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UG110
Rev 2.0, 23-Jul-2018
ACT2861EVK1-201 Rev B User's Guide
Description
This document describes the characteristic and operation of the Active Semi ACT2861EVK1-201 evaluation kit
(EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data. This EVK
demonstrates the ACT2861QI201 CMI version of the IC. Other ACT2861QIxxx options can be evaluated on this
EVK by replacing the IC and any other necessary components.
Features
The EVK can be used as a standalone board if desired. However, to access the internal registers and to take
full advantage of the IC's capability, the user must connect the EVK kit to a PC with Active Semi's USB-TO-I
C
2
interface dongle and use the GUI software. The EVK provides full access to each converter's input and output
voltage, as well as all the digital control signals. This gives the user the flexibility to configure the EVK to match
their real world system.
Figure 1 – EVK Picture
Innovative Power
TM
TM
ActiveSwitcher
is a trademark of Active-Semi.
1
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Related Manuals for Active-semi ACT2861EVK1-201
Summary of Contents for Active-semi ACT2861EVK1-201
- Page 1 ACT2861EVK1-201 Rev B User’s Guide Description This document describes the characteristic and operation of the Active Semi ACT2861EVK1-201 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data. This EVK demonstrates the ACT2861QI201 CMI version of the IC. Other ACT2861QIxxx options can be evaluated on this EVK by replacing the IC and any other necessary components.
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Page 2: Evk Contents
UG110 Rev 2.0, 23-Jul-2018 EVK Contents The ACT2861EVK1-201 evaluation kit comes with the following items: 1. EVK assembly 2. USB-TO-I2C dongle a. Dongle b. Custom 4-pin connector that connects the USB-TO-I2C dongle to the EVK assembly Required Equipment ACT2861EVK1-201 USB-TO-I2C Dongle Power supply ... -
Page 3: Quick Start
3. Connect the USB-TO-I2C dongle to the EVK J5 connector. Refer to Figure 3 to ensure the correct cable connector polarity. As a guide, use the “Active-Semi” logo on the top of the dongle to ensure the black wire is connected to the Dongle GND pin. -
Page 4: Recommended Operating Conditions
Rev 2.0, 23-Jul-2018 Recommended Operating Conditions The ACT2861EVK1-201 is designed for a 4V-29V input voltage. The maximum operating voltage is determined by the IC’s maximum input voltage rating. The minimum operating voltage is determined by the buck-boost converter’s minimum input voltage. Maximum input and charging currents are determined by resistors and IC’s CMI settings, which can be changed via I C after startup. - Page 5 Refer to the ACT2861 datasheet for programming details. Input Current Limit – The ACT2861EVK1-201 EVK input current limit is set to 3.03A. This is a function of the 10mΩ current sense resister, R6, the 20kΩ RILIM resistor, R15, and the I C Input Current Limit bits, INLIMIT, which are set to 67% by default.
- Page 6 In addition, short current, pre-charge current, termination detection current can also be modified by the ACT2816 GUI. OTG Input Current Limit Configuration - The ACT2861EVK1-201 EVK OTG current limit is set to 6.06A. This is a function of the 10mΩ current sense resister, R21, the 20kΩ ROLIM resistor, R14, and the I C OTG Battery Ilim bits, OTG_BAT_ILIM, which are set to 200% by default.
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Page 7: Test Results
UG110 Rev 2.0, 23-Jul-2018 Additional Programmable Functionality The ACT2861 contains many additional programmable parameters. Refer to the ACT2861 datasheet for additional functionality and default I C register values. Test Results Innovative Power ActiveSwitcher is a trademark of Active-Semi. - Page 8 UG110 Rev 2.0, 23-Jul-2018 Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 9 UG110 Rev 2.0, 23-Jul-2018 Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 10 UG110 Rev 2.0, 23-Jul-2018 Schematic Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 11 UG110 Rev 2.0, 23-Jul-2018 Layout Figure 5 – Layout Top Layer Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 12 UG110 Rev 2.0, 23-Jul-2018 Figure 6 – Layout Layer GND Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 13 UG110 Rev 2.0, 23-Jul-2018 Figure 7 – Layout Layer VCC Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 14 UG110 Rev 2.0, 23-Jul-2018 Figure 8 – Layout Bottom Layer Innovative Power ActiveSwitcher is a trademark of Active-Semi.
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Page 15: Bill Of Materials
UG110 Rev 2.0, 23-Jul-2018 Bill of Materials Table 2. ACT2861EVK1-201 BOM Item Ref Des Description Package Part Number C1, C6, C8, Cap, Ceramic, 22uF, C15, C16, C18, 1206 C3216X5R1V226M160AC 35V, 10%, X7R Wurth El- ELCap, 470uF, 25V 8mmx11mm 860010675020 ektronik Cap, Ceramic, 2.2nF,... - Page 16 Rev 2.0, 23-Jul-2018 TP2, TP3, TP6, TP7, TP8, Test Point, Black, 0.040" Keystone 5000 TP10, TP11, Through Hole, 1mm TP12 4mm×4mm Active ACT2861QI201 ACT2861QI201 Semi PCB, ACT2861EVK1 PCB-0309-02 REVB Shunt, 100mil, Black 60900213421 Innovative Power ActiveSwitcher is a trademark of Active-Semi.
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Page 17: Gui Installation
Mode contain the button text for changing setting for every single bit. Basic Mode The following figure show the GUI in basic mode. This mode allows the user to easily change one or more IC settings. Innovative Power ActiveSwitcher is a trademark of Active-Semi. - Page 18 Note that the far right side of the screen contains a scroll down button to scroll down to additional registers since the Tile Screen can only display up to 8 bytes at once. Innovative Power ActiveSwitcher is a trademark of Active-Semi.
- Page 19 Read: Clicking on this button reads the ACT2861 registers and displays them in the GUI. Note that this reads all registers. Active-Semi recommends reading registers each time the ACT2861 powers-up to acquire the initial register settings. Active-semi also recommends reading registers after making changes to them. Immediately reading the registers after a write confirms the changes were properly stored.