Related Manuals for Flex FAB8020785/B
Summary of Contents for Flex FAB8020785/B
- Page 1 User Guide FAB8020785/B 28701- FAB8020785 Rev. A KEP 91017 28701- KEP 91017 August 2018 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex USB-PMBus Adapter Kit FAB8020785/B User Guide...
- Page 2 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Flex shall have no liability for any error or damage of any kind resulting from the use of this document.
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Page 3: Table Of Contents
USB-PMBus Adapter © Flex © Flex Contents Introduction ..................4 How to contact Flex................4 Information about cautions and warnings ..........4 Product overview ................. 6 Alternate connection cable ..............7 Computer system and software requirements ........8 Connecting the USB-PMBus adapter..........8 Electrical specification ................ -
Page 4: Introduction
(I2C) and/or general-purpose inputs/outputs GPIOs. The bridge converts communication transactions between the USB and PMBus. How to contact Flex For general questions or interest in our products, please contact your local sales representative. Contact details are found on our website: www.flex.com/powermodules... - Page 5 User Guide User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B August 2018 28701- KEP 91017 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex Attention! Observe precautions electrostatic sensitive device By default, the PMBus data and clock lines are pulled up internally to 3.3 V. If an external ones are used, please make sure to pull up to 3.3V only.
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Page 6: Product Overview
User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B 28701- KEP 91017 August 2018 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex Product overview In order to operate this USB interface adapter, the following items are required. Ensure you have received all parts shown below. -
Page 7: Alternate Connection Cable
User Guide User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B August 2018 28701- KEP 91017 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex Alternate connection cable The kit also includes a simple PMBus Cable (RPM 901 391) that can be used in place of the 10-ribbon cable to connect to the PMBus signals (DGND, SCL, and SDA) directly on the customer board. -
Page 8: Computer System And Software Requirements
In the figure below it is shown how to connect the USB-PMbus adapter to, for example, Flex’s POL design board (ROA 128 3836 R2A). The 10-pin ribbon cable is connected to the board. The USB shall be connected to one USB port of your... -
Page 9: Electrical Specification
User Guide User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B August 2018 28701- KEP 91017 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex Electrical specification... - Page 10 User Guide User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B August 2018 28701- KEP 91017 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex The addition of external pull-up resistors between the data/clock lines and the nominal PMBus/I2C voltage is shown in the figure below.
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Page 11: Mechanical Information
User Guide 28701- FAB8020785 Rev. A KEP 91017 FAB8020785/B 28701- KEP 91017 August 2018 August 2018 USB-PMBus Adapter USB-PMBus Adapter © Flex © Flex Mechanical information The pinout of the board connector of the PMBus cable is shown in the figure below. - Page 12 PM-Bus communication speed and the pull- ups for data (SDA) and clock (SCL) lines suitable for the application. If not, modify the PMBus communication speed and the pull-ups accordingly. If this still does not solve the problem, contact your local Flex representative.