Panasonic EVB-NN30312A User Manual
Regulations
No.
312A805E
The product specifications described in this book are subject to change without
notice for the product which is currently under development. At the final stage of
your design, purchasing, or use of the product, therefore, ask for the most up-todate Product Standards in advance to make sure that the latest specifications satisfy
your requirements.
Tentative
User’s Guide
for Evaluation Board
Total Pages Page
114
Part No.Part No.
EVB-NN30312A
Industrial Devices Company
Panasonic Corporation
2012-04-17
Revised
Industrial Devices Company, Panasonic Corporation
Regulations
No.
312A805E
User’s Guide
for Evaluation Board
EVB-NN30312A
Total Pages Page
Tentative
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 Jumper setup .................................…………….…………………..... 6
214
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
2012-04-17
Revised
Industrial Devices Company, Panasonic Corporation
Regulations
No.
312A805E
User’s Guide
for Evaluation Board
Tentative
EVB-NN30312A
Total Pages Page
314
1 Introduction
This user’s guide contains background information for the
NN30312A : 10A Synchronous DCDC Step Down Regulator with Integrated Power MOSFET
as well as support documentation for the NN30312A Evaluation Board (EVB-NN30312A). Also included are the schematic, the test setup, the bill of materials and the Board Layout for the Evaluation Board.
1.1 Overview
NN30312A is a synchronous DCDC 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 minimizes the changes of output voltage.
Since it is possible to use capacitors with small capacitance and it is unnecessary to add external parts for system phase compensation,
this IC realizes downsizing of set and reducing in the number of external parts.
Output voltage is adjustable by user. Maximum current is 10 A.
1.2 Features
—High-speed response DCDC Step Down Regulator circuit that employs the hysteretic control system
—Integrated Two 9mΩ (Typ) MOSFETs for high efficiency
—Switchable FCCM (continuous) / SKIP (discontinuous) mode
—Input Voltage Range: 4.5V (TBD)~ 30V (TBD)
—Output Voltage Range: 0.75V (TBD) ~ 5.5V (TBD)
—Built-in 0.6V±1% (TBD) Reference Voltage
—Selectable Switching Frequency 250kHz / 750kHz / 1250kHz
—Adjustable Soft 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), Output Over-Current
Protection (OCP), Short-Circuit Protection (SCP) functions
Input voltage and output current range for the evaluation Board are given in Table 1.
Table 1. Input Voltage and Output Current Summary
Evaluation Board Input Voltage range Output Current Range
EVB-NN30312A
PVIN, AVIN = 4.5V(TBD) to 30V (TBD) *1
V-EN = 1.5V to 5V
*1 : PVIN pin and AVIN pin are normally connected on Evaluation Board by 0 ohm resister (R-AVIN).
0A to 10A
1.3 Typical Applications
—High Current Distributed Power 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
— 40pin Plastic Quad Flat Non-leaded Package Heat Slug Down (QFN Type)
(Size : 6 ×
6 mm, 0.5 mm pitch)
1.5 Type
—Multichip IC
Note: The parameters above is subject to change without notice for improvement.
2012-04-17
Revised
Industrial Devices Company, Panasonic Corporation
Regulations
No.
312A805E
1.6 Block Diagram
User’s Guide
for Evaluation Board
Tentative
AVIN PVIN
EVB-NN30312A
Total Pages Page
414
EN
VREG
VOUT
VFB
MODE
FSEL
CTL
VREG
Soft Start
VREF
VREF SS
ON/OFF
Control
SS AVIN
Soft Start
Logic
Driver
VREG
PGOOD
BST
PVIN
VOUT
LX
PGND
AGND
Figure 1. Block Diagram
Note: The parameters above is subject to change without notice for improvement.
2012-04-17
Revised
Industrial Devices Company, Panasonic Corporation
Regulations
No.
312A805E
2 Evaluation Board
2.1 Appearance
User’s Guide
for Evaluation Board
Tentative
EVB-NN30312A
Total Pages Page
514
VOUT
(Force)
+
+
ｰ
V
A
VOUT
(Sense)
GND
ｰ
ｰ
V
+
PVIN
(Force)
PVIN
(Sense)
Please see the next page for
further details about jumper
setup.
+
ｰ
Note: The parameters above is subject to change without notice for improvement.
Load
GND
Jumper for
EN
Figure 2. Appearance of Evaluation Board
2012-04-17
Revised
Jumper for
MODE
Industrial Devices Company, Panasonic Corporation
Jumper for
FSEL
Jumper for
PGOOD
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