Datasheet
NCM6 Series
Isolated 6W Wide Input Single & Dual Output DC/DC Converters
KDC_NCM6C.B01 Page 4 of 19
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APPLICATION NOTES
Output Capacitance and start-up times
The NCM6 series does not require output capacitors to meet datasheet specification. To meet datasheet specification, output capacitance should not exceed:
Part No.
Maximun Load Capacitance (per output) Start-up times
F ms
NCM6D0505C 220 6
NCM6D0512C 100 12
NCM6D0515C 100 18
NCM6S0503C 470 4
NCM6S0505C 220 7
NCM6S0512C 100 12
NCM6S0515C 100 17
NCM6D1205C 220 5
NCM6D1212C 100 12
NCM6D1215C 100 17
NCM6S1203C 470 2
NCM6S1205C 220 6
NCM6S1212C 100 14
NCM6S1215C 100 17
NCM6D4805C 220 10
NCM6D4812C 100 40
NCM6D4815C 100 60
NCM6S4803C 470 2
NCM6S4805C 220 5
NCM6S4812C 100 15
NCM6S4815C 100 20
Control Pin
This provides an OFF function which puts the converter into a low power mode when >3V is applied to the pin. When the control pin is left un-connected or less than 1V the
converter is ON
Minimum Load
The minimum load to meet full datasheet specification is 10% of the full rated load across the specified input voltage range.
Between 0% and 10% output loading, the output voltage will remain within data sheet specification however, output ripple and noise may increase but will still be below
150mV p-p.
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test
voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NCM6 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 5.2kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The NCM6 series has been recognized by Underwriters Laboratory to 250Vrms for Reinforced Insulation.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on
materials, construction and environment. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be
reduced by 20% from specified test voltage.