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

214
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
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

314
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
Automotive & Industrial Systems Company, Panasonic Corporation
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).

414
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
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

514
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
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

614
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
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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NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
Automotive & Industrial Systems Company, Panasonic Corporation
Regulations
No. 320R202E
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
＊

814
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
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

914
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
Automotive & Industrial Systems Company, Panasonic Corporation
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

1014
NN30320A-EVB
User’s Guide
for Evaluation Board
Revised
Total Pages Page
Automotive & Industrial Systems Company, Panasonic Corporation
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