3 Watt
Single and Dual Output For Medical Applications
Promoting patient's safety
Our 3 watt single and dual output DC-DC converter can be used in a variety of medical applications. This design features 2 MOPP isolation, 5000 VAC input/output and a 2µA patient leakage current, and has been thoroughly tested to meet patient safety requirements including IEC60601-1.
The 3 watt single and dual converter also features a 4:1 wide input voltage range, reinforced insulation and a built-in EMI Class A filter.

INPUT
- Voltage Range:
- 24 Vdc nominal input: 9 - 36 Vdc
- 48 Vdc nominal input: 18 - 75 Vdc
- Input filter: capacitor type (pi filter)
- Input Surge Voltage:
- 24 Vdc input: 50 Vdc 100ms, max.
- 48 Vdc input: 100 Vdc 100ms, max.
- Input Reflected Ripple Current: 20 mA p-p
- Start up Time: Constant resistive load
- Power up: 30 ms
- Remote ON/OFF: 30 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
- ON: Open or 0 - 1.2 Vdc CD-CD
- OFF: 2.2 - 12 Vdc CD-CD
OUTPUT
- Output Power: 3 watts max.
- Voltage Accuracy: ±1.0%
- Line Regulation: LL to HL at Full
- Single: ±0.2%
- Dual: ±0.5%
- Load Regulation: No Load to Full Load
- Single: ±0.2%
- Dual: ±1.0%
- Cross Regulation: Asymmetrical Load 25 or 100% FL
- Dual: ±5%
- Ripple and Noise:
- With a 10µF/25V X7R MLCC
- 3.3 Vout, 5 Vout: 30 mVp-p
- 12 Vout, 15 Vout: 40 mVp-p
- With a 4.7µF/50V X7R MLCC
- 24 Vout: 50 mVp-p
- With a 10µF/25V X7R MLCC
- Temperature Coefficient: ±0.2% °C, max.
- Transient Response recovery Time: 25% load step change, 250µS
- 3.3 Vout: 3.7 - 5.4 Vdc
- 5 Vout: 5.6 - 7.0 Vdc
- Over voltage protection, continuous clamp
- 12 Vout: 3.5 - 19.6 Vdc
- 15 Vout: 18.3 - 22.0 Vdc
- 24 Vout: 29.1 - 32.5 Vdc
- Overload Protection
- Percent of Iout rated, hiccup mode: 150%
- Short Circuit Protection: Continuous, automatic recovery
GENERAL
- Efficiency: 81-86%
- Isolation Voltage, Input to Output: 5000 VAC, min. 1 minute
- Isolation Capacitance: 12 - 17 pF
- Leakage Current: 24 VAC, 60 HZ, 2 µA
- Switching Frequency: 300 kHz Typ.
- Clearance and Creepage: 8 mm
- Approvals and Standard: ANSI/AAMI, ES60601-1, IEC6060-1, EN60601-1
- Case Material: Nickel Coated Copper
- Base Material: Non-conductive black plastic
- Potting Material: Silicon (UL94-V0)
- Dimensions: 1.25 x 0.80 x 0.40 inches (31.8 x 20.3 x 10.2 mm)
- Weight: 14 g (0.48 oz.)
- MTBF: MIL-HDBK-217F Ta25϶C, Full load: 8.638 x 105 hours
ENVIRONMENTAL
- Operating Ambient Temperature
- Without derating: -40°C to 77°C
- With derating: 77°C to 105°C
- Storage Temperature Range -55°C to 125°C
- Thermal Impedance: Natural Convection (20LFM): 18°C/Watt
- Thermal Shock: MIL-STD-810F
- Vibration: MIL-STD-810F
- Relative Humidity: 5 to 95% RH
EMC CHARACTERISTICS
- EMI
- EN55011, EN55022 and FCC Part 18: Class A, Class B
- ESD
- EN61000-4-2 (Perf. Criteria A)
- Air ±8KV
- Contact ±6KV
- 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: ±2KV, Perf. Criteria A
- Conducted Immunity
- EN61000-4-6: 10 Vrms, Perf. Criteria A
Notes:
1. The TWB3/MHIA5 Series can meet EMI Class A with no external filter. And Class B only with external components.
Input Voltage Range (Vdc) |
Output Voltage (Vdc) |
Output Current (mA) |
Output Ripple and Noise | Input Current No load (mA) | Efficiency % | Model Number | Capacitor Load max. |
Single Output | |||||||
24 (9-36) | 3.3 | 1000 | 30m Vp-p | 6 | 82 | TWB3-24S33/MHIA5 | 1050μF |
5 | 600 | 30m Vp-p | 6 | 84.5 | TWB3-24S5/MHIA5 | 750μF | |
12 | 250 | 40m Vp-p | 6 | 87 | TWB3-24S12/MHIA5 | 130μF | |
15 | 200 | 40m Vp-p | 6 | 87 | TWB3-24S15/MHIA5 | 100μF | |
24 | 125 | 50m Vp-p | 6 | 87 | TWB3-24S24/MHIA5 | 39μF | |
48 (18-75) | 3.3 | 1000 | 30m Vp-p | 4 | 81 | TWB3-48S33/MHIA5 | 1050μF |
5 | 600 | 30m Vp-p | 4 | 83 | TWB3-48S5/MHIA5 | 750μF | |
12 | 250 | 40m Vp-p | 4 | 87 | TWB3-48S12/MHIA5 | 130μF | |
15 | 200 | 40m Vp-p | 4 | 87 | TWB3-48S15/MHIA5 | 100μF | |
24 | 125 | 50m Vp-p | 4 | 86 | TWB3-48S24/MHIA5 | 39μF | |
Dual Output | |||||||
24 (9-36) | ±5 | ±300 | 30m Vp-p | 6 | 83 | TWB3-24-5/MHIA5 | ±430μF |
±12 | ±125 | 40m Vp-p | 6 | 87 | TWB3-24-12/MHIA5 | ±75μF | |
±15 | ±100 | 40m Vp-p | 6 | 86 | TWB3-24-15/MHIA5 | ±56μF | |
48 (18-75) | ±5 | ±300 | 30m Vp-p | 4 | 83 | TWB3-48-5/MHIA5 | ±430μF |
±12 | ±125 | 40m Vp-p | 4 | 86 | TWB3-48-12/MHIA5 | ±75μF | |
±15 | ±100 | 40m Vp-p | 4 | 86 | TWB3-48-15/MHIA5 | ±56μF |