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UG-439

Evaluation Board User Guide

Rev. A | Page 12 of 13

Figure 21. Bottom Layer, Recommended Layout for

ADP5034

TSSOP

10895-

018

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Summary of Contents for ADP5034

Page 1: ...ion to change buck regulators from power save mode PSM to pulse width modulation PWM operation GENERAL DESCRIPTION This user guide describes the hardware for the evaluation of the ADP5034 and includes...

Page 2: ...Materials 13 Related Links 13 REVISION HISTORY 4 2017 Rev 0 to Rev A Changes to General Description Section and Figure 1 1 Changes to Enable Section Table 1 and Turning on the Evaluation Board Section...

Page 3: ...For example connect the Buck 1 output VOUT1 and the negative load connection to PGND If an ammeter is used connect it in series with the load Connect the positive ammeter terminal to the evaluation bo...

Page 4: ...base with the bandwidth set to 20 MHz to prevent noise from interfering with the measurements It is also recommended to shorten the ground loop of the oscilloscope probe to minimize coupling One way...

Page 5: ...xamining the change in the output voltage The buck regulator line regulation plots for VOUT2 3 3 V and VOUT2 1 8 V are shown in Figure 9 and Figure 10 respectively Figure 9 Buck Regulator Line Regulat...

Page 6: ...and VIN maximum For example a fixed 3 3 V output needs VIN to be varied between 3 8 V and 5 5 V This measurement can be repeated under different load conditions Figure 13 shows the typical line regul...

Page 7: ...t supply voltage may need to be adjusted to account for IR drops especially if large load currents are used Cascading an LDO Regulator from the Buck Regulator For certain applications such as analog c...

Page 8: ...EN2 JEN3 and JEN4 are connected to ground disabling the other channels When measuring the voltages on VOUT2 VOUT3 and VOUT4 ensure that the respective channels are enabled and the volt meters are conn...

Page 9: ...nt when supplying its largest load level 300 mA When the device is disabled the ground current drops to less than 1 A Figure 17 shows the evaluation board connected to a voltage source and an ammeter...

Page 10: ...T1 RB1 RB3 RT3 RT4 RB4 1 2 1 JV3V1 CIN2A 2 1 JVIN4 2 1 JVIN3 3 2 1 JEN1 3 2 1 JMODE 1 VOUT2 1 1 VOUT1S 1 VOUT1 1 GND1 1 GND 1 VOUT3 1 VOUT3S 1 VOUT4S 1 3 14 15 2 7 8 21 20 PAD 25 18 11 10 19 13 16 5 2...

Page 11: ...Evaluation Board User Guide UG 439 Rev A Page 11 of 13 Figure 19 Evaluation Board of the ADP5034 TSSOP Figure 20 Top Layer Recommended Layout for ADP5034 TSSOP 10895 016 10895 017...

Page 12: ...UG 439 Evaluation Board User Guide Rev A Page 12 of 13 Figure 21 Bottom Layer Recommended Layout for ADP5034 TSSOP 10895 018...

Page 13: ...Board and ii permit any Third Party to access the Evaluation Board As used herein the term Third Party includes any entity other than ADI Customer their employees affiliates and in house consultants T...

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