Dialog DA9318, User Manual

Page: 4 / 27

UM-PM-022
DA9318 Direct Charging Reference Board
User Manual Revision 1.0 1-Mar-2017
CFR0012
4 of 27
© 2017 Dialog Semiconductor
3 Introduction
The purpose of the reference board is to demonstrate DA9318 in a direct charging application.
The document covers a normal charging cycle, using an off-the-shelf charger IC and a charging cycle
with the direct charging enabled. Direct charging means connecting the travel adaptor (TA) directly to
the battery in the constant current charging phase. A block diagram of the DA9318 direct charging
reference board is shown in
Figure 1 .
DA9318 Direct Charging Reference Board
DA9318
T
y
p
e
-C
R
e
c
e
p
ta
c
le
VBUS
Master Charger
SYS
Atmel
SAM3U
D+
D-
VBUS
GND
SYS
BAT
M
in
i-
B
R
e
c
e
p
ta
c
le
SW
BAT
IN
IN OUT
D+ PORT
D- PORT
SCL
SDA
IN
D+ SAM3U
D- SAM3U
GPIO
LP3871
3V3
Travel
Adaptor
Battery
Emulator
Load
nCE
nCE
nPG
STAT
nCPEN
nCPEN
SYS
ILIM
IUSB[2:0]
ILIM
GND
INA219
IN+ IN-
VS
SCL
SDA
SYS
GND
GND
Hammer board
nPG
nCHG
Power
Supply
PGND
PMID
SCL
SDA
BOOT
3V3
MPC4725
VDD
SCL
SDA
4V9
VSS
VOUT
D+ PORT
D- PORT
D+ DAC
MPC4725
VDD
SCL
SDA
4V9
VSS
VOUT
D- DAC
nCS
SCLK
MOSI
MISO
I2C
SPI
D+ SAM3U
D- SAM3U
FAN25
58
1V8
1V8
+5V_USB
+5V_USB
OTG
nQON
GND
VBUS
CON VBUS
SYS
TPD1S514
J37
RS
10
mΩ
INA219
IN+ IN-
VS
SCL
SDA
SYS
RS
10
mΩ
DLINK
DLINK
LP3878
4V9
HV LS
I2C_HV
SDA_HV
SCL_HV
SDA_HV
SCL_HV
SDA_HV
SCL_HV
4V9 1V8
CC1
CC2
FUSB302B
SCL
SDA
CC1
CC2
VDD
4V9
J64
Figure 1: DA9318 Direct Charging Block Diagram
The DA9318 direct charging reference board, see Figure 2 , facilitates the measurement, evaluation,
and configuration of a battery charging cycle when connected to a TA that includes the iW1780H
primary side controller and iW676 secondary side controller chip set.
Dialog’s software package SmartCanvas™
uses a simple graphical user interface which enables
DA9318 to be controlled via the USB port of a PC. The mini USB connection is visible on the left side
of the board. When the cable is connected to the USB port of the PC the green LED (D1) is on.
The board contains jumper links, see Figure 6 , to provide access to alternative configurations and
measurement test points. Most standard operating modes are evaluated with minimal link changes.