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Evaluating the
FEATURES
Full featured evaluation board for the
Standalone capability
Simple device measurements, including line and load
regulation, demonstrable with
A single voltage supply
A voltmeter
An ammeter
Load resistors
Easy access to external components
Cascading options to supply the low dropout (LDO)
regulator from either buck regulator
Dedicated enable option for each channel
Mode option to change buck regulators from power save
mode (PSM) to pulse-width modulation (PWM) operation
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
ADP5034
TSSOP Micro Power Management Unit (Micro PMU)
ADP5034
TSSOP
DIGITAL PICTURE OF THE
Evaluation Board User Guide
GENERAL DESCRIPTION
This user guide describes the hardware for the evaluation of the
ADP5034
and includes detailed schematics and PCB layouts.
The
ADP5034
is available in either a 24-lead LFCSP package
or a 28-lead TSSOP package. Note that this user guide refers to
the
ADP5034
TSSOP evaluation board, ADP5034RE-EVALZ.
Refer to
UG-271
The
ADP5034
TSSOP evaluation board has two step-down
regulators with two LDO regulators that enable evaluation of
the ADP5034. The evaluation board is available in an adjustable
voltage option.
Full details on the
sheet available from Analog Devices, Inc., which must be
consulted in conjunction with this evaluation board user guide.
ADP5034
TSSOP EVALUATION BOARD
Figure 1.
Rev. A | Page 1 of 13
for information on the
ADP5034
ADP5034
are provided in the
UG-439
LFCSP.
ADP5034
data
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Table of Contents
Related Manuals for Analog Devices ADP5034
Summary of Contents for Analog Devices ADP5034
-
Page 1: Features
Load resistors regulators with two LDO regulators that enable evaluation of Easy access to external components the ADP5034. The evaluation board is available in an adjustable Cascading options to supply the low dropout (LDO) voltage option. regulator from either buck regulator... -
Page 2: Table Of Contents
Measuring Ground Current .............9 General Description ................. 1 Measuring Ground Current Consumption of LDO Regulators ......................9 Digital Picture of the ADP5034 TSSOP Evaluation Board ..1 Evaluation Board Schematic and Artwork ........10 Revision History ................2 Ordering Information ..............13 Using the Evaluation Board ............. -
Page 3: Using The Evaluation Board
USING THE EVALUATION BOARD POWERING UP THE EVALUATION BOARD (+) load terminal, and the negative (−) load terminal to the evaluation board at PGND. ADP5034 TSSOP evaluation board, ADP5034RE-EVALZ, Input and Output Voltmeters is supplied fully assembled and tested. Before applying power to the evaluation board, follow the procedures in this section. -
Page 4: Measuring Evaluation Board Performance
Figure 4. Measuring Output Voltage Ripple optionally be factory programmed to default values as indicated in Measuring the Switching Waveform of Buck Regulators ADP5034 data sheet. In this event, FB3 must be connected to To observe the switching waveform with an oscilloscope, place the top of the capacitor on VOUT3 by placing a 0 Ω... -
Page 5: Added Figure 7 And Figure 9; Renumbered Sequentially
Evaluation Board User Guide UG-439 Measuring Load Regulation of the Buck Regulator Measuring Line Regulation of the Buck Regulator Test the load regulation by increasing the load at the output and Test the line regulation by increasing the input voltage and examining the change in output voltage. -
Page 6: Added Figure 11
UG-439 Evaluation Board User Guide Measuring Efficiency of the Buck Regulator To ensure that the device is not in dropout mode during this measurement, V must be varied between V nominal + 0.5 V Measure the efficiency, η, by comparing the input power with (or 2.3 V, whichever is greater) and V maximum. - Page 7 Evaluation Board User Guide UG-439 Measuring Dropout Voltage of LDO Regulators Cascading an LDO Regulator from the Buck Regulator Dropout voltage is defined as the input-to-output voltage differen- For certain applications such as analog circuit supplies, the tial when the input voltage is set to the nominal output voltage. LDO regulators are preferred over the buck regulators because One way to measure dropout voltage is to obtain the output voltage of improved noise performance.
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Page 8: Measuring Output Voltage
UG-439 Evaluation Board User Guide MEASURING OUTPUT VOLTAGE Figure 16 shows how the evaluation board can be connected to When measuring the voltages on VOUT2, VOUT3, and VOUT4, a voltage source and a voltmeter for basic output voltage accuracy ensure that the respective channels are enabled, and the volt meters measurements. -
Page 9: Measuring Ground Current
Evaluation Board User Guide UG-439 MEASURING GROUND CURRENT MEASURING GROUND CURRENT CONSUMPTION Figure 17 shows the evaluation board connected to a voltage OF LDO REGULATORS source and an ammeter for ground current measurements. A resistor can be used as the load for the regulator. Ground current measurements can determine how much current Ensure that the resistor has a power rating that is adequate to the internal circuits of the regulator consume while the circuits... -
Page 10: Evaluation Board Schematic And Artwork
UG-439 Evaluation Board User Guide EVALUATION BOARD SCHEMATIC AND ARTWORK Figure 18. Evaluation Board Schematic of the ADP5034 TSSOP Rev. A | Page 10 of 13... -
Page 11: Changes To Figure 16
Evaluation Board User Guide UG-439 Figure 19. Evaluation Board of the ADP5034 TSSOP Figure 20. Top Layer, Recommended Layout for ADP5034 TSSOP Rev. A | Page 11 of 13... -
Page 12: Changes To Table 3
UG-439 Evaluation Board User Guide Figure 21. Bottom Layer, Recommended Layout for ADP5034 TSSOP Rev. A | Page 12 of 13... -
Page 13: Ordering Information
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.
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