Vicor VI Chip VTM Evaluation Board - Manual (Page 5)

UG:014 vicorpower.com Applications Engineering: 800 927.9474 Page 5
Test Points and Sockets Description
Each test point socket accepts 0.015 – 0.025 inch diameter leads of solid wires and
through-hole components for use with external circuitry and test equipment. All test
points are aligned on the board’s edge for easy access, measurement and external
circuitry connections. Each point is labeled and is accompanied by an additional
adjacent socket.
Reference
Designator
Functional
Name
Functional
Description
TP20,
TP21
+IN,
–IN
Input voltage test points provide kelvin connection to input pins of the
VTM
® . Use these test points for measuring the input voltage of the VTM
to avoid error due to interconnect losses.
H20,
H21
+IN,
–IN
Sockets for +IN and –IN test points. Kelvin connected to the VTM input
pins.
TP17,
TP22
+OUT,
–OUT
Output voltage test points provide kelvin connection to output pins of the
VTM. Use these test points for measuring the output voltage of the VTM
to avoid error due to interconnect losses.
H17,
H22
+OUT,
–OUT
Sockets for +OUT and –OUT test points. Kelvin connected to the VTM
output pins.
TP12 VC
VC test point provides kelvin connection to VC pin of the VTM. Can be
used to apply and measure the VC signal with reference to –IN signal. VC
is used to enable the VTM. Apply 14 V to VC to enable the VTM, when
not using PRM.
H12 VC
Socket for VC test point. Kelvin connected to VC pin of the VTM. Aligned
with –IN socket for placing through hole resistor from VC to –IN.
TP10 PC
PC test point provides kelvin connection to PC pin of the VTM. Can be
used to measure the PC signal with reference to –IN signal. PC can be
used to disable the VTM in the presence of input power. Connecting PC
to –IN will disable the VTM.
H10 PC Socket for PC test point. Kelvin connected to PC pin of the VTM.
TP11 TM
TM test point provides kelvin connection to TM pin of the VTM. Can be
used to measure and monitor the TM signal with reference to –IN signal.
H11 TM Socket for TM test point. Kelvin connected to TM signal of the VTM
TP16
FILTERED
TM
Provides the low noise measurement of TM signal.Output of the TM RC
filter can be measured using this testpoint with reference to –IN.
H15
FILTERED
TM
Socket for TP16 test point.
TP13 –IN
-IN test point provides kelvin connection to –IN pin of the VTM. All signals
on input side of the VTM are measured with reference to –IN signal of the VTM.
H13 –IN Socket for –IN test point.
TP15,
TP14
+S,
–S
Output sense test points provide connection to the output pins of
VTM through local sense resistors. Routed to connector J11 for use
in differential non isolated remote sense circuitry for Remote Sense
operation of VTM and PRM
® .
Table 1.
Test points and
sockets description