UG130. ACT88430EVK1-101User s Guide. Description. Features. Rev 1.0, 22-Oct-2018

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1 ACT88430EVK-0User s Guide Description This document describes the characteristics and operation of the Active Semi ACT88430EVK-0 evaluation kit (EVK). It provides setup and operation instructions, schematic, layout, BOM, and test data. This EVK demonstrates the ACT88430QJ0 ActivePMU power management IC. Other ACT88430QJxxx 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-IC 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 ACT88430EVK-0 is specifically configured for the ACT88430QJ0. Figure EVK Picture

2 EVK Contents The ACT88430EVK-0 evaluation kit comes with the following items:. EVK assembly. USB-TO-IC dongle a. Dongle b. Custom 4-pin connector that connects the USB-TO-IC dongle to the EVK assembly Required Equipment ACT88430 EVK USB-TO-IC Dongle Power supply 4A for full power operation Oscilloscope >00MHz, > channels Loads Electronic or resistive. 4.0A minimum current capability. Digital Multimeters (DMM) Windows compatible computer with spare USB port. Hardware Setup Figure EVK Setup

3 Quick Start Hardware Setup. Decide which voltage will power VIO_IN. Active Semi recommends powering VIO_IN from the VIN_B input. Install a shorting jumper between J- and J-to power VIO_IN from the VIN_B input voltage, OR connect a shorting jumper betweenj- and J-3 to power VIO_IN from the OUT_LDOoutput voltage.. Connect a lab supply between J5- and J5- to power VIN_B. 3. Connect a shorting jumper to J0 to power the LDO input voltages from the main input supply (VIN_B). Connect a lab supply between J0- and to power the LDO input voltages from a different input voltage. 4. Note that the typical setup is to apply the same 3.3V input voltage to all inputs. Using different input voltage sources requires careful consideration of startup sequencing. 5. Connect an appropriate load to each power supply output. 6. Turn on the lab supplies. 7. The outputs turn on automatically when voltage is applied to VIN_B. 8. If you do not want the outputs to automatically startup, place a shorting jumper on the PWREN connector (J) and short the nreset_aux pin (J9) to ground. Then remove the PWREN shorting jumper to enable Buck4, LDO//3. Remove the nreset_aux short to enable Buck//3. 3

4 GUI Setup (optional). Refer to the end of this document for detailed instructions to install the ACT88430 GUI.. Connect the USB-TO-IC dongle to the computer via a USB cable. 3. Connect the USB-TO-IC dongle to the EVK J5 connector. Refer to Figure 4 to ensure the correct polarity of the connection. As a guide, use the Active-Semi logo on the top of the dongle so the black wire is connected to the Dongle pin. EVK Design Parameters Figure 4 USB-TO-IC Dongle Connection The ACT88430EVK-0 is designed for a 3.3V 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 determined by the IC s CMI settings, which can be changed via IC after startup. Table. EVK Design Parameters Parameter Description Min Typ Max Unit VIN_B All buck input voltages V VIN_LDO LDO input voltage V VIN_LDO3 LDO3 input voltage V IB_max Maximum Buck load current 4.0 A IB_max Maximum Buck load current.5 A IB3_max Maximum Buck 3 load current.5 A ILDO_max Maximum LDO load current 0.8 A ILDO_max Maximum LDO load current 0. A ILDO3_max Maximum LDO 3 load current 0. A 4

5 EVK Operation Turn On Apply the 3.3V input voltage. Pull PWREN high to enable Buck4, LDO//3. Pull RESET_AUX high to enable Buck//3. All outputs automatically turn on with the programmed startup sequence. Sleep Mode After all outputs are turned on, enter Sleep Mode by pulling nreset_aux low. In Sleep Mode,Buck//3 outputs turn off and Buck4,LDO//3 stay on. Test Results 5

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10 0 Schematic Figure 5 ACT88430EVK-0 Schematic 47uF C4 uf C 0uF C5 0uF C8 0uF C L uh L uh L3 uh L4 uh uf C uf C3 uf C6 DNI C7 uf C9 DNI C0 uf C DNI C3 VIN_LDO uf C4 uf C6 uf C7 uf C5 uf C8 uf C9 VIO_IN R4 00K R5 00K R DNI R3 0R R4 0R R5 0R R 0R R3 00K R 00K R0 00K R8.7K VIO_IN OUT_B OUT_B OUT_B3 OUT_B4 OUT_LDO OUT_LDO OUT_LDO3 POK nreset_aux nreset_aux nreset PG EXT_EN 0uF C0 VIN_B GPIO EXT_PG R 00K VIN_B 37 VIN_B 38 SW_B 39 SW_B 40 FB_B 35 VIN_B 7 SW_B 6 FB_B 8 VIN_B3 5 SW_B3 6 FB_B3 4 VIN_B4 3 SW_B4 3 FB_B4 9 VIN_LDO 0 OUT_LDO 9 VIN_LDO3 OUT_LDO OUT_LDO3 3 VIO_IN 0 PWREN 7 EXT_PG 9 GPIO 33 VIN 36 MODE 30 A 6 IRQ POK 4 nreset_aux nreset_aux nreset 4 PG 34 EXT_EN 8 SCL 3 SDA 5 P P 3 P 5 P3 7 P4 8 U ACT88430 R6 00K R8 00K R7 00K VIN_B SW_B SW_B SW_B3 SW_B4 FB_B FB_B FB_B3 FB_B4 PWREN J9 SCL R9 00K R6 DNI R7.7K DNI C nirq SDA VIN_B J5 3.5mm J 3.5mm J 3.5mm J3 3.5mm J4 3.5mm J6.54 J7.54 J8.54 VIN_B 3 J.54 OUT_LDO J.54 J3.54 J4.54 SW SW SW3 SW4 TP3 TP4 TP6 TP8 TP0 TP5 TP7 TP9 TP TP TP Active-Semi FID MAN,Fiducial FID MAN,Fiducial FID3 MAN,Fiducial J J5.54 J6.54 nirq

11 Layout Figure 6 Layout Top Assembly

12 Figure 7 Layout Top Layer

13 Figure 8 Layout Layer 3

14 Figure 9 Layout Layer 3 4

15 Figure 0 Layout Bottom Layer 5

16 Bill of Materials Table - BOM Item Ref Des QTY Description Package MFR Part Number C,C,C3,C6,C9,C 6 5 C4 0 C5, C8, C,C0 4 Cap, Ceramic, uf, 6.3V, 0%, X5R 0603 Samsung CL0A6MQ8NRNC Cap, Aluminium Electrolytic, 470uF, 0V 6.3xmm Capxon KF47M00E0A Cap, Ceramic, 0uF, 0V, 0%, X5R 0603 Samsung CL0A06KP8NNNC 3 C7, C0, C3, C 0 Cap, Ceramic, uf, 6.3V, 0%, X5R, DIPN 0603 Samsung CL0A6MQ8NRNC 4 C4, C5, C6, C7, C8, C9 6 Cap, Ceramic, uf, 5V, 0%, X7R 0603 Yageo std 6 L,L, L3, L4 4 Inductor, uh, 7.A, mohm, SMD 4. x 4. x.mm Wurth Elektronik R 0 Res, 0Ω, 5% 0603 Yageo std 8 R, R3, R4, R5 4 Res, 0Ω, % 0603 Yageo std 9 R6, R7, R8, R0, R, R, R3, R4, R5 9 Res, 00kΩ, 5% 0603 Yageo std 0 R9 0 Res, 00kΩ, 5% 0603 Yageo std R6 Res, 0Ω, 5% 0603 Yageo std R7,R8 Res,.7kΩ, 5% 0603 Yageo std 3 TP, TP3, TP5, TP7, TP9, TP 6 Test Point, Red 0.063" Keystone TP, TP4, TP6, TP8, TP0 5 Test Point, BLK 0.063" Keystone J, J, J3, J4, J5 5 CON, Screw Terminal, 3.50, P, KF , P Wurth Elektronik J6, J7, J8, J0, J, J3, J4 7 Header, pin, 00mil 54-p Wurth Elektronik J9 Header, 6 pin, 00mil 54-6p Wurth Elektronik J, J5 Header, 3 pin, 00mil 54-3p Wurth Elektronik J6 Header, pin, 00mil 54-p Wurth Elektronik U IC, ACT88430, Integrated PMU QFN40 Active-semi ACT88430QJ0 -- Shorting Jumper n/a Wurth Elektronik PCB n/a n/a PCB

17 GUI Installation. You can find the ACT88430 GUI files on the Active Semi website. Save them on your computer.. Plug the USB-TO-IC dongle into a free USB port. 3. Follow the instructions in the How to install driver for dongle folder. Figure Dongle Driver 4. Double click on the Active GUI.exe to start the ACT88430 GUI. 7

18 GUI Overview The GUI has basic function buttons allocated in top-left of the Tool Bar which are Read and Write IC. The GUI contains 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 GUI Basic Mode 8

19 Advanced Mode Click the Advanced Mode button in the left of the GUI screen to see all available user programmable options. With Advanced Mode, additional user programmable features can be selected using the button text. In the left side of the Advanced Mode Screen, click on the Tiles Selector to display the register to view or change. Then change a register one bit at a time by clicking on the desired bit. The value of the bit is display right next to the bit-name 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 3 GUI Advanced Mode Button Descriptions Read: Clicking on this button reads the ACT88430 registers and displays them in the GUI. Note that this reads all registers. Active-Semi recommends reading registers each time the ACT88430 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. This also updates the SYSTEM STATUS box to ensure that one of the changes did not generate a fault condition. 9

20 Figure 4 Read Button Write: Clicking on this button writes the GUI settings to the ACT88430 s registers. All registers are written, regardless of whether or not they were changed. Figure 5 Write Button Dongle Connection Status: The GUI also contains a dongle is connected status which indicates that Active- Semi s USB-TO-IC dongle is connected to the USB port of the driver installed. The figure below shows the two possible indication status graphics. Dongle Connected Dongle Disconnected Figure 6 Dongle Connection Status 0