12 Watt
2:1 Wide Input Range
Industrial DC/DC Converters in DIP and SMD Packages
TWA12 Series DC/DC converters feature 2:1 wide input range, 1600-V isolation and remote ON/OFF control for energy savings. There is no minimum load requirement, and efficiencies are as high as 88 percent. Available in 1.26 x 1.00 x 0.44-inch SMD or 1.25 x 0.80 x 0.40-inch DIP packages, the TWA12 Series is well-suited for industrial and ITE applications. The units come with an internal EN55032 Class A-compliant filter and meet IEC/UL/EN60950-1 and IEC/UL/EN62368-1 safety standards. Additional safeguards include over current, over voltage and short circuit protections.
INPUT
- Voltage range, Vdc:
- 9 Min., 12 Typ., 18 Max., 12 Vin(nom)
- 18 Min., 24 Typ., 36 Max., 24 Vin(nom)
- 36 Min., 48 Typ., 75 Max., 48 Vin(nom)
- Start up voltage, Vdc
- 9 Max., 12 Vin (nom)
- 18 Max., 24 Vin (nom)
- 36 Max., 48 Vin (nom)
- Shutdown voltage, Vdc
- 7 Min., 8 Typ., 8.8 Max., 12 Vin(nom)
- 15 Min., 16 Typ., 17.5 Max., 24 Vin(nom)
- 32 Min., 33 Typ., 35 Max., 48 Vin(nom)
- Start up time, ms
- 450 Typ. Power up, Constant resistive load
- 5 Typ. Remote ON/OFF
- Input surge voltage, Vdc
- 100 ms, Max.
- 36 Max., 12 Vin(nom)
- 50 Max., 24 Vin(nom)
- 100 Max., 48 Vin(nom)
- Input filter: Pi type
- Remote ON/OFF
- Referred to -INPUT pin
- Open or 3 - 12 Vdc, DC-DC ON, Positive logic
- Short or 0 - 1.2 Vdc, DC-DC OFF, Positive logic
- -0.5 - 0.5 mA, Input current of Ctrl pin
- 2.5 mA Typ. Remote off input current
OUTPUT
- Voltage accuracy, %: ±1.2
- Line regulation, %:
- ±0.2, Low line to high line at full load, Single
- ±0.5, Low line to high line at full load, Dual
- Load regulation, %:
- No load to full load
- ±1, DIP Type, Single, 2.5Vout
- ±0.5, DIP Type, Single, Others
- ±1, DIP Type, Dual
- ±1, SMD Type, Single, 2.5Vout
- ±1, SMD Type, Single, Others
- ±1, SMD Type, Dual
- Cross regulation, %: ±5, Asymmetrical load 25%/100% FL, Dual
- Ripple and noise, mVp-p: 85 Typ., Measured by 20MHz bandwidth
- Temperature coefficient, %/ºC: ±0.02
- Transient response recovery time, μs: 250 Typ., 25% load step change
- Over voltage protection, Vdc:
- 3.9 Typ., 2.5Vout
- 3.9 Typ., 3.3Vout
- 6.2 Typ., 5.1Vout
- 15 Typ., 12Vout
- 18 Typ., 15Vout
- Over load protection, %: 150 Typ., % of lout rated
- Short circuit protection: Continuous, automatic recovery
GENERAL SPECIFICATIONS
- Isolation Voltage:
- 1 minute
- 1600 Min., DIP Type, Input to Output
- 1600 Min., DIP Type, Inout (Output) to Case
- 1600 Min., SMD Type, Input to Output
- 1000 Min., SMD Type, Input (Output) to Case
- Isolation resistance, GΩ: 1 Min., 500Vdc
- Isolation capacitance, pF: 1200 Max.
- Switching frequency, kHz: 360 Min., 400 Typ., 440 Max.
ENVIRONMENTAL SPECIFICATIONS
- Operating ambient temperature °C:
- -40 Min., 61 Max., 2.5Vout, 3.3Vout, ±5Vout, Without derating
- 61 Min., 100 Max., 2.5Vout, 3.3Vout, ±5Vout, With derating
- -40 Min., 66 Max., Others, Without derating
- 66 Min., 100 Max., Others, With derating
- Maximum case temperature, °C: 100 Max.
- Storage temperature range: -55 Min., 125 Max.
- Thermal impedance: 20 Typ.
- Thermal shock: MIL-STD-810-F
- Vibration: MIL-STD-810-F
- Relative humidity: 5% to 95% RH
PHYSICAL SPECIFICATIONS
- Design meet safety standard: IEC/EN/UL/EN60950-1, 62368, UL:E193009, CB:UL(Demko)
- Case material: Nickel coated copper
- Base material: Non-conductive black plastic
- Potting material: Epoxy (UL94 V-0)
- Dimensions:
- DIP Type: 1.25" x 0.80" x 0.40" (31.8 x 20.3 x 10.2 mm)
- SMD Type: 1.26" x 1.00" x 0.44" (32.0 x 25.4 x 11.20 mm)
- Weight: 18g (0.62oz)
- MTBF: 2.064 × 106 hrs, MIL-HDBK-217F
EMC SPECIFICATIONS
- EMI: EN55032, Without external components, Class A, Class B
- ESD: EN61000-4-2, Air ±8kV and Contact ±6kV, Perf. Criteria A
- Radiated immunity: EN61000-4-3, 10V/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, 10Vr.m.s, Perf. Criteria A
- Power frequency magnetic field: EN61000-4-8, 100A/m continuous; 1000A/m 1 second, Perf. Criteria A
| Input Range (Vdc) | Output Voltage (Vdc) | Output Current @ Full load (mA) | Input Current @ No Load (mA) | Efficiency (%) | Model Number | Max. Capacitor Load (μF) |
|---|---|---|---|---|---|---|
| 9 - 18 | 2.5 | 3500 | 50 | 82 | TWA12-12S25 | 2000 |
| 9 - 18 | 3.3 | 3500 | 60 | 84 | TWA12-12S33 | 2000 |
| 9 - 18 | 5.1 | 2400 | 53 | 86 | TWA12-12S5 | 2000 |
| 9 - 18 | 12 | 1000 | 15 | 86 | TWA12-12S12 | 430 |
| 9 - 18 | 15 | 800 | 17 | 86 | TWA12-12S15 | 300 |
| 18 - 36 | 2.5 | 3500 | 36 | 83 | TWA12-24S25 | 2000 |
| 18 - 36 | 3.3 | 3500 | 36 | 85 | TWA12-24S33 | 2000 |
| 18 - 36 | 5.1 | 2400 | 35 | 87 | TWA12-24S5 | 2000 |
| 18 - 36 | 12 | 1000 | 16 | 87 | TWA12-24S12 | 430 |
| 18 - 36 | 15 | 800 | 17 | 87 | TWA12-24S15 | 300 |
| 36 - 75 | 2.5 | 3500 | 10 | 83 | TWA12-48S25 | 2000 |
| 36 - 75 | 3.3 | 3500 | 14 | 85 | TWA12-48S33 | 2000 |
| 36 - 75 | 5.1 | 2400 | 23 | 87 | TWA12-48S5 | 2000 |
| 36 - 75 | 12 | 1000 | 11 | 87 | TWA12-48S12 | 430 |
| 36 - 75 | 15 | 800 | 5 | 87 | TWA12-48S15 | 300 |
| 9 - 18 | ±5 | ±1200 | 24 | 82 | TWA12-12-5 | ±1250 |
| 9 - 18 | ±12 | ±500 | 19 | 87 | TWA12-12-12 | ±200 |
| 9 - 18 | ±15 | ±400 | 24 | 87 | TWA12-12-15 | ±120 |
| 18 - 36 | ±5 | ±1200 | 15 | 83 | TWA12-24-5 | ±1250 |
| 18 - 36 | ±12 | ±500 | 15 | 88 | TWA12-24-12 | ±200 |
| 18 - 36 | ±15 | ±400 | 18 | 88 | TWA12-24-15 | ±120 |
| 36 - 75 | ±5 | ±1200 | 6 | 83 | TWA12-48-5 | ±1250 |
| 36 - 75 | ±12 | ±500 | 6 | 88 | TWA12-48-12 | ±200 |
| 36 - 75 | ±15 | ±400 | 6 | 88 | TWA12-48-15 | ±120 |