Test Setup; Main Test Points And Jumpers - Panasonic EVB-NN30312A User Manual

Regulations 312A805E
No.

4 Test Setup

This section describes how to properly connect, set up and use the Evaluation Board.

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 7A must be connected to the pad PVIN. The load must be connected to the pad
DCDCOUT. Wire lengths must be minimized to reduce losses in the wires.
Test point PVIN provides a place to monitor the input voltages 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
Main PVIN
Test
DCDCOUT
Points
V-EN
Jumpers J-EN
J-MODE
J-FSEL
J-PGOOD
Jumper
J-EN
J-EN
J-MODE
J-MODE
J-FSEL
J-FSEL
J-PGOOD
J-PGOOD
Note: The parameters above is subject to change without notice for improvement.
2012-04-17
Revised
User's Guide
for Evaluation Board
Table 6. Function of Main Test points and Jumpers
Default
-
-
-
V-EN
VREG
-
open
Table 7. Jumper Setup
Setup Mode
V-EN
enable
EN pin
GND
VREG
FCCM
MODE pin
mode
GND
VREG
250kHz
FSEL pin
GND
Pull up to
Pull up to VREG
VREG
PGOOD pin
Pull up to V-EXT
Tentative
PVIN test point at PVIN connector
DCDCOUT test point at DCDCOUT connector
Test point supplying voltage to EN pin
3-pin headers for enable of NN30312A. Connect EN to GND to
disable, to V-EN to enable.
3-pin headers to choose mode. Connect MODE to GND to choose
SKIP mode, to VREG to choose FCCM mode.
3-pin headers to choose frequency. Connect FSEL to GND to
choose 1250kHz, open to choose 750kHz, to VREG to choose
250kHz.
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.
Setup Mode
J-EN
V-EN
disable
EN pin
GND
J-MODE
VREG
SKIP mode
MODE pin
GND
J-FSEL
VREG
750kHz
FSEL pin
GND
J-PGOOD
Pull up to VREG
open
PGOOD pin
Pull up to V-EXT
Industrial Devices Company, Panasonic Corporation
EVB-NN30312A
Total Pages
14
Function
Setup Mode
J-EN
V-EN
disable
EN pin
GND
J-MODE
VREG
SKIP mode
MODE pin
GND
J-FSEL
VREG
1250kHz
FSEL pin
GND
J-PGOOD
Pull up to
Pull up to VREG
V-EXT
PGOOD pin
Pull up to V-EXT
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