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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
  • 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
  • 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%
  • Load regulation
    • No load to full load
      • Single: ±0.2%
      • Dual: ±1%
    • 10% load to 90% load
      • Single: ±0.1%
      • Dual: ±0.8%
  • Cross regulation
    • Asymmetrical load 25%/100%FL
      • Dual: ±5%
  • 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 NumberMax. 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