INSTRUCTION MANUAL
PFE500F
Series
TDK-Lambda
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Before Concluding Power Module Damage
Verify following items before concluding power module damage.
1) No output voltage
- Is specified input voltage applied?
- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?
- Is there no abnormality with the output load?
- Is the actual baseplate temperature within the specified operating temperature of this module?
- Are the ON/OFF control terminals (+ON/OFF, -ON/OFF) correctly connected?
2) Output voltage is high
- Are the remote sensing terminals (+S, -S) correctly connected?
- Is the measurement done at the sensing points?
- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?
3) Output voltage is low
- Is specified input voltage applied?
- Are the remote sensing terminals (+S, -S) correctly connected?
- Is the measurement done at the sensing points?
- During output voltage adjustment, is the fixed resistor or variable resistor setting correct?
- Is there no abnormality with the output load?
4) Load regulation or line regulation is large
- Is specified input voltage applied?
- Are the input or output terminals firmly connected?
- Is the measurement done at the sensing points?
- Are the input and output wires too thin?
5) Large output ripple
- Is the measurement done according to methods described Application Notes or is it an equivalent method?
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CE MARKING / UKCA MARKING
CE MARKING
CE Marking, when applied to a product or packing material for a product covered by this handbook,
indicates compliance with the Low Voltage Directive and RoHS Directive.
UKCA MARKING
UKCA Marking, when applied to a product or packing material for a product covered by this handbook,
indicates compliance with the Electrical Equipment (Safety) Regulations and Restriction of the Use of
Certain Hazardous Substances in Electrical & Electronic Equipment Regulations.
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