OUT
R1 0.8 V
R2 =
V
-0.8V
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Modifications
3
Modifications
These evaluation modules are designed to provide access to the features of the TPS560200. Some
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
Equation 1
.
(1)
Table 3
lists the R1 values for some common output voltages. For higher output voltages of 1.8 V or
above, a feedforward capacitor (C3) may be required to improve phase margin. Pads for this component
(C3) are provided on the printed-circuit board. Note that the values given in
Table 3
are standard values
and not the exact value calculated using
Table 3
.
Table 3. Output Voltages
L1
Output Voltage
R1
R2
C3
C4 + C5
(µH)
(V)
(k
Ω
)
(k
Ω
)
(pF)
(µF)
Min
Typ
Max
1.0
6.19
20.0
10
10 + 10
1.05
6.19
20.0
10
10 + 10
1.2
10.0
20.0
10
10 + 10
1.5
17.4
20.0
10
10 + 10
1.8
24.9
20.0
optional
10
10 + 10
2.5
42.2
20.0
optional
10
10 + 10
3.3
61.9
20.0
optional
10
10 + 10
5.0
105
20.0
optional
10
10 + 10
3
SLVU954 – September 2013
TPS560200EVM-537 0.5-A, Single Channel Regulator Evaluation Module
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