20 Watt
Single and Dual Output
Low Profile Regulated, 2:1 Wide Input Range
Six-sided continuous shield with a low profile package
Our 20 watt wide input LPA20 series DC-DC converter features a six-sided continuous shield, high efficiency up to 91% and an extra small low profile package of 1" x 1" x 0.39". This design also has no minimum load requirement and meets UL60950-1, EN60950-1 and IEC60950-1 safety requirements.

INPUT
- Operating input voltage range
- 12 Vdc nominal input: 9 - 18 Vdc
- 24 Vdc nominal input: 18 - 36 Vdc
- 48 Vdc nominal input: 36 - 75 Vdc
- Start up voltage
- 12 Vdc nominal input: 9 Vdc
- 24 Vdc nominal input: 18 Vdc
- 48 Vdc nominal input: 36 Vdc
- Shotdown voltage
- 12 Vdc nominal input: 8 Vdc
- 24 Vdc nominal input: 16 Vdc
- 48 Vdc nominal input: 33 Vdc
- Start up time
- Constant resistive load
- Power up: 30 mS
- Remote On/Off: 30 mS
- Constant resistive load
- Input surge voltage, 1 sec. max
- 12 Vdc nominal input: 25 Vdc
- 24 Vdc nominal input: 50 Vdc
- 48 Vdc nominal input: 100 Vdc
- Input filter: Pi type
- Input reflected ripple current
- Nominal input and full load: 30 mAp-p
- Remote On/Off: Referred to -Vin pin
- Positive logic
- DC-DC ON: Open or 3 - 15 Vdc
- DC-DC OFF: Short or 0 - 1.2 Vdc
- Negative logic
- DC-DC ON: Short or 0 - 1.2 Vdc
- DC-DC OFF: Open or 3 - 15 Vdc
- Positive logic
- Input current of control in: -0.5 to 1 mA
- Remote off input current: 2.5 mA
OUTPUT
- Voltage accuracy ±1%
- Line regulation
- Low line to high line at full load
- Single: ±0.2%
- Dual: ±0.5%
- Low line to high line at full load
- Load regulation
- No load to full load
- Single: ±0.2%
- Dual: ±1%
- 10% load to 90% load
- Single: ±0.1%
- Dual: ±0.8%
- No load to full load
- Cross regulation
- Asymmetrical load 25%/100%FL
- Dual: ±5%
- Asymmetrical load 25%/100%FL
- Voltage and adjustability
- Single output, 24 Vout: -10 to 20%
- Others: ±10%
- Ripple and noise, measured by 20 MHz bandwidth
- With a 1µF M/C X7R and a 10µF T/C, 3.3, 5, 12 and 15 Vout, Single: 75 mVp-p
- With 2 pcs. of 6.8µF/50V X7R MLCC, 24 Vout, Single: 75 mVp-p
- With a 1µF M/C X7R and a 10µF T/C per output, 12 and 15 Vout, Dual: 100 mVp-p
- With a 4.7µF/50V X7R MLCC per output, 24 Vout, dual: 100 mVp-p
- Temperature coefficient: ±0.02%/°C
- Transient response recovery time: 250 µS
- Over voltage protection
- 3.3 Vout: 3.7 - 5.4 Vdc
- 5 Vout: 5.6 - 7 Vdc
- 12 Vout: 13.5 - 19.6 Vdc
- 15 Vout: 16.8 - 20.5 Vdc
- 24 Vout: 29.1 - 32.5 Vdc
- Over load protection
- % of lout rated, hiccup mode: 150%
- Short circuit protection: continuous, automatic recovery
GENERAL
- Isolation voltage
- Input to output, 1 min.: 1600 Vdc
- Input (output) to case, 1 min.: 1000 Vdc
- Isolation resistance: 500 Vdc
- Isolation capacitance: 1500 pF
- Switching frequency
- 3.3 and 5 Vout: 248 to 303 kHz
- Others: 297 to 363 kHz
- Design meets safety standards: UL60950-1, EN60950-1 and IEC60950-1
ENVIRONMENTAL
- Operating ambient temperature
- Without derating: -40 to 60°C
- With derating: 60 to 101°C
- Maximum case temperature: 105°C
- Storage temperature range: -55 to 125°C
- Thermal impedance, natural convection (20LFM)
- Without heat-sink: 17.6°C/W
- With heat-sink: 14.8°C/W
- Thermal shock: MIL-STD-810F
- Vibration: MIL-STD-810F
- Relative humidity: 5 to 95%
PHYSICAL
- Case material: Nickel-coated copper
- Base material: FR4 PCB
- Potting material: Silicone (UL94 V-0)
- Weight: 15 g. (0.53 oz.)
- MTBF: 1.477x106 hrs, MIL-HDBK-217F, full load
EMC CHARACTERISTICS
- EMI
- ENB55022: Class A, 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: ±2kV, Perf. Criteria A
- Conducted immunity
- EN61000-4-6: 10Vr.m.s, Perf. Criteria A
Input Voltage Range (Vdc) | Output Voltage (Vdc) | Output Current Full Load (A) | Input Current No load (mA) | Efficiency (%) | Model Number | Max. Capacitor Load µF |
---|---|---|---|---|---|---|
Single Output | ||||||
9 - 18 | 3.3 | 4500 | 10 | 89 | LPA20-12S33 | 7000 |
5 | 4000 | 10 | 89 | LPA20-12S5 | 5000 | |
12 | 1670 | 10 | 89 | LPA20-12S12 | 850 | |
15 | 1330 | 10 | 89 | LPA20-12S15 | 700 | |
24 | 833 | 12 | 89 | LPA20-12S24 | 220 | |
18 - 36 | 3.3 | 4500 | 10 | 90 | LPA20-24S33 | 7000 |
5 | 4000 | 10 | 91 | LPA20-24S5 | 5000 | |
12 | 1670 | 6 | 90 | LPA20-24S12 | 850 | |
15 | 1330 | 6 | 91 | LPA20-24S15 | 700 | |
24 | 833 | 10 | 91 | LPA20-24S24 | 220 | |
36 - 75 | 3.3 | 4500 | 10 | 90 | LPA20-48S33 | 7000 |
5 | 4000 | 10 | 90 | LPA20-48S5 | 5000 | |
12 | 1670 | 4 | 90 | LPA20-48S12 | 850 | |
15 | 1330 | 4 | 90 | LPA20-48S15 | 700 | |
24 | 833 | 8 | 91 | LPA20-48S24 | 220 | |
Dual Output | ||||||
9 - 18 | ±12 | ±833 | 10 | 89 | LPA20-12-12 | ±500 |
±15 | ±667 | 10 | 90 | LPA20-12-15 | ±350 | |
±24 | ±417 | 14 | 90 | LPA20-12-24 | ±100 | |
18 - 36 | ±12 | ±833 | 6 | 90 | LPA20-24-12 | ±500 |
±15 | ±667 | 6 | 90 | LPA20-24-15 | ±350 | |
±24 | ±417 | 12 | 91 | LPA20-24-24 | ±100 | |
36 - 75 | ±12 | ±833 | 4 | 89 | LPA20-48-12 | ±500 |
±15 | ±667 | 4 | 90 | LPA20-48-15 | ±350 | |
±24 | ±417 | 10 | 91 | LPA20-48-24 | ±100 |