background image

UG-106 

 

 

Rev 1.0, 16-November-2017

 

 
Innovative Power

TM

 

ActiveSwitcher

TM

 is a trademark of Active-Semi. 

 

   

ACT4910EVK1-121 User’s Guide

 

 

Description

 

This document describes the characteristic and operation of the Active Semi ACT4910EVK1-121 evaluation kit 
(EVK).    It  provides  setup  and  operation  instructions,  schematic,  layout,  BOM,  and  test  data.    This  EVK 
demonstrates  the  ACT4910QW121  eFuse  power  management  IC.  Other  ACT4910QWxxx  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-I2C 
interface dongle and use the GUI software. The EVK provides full access to the 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.  Note  that  the  ACT4910EVK1-121  is  specifically  configured  for  the 
ACT4910QW121 IC.  

 

 

Figure 1 – EVK Picture

 

 

Summary of Contents for ACT4910EVK1-121

Page 1: ... 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 I2C interface dongle and use the GUI software The EVK provides full access to the each converter s input and outpu...

Page 2: ...mi 2 Setup Required Equipment ACT4910 EVK USB TO I2C Dongle Power supply 12V 4A for full power operation Oscilloscope 100MHz 2 channels Loads Electronic or resistive 4A minimum current capability Digital Multimeters DMM Windows compatible computer with spare USB port EVK Setup Figure 2 EVK Setup ...

Page 3: ...nnected toward the lower left corner of the Dongle Figure 3 USB TO I2C Dongle Connection EVK Design Parameters The ACT4910EVK1 121 is designed for a 12V input voltage The maximum operating voltage is determined by the IC s maximum input voltage rating The minimum operating voltages are determined by the buck converters minimum input voltage and by the LDOs dropout voltages Maximum currents are det...

Page 4: ... Apply the 12V input voltage and the EVK automatically powers charges the storage capacitors and delivers power to the load No modifications are needed to start evaluating the ACT4910 s many functions such as supplement mode ADC measurements current limiting etc Modifications The EVK is designed to allow the user to immediately start evaluating the ACT4910 functionality After the user becomes fami...

Page 5: ...UG 106 Rev 1 0 16 November 2017 Innovative PowerTM ActiveSwitcherTM is a trademark of Active Semi 5 Test Results ...

Page 6: ...UG 106 Rev 1 0 16 November 2017 Innovative PowerTM ActiveSwitcherTM is a trademark of Active Semi 6 ...

Page 7: ...UG 106 Rev 1 0 16 November 2017 Innovative PowerTM ActiveSwitcherTM is a trademark of Active Semi 7 ...

Page 8: ...1 2 J6 VIO_IN REF R8 2 2K R11 10K R10 2 2K R9 2 2K LED1 GND C8 22μF GND GND nIRQ REF SCL SDA GND GND GND TP7 TP8 REF 1 2 3 4 J4 comp SCL SDA nIRQ GND GND GND GND GND GND GND GND HSB 1 PG_STR 2 PGND 3 BSET 4 REF 5 COMP 6 FB 7 VSS 8 SCL 9 SDA 10 VOUT 11 VOUT 12 VOUT 13 nIRQ 14 ISET 15 SS 16 EN 17 VIN 18 VIN 19 VIN 20 VIN 21 VIN 22 VOUT 23 VOUT 24 VOUT 25 STR 26 SW 27 PGND 28 U1 ACT4910 1 TP9 1 2 J7 ...

Page 9: ...UG 106 Rev 1 0 16 November 2017 Innovative PowerTM ActiveSwitcherTM is a trademark of Active Semi 9 Layout Figure 5 Layout Top Layer Figure 6 Layout Bottom Layer ...

Page 10: ...UG 106 Rev 1 0 16 November 2017 Innovative PowerTM ActiveSwitcherTM is a trademark of Active Semi 10 Figure 7 Layout Power Figure 8 Layout GND ...

Page 11: ...Ceramic 47uF 35V 10 X7R D7343 Kemet 1605S70CB 12 L1 1 Inductor 2 2uH 6A 22mohm SMD Flat Wire High Current 4 1x4 1x3 1mm Wurth Elektronik 74438357022 13 LED1 1 LED Bright Green 603 Wurth Elektronik 150060VS75000 14 R1 1 Res 91kΩ 1 603 Std Std 15 R2 1 Res 11 5kΩ 1 603 Std Std 16 R3 1 Res 360kΩ 1 603 Std Std 17 R4 1 Res 24kΩ 1 603 Std Std 18 R5 1 Res 75kΩ 1 603 Std Std 19 R6 1 Res 12kΩ 1 603 Std Std ...

Page 12: ...12 GUI Installation 1 Contact Active Semi for the GUI files and save them on your computer 2 Plug the USB TO I2C dongle into a free USB port 3 Follow the instructions in the How to install driver for dongle folder Figure 9 Dongle Driver 4 Double click on the ACT4910 GUI exe to start the ACT4910 GUI ...

Page 13: ...ns 2 setting modes Basic Mode and Advanced Mode In Basic Mode screen it displays basic user programmable configuration options are programmed using the drop down boxes or check boxes Advanced 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 Figure 10 G...

Page 14: ...ame button 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 Figure 11 GUI Advanced Mode Button Descriptions Read Clicking on this button reads the ACT4910 registers and displays them in the GUI Note that this reads all registers Active Semi recommends reading registers each t...

Page 15: ...tive PowerTM ActiveSwitcherTM is a trademark of Active Semi 15 Write Clicking on this button writes the GUI settings to the ACT4910 s registers All registers are written regardless of whether or not they were changed Figure 13 Write Button ...

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