Data Sheet
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DC/DC Converter THM 20WI Series, 20 Watt
The THM-20WI series is a range of medical 20 Watt DC/DC converters in 1.6” x
1.0” plastic package and with ultra wide 4:1 input voltage range. They provide
a reinforced isolation system for 5000 VACrms isolation and a very low leakage
current of less than 2.5 A. The units are approved to IEC/EN/ES 60601-1 3rd
edition for 2 MOPP (Means Of Patient Protection) and come along with an
ISO 14971 risk management file. Design and production conform to the quality
management system ISO 13485. With a high efficiency of up to 89% and highest
grade components the converters can reliably operate in an ambient tempera-
ture range of –40°C up to +80°C. They constitute a reliable solution not only for
medical equipment but also for demanding ranges of application such as trans-
portation, control & measurement or IGBT drivers.
• Ultra wide 4:1 input voltage 20 W DC/DC
converter in a 1.6 1 ” plastic case
• I/O isolation 5000 VACrms rated for
250 VACrms working voltage
• Certification according to IEC/EN/ES
60601-1 3rd edition for 2MOPP
• Risk management process according to
ISO 14971 including risk management file
• Acceptance criteria for electronic
assemblies according to IPC-A-610 Level 3
• Low leakage current < 2.5 A
• Extended operating temperature range
–40°C to 80°C.
• EMC compliance to IEC 60601-1-2 4th
edition and EN55032 class A
• Operating up to 5000m altitude
• 5 year product warranty
Order code Input voltage range Output voltage Output current max. Efficiency typ.
THM 20-2411WI
5.0 VDC 4000 mA 87.0 %
THM 20-2412WI
12 VDC 1670 mA 88.5 %
THM 20-2413WI
9.0 – 36 VDC
15 VDC 1330 mA 88.0 %
THM 20-2415WI (24 VDC nominal)
24 VDC 833 mA 88.0 %
THM 20-2421WI
±5 VDC ±2000 mA 86.0 %
THM 20-2422WI
±12 VDC ±833 mA 88.0 %
THM 20-2423WI
±15 VDC ±667 mA 88.0 %
THM 20-4811WI
5.0 VDC 4000 mA 89.5 %
THM 20-4812WI
12 VDC
1670 mA
88.0 %
THM 20-4813WI
18 – 75 VDC
15 VDC 1330 mA 88.0 %
THM 20-4815WI (48 VDC nominal)
24 VDC 833 mA 88.5 %
THM 20-4821WI
±5 VDC ±2000 mA 86.0 %
THM 20-4822WI
±12 VDC ±833 mA 88.5 %
THM 20-4823WI
±15 VDC ±667 mA 88.0 %
Models
ES 60601-1
C B
Scheme
IEC 60601-1