Texas Instruments TPS54525 Evaluation Module TPS54525EVM-608 TPS54525EVM-608 Hoja De Datos
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TPS54525EVM-608
R1
VO = 0.765
1+
R 2
æ
ö
´ ç
÷
è
ø
R1
VO = (0.763 + 0.0017
V O)
1+
R2
æ
ö
´
´ ç
÷
è
ø
Modifications
3
Modifications
These evaluation modules are designed to provide access to the features of the TPS54525. Some
modifications can be made to this module.
modifications can be made to this module.
3.1
Output Voltage Setpoint
To change the output voltage of the EVMs, it is necessary to change the value of resistor R1. Changing
the value of R1 can change the output voltage above 0.765 V. The value of R1 for a specific output
voltage can be calculated using
the value of R1 can change the output voltage above 0.765 V. The value of R1 for a specific output
voltage can be calculated using
and
For output voltage from 0.76 V to 2.5 V:
(1)
For output voltage over 2.5 V:
(2)
lists the R1 values for some common output voltages. For higher output voltages of 1.8 V or
above, a feedforward capacitor (C2) may be required to improve phase margin. Pads for this component
(C2) are provided on the printed-circuit board. Note that the values given in
(C2) are provided on the printed-circuit board. Note that the values given in
are standard values
and not the exact value calculated using
.
Table 3. Output Voltages
Output Voltage
R1
R2
C2
L1
C9 + C10 + C11
(V)
(k
Ω
)
(k
Ω
)
(pF)
(µH)
(µF)
1.0
6.81
22.1
1.0 - 1.5
22- 68
1.05
8.25
22.1
1.0 - 1.5
22- 68
1.2
12.7
22.1
1.0 - 1.5
22- 68
1.5
21.5
22.1
1.5
22- 68
1.8
30.1
22.1
5 - 22
1.5
22- 68
2.5
49.9
22.1
5 - 22
2.2
22- 68
3.3
73.2
22.1
5 - 22
2.2
22- 68
5.0
121
22.1
5 - 22
3.3
22- 68
3
SLVU643 – May 2012
TPS54525EVM-608 5.5-A, SWIFT™ Regulator Evaluation Module
Copyright © 2012, Texas Instruments Incorporated