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STD Datasheet(Fiches technique) 4 Page - Texas Instruments

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Description  TPS62090EVM-063 Evaluation Module
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STD Datasheet(HTML) 4 Page - Texas Instruments

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Time - 200 ns/div
ramped up over 3 ms. Figure 6 is a hot plug power up. The output ramp rate is the same in both
figures due to the controlled soft-start. The output can be programmed to track another voltage by use
of the soft-start pin. See the data sheet for more details.
8. Move CH1 to JP1-2 (Enable pin), and set JP1 shunt to off. Arm the scope and remove JP1 shunt.
Figure 7 shows the power-up of the converter via the enable pin.
9. Set the scope trigger to negative, arm the oscilloscope, and apply a shunt on JP1-OFF. See Figure 8
for the power-down sequence.
10. With an understanding of the basic functions of the EVM, users may want to integrate the EVM into
their system using short, twisted wires, to minimize connection impedances.
4.5V input, 1.8V output, 1.4MHz Switching; CH1: Input Ripple, CH2: Switching Node, CH3: Output Ripple
Figure 2. Typical Switching Waveforms
TPS62090EVM-063 Evaluation Module
SLVU670A – March 2012 – Revised May 2012
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Copyright © 2012, Texas Instruments Incorporated

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