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TPS23750EVM-107 Fiches technique(PDF) 9 Page - Texas Instruments

No de pièce TPS23750EVM-107
Description  TPS23750 Buck-Converter Evaluation Board ??HPA107
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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TPS23750EVM-107 Fiches technique(HTML) 9 Page - Texas Instruments

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HPA107
+
J1
J3
EthernetCable
J2
J4
+
V
OUT
PSE
or
PowerSupply
R
LOAD
Optional
PowerSource
Data
toPhy
+
AUX
www.ti.com
Using the EVM
4
Using the EVM
4.1
Setup
Figure 5 shows a typical EVM setup. The user is encouraged to read the TPS23750 data sheet before
using the EVM.
Figure 5. Typical Setup
4.2
Interface
Table 2 describes the EVM interface.
Table 3. EVM I/O Interfaces
Reference Designator
Description
J1
An Ethernet cable connects this port to the power-sourcing equipment (PSE). This port carries both
data and power.
J2
This port carries only data. Do not apply power to this port.
J3
This terminal block accepts auxiliary power from a source like a wall adapter.
J4
Output voltage
D6
This LED is lit if the DC/DC converter output is on.
D7
This LED is lit if the PD FET switch is on.
4.3
Making Measurements
Stray magnetic fields from inductor L2 can couple noise into measurements. This noise may be noticeable
when measuring a low-level signal like output ripple voltage. Keep the ground lead of the oscilloscope
probe short and away from L2 to reduce the amount of noise pick-up.
Ground loops can be created if test equipment is connected to the EVM. Avoid ground loops by floating
the test equipment and/or the power supply to the EVM.
4.4
EVM Operation
The TPS23750 data sheet describes the electrical operation and function of the various components in the
buck converter powered device. The circuit provided in the data sheet is similar to the circuit in this EVM.
9
SLVU136A – July 2005 – Revised January 2011
TPS23750 Buck-Converter Evaluation Board – HPA107
Submit Documentation Feedback
© 2005–2011, Texas Instruments Incorporated


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