Renesas DA9318 User manual

User Manual
DA9318 Direct Charging
Reference Board
UM-PM-022
Abstract
This document describes the hardware and software used to evaluate the DA9318 direct charging
reference board.

UM-PM-022
DA9318 Direct Charging Reference Board
User Manual
Revision 3.2
16-Feb-2022
CFR0012
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© 2022 Renesas Electronics
Contents
Abstract................................................................................................................................................ 1
Contents............................................................................................................................................... 2
1Terms and Definitions................................................................................................................... 3
2References..................................................................................................................................... 3
3Introduction.................................................................................................................................... 4
4Functional Description ................................................................................................................. 6
4.1 Main Charger ........................................................................................................................ 6
4.2 Power Monitor....................................................................................................................... 8
4.3 Direct Charging..................................................................................................................... 8
4.4 Over-Voltage Protection........................................................................................................ 8
4.5 Direct Charging Sequence.................................................................................................... 9
5DA9318 Direct Charging Reference Board Hardware.............................................................. 10
5.1 Default Link Positions and Connector Definitions............................................................... 11
5.2 USB Interface...................................................................................................................... 14
5.2.1 USB Power and GUI Reset................................................................................. 14
5.3 Power Supplies................................................................................................................... 14
6DA9318 Direct Charging Reference Board Software............................................................... 15
6.1 GUI Installation.................................................................................................................... 15
6.1.1 GUI Installation Step By Step Guide ................................................................... 16
6.2 Initial USB Connection........................................................................................................ 20
7GUI Software................................................................................................................................ 21
7.1 Controls............................................................................................................................... 21
7.2 Control Widgets................................................................................................................... 22
7.2.1 Enable/Disable Polling......................................................................................... 22
7.2.2 Charging Status Indicators .................................................................................. 22
7.2.3 Charge Status Indicators..................................................................................... 23
7.2.4 Raw I/O................................................................................................................ 25
7.2.5 Interface Control Information............................................................................... 25
7.2.6 I2C Bus Scan........................................................................................................ 25
7.2.7 Settings................................................................................................................ 26
7.3 Quick Start Guide................................................................................................................ 27
7.3.1 Manual Charge Operation................................................................................... 27
7.3.1.1 Operational Steps............................................................................ 28
7.3.2 Automatic Charge Operation............................................................................... 30
7.3.2.1 Customer Configuration................................................................... 31
7.3.2.2 Operational Steps............................................................................ 32
7.3.2.3 Charge Cycles Examples................................................................ 33
Revision History................................................................................................................................ 37

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1 Terms and Definitions
GND Ground
GUI Graphical User Interface
IC Integrated Circuit
JTAG Joint Test Action Group
LED Light Emitting Diode
LS Level Shifter
OTG On-The-Go
PC Personal Computer
PD Power Delivery
RCP Reverse Current Protection
SAM3U USB I2C Interface
SCL Serial CLock
SDA Serial DAta
TA Travel Adaptor
USB Universal Serial Bus
2 References
[1] DA9318 Datasheet, Dialog Semiconductor
[2] 329-03-D_ SCH.pdf, Dialog Semiconductor
[3] DA9318_Direct_Charging_Rev2.2.pdf, Dialog Semiconductor (under NDA)

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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
Type-C Receptacle
VBUS
Main Charger
SYS
Atmel
SAM3U
D+
D-
VBUS
GND
SYS
BAT
Mini-B
Receptacle
SW
BAT
IN
IN OUT
SCL
SDA
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
VBAT
GND
GND
Load Transient
nPG
nCHG
Power
Supply
PGND
PMID
SCL
SDA
BOOT
3V3
I2C
FAN25
58 VDD_IO (3V3)
VDD_IO
+5V_USB
+5V_USB
OTG nQON
GND
VBUS
CON VBUS SYS
TPD1S514
J37
RS
10 mΩ
INA219
IN+ IN-
VS SCL
SDA
VIN
RS
10 mΩ
CC1
CC2
TPS65982
SCL
SDA
CC1
CC2
VBUS
J64
OVP_OUT
OVP_OUT VDD_IO
VDD_IO &
VIN_3V3
Flash IC
SPI
Line Transient
VIN
VBAT
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 iW1781
primary side controller, iW676 secondary side controller and iW656 USB PD interface 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 (D3) 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.

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Figure 2: DA9318 Direct Charging Reference Board (329-03-D)

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4 Functional Description
During direct charging the main charger of the battery operated device is bypassed and the Dialog
TA is directly connected to the battery.
The difference between normal charging and direct charging is illustrated in Figure 3.
In order for the direct charging to work, the TA has to have a configurable output voltage and current
limit. Currently the Dialog’s 33 W TA can support output voltages of between 3.3 V and 11 V in 25
mV steps, and current limits up to 3 A in 50 mA steps.
DA9318
Main Charger SYS
SW
BAT
IN
IN OUT
nCPEN
nCE
+
-
SYSVBUS
'0'
’1'
DA9318
Main Charger SYS
SW
BAT
IN
IN OUT
nCPEN
nCE
+
-
SYSVBUS
'1'
’0'
Figure 3: Normal Charging (Top) and Direct Charging (Bottom)
4.1 Main Charger
The main charger is capable of handling a complete charging cycle without host interaction.
The input current limit is set via GPIOs and the charging current and dynamic power management
thresholds are set with external pull-down resistors.

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The charging statuses are communicated via LEDs. The main charger can be enabled with the nCE
signal driven from the microcontroller. During direct charging the main charger is disabled.

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4.2 Power Monitor
Two power monitor ICs (INA226), fitted on the DA9318 direct charging reference board, allow for
measurement of the main charger input voltage and input current, and for monitoring the battery
current and voltage.
That information is read out via the I2C interface and used in the control GUI software running on the
PC.
When direct charging is enabled, the DA9318 internal ADC is monitoring the input/output current and
input/output voltage.
Power monitoring is a safety feature associated with direct charging. The input power of the mobile
device has to be compared to the output power of the TA. A mismatch indicates a fault condition and
the charging has to be terminated.
4.3 Direct Charging
Reverse current protection (RCP) is enabled whenever DA9318 is not in the ACTIVE mode.
DA9318 is capable of starting up when VIN is within the accepted range defined by VIN2OUT_MIN and
VIN2OUT_MAX. If VIN is not within the accepted range during start-up, the start-up is aborted.
When the above conditions are satisfied the DA9318 can be enabled by writing CP_EN to allow for
direct charging. The TA voltage is set accordingly to allow the pre-defined charge current into the
battery.
During direct charging the main charger is disabled.
4.4 Over-Voltage Protection
Over-voltage protection (OVP) is needed for general protection of devices connected to VBUS.
TI TPD1S514, Fairchild FPF2280, and Kinetic KTS1682 can be used as they all are pinout
compatible parts with very similar feature sets.

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4.5 Direct Charging Sequence
A sequence diagram for direct charging is depicted in Figure 4.
NOTE
The DA9318 direct charging reference board communication to the TA is achieved using USB PD
communication protocol. The sequence diagram in Figure 4 is provided for information only. Please contact ic-
[email protected] for more information.
DA9318TA Main Charger
Read (VBAT)
loop
PC
Power
Monitor
TA
Control
nPG=’0'
Read VBAT
Configure target VBUS
based on BATT
Write (TARG_VBUS)
TA Control exchange power capabilities and
request to make a first contract. TA identity
checked and VDM communication initiated.
Set (VBUS)
Done
Read (VBUS)
If VBUS rises to the
target value, direct
charging is continued
nCE=’1'
CP_EN=’1'
loop Read (IIN)
Direct charging begins
Read (VBUS)
Write (TARG_VBUS)
Write (TARG_ILIM)
As VBAT rises the output voltage of the
TA is increased. After the target VBAT
is hit the current limit of the TA is step-
wise reduced
Set (VBUS)
loop
Direct charging ends
CP_EN=’0'
nCE=’0'
Set (ILIM)
The TA ramps up
the voltage
Write (TARG_ILIM)
Set (ILIM)
The main charger
starts charging
automatically
The main charger
handles the rest of the
charging cycle
Read (VBAT)
Battery connected
Mini USB connected
TA connected
Figure 4: Sequence Diagram for Direct Charging

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5 DA9318 Direct Charging Reference Board Hardware
The DA9318 direct charging reference board functionality can be broken down into sections, see
Figure 5:
●USB Type-C™cable input, OVP switch, input connector.
●Main charger / ADCs.
●DA9318 direct charging.
●USB PD.
●USB interface (I2C communication) and USB reset.
●Voltage monitoring connectors and IOs.
●Battery and system connectors.
Figure 5: Functional Sections
Main Charger /
ADCs
DA9318 Direct Charging
USB Interface (I2C
Communication)
and USB Reset
USB Type-C Cable Input, OVP
Switch, Input Connector
Voltage Monitoring Connectors and IOs
Battery and
System
Connectors
USP PD

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5.1 Default Link Positions and Connector Definitions
Figure 6: Default Link Positions
Table 1: Default Link Positions and Connector Definitions
Reference Designator
Position
Function
J1
NA
USB-C inlet
J2
NA
SMA connector for measuring IN
J3
NA
SMA connector for measuring C1P
J4
NA
Line transient connector
J5
1
IN sense point
2
GND sense point
J6
NA
SMA connector for measuring C1N (labeled as C1M)
J7
NA
SMA connector for measuring OUT
J8
NA
OUT connector
J9
1-2, 3-4, 5-6
(Close)
IN connector shunt to IN of DA9318
J10
1
SYS sense point
2
GND sense point
J11
NA
OUT connector

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Reference Designator
Position
Function
J12
NA
IN connector
J13
NA
IN connector
J15
Close (Default)
Short VOUT_DA9318 to VBATP for a local pack sensing
Open
VOUT_DA9318 and VBATP disconnected to allow cell sensing
J16
NA
VBATP connector for cell sensing
J17
1-2 (Close)
DA9318 input disconnect
3-4 (Close)
J18
Close (Default)
Short GND to VBATN for a local pack sensing
Open
GND and VBATN disconnected to allow cell sensing
J19
NA
VBATN connector for cell sensing
J20
NA
GND connector (IN side of board)
J21
NA
GND connector (IN side of board)
J22
1-2 (Open)
Main charger PGB GPIO connection to SAM3U
J23
1-2
Main charger PSEL settings
2-3 (Close)
J24
NA
GND connector (OUT side of board)
J25
NA
GND connector (OUT side of board)
J26
1-2 (Close)
Main charger Current Limit settings
J29
1-2 (Close)
Main charger thermistor connection
2-3
J30
1-2 (Open)
Main charger thermistor sensor short to ground
J31
NA
SMA connector for measuring SYS
J32
NA
JTAG: reserved
J33
NA
SMA connector for measuring C2N (labeled as C2M)
J34
1-2 (Open)
Important: This erases the USB IC firmware. DO NOT SHORT
J37
NA
Load transient connector
J38
NA
SYS connector
J39
1-2 (Close)
SCL from SAM3U connected to DA9318
3-4 (Close)
SDA from SAM3U connected to DA9318
5-6 (Close)
SCL from SAM3U connected to USB PD IC
7-8 (Close)
SDA from SAM3U connected to USB PD IC
J41
NA
SMA connector for measuring C2P
J44
1-2 (Close)
Main charger Status read connection to Atmel
J45
1-2 (Close)
INTB GPIO connection to SAM3U
J46
1-2 (Close)
OTG to Ground
J47
1-2 (Close)
Main charger enable through GPIO
J48
1-2 (Close)
Main charger enable
J49
1-2 (Close)
Both sides of level shifter set to VDD_IO
2-3
Level shift from AVDD to VDD_IO

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Reference Designator
Position
Function
J50
1-2 (Close)
Both sides of level shifter set to VDD_IO
2-3
Level shift from AVDD to VDD_IO
J55
1-2 (Close)
nFAULT pulled up to rail selected by J56
2-3
nFAULT pulled to ground
J56
1-2 (Close)
nFAULT PU selection: VDD_IO
2-3
nFAULT PU selection: AVDD
J57
1-2 (Close)
nIRQ pulled up to rail selected by J58
2-3
nIRQ pulled to ground
J58
1-2 (Close)
nIRQ PU selection: VDD_IO
2-3
nIRQ PU selection: AVDD
J59
NA
Measurement header
J60
NA
USB inlet
J61
1-2 (Close)
nIRQ connected to level shifter and SAM3U
3-4 (Close)
nFAULT connected to level shifter and SAM3U
5-6 (Close)
CC1 connected to level shifter and SAM3U
7-8 (Close)
CC2 connected to level shifter and SAM3U
9-10 (Close)
PWREN connected to level shifter and SAM3U
11-12 (Close)
nCPEN connected to level shifter and SAM3U
J62
1-2 (Close)
PWREN sorted to AVDD (options available for connection to +5V or
SYS)
2-3
PWREN shorted to GND to enter NO-POWER mode
J63
1-2 (Close)
nCPEN shorted to AVDD
2-3
nCPEN shorted to GND
S1
NA
Main charger ON switch
S2
NA
USB PD HRESET switch
S3
NA
Push button to reset the USB IC

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5.2 USB Interface
The DA9318 direct charging board uses an ATMEL®SAM3U®microcontroller as the USB
transceiver, programmed to deliver the following functionalities:
●I2C control interfaces.
●Discrete digital IO control (General Purpose Input Output (GPIO) and dedicated functions).
5.2.1 USB Power and GUI Reset
The USB is powered by an on-board regulator (VR2), see Figure 7. Pressing the USB RESET switch
S3 shuts down the on-board regulator VR2, powering down the supply for the SAM3U (USB I2C
interface). This resets the GUI communication with the reference board.
Figure 7: USB Interface Connector and Reset Switch
Table 2: Power Configuration Switch
Switch Name
Reference
Designator
Type
Function
USB RESET
S3
Push
button
Shuts down the on-board regulator that generates the
interface supply
5.3 Power Supplies
The DA9318 direct charging board is powered up when a power source is connected to IN (J12). IN
operating voltage range is +5.5 V to +10.5 V.
●The VDD_IO voltage is generated by an on-board regulator (VR1) supplied from the +5 V USB.
By default, the on-board generated VDD_IO is +3.3 V.
NOTE
For correct operation, connect the reference board to a USB port capable of supplying 500 mA.

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6 DA9318 Direct Charging Reference Board Software
The board is controlled using a graphical user interface (GUI), which requires a PC operating
Windows®2000/XP/Vista/Windows 7 with a USB1.1 or USB2 interface. The GUI allows the user to:
●Perform raw write and read operations to all control registers on Dialog and non-Dialog ICs.
●Monitor the charging status.
●Plot the DA9318 efficiency over time with saving and zoom feature.
●Plot the main charger efficiency over time with saving and zoom feature.
●Plot the DA9318 temperature over time with saving and zoom feature.
●Poll the DA9318 registers.
●Read ADC data from DA9318 (VIN, VBAT, IIN, IOUT and TJUNC) when the DA9318 is enabled.
●Read ADC data from external ADC ICs (VIN, VBAT, IIN and IOUT) when the main charger is enabled.
●Control the TA voltage and current limit via the USB PD protocol; and main charger voltage
termination, charge current and current limit.
●Send default settings.
●Read all registers displayed.
●Clear faults.
6.1 GUI Installation
The files required to install the software are available on the supplied USB drive. To install the
DA9318 reference board software:
1. Run setup_DA9318_Reference_GUI.x.x.x.xx.exe.
2. On completion, insert the USB cable and apply VIN.
a. For first time users Windows should detect the attached USB device. If this is not the case, it
may be necessary to install the driver by navigating to the required driver file in the USB
driver directory, see section 6.2. After installing the driver, reboot the PC to ensure correct
operation.
3. Start the software by running DA9318 Reference GUI.exe.

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6.1.1 GUI Installation Step By Step Guide
Figure 8: GUI Setup License Agreement
1. Select I accept the agreement then click Next.

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Figure 9: GUI Setup Destination Location
2. Click Next.
Figure 10: GUI Setup Start Menu Location

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3. Click Next.
Figure 11: GUI Setup Additional Tasks
4. Select the Create a desktop shortcut check box (if required) and click Next.

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Figure 12: GUI Setup Start Installation
5. Click Install.
Figure 13: GUI Setup Finish and Launch

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6. Click Finish.
Once the installation is completed, you may need to restart your computer.
When the software is installed, insert the USB cable before applying VSYS and VIN. The DA9318
SmartCanvas software can be started after power up.
6.2 Initial USB Connection
On connecting the USB to the PC for the first time, the SAM3U USB driver will request driver
updating/installation from the Windows operating system. On Windows 7 (32-bit) operating systems
(OS) the driver usually installs automatically. On Windows 7 (64-bit) machines it is common for the
complete driver installation to fail. If this happens, install the driver manually by following these steps:
1. Control Panel → Devices and Printers (double-click device with yellow exclamation sign).
2. Update Driver.
3. Browse my computer for driver software.
4. Select the Driver folder location: C:\Dialog Semiconductor\Power Management\DA9318
Reference GUI\Driver.
5. If Windows warns about the driver, select Install anyway.
6. Remove the USB cable and then re-insert it into the reference board.