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
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%
Load Regulation
- No load to Full Load
  - 3.3 Vout: ±2.0%
  - Others: ±1.5%
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 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
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

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