User Guide
HR1203 Evaluation Kit (EVKT-1203)
HR1203 Evaluation Kit User Guide Rev 1.0
MonolithicPower.com
10
5/7/2019
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Figure 12: Main Interface in Online Mode
⚠️
Do not connect AC input in offline mode.
⚠️
Use the USB isolator between the communication interface and USB port in online mode.
⚠️
Keep AC input in connection in online mode.
⚠️
Do not plug or unplug any device in online mode, to prevent damaging the EVB.
⚠️
Reset the communication interface
and EVB every time before you restart the GUI, i.e. detach
the
communication interface from
the
USB
port and make sure the VCCs for both the communication
interface and EVB are fully discharged. In online mode, the bus bulk capacitor should be discharged
below 10V to prevent false triggering before being connected again
(1)
.
3. If connection is successful, proceed with Step 3. Otherwise, check the connections between the EVB,
communication interface, and PC. Re-plug the USB cable and the ribbon cable into the computer.
Then restart the GUI.
Parameters of the digital PFC part of the IC can be configured by selecting various menu items on
the GUI interface. Users can also import their own design parameters.
Most GUI panels are the same in offline mode and online mode. These panels include the following:
A. Circuit Panel
This panel configures EVB inputs, outputs and several key design parameters (see Figure 11).
B. Design-Basic Panel
This panel controls the working state of the PFC and LLC part separately and configures some
basic parameters (see Figure 13).
