ZSPM4022 / ZSPM4023
Evaluation Board Description
Kit
Restrictions:
IDT shall not be liable for any damages arising out of defects resulting from (i) delivered hardware (ii) non-
observance of instructions contained in this manual, or (iii) misuse, abuse, use under abnormal conditions, or
alteration by anyone other than IDT. To the extent permitted by law, IDT hereby expressly disclaims and User
expressly waives any and all warranties, whether express, implied, or statutory, including, without limitation,
implied warranties of merchantability and of fitness for a particular purpose, statutory warranty of non-
infringement, and any other warranty that may arise by reason of usage of trade, custom, or course of dealing.
Contents
1
2
3
4
Kit Contents ...................................................................................................................................................... 2
Introduction ....................................................................................................................................................... 2
ZSPM4023/ZSPM4022 Evaluation Kit Board ................................................................................................... 3
Setup ................................................................................................................................................................ 4
4.1. Board Connections .................................................................................................................................... 4
4.2. Test Points ................................................................................................................................................. 5
Board Options ................................................................................................................................................... 5
5.1. Custom Output Voltage Selection ............................................................................................................. 5
Evaluation Board Schematic and Layout ......................................................................................................... 6
6.1. Evaluation Board Layout............................................................................................................................ 7
6.2. ZSPM4023/ZSPM4022 Evaluation Board Bill of Materials ........................................................................ 9
Ordering Information....................................................................................................................................... 11
Related Documents ........................................................................................................................................ 11
Document Revision History ............................................................................................................................ 12
5
6
7
8
9
List of Figures
Figure 3.1
Figure 6.1
Overview of the Evaluation Kit Board – Example using the ZSPM4023-12 .......................................... 3
Schematic for the Evaluation Board Revision 3.0 ................................................................................. 6
List of Tables
Table 2.1
Table 4.1
Table 4.2
Table 4.3
Table 6.1
Kit Variations .......................................................................................................................................... 2
Evaluation Board Connectors ................................................................................................................ 4
VOUT J3 Jumper Selection ................................................................................................................... 4
Evaluation Board Test Points ................................................................................................................ 5
Evaluation Board Bill of Materials .......................................................................................................... 9
© 2016 Integrated Device Technology, Inc.
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April 14, 2016
ZSPM4022 / ZSPM4023 Evaluation Board Description
1
•
•
Kit Contents
ZSPM4023/ZSPM4022 Evaluation Board
Kit User Guide
2
Introduction
The ZSPM4023-KIT/ZSPM4022-KIT Evaluation Kit is a complete, self-contained system for measuring the
performance and operating characteristics of the ZSPM4023/ZSPM4022 family of synchronous DC/DC buck regulator
ICs; i.e., the device under test (DUT). The board contains various jumpers and test points to facilitate evaluation of all
basic functions of the DUT. For each product family, the kit is available in three versions that are adapted for the three
output current variations of the product: 6, 9, and 12 amps. The Evaluation Board and the components on it are the
same for all versions, except for the DUT. This manual uses the ZSPM4023-12 version for examples, but the content
applies to all six products, except as noted.
The kit can be factory-configured with either the ZSPM4023 DC-DC regulator, which operates at a V
IN
of 4.5V to 28V,
or with the ZSPM4022 DC-DC regulator, which operates at a V
IN
of 4.5V to 19V.
Note: Upon receipt of the kit, verify that the markings on the product identification label on the Evaluation Board (see
Figure 3.1) match the product with the correct current and input supply range requirements for the user’s application.
Table 2.1
Kit Variations
Kit
ZSPM4023-12-KIT
ZSPM4023-09-KIT
ZSPM4023-06-KIT
ZSPM4022-12-KIT
ZSPM4022-09-KIT
ZSPM4022-06-KIT
Product (DUT)
ZSPM4023-12
ZSPM4023-09
ZSPM4023-06
ZSPM4022-12
ZSPM4022-09
ZSPM4022-06
Input Supply
Range
to be Regulated
4.5V to 28V
4.5V to 28V
4.5V to 28V
4.5V to 19V
4.5V to 19V
4.5V to 19V
Regulated Output
Current
12A
9A
6A
12A
9A
6A
Output Voltage
Adjustment Range
(Typical Accuracy
±1%)
0.8V to 5.5V
0.8V to 5.5V
0.8V to 5.5V
0.8V to 5.5V
0.8V to 5.5V
0.8V to 5.5V
All product variations operate at a switching frequency of 600 KHz. The switching frequency remains fairly constant
regardless of changes in input voltage and output load.
The rapid-control architecture of the ZSPM4023 and ZSPM4022 allows a quick transient response while reducing the
output capacitance and making a high input/output voltage ratio possible. Both products also utilize an adaptive t
ON
ripple control architecture. An undervoltage lockout feature is provided to ensure proper operation under power-sag
conditions. An internal soft-start feature reduces the inrush current. A foldback current limit and “hiccup” mode short-
circuit protection, as well as thermal shutdown, ensure protection of the DUT during fault conditions.
© 2016 Integrated Device Technology, Inc.
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April 14, 2016
ZSPM4022 / ZSPM4023 Evaluation Board Description
3
ZSPM4023/ZSPM4022 Evaluation Kit Board
The ZSPM4023/ZSPM4022 Evaluation Kit Board is based on a typical application for the DUT. The user’s output load
connected to the Evaluation Board output can be either active or passive.
The Evaluation Board circuit hardwires the EN pin of the DUT as pulled high via the PVIN pin, which enables the DUT
on power-up.
Important:
The Evaluation Board does not have reverse polarity protection. Applying a negative voltage to the VIN
terminal could damage the device. Ensure that the specifications given in Table 2.1 and Table 4.1 are not exceeded.
Figure 3.1 Overview of the Evaluation Kit Board – Example using the ZSPM4023-12
© 2016 Integrated Device Technology, Inc.
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April 14, 2016
ZSPM4022 / ZSPM4023 Evaluation Board Description
4
Setup
Setup of the ZSPM4023/ZSPM4022 Evaluation Kit is relatively straightforward. In addition to the Evaluation Board, a
power supply with suitable cables for connecting to the Evaluation Board is required.
4.1.
Board Connections
Refer to Figure 3.1 for the locations of the Evaluation Board connectors. Table 4.1 gives details for the connections
for external signals and supplies.
Table 4.1
Evaluation Board Connectors
Description
The input supply voltage for the board. Note the polarity of the connection.
Positive (+) connects to VIN.
Important:
the board will be damaged if the input supply voltage exceeds +29V.
Ensure that the input supply voltage is within the specifications given in Table 2.1.
The input supply voltage ground for the board. Note the polarity of the connection.
Negative (-) connects to VINGND.
The regulated output supply voltage for the board. Note the polarity of the connection.
Positive (+) connects to VOUT.
The output supply voltage ground for the board. Note the polarity of the connection.
Negative (-) connects to VOUTGND.
Jumper header for VOUT selection. Refer to Table 4.2 for voltage selection positions for the
jumper shunt.
Connector Label
VIN
VINGND
VOUT
VOUTGND
J3
The output voltage is selected by the J3 jumper header as detailed in Table 4.2.
Table 4.2
VOUT J3 Jumper Selection
Place J3 Jumper
Across Pin Numbers
1–2
3–4
5–6
7–8
9 – 10
11 – 12
13 – 14
15 – 16
Output Voltage Selection
0.9V
1.0V
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
The J3 jumper position across pins 17-18 is not populated. See section 5.1 for options related to this position. The J3
jumper position across pins 19-20 is not supported.
© 2016 Integrated Device Technology, Inc.
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April 14, 2016
ZSPM4022 / ZSPM4023 Evaluation Board Description
4.2.
Test Points
The board provides the test points described in Table 4.3.
Table 4.3
Evaluation Board Test Points
Description
PGOOD pin: Power Good indicator from the regulator.
EN pin of the regulator: connection to the EN (enable) pin on the ZSPM4023/ZSPM4022. The EN pin on
the Evaluation Board is pulled high to the PVIN pin (VIN supply voltage) by a 10kΩ resistor so that the
ZSPM4023/ZSPM4022 is always enabled on power-on.
VIN voltage: test point for the input voltage for the ZSPM4023/ZSPM4022.
VINGND: test point for the ground of the input voltage for the ZSPM4023/ZSPM4022.
SW pin: test point for the SW pin, which can be used to evaluate the switching node of the regulator.
SW is the internal connection for the high-side MOSFET source and low-side MOSFET drain. TP7 is
located before the inductor L1.
VOUT: test point for the output voltage of the ZSPM4023/ZSPM4022. TP8 is located after the inductor
L1.
VOUTGND: test point for the ground of the output voltage for the ZSPM4023/ZSPM4022.
Test Point
TP1
TP4
TP5
TP6
TP7
TP8
TP9
5
5.1.
Board Options
Custom Output Voltage Selection
If the user wishes to drive to a custom V
OUT
voltage, resistor position R37 can be populated with an appropriate value
to set the output voltage. If the jumper is positioned across pins 17-18 of J3, resistor R37 is used as shown in the
schematic in Figure 6.1. The output voltage V
OUT
is determined by the following equation:
R28
V
OUT
=
V
FB
*
1
+
R37
Where V
FB
= 0.8V. For the Evaluation Board, R28 is a 2.49kΩ resistor as shown in the schematic in Figure 6.1. The
J3 jumper position across pins 19-20 is not supported in the Evaluation Board.
Note: V
OUT
should be limited to 5.5V as explained in section 3.1.5 of the
ZSPM4023 Datasheet
and
ZSPM4022
Datasheet,
which provide additional recommendations.
© 2016 Integrated Device Technology, Inc.
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April 14, 2016
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