- Conducted Immunity
- EN61000-4-6: 10 Vrms, Perf. Criteria A
Output Current (mA) | Input Current (mA) | |||||||||
Input Voltage Range (Vdc) |
Output Voltage (Vdc) |
Min. load | Full load | Output Ripple & Noise |
No load | Full load | Efficiency (%) | Model Number | Case | Capacitor Load x. |
Single Output | ||||||||||
9.5 - 36 | 3.3 | 0 | 5500 | 60mVp-p | 52 | 957 | 83 | DMWB20-24S5 | DR | 18000μF |
5 | 0 | 4800 | 75mVp-p | 67 | 1016 | 86 | DMWB20-24S5.1 | DR | 9600μF | |
12 | 0 | 1670 | 75mVp-p | 26 | 1043 | 84 | DMWB20-24S12 | DR | 1650μF | |
15 | 0 | 1330 | 75mVp-p | 27 | 1039 | 84 | DMWB20-24S15 | DR | 1050μF | |
18 - 75 | 3.3 | 0 | 5500 | 60mVp-p | 37 | 473 | 83 | DMWB20-48S3.3 | DR | 18000μF |
5 | 0 | 4000 | 75mVp-p | 37 | 508 | 86 | DMWB20-48S5 | DR | 9600μF | |
12 | 0 | 1670 | 75mVp-p | 18 | 515 | 85 | DMWB20-48S5.1 | DR | 1650μF | |
15 | 0 | 1330 | 75mVp-p | 18 | 513 | 85 | DMWB20-48S15 | DR | 1050μF | |
Dual Output | ||||||||||
9.5 - 36 | ±5 | 0 | ±2000 | 100mVp-p | 59 | 1016 | 86 | DMWB20-24-5 | DR | ±4800μF |
±12 | 0 | ±833 | 100mVp-p | 34 | 1028 | 85 | DMWB20-24-12 | DR | ±825μF | |
±15 | 0 | ±667 | 100mVp-p | 35 | 1029 | 85 | DMWB20-24-15 | DR | ±525μF | |
18 - 75 | ±5 | 0 | ±2000 | 100mVp-p | 37 | 502 | 87 | DMWB20-48-5 | DR | ±4800μF |
±12 | 0 | ±833 | 100mVp-p | 20 | 508 | 86 | DMWB20-48-12 | DR | ±825μF | |
±15 | 0 | ±667 | 100mVp-p | 20 | 508 | 86 | DMWB20-48-15 | DR | ±525μF |