UG:118
vicorpower.com
Applications Engineering: 800 927.9474
Page 3
GND
The GND terminal of the Customer Evaluation Board is provided for basic conducted EMI
testing of the HDC, during which it should be connected to earth ground.
Output Voltage Measurement Jack (J103)
This connector is provided to make accurate measurements of the output voltage of the
HDC. Many types of scope probes may be directly connected to this point if the probe is
equipped with a removable plastic sheath. To avoid creating ground loops when making
measurements of the output or input voltage, these measurements should be made
separately.
Input Current Measurement
A current probe can be passed around the +IN lead connected to the HDC.
Note:
The input filter consists of capacitors C01, C02, C03, C04 and common-mode inductors L100 and
L101 on the Customer Evaluation Board. This filter is downstream of input current measurements.
Efficiency Measurement
As the HDC can deliver and consume large currents, the effect of the PCB must be
considered when making an efficiency measurement. Be certain to accurately measure
the voltage directly at the HDC using the appropriate pair of contact points located at the
corners of the HDC.
Recommended Hardware:
Qty
Description
Manufacturer P/N
5
# 10-32 lock washer
Kit # 41062
5
# 10-32 screw
5
# 10-32 hex nut
Kit # 41062 is included with the Customer Evaluation Board.
Thermals
For most lab environments a fan blowing across the evaluation board is recommended.
For additional thermal information regarding the HDC refer to the datasheet or contact
Vicor Applications Engineering for assistance (800) 927-9474.
NOTE:
The HDC Customer Evaluation Board can operate between -20 to 100°C.
Caution
The HDC Customer Evaluation Board can comfortably operate at surface temperatures
which may pose a thermal hazard to the operator. Be careful not to touch any exposed
surface. HDCs may operate at potentially dangerous voltages and pose and energy
hazard. The Customer Evaluation Board is not intended for use in end item equipment.
Ordering Information
The Customer Evaluation Board is specified by replacing the “–00” suffix with “–CB” to
the appropriate HDCC model number.
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