MTWA4 Medical DC/DC Converters

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            MTWA4 Medical DC/DC Converters
                    Daburn's MTWA4 medical DC/DC converters provide 5000 VAC input-to-output isolation and a low leakage current of 2 µA
    

Image of Daburn's MTWA4 Medical DC/DC Converters Daburn’s compact MTWA4 series low-power DC/DC 3.5 watt converters feature a wide 2:1 input and meet key standards for medical devices. Target applications include, but are not limited to, x-ray, blood analysis, vision test, and tomography equipment.

Power products in medical devices can potentially pose a shock risk to patients, and harmful leakage currents can contact an operator or patient in a weakened state. IEC 60601-1-compliant products are designed with patient protection in mind and limit their leakage current to a prescribed level. The MTWA4 DC/DC converter provides 2xMOPP per IEC 60601-1 safety standards, 5000 V_AC input-to-output isolation, and a low leakage current of 2 µA

Available in miniature DIP16 (0.95" x 0.57" x 0.41") and SMD16 (0.95" x 0.57" x 0.40") packages, MTWA4 DC/DC converters are particularly suitable for use in low-power portable devices. The converter covers input ranges of 4.5 V_DC to 12 V_DC, 9 V_DC to 18 V_DC, 18 V_DC to 36 V_DC, and 36 V_DC to 75 V_DC. Additional features include efficiency as high as 82 percent; overvoltage, short circuit, and undervoltage protection; and RoHS compliance to 2011/65/EU.

Features

Isolation voltage:

1 minute, reinforced insulation for 250 V_AC working voltage, 5000 V_AC min.

Isolation capacitance: 16 pF typ., 20 pF max.
Leakage current: 240 V_AC, 60 Hz, 2 µA max.
Switching frequency: 100 kHz min.
Clearance/creepage: 8 mm min.
Operating ambient temperature

With derating: -40°C min. +105°C max.

Maximum case temperature: +105°C max.
Storage temperature range: -55°C min., +125°C max.
Operating altitude: 5000 m max.
Thermal shock: MIL-STD-810-F
Shock: MIL-STD-810-F
Vibration: MIL-STD-810-F
Relative humidity: 5% RH to 95% RH

Lead-free reflow solder process:

SMD type only: IPC J-STD-020E
SMD type only: IPC J-STD-033C, Level 2

Design meet safety standard: EN/IEC/ANSI/AAMI ES60601-1, UL:E360199, EN/IEC/UL 60950-1, 62368-1, UL:E193009, and CB:UL(Demko)
EMI: EN55011, EN55032, and FCC Part 18, with external components, Class A, Class B
ESD: EN61000-4-2, air ±15 kV and contact ±8 kV, Perf. Criteria A
Radiated immunity: EN61000-4-3, 10 V/m, Perf. Criteria A
Fast Transient: EN61000-4-4, ±2 kV, Perf. Criteria A
Surge: EN61000-4-5, ±1 kV, Perf. Criteria A
Conducted immunity: EN61000-4-6, 10 V_RMS, Perf. Criteria A
Power frequency magnetic field: EN61000-4-8, 100 A/m continuous; 1000 A/m 1 second, Perf. Criteria A