Panasonic NN30320A User manual

Revised
User’s Guide
for Evaluation Board
Total Pages Page
114
NN30320A-EVB
Part No.Part No.
Automotive & Industrial Systems Company, Panasonic Corporation
Automotive & Industrial Systems Company
Panasonic Corporation
Regulations
No. 320R202E
The product specificationsdescribed in this book are subject to change without
notice for the product which is currentlyunder development. At the final stage of
your design, purchasing,or use of the product, therefore, ask for the most up-to-
date Product Standardsin advance to make sure thatthe latest specificationssatisfy
your requirements.
2013-05-07

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Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
2013-05-07
Contents
1 Introduction
1.1 Overview …………………………………………………….………………........... 3
1.2 Features ………………………………………………….……………………....... 3
1.3 Typical Applications ………………………………………………….…...... 3
1.4 Package ………………………………………………….………………………... 3
1.5 Type ……………………………………………………….…………………... 3
1.6 Block Diagram ………………………………………………………... 4
2 Evaluation Board
2.1 Appearance ..………….………………………................................ 5
2.2 Jumpers setup .................................…………….…………………..... 6
3 Schematic .........………………………………………………………... 7
4 Test Setup
4.1 Main Test Points and Jumpers ………………………………………………………... 8
4.2 Output Voltage Setpoint ………………............................................................... 9
5 Bill of Materials .........………………………………………………………... 10
6 Board Layout .........………………………………………………………... 11
Usage Notes ………………………………………….……………………………....... 14

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Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
Table 1. Input Voltage and Output Current Summary
1 Introduction
This user’s guide contains background information for the
NN30320A : 3A Synchronous DC-DC Step Down Regulator with Integrated Power MOSFET
as well as support documentation for the NN30320AEvaluation Board (NN30320A-EVB). Also included are the schematic, the test set-
up, the bill of materialsand the Board Layout for the Evaluation Board.
1.1 Overview
NN30320Ais a synchronous DC-DC Step Down Regulator (1-ch) with integrated power MOSFETs, which employs hysteretic control
system. By this system, when load current changes suddenly, it responds at high speed and minimizesthe changes of output voltage.
Since it is possible to use capacitors with small capacitance and it is unnecessary to add externalparts for system phase compensation,
this IC realizes downsizing of set and reducing in the number of external parts.
Output voltage is adjustableby user. Maximum current is 3 A.
1.2 Features
—High-speed responseDC-DC Step Down Regulator circuit that employs the hysteretic control system
—Integrated Two 20mΩ(Typ) MOSFETs for high efficiency
—Switchable FCCM (continuous) / SKIP (discontinuous) mode
—Input Voltage Range: 4.5V ~ 28V
—Output Voltage Range: 0.75V ~ 5.5V
—SelectableSwitching Frequency210kHz / 430kHz / 650kHz
—AdjustableSoft Start
—Low Operating and Standby Quiescent Current
—Indication for normal Output Voltage to PGOOD pin
—Built-in Under Voltage Lockout (UVLO), Thermal Shut Down (TSD), Output Over-Voltage Detection (OVD), OutputOver-Current
Protection (OCP), Short-Circuit Protection (SCP) functions
Input voltage and output current range for the evaluation Board are given in Table 1.
1.3 Typical Applications
—High Current DistributedPower Systems such as HDDs (Hard Disk Drives), SSDs (Solid State Drives), PCs, Game consoles, Severs,
Security Cameras, Network TVs, Home Appliances, OA Equipment etc.
1.4 Package
—24pin PlasticQuad Flat Non-leaded Package Heat Slug Down (QFN Type)
(Size : 4 4 mm, 0.5 mm pitch)
1.5 Type
—MultichipIC
Evaluation Board Input Voltage range Output Current Range
EVB-NN30321A PVIN, AVIN = 4.5V to 28V *1
V-EN = 1.5V to 5V 0A to 3A
*1 : PVIN pin and AVIN pin are normally connected on Evaluation Board by 0 ohm resister (R-AVIN).

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Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
1.6 Block Diagram
Figure 1. Block Diagram
Driver
Control
Logic
CTL VREF SS
VREG
Soft Start
VREF
Soft Start
VOUT
MODE
VFB
VREG
FSEL
EN
SS AVIN
PGOOD
BST
PVIN
LX
PGND
AGND
AVIN PVIN
VREG
ON/OFF
VOUT

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Revised
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Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
2 Evaluation Board
2.1 Appearance
Figure 2. Appearance of Evaluation Board
GND PVIN
(Force) PVIN (Sense)
VOUT
(Sense)
Jumper for
MODE
VOUT
(Force)
GND Jumper for
FSEL Jumper for EN
Jumper for
PGOOD
Load A
ｰ+
+
ｰ
+
ｰ
ｰ+
V
V
Please see the next page for
further details about jumpers
setup.
NN30320A

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Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
Jumper
Mode FCCM SKIP
Table 2. J-MODE (Control modes）
J-MODE
Table 3. J-FSEL（Control SW frequency）
Table 5. J-PGOOD (Control the Voltage PGOOD pin pulled up to）
2.2 Jumpers Setup
MODE pin, FSEL pin, EN pin, PGOOD pin are able to be controlled by J-MODE, J-FSEL, J-EN, J-PGOOD.
Jumper
Status enable disable
Table 4. J-EN (Control enable/disable）
J-EN
Jumper
Frequency 210kHz 650kHz 430kHz
J-FSEL J-FSEL
Jumper
Pull up to VREG V-EXT
J-EN
J-MODE
J-FSEL
Figure 3. Appearance of J-EN, J-MODE, J-FSEL
Figure 4. Appearance of J-PGOOD
J-PGOOD
J-PGOOD

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Regulations
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2013-05-07
Note: The parameters above is subject to change for improvement without notice.
＊: Not Installed
3 Schematic
Figure 5. Evaluation Board Schematic
7 8 9 10 11 12
13 14 15 16 17 18
19 20 21 22 23 24
1 2 3 4 5 6
PGND
FSEL
R-FB5
LX
BST
MODE
AGND
AVIN
EN
VREG
VFB
VOUT
SS
PGOOD AGND
PVIN
PVIN
C-PVIN1 C-PVIN2 C-PVIN3
C-BST
AVIN
J-MODE
VREG
J-PGOOD
J-EN
VREG
J-FSEL
V-EXT
R-PG
PGOOD
PVIN
AVIN
C-SS
V-EN
＊
VREG
Solder Land_PVIN
R-AVIN
To AVINTo PVIN
C99
＊
Solder Land_GND
GND
To GND
GND
R-FB3 R-FB1
R-VFB
R-FB2R-FB4
GND
C-DCDCOUT1 C-DCDCOUT2 C-DCDCOUT3
CAP_GND
GND
CAP_GND
(Solder Land) DCDCOUT
DCDCOUT
(Solder Land)
GND
GND
C-VREG
VREG
VREG
GND
GND
GND
GNDGND
GND
GND
GND
GNDGNDGND
GND
L-LX
C-AVIN1 C-AVIN2 C-AVIN3
C-FB
＊

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Revised
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Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
This section describes how to properly connect, set up and use the Evaluation Board.
4 Test Setup
4.1 Main Test Points and Jumpers
The Evaluation Board is provided with test points and jumpers as shown in Table 6.
A power supply cable of supplying sufficient current must be connected to the pad PVIN. The load must be connected to
the pad DCDCOUT. Wire lengths must be minimizedto reduce losses in the wires.
Test point PVIN provides a place to monitor the inputvoltages with GND providing a convenient ground reference.
Test point DCDCOUT is used to monitor the output voltage with GND as the ground reference.
Jumper Setup is shown in Table 7.
Reference Designator Default Function
Main
Test
Points
PVIN - PVIN test point at PVIN connector
DCDCOUT - DCDCOUT test point at DCDCOUT connector
V-EN - Test point supplying voltage to EN pin
Jumpers J-MODE VREG 3-pin headers to choose mode. Connect MODE to GND to choose
SKIP mode, to VREG to choose FCCM mode.
J-FSEL - 3-pin headers to choose frequency. Connect FSEL to GND to
choose 430kHz, open to choose 650kHz, to VREG to choose
210kHz
J-EN V-EN 3-pin headers for enable of NN30320A. Connect EN to GND to
disable, to V-EN to enable.
J-PGOOD open 3-pin headers for pull-up of PGOOD. Connect to VREG to allow
pull up to VREG pin, to V-EXT to allow pull up to V-EXT pin.
Table 6. Function of Main Test points and Jumpers
Jumper Setup Mode Setup Mode Setup Mode
J-MODE
FCCM
mode
SKIP mode
J-FSEL
210kHz 650kHz 430kHz
J-EN enable disable
J-PGOOD Pull up to
VREG Pull up to V-EXT
Table 7. Jumper Setup
V-EN
EN pin
GND
J-EN
V-EN
EN pin
GND
J-EN
VREG
MODE pin
GND
J-MODE
VREG
MODE pin
GND
J-MODE
VREG
FSEL pin
GND
J-FSEL
VREG
FSEL pin
GND
J-FSEL
VREG
FSEL pin
GND
J-FSEL
Pull up to VREG
PGOOD pin
Pull up to V-EXT
J-PGOOD
Pull up to VREG
PGOOD pin
Pull up to V-EXT
J-PGOOD

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Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
4.2 Output Voltage Setpoint
To change the output voltage of the Evaluation Board, it is necessary to change the value of resister R-FB1~R-FB4.
The values of R-FB1~R-FB4 for a specific output value can be calculated using Equation (1).
For output voltage from 0.75V to 5.5V:
Table 8 lists the R-FB1~R-FB4 values for some common output voltage.
Vout= (R-FB3 + R-FB4)
(R-FB1 + R-FB2 + R-FB3 + R-FB4) x 0.6 - - - - - - - - - (1)
Output Voltage (V) R-FB1(k ohm) R-FB2(k ohm) R-FB3(k ohm) R-FB4(k ohm)
1.00 1.0 0 1.5 0
1.05 1.2 0 1.6 0
1.20 1.5 0 1.5 0
1.80 1.0 1.0 1.0 0
2.50 4.7 1.0 1.8 0
3.30 3.3 1.2 1.0 0
5.00 10.0 1.0 1.5 0
Table 8. Output Voltages

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Regulations
No. 320R202E
2013-05-07
Note: The parameters above is subject to change for improvement without notice.
Reference Designator QTY Value Description Size *3 Manufacturer Part Number
C-AVIN1 1 10uF Capacitor, Ceramic, 50V, X7R, 20% 1210 TAIYO YUDEN UMK325AB7106MM-T
C-AVIN2 1 10uF Capacitor, Ceramic, 50V, X7R, 20% 1210 TAIYO YUDEN UMK325AB7106MM-T
C-AVIN3 1 0.1uF Capacitor, Ceramic, 100V, X7R, 10% 0603 Murata GRM188R72A104KA35L
C-BST 1 0.1uF Capacitor, Ceramic, 100V, X7R, 10% 0603 Murata GRM188R72A104KA35L
C-DCDCOUT1 1 22uF Capacitor, Ceramic, 25V, X7R, 10% 1210 Murata GRM32ER71E226KE15L
C-DCDCOUT2 1 22uF Capacitor, Ceramic, 25V, X7R, 10% 1210 Murata GRM32ER71E226KE15L
C-DCDCOUT3 - - - - - -
C-PVIN1 1 10uF Capacitor, Ceramic, 50V, X7R, 20% 1210 TAIYO YUDEN UMK325AB7106MM-T
C-PVIN2 1 10uF Capacitor, Ceramic, 50V, X7R, 20% 1210 TAIYO YUDEN UMK325AB7106MM-T
C-PVIN3 1 0.1uF Capacitor, Ceramic, 100V, X7R, 10% 0603 Murata GRM188R72A104KA35L
C-SS 1 10nF Capacitor, Ceramic, 100V, X7R, 10% 0603 Murata GRM188R72A103KA01L
C-VREG 1 1.0uF Capacitor, Ceramic, 25V, X7R, 10% 0603 Murata GRM188R71E105KA12L
L-LX 1 1.0uH Inductor, 8.1A, 6.9mΩ 0.276×
0.260 inch Panasonic ETQP3W1R0WFN
R-AVIN 1 0 Resistor, Chip, 0.1W 0603 Panasonic ERJ3GEY0R00V
R-FB1 *2 1 3.3k Resistor, Chip, 0.1W, 1% 0603 Panasonic ERJ3EKF3301V
R-FB2 *2 1 1.2k Resistor, Chip, 0.1W, 1% 0603 Panasonic ERJ3EKF1201V
R-RB3 *2 1 1.0k Resistor, Chip, 0.1W, 1% 0603 Panasonic ERJ3EKF1001V
R-FB4 *2 1 0 Resistor, Chip, 0.1W 0603 Panasonic ERJ3GEY0R00V
R-VFB 1 0 Resistor, Chip, 0.1W 0603 Panasonic ERJ3GEY0R00V
R-FB5 1 0 Resistor, Chip, 0.1W 0603 Panasonic ERJ3GEY0R00V
R-PG 1 100k Resistor, Chip, 0.1W, 1% 0603 Panasonic ERJ3EKF1003V
C99 - - - - - -
5 Bill of Materials
*2 : These resistors determineoutput voltage.
The setting in the above table sets the output voltage for 3.3V.
To change the output voltage, it is necessary to change these resistors following Equation (1) in the section 4.2.
*3 : These values comply with EIA standards.
Table 9 presents the bill of materialsfor the Evaluation Board.
Table 9. Evaluation Board Bill of Materials

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Note: The parameters above is subject to change for improvement without notice.
The board layout for the evaluation board is shown in Figure 6 throughFigure 11.
Figure 6. Top Layer with silk screen ( Top View )
Figure 7. Bottom Layer with silk screen ( Bottom View )
6 Board Layout
NN30320A

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Figure 8. Top Layer ( Top View )
Figure 9. Layer 2 ( Top View )

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2013-05-07
Note: The parameters above is subject to change for improvement without notice.
Figure 10. Layer 3 ( Top View )
Figure 11. Bottom Layer ( Top View )

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IMPORTANT NOTICE
1. When using the IC for new models, verify the safety including the long-term reliability for each product.
2. When the application system is designed by using this IC, please confirm the notes in this book.
Please read the notes to descriptions and the usage notes in the book.
3. This IC is intended to be used for general electronic equipment.
Consult our sales staff in advance for information on the following applications: Special applications in which exceptional
quality and reliability are required, or if the failure or malfunction of this IC may directly jeopardize life or harm the human body.
Any applications other than the standard applications intended.
(1) Space appliance (such as artificial satellite, and rocket)
(2) Traffic control equipment (such as for automotive, airplane, train, and ship)
(3) Medical equipment for life support
(4) Submarine transponder
(5) Control equipment for power plant
(6) Disaster prevention and security device
(7) Weapon
(8) Others : Applications of which reliability equivalent to (1) to (7) is required
Our company shall not be held responsible for any damage incurred as a result of or in connection with the IC being used for
any special application, unless our company agrees to the use of such special application.
However, for the IC which we designate as products for automotive use, it is possible to be used for automotive.
4. This IC is neither designed nor intended for use in automotive applications or environments unless the IC is designated by our
company to be used in automotive applications.
Our company shall not be held responsible for any damage incurred by customers or any third party as a result of or in
connection with the IC being used in automotive application, unless our company agrees to such application in this book.
5. Please use this IC in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled
substances, including without limitation, the EU RoHS Directive. Our company shall not be held responsible for any damage
incurred as a result of our IC being used by our customers, not complying with the applicable laws and regulations.
6. Pay attention to the direction of the IC. When mounting it in the wrong direction onto the PCB (printed-circuit-board),
it might be damaged.
7. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins.
In addition, refer to the Pin Description for the pin configuration.
8. Perform visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as
solder-bridge between the pins of the IC. Also, perform full technical verification on the assembly quality, because the same
damage possibly can happen due to conductive substances, such as solder ball, that adhere to the IC during transportation.
9. Take notice in the use of this IC that it might be damaged when an abnormal state occurs such as output pin-VCC short
(Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load short). Safety measures such as
installation of fuses are recommended because the extent of the above-mentioned damage will depend on the current
capability of the power supply.
10. The protection circuit is for maintaining safety against abnormal operation. Therefore, the protection circuit should not work
during normal operation.
Especially for the thermal protection circuit, if the area of safe operation or the absolute maximum rating is momentarily
exceeded due to output pin to VCC short (Power supply fault), or output pin to GND short (Ground fault), the IC might be
damaged before the thermal protection circuit could operate.
11. Unless specified in the product specifications, make sure that negative voltage or excessive voltage are not applied to the
pins because the IC might be damaged, which could happen due to negative voltage or excessive voltage generated during
the ON and OFF timing when the inductive load of a motor coil or actuator coils of optical pick-up is being driven.
12. Product which has specified ASO (Area of Safe Operation) should be operated in ASO
13. Verify the risks which might be caused by the malfunctions of external components.
14. Connect the metallic plates (fins) on the back side of the LSI with their respective potentials(AGND, PVIN, LX).
The thermalresistance and the electrical characteristicsare guaranteed only when the metallicplates (fins)are
connected with their respective potentials.

Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment, communications
equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book.
Consult our sales staff in advance for information on the following applications:
–Special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment,
life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of
the products may directly jeopardize life or harm the human body.
It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with
your using the products described in this book for any special application, unless our company agrees to your using the products in
this book for any special application.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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