Texas Instruments TPS54331, Руководство пользователя

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1.3 Modifications
These evaluation modules are designed to provide access to the features of the TPS54331. Some modifications
can be made to this module.
1.3.1 Output Voltage Set Point
To change the output voltage of the EVMs, it is necessary to change the value of resistor R6. Changing the value
of R6 can change the output voltage above 0.8 V. The value of R6 for a specific output voltage can be calculated
using
Equation 1 .
R2 10 k
1.221 V
V
O
1.221 V
(1)
Table 1-3 lists the R6 values for some common output voltages. Note that VIN must be in a range so that the
minimum on-time is greater than 150 ns, and the maximum duty cycle is less than 93%. The values given in
Table 1-3 are standard values, not the exact value calculated using Table 1-3 .
Table 1-3. Output Voltages Available
Output Voltage
(V)
R
2
Value (kΩ)
1.8 8.25
2.5 4.75
3.3 3.24
5 1.96
www.ti.com Introduction
SLVU247A – JULY 2008 – REVISED OCTOBER 2021
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TPS54331 Step-Down Converter Evaluation Module User's Guide 3
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