Renesas ISL9241EVAL1Z Manual de usuario

Rev.2.00 Oct 2018

User’s Manual

ISL9241EVAL1Z

User’s Manual: Evaluation Board

Battery and Optical

UG184 Rev.2.00 Page 2 of 30

Oct 22, 2018

UG184

Rev.2.00

Oct 22, 2018

ISL9241EVAL1Z

Evaluation Board

USER’S MANUAL

1. Overview

The ISL9241 is a configurable buck-boost Narrow Output Voltage DC (NVDC) and Hybrid Power Buck-Boost

(HPBB) combo charger that uses the advanced Renesas R3™ Technology to provide high light-load efficiency, fast

transient response, and seamless DCM/CCM transitions for a variety of mobile and industrial applications.

In Charge mode, the ISL9241 takes input power from a wide range (4V to 20V) of DC power sources (conventional

AC/DC charger adapters, USB PD ports, travel adapters, etc.) and safely charges battery packs with up to four cells in

a series configuration.

The ISL9241 supports On-the-Go (OTG) functionality for 2- and 4-cell battery applications. When OTG function is

enabled, the ISL9241 operates in Reverse Buck mode to provide 5V at the USB port.

Serial communication through SMBus/I2C allows programming of many critical parameters to deliver a customized

solution. These programming parameters include, but are not limited to, adapter current limit, charger current limit,

system voltage setting, and trickle charging current limit.

The ISL9241EVAL1Z evaluation board is designed to demonstrate the performance of the ISL9241. From the PROG

pin to GND, the resistor can be used to program the default value numbers of the battery in series, the switching

frequency, and the adapter current limit charging function. The default value numbers can also be set by SMBus.

1.1 Key Features

• Buck-boost NVDC and HPBB charger for 2-, 3-, and 4-cell Li-ion batteries

• Autonomous End of Charge (EOC) option

• System power monitor PSYS output

• PROCHOT# open-drain output

• Allows trickle charging of depleted battery

• Supplemental power (Intel VMIN active protection)

• Ideal diode control in Turbo mode

• Reverse buck, boost, and buck-boost operation from battery

• Two-level adapter current limit available

• Battery Ship mode option

• SMBus and auto-increment I2C compatible

1.2 Specifications

•V

IN = 3.8V to 24V (no dead zone)

•V

OUT = 3.9V to 18.304V

•MAX I

charge up to 6A

1.3 Ordering Information

Part Number Description

ISL9241EVAL1Z ISL9241 buck-boost charger evaluation board

UG184 Rev.2.00 Page 3 of 30

Oct 22, 2018

ISL9241EVAL1Z 1. Overview

1.4 Related Literature

For a full list of related documents, visit our website:

•ISL9241 product page

1.5 Recommended Equipment

• 0V to 25V power supply with at least 6A source current capability

• Electronic load capable of sinking current up to 6A

• Battery emulator capable of sinking and sourcing current up to 6A

• Digital Multimeters (DMMs)

• 100MHz quad-trace oscilloscope

Note: You can use a power supply (that can source but cannot sink current) in parallel with an e-load Constant Current

(CC) mode to emulate the battery. For example, when charging, set the charging current command lower than the CC

mode e-load. If the e-load CC mode current is set at 3A, the charge current command is 2A and the e-load takes 2A

from the charger and another 1A from the power supply in parallel with it. When discharging, the power supply acts

just like the battery to discharge current. You can also use the e-load Constant Voltage (CV) mode to emulate the

battery to take the charging current from the charger and set the e-load CV voltage below the MaxSysV register

setting. However, this e-load CV mode cannot source current like a battery.

Figure 1. ISL9241EVAL1Z Block Diagram

ISL9241

BOOT1

PHASE1

UGATE1

VDDP

LGATE1

LGATE2

UGATE2

PHASE2

BOOT2

SCL

SDA

VBAT

CSOP

CSON

DCIN

VDD

COMPF

PSYS

BGATE

PROCHOT#

ACOK

GND

CSIP

CSIN

AMON/BMON

VADP

2S-4S

Battery

PROG

CMOUT/INT#

OTGEN/CMIN

Rs1

Rs2

BATGONE/NTC

NGATE

VSYS

BYPSRC

RTHM

VSYS

VADP

BYPSG

BYPSRC

COMPR

RPSYS

UG184 Rev.2.00 Page 4 of 30

Oct 22, 2018

ISL9241EVAL1Z 2. Installing the ISL9241 Software

2. Installing the ISL9241 Software

The ISL9241 Control Software communicates with the ISL9241 controller using the USB to on-board SMBus

Graphical User Interface (GUI). The GUI facilitates access to the ISL9241 SMBus registers.

This section describes how to install, start, and use the GUI.

2.1 Required Hardware

• ISL9241EVAL1Z evaluation board

• USB 2.0 A/B cable

2.2 Required Software

The software Installation Wizard package includes all three required components:

• ISL9241 SMBus Control Tool

• National Instruments Runtime VISA Engine

• USB interface module driver

2.3 Installing the GUI

Both the ISL9241 Control Software and the National Instruments Runtime Engine are installed automatically from

the installation wizard.

Note: Close all other applications before this installation and reboot the computer when the installation is

complete.

(1) Extract the zip file to the local drive, not the network drive. The network’s security prohibits the .inf file from

being copied onto the network.

(2) Run autorun.exe. The menu in Figure 2 appears.

Figure 2. ISL9241 SMBus Control Tool Installation Wizard

(3) Click Install ISL9241 SMBus Control Tool.

UG184 Rev.2.00 Page 5 of 30

Oct 22, 2018

ISL9241EVAL1Z 2. Installing the ISL9241 Software

(a) The window shown in Figure 3 appears. Click Next.

Figure 3. ISL9241 Control Software Installer

(4) Follow the instructions to accept the two End User License Agreements to complete the software installation.

(5) Click Close Menu from the installation wizard.

2.4 Installing the USB Driver

This process explains how to install the SMBus to USB interface driver.

The driver supports Microsoft Vista, Windows 7, Windows 8, and Windows 8.1 operating systems.

Note: If you installed the driver or certificate previously, skip this section.

(1) Open the installation wizard package.

(2) Navigate to USB-SMBus Driver. Right-click the SMBus-USB-Win10.inf file and select Install.

Note: Install the driver from the local drive. The driver installation fails due to network security if you install from

the network drive.

Figure 4. ISL9241 USB Driver Location

UG184 Rev.2.00 Page 6 of 30

Oct 22, 2018

ISL9241EVAL1Z 2. Installing the ISL9241 Software

(3) The message in Figure 5 appears when the driver is successfully installed.

Figure 5. ISL9241 Successful Driver Installation

(4) If the installation fails the Digital Signature required in Windows 10 or security settings, complete the

following steps to bypass it.

Note: To complete the process, print and complete the steps below. The system restarts and these instructions are

needed.

(5) Open the Command Prompt from the Start menu.

(6) Enter the command “shutdown /r /o /f /t 00” in the Command Prompt.

(7) Click OK.

(8) The system restarts to the Choose an option screen.

(9) Select Troubleshoot from the Choose an option screen.

(10) Select Advanced options from the Troubleshoot screen.

(11) Select Windows Startup Settings from the Advanced options screen.

(12) Click Restart.

(13) The system restarts to the Advanced Boot Options screen.

(14) Select Disable Driver Signature Enforcement.

(15) Restart and install the drivers.

UG184 Rev.2.00 Page 7 of 30

Oct 22, 2018

ISL9241EVAL1Z 3. Using the GUI

3. Using the GUI

The ISL9241 SMBus Control Tool Software must be installed to use the evaluation system. Do not connect the

ISL9241EVAL1Z evaluation board to the USB port until installation is complete.

Connect the ISL9241EVAL1Z to a power supply before using the SMBus GUI.

3.1 Setting the USB Connection

Connect the USB cable from the computer’s USB port to connector J10 of the ISL9241EVAL1Z.

3.2 Starting the GUI

To start the GUI, navigate to the Start menu , then select All Programs → Renesas →

ISL9241 SMBus Control Tool.

Figure 6 shows the GUI.

Figure 6. ISL9241 Graphical User Interface

UG184 Rev.2.00 Page 8 of 30

Oct 22, 2018

ISL9241EVAL1Z 3. Using the GUI

3.3 Troubleshooting the GUI

Check the status of the USB interface at the top of the GUI. If the USB communication is OK, the USB Interface

status shows a green check mark, as seen in Figure 6.

If the USB Interface status shows a red X, the computer cannot establish the connection. Complete the following

steps to troubleshoot:

(1) Make sure the driver files for the USB interface are installed correctly. The driver files are in the USB-I2C

Driver folder.

(2) Check the USB cable connections from the ISL9241EVAL1Z to the USB port of the computer.

(3) Try different sequences: plug in the ISL9241EVAL1Z first or start the GUI first.

If the problem continues, the USB driver may not be properly installed; therefore, the ISL9241EVAL1Z is not

recognized. Refer to “Installing the USB Driver” on page 5 for driver installation instructions.

UG184 Rev.2.00 Page 9 of 30

Oct 22, 2018

ISL9241EVAL1Z 4. Functional Description

4. Functional Description

The ISL9241EVAL1Z evaluation board provides all circuits required to evaluate the features of the ISL9241. A

majority of the features of the ISL9241 are available on the ISL9241EVAL1Z, such as adjustable output voltage,

On-the-Go (OTG) mode, Trickle Charging mode for a depleted battery, and system power monitor at Buck, Boost, and

Buck-Boost modes. The charger can be controlled through firmware to operate in Hybrid Power Buck-Boost or Bypass

mode. Refer to AN1994, “ISL9241 Operation Modes” for detailed information about the operation modes.

4.1 Quick Start Guide

The number of battery cell and adapter current limit default values can be configured with a standard 1% 0603

resistor (R23) from the PROG pin to GND. The “PROG PIN PROGRAMMING OPTIONS” table in the ISL9241

datasheet shows the programming options. After the default number of cells in series is set, the default values for

MaxSystemVoltage and MinSystemVoltage are set accordingly. These values can also be changed through the

SMBus control registers, which are implemented with the Renesas GUI shown in Figure 8 on page 12.

The three LEDs indicate the ACOK, PROCHOT, and OTGPG/CMOUT status, respectively. For more details about

the functions of these three pins, refer to the ISL9241 datasheet.

Complete the following steps to evaluate the ISL9241 key functions, including system voltage regulation, input

current limit regulation, Charging mode, trickle Charging mode, and OTG mode. Figure 7 on page 10 shows the

top view of the ISL9241EVAL1Z and highlights the key testing points and connection terminals. For more

information about the ISL9241, including other operation modes, refer to the ISL9241 datasheet and AN1994,

“ISL9241 Operation Modes”.

UG184 Rev.2.00 Page 10 of 30

Oct 22, 2018

ISL9241EVAL1Z 4. Functional Description

Figure 7. ISL9241EVAL1Z Connections

(+) Supply

(-) Supply

USB Port

for SMBus

(+) DMM

(-) DMM

(+) Battery

(-) Battery

BGATELED 1BATGONE

Lead

PH1 PH2

LED 2 LED 3

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