Datasheet

Modifications
1-5
Introduction
1.3.3 Input Filter
An onboard electrolytic input capacitor is included at C1. Depending on the
application, this capacitor can be removed.
1.3.4 Split Input Voltage Rails
The TPS54010 is provided with two input voltage rails, PVIN and VIN. In
normal operation, the two input voltages would be applied per Table 1−1 at the
J1 and J2 connectors. It is possible to operate the EVM from a single 3−V to
3.5−V source by applying the voltage at the J1 connector and installing a
jumper on JP1.
1.3.5 Synchronization
The TPS54010EVM-067 is synchronized to an external clock frequency. The
synchronization frequency range is 330 kHz to 700 kHz. Drive a
synchronization signal into the SYNC pin by connecting to pin 2 of J4 and use
R4 to set the free-running frequency to 80% of the synchronization signal.
1.3.6 Extending Slow−Start Time
The slow−start time (T
SS
)can be extended by changing the value of C5. The
value for C5 for a desired slow−start time is given by Equation 1−4.
Equation 1−4.
C5(mF) + T
SS
(ms)
5 mA
1.2 V
1.3.7 Output Filter
A location is provided to add an additional output filter capacitor (C12). The
pads are sized for a 1210 component.