Safety Considerations - TDK Dualeta iQA Series Datasheet

Advance Data Sheet: Dualeta™ iQA Series – Dual Quarter Brick

Safety Considerations

For safety agency approval of the system in which the DC-DC power module is installed, the
power module must be installed in compliance with the creepage and clearance requirements of
the safety agency. The isolation is basic insulation. For applications requiring basic insulation,
care must be taken to maintain minimum creepage and clearance distances when routing traces
near the power module.
As part of the production process, the power modules are hi-pot tested from primary and
secondary at a test voltage of 1500Vdc.
To preserve maximum flexibility, the power modules are not internally fused. An external input
line normal blow fuse with a maximum value of 15A is required by safety agencies. A lower value
fuse can be selected based upon the maximum dc input current and maximum inrush energy of
the power module.
When the supply to the DC-DC converter is less than 60Vdc, the power module meets all of the
requirements for SELV. If the input voltage is a hazardous voltage that exceeds 60Vdc, the
output can be considered SELV only if the following conditions are met:
1) The input source is isolated from the ac mains by reinforced insulation.
2) The input terminal pins are not accessible.
3) One pole of the input and one pole of the output are grounded or both are kept floating.
4) Single fault testing is performed on the end system to ensure that under a single fault,
hazardous voltages do not appear at the module output.
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©2004 TDK Innoveta® Inc.
iQAFullDatasheet080505_2.doc 8/3/2006 Revision 2.0
Information furnished by TDK Innoveta is believed to be accurate and reliable. However, TDK Innoveta assumes no
responsibility for its use, nor for any infringement of patents or other rights of third parties, which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of TDK Innoveta. TDK Innoveta
components are not designed to be used in applications, such as life support systems, wherein failure or malfunction
could result in injury or death. All sales are subject to TDK Innoveta's Terms and Conditions of Sale, which are available
upon request. Specifications are subject to change without notice.
is a trademark or registered trademark of TDK Corporation.
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