Active-semi ACT4910EVK1-121 Manual do utilizador - Página 3

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Hardware Setup

1. If using I2C, ensure that a shorting jumper is placed across J6 to provide a pullup voltage.
2. Connect a lab supply to J1.
3. Connect an appropriate load to J2.
GUI Setup (optional)
1. Refer to the end of this document for detailed instructions to install the ACT4910 GUI.
2. Connect the USB-TO-I2C dongle to the computer via a USB cable.
3. Connect the USB-TO-I2C dongle to the EVK J4 connector. Refer to Figure 3 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 toward the lower left corner of the Dongle.
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 determined by the IC's CMI
settings, which can be changed via I2C after startup.
Parameter
Description
VIN
eFuse input voltage
I
Load current
OUT
I
eFuse current limit
CL
V
Storage voltage
STR
Input voltage falling threshold to start supplement mode
EN_UV
Buck output voltage in supplement mode
VBuck
T
Softstart time
softstart
T
Supplement mode holdup time
holdup
Innovative Power
TM
ActiveSwitcher
TM
is a trademark of Active-Semi.
Figure 3 – USB-TO-I2C Dongle Connection
Table 1. EVK Design Parameters
3
UG-106
Rev 1.0, 16-November-2017
Min
Typ
Max
Unit
10.8
12.0
13.6
V
2.5
A
3.5
A
28
V
10
10.7
20
ms
3
ms