kinetic technologies KTS1697A 7ARMS VBUS Current Sink Protection Load Switch User Manual

kinetic technologies KTS1697A 7ARMS VBUS Current Sink Protection Load

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Brief Description

The KTS1697A Evaluation (EVAL) Kit is used to demonstrate and evaluate the KTS1697A functionality, performance, and PCB layout. The kit includes a fully assembled and tested PCB with the KTS1697A IC installed, two pairs of high- current XT30-to-Banana power cables, and a printed copy of the Quick Start Guide (also contained within this document).

Ordering Information

3D CAD Image

EVAL Kit Physical Contents

QR Links for Documents

• https://www.kinet-ic.com/KTS1697A/.
• https://www.kinet-ic.com/kts1697aeoab-mmev01/.

User-Supplied Equipment

Required Equipment

1. Bench Power Supply for VIN – 5V/9V/15V/20V and 0.5A/1.5A/3A/5A/7A, as needed for the intended application. For testing over-voltage protection and withstand voltage, a 29V adjustable bench power supply is preferred.
2. Digital Multimeter – one or more, used to measure input/output voltages and currents.

Optional Equipment

1. Bench Power Supply for VIO – 1.5V to 5V, low current. Needed for shutdown mode (̅E̅̅N̅ = H) and fault monitoring (̅A̅C̅̅O̅̅K̅ pull-up voltage).
2. Oscilloscope – for dynamic testing of voltages (and currents with a current probe, if available).
3. Load – either an eLoad, power resistors, or an actual system load.
4. Additional Digital Multimeters

Recommended Operating Conditions

3 to 23

| V V
VIO| VIO Operating Voltage| 1.5 to 5.5| V
IOUT| Output Load Current| 0 to 7| A

Jumper Descriptions

P1

| ̅E̅N̅| Active-Low Enable Input

H: Shutdown Mode – switch disabled

L: Enable Mode – normal switch operation

| ****

L

Quick Start Procedures

1. Set Jumpers to default: ̅̅EN̅̅ = L
2. Connect one pair of XT30-to-Banana power cables to the XT30 connector at VIN and GND (right edge of EVAL Kit).
3. 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 banana ends of the XT30-to-Banana power cables to the VIN bench supply.
4. Turn on the VIN bench supply and very slowly ramp its voltage to an appropriate voltage, such as 5, 9, 12, 15, or 20V. 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.
5. With valid VIN voltage, use a digital multimeter to check the output voltage between the KVOUT and GND terminals on the EVAL Kit. It should be nearly the same as the input voltage.
6. Use a digital multimeter to check the “ideal diode” droop regulation voltage between the KVIN and KVOUT terminals on the EVAL Kit. At no-load and light-load conditions, it should be close to 20mV.
7. Use a digital multimeter to check the no-load supply current at VIN. Consult the KTS1697A datasheet for the expected current range at the VIN voltage condition in use. For conditions of VIN = 5.0V, ̅̅EN̅̅ = L, and no-load, it should be close to 180A.

Typical Test Setup Diagram

As an example, use the following test setup to measure items 6 and 7 in the Quick Start Procedures.

Electrical Schematic

Bill of Materials (BOM)

Printed Circuit Board PCB

Additional Test Procedures

1. Logic Pins Testing:
   • Before connecting the EVAL Kit to the VIO 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 VIO bench supply to VIO and GND terminals on the EVAL Kit (with user-supplied banana-to-clip leads).
   • Turn on the VIO bench supply and very slowly ramp its voltage to an appropriate voltage, such as 1.8, 3.3, or 5V. While ramping VIO slowly, use the bench supply’s output current indication (or a digital multimeter) to monitor the VIO current. If the current becomes high, reduce the VIO voltage quickly to prevent damage. Then inspect the setup for any wiring errors.
   • With valid VIO and VIN voltages, check the EN and ̅AC̅̅̅̅OK̅̅ functionality. Check the shutdown supply current at VIN with EN̅̅ = H. With ̅̅EN̅̅ = L, check the ̅AC̅̅̅̅OK̅̅ flag pulls high to VIO when VIN < 2.5V and when VIN > 24V.
2. Testing with Load:
   • Use the second XT30-to-Banana power cable pair to apply loads from VOUT to GND.
   • Under heavy-load conditions, use caution. The KTS1697A IC may become hot; avoid skin contact.
   • Use multimeters and an oscilloscope to make DC and transient measurements as desired.

Setting OVLO
By default, the EVAL Kit uses the internal 23V setting for the Over-Voltage Protection (OVP) threshold. The OVLO pin and associated resistive voltage divider (R2, R3) are used to externally set the over-voltage threshold in the range of 4V to 23V. As shipped, R2 is not populated and R3 is populated with a 1k pull-down so that OVLO is 0V and the KTS1697A uses the internal 23V setting.

To set a different OVP threshold using the OVLO pin, populate R2. See the KTS1697A datasheet to calculate the necessary value of resistance.

Adding Additional Input Capacitance
The CIN input capacitance of the EVAL Kit is 10uF by design. 10uF is the maximum allowed by USB standards on the VBUS pin of the USB connector. However, for non-standard applications, the C2 footprint (not populated) is available to add additional input capacitance.

Evaluating Other ICs
This EVAL Kit may optionally be used to evaluate the similar KTS1696A, KTS1696B, and KTS1697B VBUS current-sink protection load switches. Before ordering samples of these devices, please confirm the capability to reflow and exchange WLCSP devices.

Troubleshooting

supply. ̅A̅C̅̅O̅K̅ has an Absolute Maximum Rating of 6V.

̅E̅N̅ = H does not disable the switch.| VIO supply is off or not connected.| Connect and enable a VIO pull-up supply. Optionally, remove the jumper on P1 and connect ̅E̅N̅ (at pin 2 of P1) to VIN with a clip-to-clip lead. ̅E̅N̅ has

an Absolute Maximum Rating of 29V.

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 the 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 service 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. The 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, respiratory, 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 a statement.

www.kinet-ic.com.

References

• Kinetic Technologies - Analog & Mixed-Signal Semiconductors

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