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12 Watt

Single and Dual Output

Highly efficient with optional SMD package

With an optional SMD package available, our 12 watt single and dual output DC-DC converter features a five-sided continuous EMI shield, a standard package of 1.25" x 0.80" x 0.40" and meets UL6095-1, EN 60950-1, IEC60950-1. This design is 88% efficient and compliant with RoHS.

INPUT

  • Voltage Range
    • 24 Vdc nominal input: 9 - 36 Vdc
    • 48 Vdc nominal input: 18 - 75 Vdc
  • Input filter: Pi Filter
  • Input Surge Voltage
    • 24 Vdc input: 50 Vdc 100 ms, max.
    • 48 Vdc input: 100 Vdc 100 ms, max.
  • Input Reflected Ripple Current: 20 mAp-p
  • Start up Time
    • Normal input and constant resistive load
      • Power up: 450 ms
  • Startup Voltage
    • 24 Vdc input: 9 Vdc, max.
    • 48 Vdc input: 18 Vdc, max.
  • Shutdown Voltage
    • 24 Vdc input: 8 Vdc
    • 48 Vdc input: 16 Vdc
  • Remote ON/OFF
    • DC-DC ON: Open or 3V<Vr<12V
    • DC-DC OFF: Short or 0V<Vr<1.2V
  • Input Current of Remote Control Pin
    • Nominal input: -0.5 - 0.5 mA
  • Remote off state input current
    • Nominal input: 2.5 mA

OUTPUT

  • Output Power: 12 Watts max.
    • Voltage Accuracy: ±1.2%
  • Minimum Load: 0%
  • Line Regulation
    • LL to HL at Full Load: ±0.2%
  • Load Regulation
    • No Load to Full Load
      • Single (DIP): ±0.5%
      • Single (SMD): ±1.0%
      • Dual (SMD, DIP): ±1.0%
  • Cross Regulation Asymmetrical Load 25%/100% FL: ±5%
  • Ripple and Noise (20 MHz band width): 85 mVp-p
  • Temperature Coefficient: ±0.2% /°C, max.
  • Transient Response recovery time
    • 25% load step change: 250μS
    • 3.3 Vdc output: 3.9 Vdc
  • Over voltage protection (only single)
    • 5.1 Vdc output: 6.2 Vdc
    • 12 Vdc output: 15 Vdc
    • 15 Vdc output: 18 Vdc
  • Overload Protection
    • Percent of FL at nominal input: 150%
  • Short Circuit Protection: Continuous, automatic recovery

GENERAL

  • Efficiency: Up to 88%
  • Isolation Voltage
    • Input to Output: 1600 Vdc, min. 1 minute
    • Input (Output) to Case
      • DIP: 1600 Vdc, min. 1 minute
      • SMD: 1000 Vdc, min. 1 minute
  • Isolation Resistance
    • 500 Vdc: 109 ohms, min.
  • Isolation Capacitance: 1500 pF, max.
  • Switching Frequency: 400 kHz ±10%
  • Approvals and Standard: IEC60950-1, UL60950-1, EN60950-1
  • Case Material: Nickel Coated Copper
  • Base Material: Non-conductive black plastic
  • Potting Material: Epoxy (UL94-V0)
  • Dimensions: 1.25 x 0.80 x 0.40 inches (31.8 x 20.3 x 10.2 mm)
  • Weight: 18 g (0.62 oz.)
  • MTBF
    • BELLCORE TR-NWT-000332: 2.350 x 106 hrs
    • MIL-HDBK 217F: 8.745 x 105 hrs

ENVIRONMENTAL

  • Operating Ambient Temperature
    • Vo:5V, 12V, 15V: -40 to 69°C without derating
    • ±12V, ±15V: 69 to 105°C with derating
      • -40 to 61°C without derating
  • Vo:3.3V, ±5V
    • 61 to 105°C with derating
  • Maximum Case Temperature: 105°C
  • Storage Temperature Range: -55 to 125°C
  • Thermal Impedance:
    • Natural Convection: 20°C/Watt
  • Thermal Shock: MIL-STD-810F
  • Vibration: MIL-STD-810F
  • Relative Humidity: 5 - 95% RH

EMC CHARACTERISTICS

  • CMI: EN55022, EN55011, 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, ±1KV, Perf. Criteria A
  • Conducted Immunity: EN61000-4-6, 10Vrms, Perf. Criteria A
        Input Current (mA)      
Input Voltage
Range (Vdc)		 Output Voltage
(Vdc)		 Output Current
(mA)		 Output Ripple
& Noise		 No load  Full load Efficiency
% 		 Model Number* Capacitor
Load max. 
Single Output
24 (9-36) 3.3 3500 85m Vp-p 55 602 84 TWB12-24S3.3 2000μF
5.1 2400 85m Vp-p 55 614 87 TWB12-24S5 2000μF
12 1000 85m Vp-p 13 602 87 TWB12-24S12 430μF
15 800 85m Vp-p 11 602 87 TWB12-24S15 300μF
48 (20-72) 3.3 3500 85m Vp-p 17 301 84 TWB12-48S3.3 2000μF
5.1 2400 85m Vp-p 20 307 87 TWB12-48S5 2000μF
12 1000 85m Vp-p 6 302 87 TWB12-48S12 430μF
15 800 85m Vp-p 6 298 84 TWB12-48S15 300μF
Dual Output
24 (9-36) ±5 ±1200 85m Vp-p 15 625 84 TWB12-24-5 ±1250μF
±12 ±500 85m Vp-p 12 602 87 TWB12-24-12 ±200μF
±15 ±400 85m Vp-p 20 602 88 TWB12-24-15 ±120μF
48 (20-72) ±5 ±1200 85m Vp-p 7 309 85 TWB12-48-5 ±1250μF
±12 ±500 85m Vp-p 7 301 87 TWB12-48-12 ±200 μF
±15 ±400 85m Vp-p 7 301 87 TWB12-48-15 ±120μF