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Polytron TWB12 Series DC-DC Converters, 12 Watt, Single and Dual Output, 1.25" x 0.80" x 0.40"
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Price (Each): Call or e-mail for quotes or to order.
Available to Order
Item Number: TWB12
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Highly efficient with optional SMD package
With an optional SMD package available, our 12-watt single and dual-output TWB12 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.
TB12 Series Specification Sheet PDF
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Input Current |
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Daburn Part
Number |
Input Voltage
Range (Vdc) |
Output Voltage
(Vdc) |
Output Current
(mA) |
Output Ripple
& Noise
|
No Load |
Full Load |
Efficiency
% |
Minimum Capacitor Load
μF |
| Single Output |
| TWB12-24S3.3 |
24 (9-36) |
3.3 |
3500 |
85m Vp-p |
55 |
602 |
84 |
2000μF |
| TWB12-24S5 |
5.1 |
2400 |
85m Vp-p |
55 |
614 |
87 |
2000μF |
| TWB12-24S12 |
12 |
1000 |
85m Vp-p |
13 |
602 |
87 |
430 μF |
| TWB12-24S15 |
15 |
800 |
85m Vp-p |
11 |
602 |
87 |
300μF |
| TWB12-48S3.3 |
48 (20-72) |
3.3 |
3500 |
85m Vp-p |
17 |
301 |
84 |
2000μF |
| TWB12-48S5 |
3.3 |
2400 |
85m Vp-p |
20 |
307 |
87 |
2000μF |
| TWB12-48S12 |
5.1 |
1000 |
85m Vp-p |
6 |
302 |
87 |
430μF |
| TWB12-48S15 |
12 |
800 |
85m Vp-p |
6 |
298 |
84 |
300μF |
| Dual Output |
| TWB12-24-5 |
24 (9-36) |
±5 |
±1200 |
85m Vp-p |
15 |
625 |
84 |
±1250μF |
| TWB12-24-12 |
±12 |
±500 |
85m Vp-p |
12 |
602 |
87 |
±200 μF |
| TWB12-24-15 |
±15 |
±400 |
85m Vp-p |
20 |
602 |
88 |
±120μF |
| TWB12-48-5 |
48 (20-72) |
±5 |
±1200 |
85m Vp-p |
7 |
309 |
85 |
±1250μF |
| TWB12-48-12 |
±12 |
±500 |
85m Vp-p |
7 |
301 |
87 |
±200 μF |
| TWB12-48-15 |
±15 |
±400 |
85m Vp-p |
7 |
301 |
87 |
±120μF |
Input and Output Specifications:
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
- 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
OUTPUT
- Output Power: 12 Watts max.
- 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
More Specifications:
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
- 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
- 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
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