Kinetic technologies KTB8331 2.4MHz Low-Voltage I2C Programmable Buck Regulator Instruction Manual

Kinetic Technologies KTB8331 2.4MHz Low-Voltage I2C Programmable Buck

Regulator Instruction

Product Information

Product Name: KTB8331 EVAL Kit
Part Number: KTB8331DEDAA-MMEV02
Description: The KTB8331 EVAL Kit is a precision adaptive-on-time (AOT) buck switching regulator with class-leading accuracy, transient response, efficiency, and solution size optimized for mobile and non-mobile applications. It includes a fully assembled and tested KTB8331 EVAL board, I2C Adaptor, connecting cable, and a printed copy of the Quick Start Guide.
IC Package: WLCSP-15

Product Usage Instructions

1. Install the GUI file from the EVAL Kit LandingPage.
2. Check the Jumpers for default settings.
3. Connect one pair of power cables to the VIN and GND connectors of the EVAL Kit.
4. Before connecting the EVAL Kit to the VIN bench supply, turn on the supply and adjust the voltage as close to the recommended operating conditions:
   • VIN: -0.3 to 6V
   • VIO: 2.5 to 5.5V
   • IOUT: 0 to 3A
5. Refer to the KTB8331 datasheet (page 4) to program the IC using the I2C pins. The 7-bit I2C Slave Address for different part numbers can be found in the table provided.
6. Follow the Typical Test Setup Diagram to measure input/output using a bench supply and a current meter.

3A, 2.4MHz, Low-Voltage, I2C Programmable Buck Regulator

Brief Description

This Manual describes the detailed operation of the KTB8331 evaluation board. KTB8331 is a precision adaptiveon-time (AOT) buck switching regulator with class-leading accuracy, transient response, efficiency, and solution
size optimized for mobile and non-mobile application. The KTB8331 Evaluation (EVAL) board is used to  demonstrate the KTB8331 Buck regulator detailed functionality, performance, and the PCB layout. The kit includes a fully assembled and tested KTB8331 EVAL board, I 2C Adaptor, connecting cable, and a printed copy of the Quick Start Guide.

Ordering Information

3D CAD Image

EVAL Kit Physical Contents

QR Links for Documents

• https://wmv.kinet-ic.com/ktb8331/
• https://www.kinet-ic.com/ktb8331dedaa-mmev02/

User-Supplied Equipment

Required Equipment

1. Bench Power Supply for VIN – 5V/9V and 3A as needed for the intended application.
2. Digital Multimeter – used to measure input/output voltages and currents.
3. Load – either power resistors, an E-Load, or an actual system load.

Optional Equipment

1. Oscilloscope and Voltage Probes – for dynamic testing, measurements, and observe input/output voltages and currents waveforms.
2. Additional Digital Multimeters

Recommended Operating Conditions

Jumper Descriptions

Quick Start Procedures

1. Install GUI file located on EVAL Kit Landing page (https://www.kinet-ic.com/ktb8331dedaa-mmev02/).
2. Check the Jumpers for default setting.
3. Connect one pair of power cables to the connector of EVAL Kit at VIN and GND.
4. Before connecting the EVAL Kit to the VIN bench supply, turn on the supply and adjust the voltage as close to 0V as possible. Then turn off the supply. While off, connect the power cables ends to the VIN bench supply.
5. Turn on the VIN bench supply and very slowly ramp its voltage to an appropriate voltage, such as 3.6V. While ramping VIN slowly, use the bench supply’s output current indication (or a digital multimeter) to monitor the VIN current. If the current becomes high, reduce the VIN voltage quickly to prevent damage. Then inspect the setup for any wiring errors.
6. To hardware shutdown the buck regulator, simply use a jumper at P2 to connect EN to GND.
7. Connect a voltage meter to the output KVOUT and KGND test pins, it should measure the voltage of the buck regulator, which is specified on Page 4 of the datasheet.

Graphical User Interface (GUI)

• Download and install GUI software located on EVAL Kit Page (https://www.kinet-ic.com/ktb8331dedaa-mmev02/).
• After installing software, the interface will appear with the status message “USB Device Attached” at the bottom left side of the window.
• If the displayed message is “USB Device Detached”, make sure the computer is properly connected to the board.

Additional Test Procedures to Program KTB8331 Using I 2C Pins

1. Take out P1 and P2 connectors.
2. Connect SDA, SCL and GND from the USB Adapter (Adafruit MCP2221A) to connector Logic Pins CN1.
3. Connect the USB end of the Adapter to the USB port of the computer.
4. Connect a DC power supply between the EVB test points VIN and GND.
5. With the power supply output turned off, configure the voltage to 3.6V.
6. Connect a voltage meter between the KVOUT and KGND.
7. Turn on the power supply output.
8. Start the “KTB8330/1 Control Panel” GUI program on the computer.
9. Verify that the USB Adapter has been detected in the GUI.
10. In order to establish the I2C communication, you need to type in the corresponding slave address for the IC under test. Please check KTB8331 datasheet (page 4) for the pre-defined address. Some of them can be found in the table below:

Typical Test Setup Diagram

As an example, use the following test setup to measure input/output in the Quick Start Procedures

Electrical Schematic

Bill of Materials (BOM)

Printed Circuit Board (PCB)

Buck Regulator Efficiency Measurement

Use a voltage meter to probe EVB test pins KVIN and KGND to measure input voltage, and KVOUT and KGND to measure output voltage. Also, connect current meter in series to input voltage source and output load.
The efficiency can be determined using equation:

Important Notices

Legal notice
Copyright © Kinetic Technologies. Other names, brands and trademarks are the property of others.
Kinetic Technologies assumes no responsibility or liability for information contained in this document. Kinetic Technologies reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or services without notice. The information contained herein is believed to be accurate and reliable at the time of printing.

Reference design policy
This document is provided as a design reference and Kinetic Technologies assumes no responsibility or liability for the information contained in this document. Kinetic Technologies reserves the right to make corrections, modifications, enhancements, improvements, and other changes to this reference design documentation without notice. Reference designs are created using Kinetic Technologies’ published specifications as well as the published specifications of other device manufacturers. This information may not be current at the time the reference design is built. Kinetic Technologies and/or its licensors do not warrant the accuracy or completeness of the specifications or any information contained therein. Kinetic Technologies does not warrant that the designs are production worthy. Customer should completely validate and test the design implementation to confirm the system functionality for the end use application. Kinetic Technologies provides its customers with limited product warranties, according to the standard Kinetic Technologies terms and conditions.
For the most current product information visit us at www.kinet- ic.com

Life support policy
LIFE SUPPORT: KINETIC TECHNOLOGIES’ PRODUCTS ARE NOT DESIGNED, INTENDED, OR AUTHORIZED FOR USE AS COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. NO WARRANTY, EXPRESS OR IMPLIED, IS MADE FOR THIS USE. AUTHORIZATION FOR SUCH USE SHALL NOT BE GIVEN BY KINETIC TECHNOLOGIES, AND THE PRODUCTS SHALL NOT BE USED IN SUCH DEVICES OR SYSTEMS, EXCEPT UPON THE WRITTEN APPROVAL OF THE PRESIDENT OF KINETIC TECHNOLOGIES FOLLOWING A DETERMINATION BY KINETIC TECHNOLOGIES THAT SUCH USE IS FEASIBLE. SUCH APPROVAL MAY BE WITHHELD FOR ANY OR NO REASON.
“Life support devices or systems” are devices or systems which (1) are intended for surgical implant into the human body, (2) support or sustain human life, or (3) monitor critical bodily functions including, but not limited to, cardiac, respirator,
and neurological functions, and whose failure to perform can be reasonably expected to result in a significant bodily injury to the user. A “critical component” is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

SUBSTANCE COMPLIANCE
Kinetic Technologies IC products are compliant with RoHS, formally known as Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical
and electronic equipment. However, this evaluation kit does not fall within the scope of the EU directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and may not meet the requirements  of these or related directives. To the best of our knowledge the information is true and correct as of the date of the original publication of the information. Kinetic Technologies bears no responsibility to update such statement.

References

• Kinetic Technologies - Analog & Mixed-Signal Semiconductors

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