Datasheet

Buck/Boost Converter PICtail™ Plus Daughter Board User’s Guide

2.2.10 Test Points

The Daughter Board provides the various test points of the PWM signals, feedback

signals and input and output voltages for the user application. Table 2-5 lists the PWM

test points that can be used to check the PWM gate pulse for all three power stages.

TABLE 2-5: PWM TEST POINTS

Table 2-6 lists the feedback signal test points that can be used to check the feedback

signal waveforms and values.

TABLE 2-6: FEEDBACK SIGNAL TEST POINTS

Table 2-7 shows the power test points that can be used to verify the input and output

voltages.

TABLE 2-7: POWER TEST POINTS

Test Points Description

PWM1H Buck MOSFET gate drive of Buck 1 converter stage

PWM1L Synchronous MOSFET gate drive of Buck 1 converter stage

PWM2H Buck MOSFET gate drive of Buck 2 converter stage

PWM2L Synchronous MOSFET gate drive of Buck 2 converter stage

PWM3H Boost MOSFET gate drive for Boost converter stage

Test Points Description

Current Sense1 Current feedback signal for Buck 1 converter stage

Current Sense2 Current feedback signal for Buck 2 converter stage

Current Sense3 Current feedback signal for Boost converter stage

Test Points Description

V+ Input Voltage Test Point

Buck1+ VOUT1 voltage test point

Buck2+ VOUT2 voltage test point

Boost+ VOUT3 voltage test point

GND Ground potential test point