Texas Instruments Evaluation Module for TPS54228 TPS54228EVM-686 TPS54228EVM-686 数据表
产品代码
TPS54228EVM-686
Test Setup and Results
4.1
Input/Output Connections
The TPS54228EVM-686 is provided with input/output connectors and test points as shown in
. A
power supply capable of supplying 2 A must be connected to J1 through a pair of 20 AWG wires. The load
must be connected to J2 through a pair of 20 AWG wires. The maximum load current capability is 2 A.
Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor
the input voltages (V
must be connected to J2 through a pair of 20 AWG wires. The maximum load current capability is 2 A.
Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor
the input voltages (V
IN
) with TP2 providing a convenient ground reference. TP8 is used to monitor the
output voltage with TP9 as the ground reference.
Table 4. Connection and Test Points
Reference Designator
Function
J1
V
IN
(see
for V
IN
range)
J2
V
OUT
, 1.05 V at 3 A maximum.
JP1
EN control. Connect EN to OFF to disable, connect EN to ON to enable.
TP1
V
IN
test point at V
IN
connector.
TP2
GND test point at V
IN
.
TP3
EN test point.
TP4
Loop response measurement test point.
TP5
VREG5 test point.
TP6
Switch node test point.
TP7
Analog ground test point.
TP8
Output voltage test point.
TP9
Ground test point at output connector.
4.2
Start-Up Procedure
1. Ensure that the jumper at JP1 (Enable control) is set from EN to OFF.
2. Apply appropriate V
2. Apply appropriate V
IN
voltage to VIN and PGND terminals at J1.
3. Move the jumper at JP1 (Enable control) to cover EN and ON. The EVM enables the output voltage.
4
TPS54228EVM-686, 2-A, SWIFT
™
Regulator Evaluation Module
SLVU452
–
May 2011
Copyright
©
2011, Texas Instruments Incorporated