TDK-Lambda UK
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Technical Centre
DC-DC Power Supplies FAQ
Select question from the list below or return to faq categories.
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What are the main differences between Isolated & Non-Isolated DC-DC Converters?
Isolated converters provide an input–output electrical barrier for safety and polarity flexibility; non‑isolated POL converters are simpler but lack separation—learn wiring scenarios, chassis‑reference differences, and failure risks.
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Can I Operate my AC-DC Power Supply with a DC Input?
...The answer is yes, sometimes.
Many standard AC-DC switched mode power supplies (most of TDK-Lambda's products) specify a high voltage DC input range in addition to the more common AC input range of 90-264VAC. We receive many questions about how and where to connect the DC input to an AC-DC supply that is specified to operate off of DC as well as an AC inputs.
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