Polytron TWA3/MHIA5 Series DC-DC Converters, 3 Watt Single and Dual Output 2:1 Wide Input Range for Medical Applications 1.25" x 0.80" x 0.40"

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High efficiency with a miniature DIP package

Our 3 watt 2:1 wide input TWA3/MHIA DC-DC medical converter features a clearance and creepage distance of 8 mm/2 MOPP, a built-in EMI class A filter and a miniature DIP package. This converter also features reinforced insulation and operating temperatures between -40 and 105°C with derating.

FEATURES:
• 2:1 Wide Input Voltage Range • Clearance & Creepage Distance :8.0mm/2MOPP • 5000VAC Input to Output 2MOPP Isolation • Built-In EMI Class A Filter • Dimensions: 1.25” x 0.80” x 0.40”	• 2μA Patient Leakage Current • Safety Meets UL, CE & ANSI/AAMI ES60601-1,EN60601-1 and IEC60601-1 • CE Mark • RoHS Compliant to 2011/65/EU	• Operating Temperature Range: -40º- +105º C(with derating) • Miniature DIP Package • High Efficiency: To 89% • Reinforced Insulation

TWA3/MHIA5 Series Specification Sheet PDF

Model Number	Input Voltage Range (Vdc)	Output Voltage (Vdc)	Output Current at Full Load (mA)	Input Current at No Load (mA)	Efficiency %	Maximum Capacitor Load µF
Single Output
TWA3-5S33/MHIA5	4.5 - 9	3.3	1000	10	81	1050
TWA3-5S5/MHIA5		5	600	10	84.5	750
TWA3-5S12/MHIA5		12	250	15	85.5	130
TWA3-5S15/MHIA5		15	200	15	87.5	100
TWA3-5S24/MHIA5		24	125	20	85.5	39
TWA3-12S33/MHIA5	9 - 18	3.3	1000	10	82	1050
TWA3-12S5/MHIA5		5	600	10	84.5	750
TWA3-12S12/MHIA5		12	250	10	87	130
TWA3-12S15/MHIA5		15	200	10	87	100
TWA3-12S24/MHIA5		24	125	10	87	39
TWA3-24S33/MHIA5	18 - 36	3.3	1000	6	82	1050
TWA3-24S5/MHIA5		5	600	6	84.5	750
TWA3-24S12/MHIA5		12	250	6	87	130
TWA3-24S15/MHIA5		15	200	6	87	100
TWA3-24S24/MHIA5		24	125	6	87	39
TWA3-48S33/MHIA5	36 - 72	3.3	1000	4	81	1050
TWA3-48S5/MHIA5		5	600	4	84	750
TWA3-48S12/MHIA5		12	250	4	87	130
TWA3-48S15/MHIA5		15	200	4	86.5	100
TWA3-48S24/MHIA5		24	125	4	86.5	39
Dual Output
TWA3-5-5/MHIA5	4.5 - 9	±5	±300	25	83	±430
TWA3-5-12/MHIA5		±12	±125	25	86	±75
TWA3-5-15/MHIA5		±15	±100	25	86	±56
TWA3-12-5/MHIA5	9 - 18	±5	±300	10	83.5	±430
TWA3-12-12/MHIA5		±12	±125	10	87.5	±75
TWA3-12-15/MHIA5		±15	±100	10	86.5	±56
TWA3-24-5/MHIA5	18 - 36	±5	±300	6	83	±430
TWA3-24-12/MHIA5		±12	±125	6	87	±75
TWA3-24-15/MHIA5		±15	±100	6	86	±56
TWA3-48-5/MHIA5	36 - 72	±5	±300	4	83	±430
TWA3-48-12/MHIA5		±12	±125	4	86	±75
TWA3-48-15/MHIA5		±15	±100	4	86	±56

Input and Output Specifications:

INPUT

Operating input voltage range
- 12 Vdc nominal input: 9 - 18 Vdc
- 24 Vdc nominal input: 18 - 36 Vdc
- 48 Vdc nominal input: 36 - 72 Vdc
Start up voltage
- 5 Vdc nominal input: 4.5 Vdc
- 12 Vdc nominal input: 9 Vdc
- 24 Vdc nominal input: 18 Vdc
- 48 Vdc nominal input: 36 Vdc
Shutdown voltage
- 5 Vdc nominal input: 4 Vdc
- 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, 3 sec. max.
- 5 Vdc nominal input: 16 Vdc
- 12 Vdc nominal input: 25 Vdc
- 24 Vdc nominal input: 50 Vdc
- 48 Vdc nominal input: 100 Vdc
Input filter: Pi type
Reflected ripple current: 20 mAp-p
Remote On/Off: referred to -INPUT pin
- DC-DC ON: Open or 0 - 1.2 Vdc
- DC-DC OFF: 2.2 - 12 Vdc
- Input current of remote control pin: -0.5 - 1 mA
- Remote off input current: 2.5 mA

OUTPUT

Output power: 3 watts
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%
Cross regulation
- Asymmetrical load 25%/100%FL, dual: ±5%
Ripple and noise, measured by 20 MHz bandwidth
- With a 10μ/25V X7R MLCC
  - 3.3 and 4 Vout: 30 mVp-p
- With a 10μ/25V X7R MLCC
  - 12 and 15 Vout: 40 mVp-p
- With a 4.7μF/50V X7R MLCC
  - 24 Vout: 50 mVp-p
Temperature Coefficient (at FL): 0.02%/°C max.
Transient response recovery time
- 25% load step change: 250µs
Over voltage protection, continuous clamp
- 3.3 Vout: 3.7 - 5.4 Vdc
- 5 Vout: 5.6 - 7 Vdc
- 12 Vout: 13.5 - 19.6 Vdc
- 15 Vout: 18.3 - 22 Vdc
- 24 Vout: 29.1 - 32.5 Vdc
Over load protection: 150%
Short circuit protection: continuous, automatic recovery

More Specifications:

GENERAL

Efficiency: 81 - 87.5%
Isolation voltage
- Input to output: 5000 Vac
Leakage current, 240 Vac, 60 Hz: 2 µA
Isolation capacitance: 12 - 17 pF
Switching frequency: 300 kHz

ENVIRONMENTAL

Operating ambient temperature
- Without derating: -40 to 94°C
- With derating: 77 to 105°C
Storage temperature range: -55 to 125°C
Thermal impedance
- Natural convection (20LFM): 18°C/W
Thermal shock: MIL-STD-810F
Vibration: MIL-STD-810F
Relative humidity: 5 to 95%

PHYSICAL

Clearance/creepage: 8mm
Design meets safety standards: ANSI/AAMI, ES60601-1, IEC60601-1, EN60601-1
Case material: Nickel coated copper
Base material: Non-conductive, black, plastic
Potting material: silicone (UL94-V0)
Weight: 14 g (0.48 oz)
Dimensions: 1.25" x 0.80" x 0.40" (31.8 x 20.3 x 10.2 mm)
MTBF: 8.638 x 10^5 hours, MIL-HDBK-217F Ta25°C. full load (G/B, controlled environment)

EMC CHARACTERISTICS

EMI
- Class A and B: EN55011, EN55022 and FCC part 18
ESD: EN6100-4-2, 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

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