EVAL-ADP5133Z User Guide
UG-654
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for the ADP5133 Micro PMU
FEATURES
GENERAL DESCRIPTION
Full-featured evaluation board for the ADP5133
Standalone capability
Simple device measurements, including line and load
regulation, demonstrable with
A single voltage supply
A voltage meter
A current meter
Load resistors
Easy access to external components
Dedicated enable option for each channel
Mode option to change bucks from PSM to PWM operation
This user guide describes the hardware for the evaluation
of the ADP5133 and includes detailed schematics and PCB
layouts. The ADP5133 is available in a 16-ball, 2mm × 2mm
WLCSP package.
The ADP5133 evaluation board enables evaluation of the
ADP5133 dual step-down regulator. The evaluation board is
available in standard voltage options.
Full details on the ADP5133 are provided in the ADP5133 data
sheet available from Analog Devices, Inc., which should be
consulted in conjunction with this evaluation board user guide.
11997-001
DIGITAL PICTURE OF THE EVALUATION BOARD
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 12
UG-654
EVAL-ADP5133Z User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
Measuring Output Voltage ...............................................................5
General Description ......................................................................... 1
Measuring Ground Current .............................................................6
Digital Picture of the Evaluation Board ......................................... 1
Evaluation Board Schematics and Artwork ...................................7
Revision History ............................................................................... 2
Ordering Information .................................................................... 10
Using the Evaluation Board............................................................. 3
Bill of Material ............................................................................ 10
Powering Up the Evaluation Board ............................................ 3
Measuring Evaluation Board Performance .................................. 4
REVISION HISTORY
5/14—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
EVAL-ADP5133Z User Guide
UG-654
USING THE EVALUATION BOARD
POWERING UP THE EVALUATION BOARD
The ADP5133 evaluation board is supplied fully assembled and
tested. Before applying power to the evaluation board, follow
the procedures in this section.
Setting the Output Voltage of the Bucks
The buck output voltage is set through external resistor dividers
shown in Figure 2 for BUCK1. Optionally, the output voltage
can be factory programmed to default values as indicated in the
data sheet. In this event, R1 and R2 are not needed, and FB1 can
be left unconnected. In all cases, VOUT1 must be connected to
the output capacitor. VFB1 is 0.5 V.
VOUT1
SW1
L1
1µH
BUCK1
FB1
PGND1
VOUT1
R1
R2
R1
+1
VOUT1 = VFB1
R2
Output Load
Connect an electronic load or resistor to set the load current. If
the load includes a current meter, or if the current is not measured,
connect the load directly to the evaluation board, with the positive
(+) load connected to one of the channels. For example, connect
BUCK1, VOUT1, and the negative (−) load connection to GND1.
If a current meter is used, connect it in series with the load.
Connect the positive (+) current meter terminal to the evaluation
board for BUCK1, VOUT1, the negative (−) current meter
terminal to the positive (+) load terminal, and the negative (−)
load terminal to GND1 on the evaluation board.
C3
10µF
11997-002
VIN1
If the power source does not include a current meter, connect a
current meter in series with the input source voltage. Connect the
positive lead (+) of the power source to the current meter positive
(+) connection, the negative lead (−) of the power source to
GND1 on the evaluation board, and the negative lead (−) of the
current meter to VIN1 on the board. Be aware that current meters
add resistance to the input source and this voltage reduces with
high output currents.
Input and Output Voltmeters
Figure 2. BUCK1 External Output Voltage Setting
The ADP5133 demo boards are supplied with fixed resistors
with values chosen for a target output voltage. Varying the
resistor values of the resistor divider networks varies the output
voltage accordingly.
Measure the input and output voltages with voltmeters. Make
sure that the voltmeters are connected to the appropriate evaluation board terminals and not to the load or power source
themselves.
Table 1. External Resistor Dividers (Fixed)
If the voltmeters are not connected directly to the evaluation
board, the measured voltages will be incorrect due to the
voltage drop across the leads and/or connections between the
evaluation board, the power source, and/or the load.
Resistor Divider
RTOP
RBOT
BUCK1
R1
R2
BUCK2
R3
R4
Enable P2 (EN1) and P4 (EN2)
When the ADP5133 has an input voltage above the minimum
UVLO setting, the ADP5133 BUCK1 is enabled by connecting
EN1 to VIN1. BUCK2 is enabled by connecting EN2 to VIN2.
Jumper P3 (MODE)
A jumper across Pin 1 and Pin 2 of P3 connects the MODE pin
to VIN1, which sets BUCK1 and BUCK2 into forced PWM
operation. Meanwhile, a link across Pin 2 and Pin 3 of P3
connects the MODE pin to GND allows BUCK1 and BUCK2 to
operate in automatic PWM/PSM operation.
Input Power Source
Connect the input voltage measuring voltmeter positive terminal (+) to VIN_1 on the evaluation board, and the negative (−)
terminal to GND3 on the evaluation board.
Connect the output voltage measuring voltmeter positive (+)
terminal to VOUT1 on the evaluation board for measuring the
output voltage of BUCK1 and the negative (−) terminal to GND1
on the evaluation board.
Voltage Input for the Buck Regulators
When the input voltage for BUCK1 and BUCK2 come from
different sources, make sure that Pin 1 and Pin 2 of VIN_12 are
not shorted. Meanwhile when using the same voltage input for
the bucks, place a link across VIN_12.
If the input power source includes a current meter, use that
current meter to monitor the input current. Connect the positive
terminal of the power source to VIN1 on the evaluation board, and
the negative terminal of the power source to GND3.
Rev. 0 | Page 3 of 12
UG-654
EVAL-ADP5133Z User Guide
Turning On the Evaluation Board
Measuring Line Regulation
When the power source and load are connected to the
ADP5133 evaluation board, the board can be powered for
operation. Perform the following steps:
Vary the input voltage and examine the change in the output
voltage.
VIN = 5V
VOUT = 1.8V
LOAD = 500mA
Ensure that the power source voltage is greater than 4.2 V
and less than 5.5 V.
Ensure that the desired channel is enabled and monitor the
output voltage.
2.
If the load is not already enabled, enable the load; check that it
is drawing the proper current, and that the output voltage
maintains voltage regulation.
1.805
VOUT (V)
1.
1.810
MEASURING EVALUATION BOARD PERFORMANCE
1.800
1.795
To observe the output voltage ripple of BUCK1, place an
oscilloscope probe across the output capacitor (C3) with the
probe ground lead at the negative (−) capacitor terminal and
the probe tip at the positive (+) capacitor terminal. Set the
oscilloscope to ac, 20 mV/division, and 2 µs/division time base.
Measuring the Switching Waveform
To observe the switching waveform with an oscilloscope, place
the oscilloscope probe tip at the end of the inductor with the
probe ground at GND. Set the oscilloscope to dc, 2 V/division,
and 2 µs/division time base.
Measuring Load Regulation
Test the load regulation by increasing the load at the output
and looking at the change in output voltage. To minimize
voltage drop, use short low resistance wires, especially for loads
approaching maximum current.
1.790
4.5
4.7
4.9
5.1
5.3
5.5
VIN (V)
11997-004
Measuring Output Voltage Ripple on the Buck Regulator
Figure 4. Line Regulation
Measuring Efficiency
Measure the efficiency, η, by comparing the input power with
the output power.
η=
VOUT × I OUT
V IN × I IN
Measure the input and output voltages as close as possible to the
input and output capacitors to reduce the effect of IR drops.
100
90
PSM
80
70
EFFICIENCY (%)
3.325
VIN = 5V
VOUT = 3.3V
3.320
3.315
60
50
40
PWM
VIN = 5V
VOUT = 3.3V
20
3.310
3.305
0
1
10
100
IOUT (mA)
3.300
1000
11997-005
10
Figure 5. Buck Efficiency
3.295
0
0.1
0.2
0.3
0.4
IOUT (A)
0.5
Figure 3. Buck Load Regulation
0.6
0.7
11997-003
VOUT (V)
30
Measuring Inductor Current
Measure the inductor current by removing one end of the
inductor from its pad and connecting a current loop in series.
A current probe can be connected onto this wire.
Rev. 0 | Page 4 of 12
EVAL-ADP5133Z User Guide
UG-654
MEASURING OUTPUT VOLTAGE
Figure 6 shows how the evaluation board can be connected to a
voltage supply and a voltmeter for basic output voltage accuracy
measurements. A resistor can be used as the load for the
regulator. Ensure that the resistor has a power rating adequate
to handle the power expected to be dissipated across it. An
electronic load can also be used as an alternative. Ensure that
the voltage supply can supply enough current for the expected
load levels.
VOLTMETER
1.1999V
VOLTAGE SUPPLY
–
–
11997-006
+
+
Figure 6. Output Voltage Measurement
Rev. 0 | Page 5 of 12
UG-654
EVAL-ADP5133Z User Guide
MEASURING GROUND CURRENT
Figure 7 shows the evaluation board connected to a voltage
supply and a current meter for ground current measurements. A
resistor can be used as the load for the regulator. Ensure that the
resistor has a power rating that is adequate to handle the power
expected to be dissipated across it. An electronic load can be used
as an alternative. Ensure that the voltage source used can supply
enough current for the expected load levels.
CURRENT METER
0.00112
–
+
VOLTAGE SUPPLY
–
11997-007
+
Figure 7. Ground Current Measurement
Rev. 0 | Page 6 of 12
EVAL-ADP5133Z User Guide
UG-654
11997-008
EVALUATION BOARD SCHEMATICS AND ARTWORK
11997-009
Figure 8. ADP5133 Evaluation Board Schematic
Figure 9. Top Layer, Recommended Layout
Rev. 0 | Page 7 of 12
EVAL-ADP5133Z User Guide
11997-010
UG-654
11997-011
Figure 10. Second Layer, Recommended Layout
Figure 11. Third Layer, Recommended Layout
Rev. 0 | Page 8 of 12
UG-654
11997-012
EVAL-ADP5133Z User Guide
Figure 12. Bottom Layer, Recommended Layout
Rev. 0 | Page 9 of 12
UG-654
EVAL-ADP5133Z User Guide
ORDERING INFORMATION
BILL OF MATERIALS
Table 2.
Qty
1
2
2
2
1
1
1
1
Reference Designator
U1
C1, C2
C3, C4
L1, L2
R1
R2
R3
R4
Description
ADP5133 micro PMU, 2 regulators
Capacitor, MLCC, 4.7 μF, 6.3 V, 0402, X5R
Capacitor, MLCC, 10.0 μF, 6.3 V, 0603, X5R
Inductor, 1.0 μH, 1.4 A, 85 mΩ
Resistor, 0402, 140 kΩ
Resistor, 0402, 100 kΩ
Resistor, 0402, 280 kΩ
Resistor, 0402, 49.9 kΩ
Rev. 0 | Page 10 of 12
Manufacturer
Analog Devices
Murata
Murata
Murata
Panasonic
Panasonic
Vishay
Panasonic
Part Number
ADP5133
GRM155R60J475ME87D
GRM188R60J106ME47D
LQM2MPN1R0NG0
ERJ-2RKF1403X
ERJ-2RKF1003X
CRCW0402280KFKED
ERJ-2RKF4992X
EVAL-ADP5133Z User Guide
UG-654
NOTES
Rev. 0 | Page 11 of 12
UG-654
EVAL-ADP5133Z User Guide
NOTES
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
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. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation 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. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
©2014 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG11997-0-5/14(0)
Rev. 0 | Page 12 of 12
工商网监
湘ICP备2023018690号
