78M6612SP-EVM-1 Maxim Integrated Products, 78M6612SP-EVM-1 Datasheet - Page 10

• Manufacturer Part Number: 78M6612SP-EVM-1
• Description: Power Management Modules & Development Tools 78M6612 Eval Kit Phase EV Board
• Manufacturer: Maxim Integrated Products

Specifications of 78M6612SP-EVM-1

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

78M6612 Split Phase Evaluation Board User Manual
The 78M6612 Split Phase Evaluation Board is preconfigured to measure the Load currents present on
Line 1 and Line 2 using two current transformers (CT). Alternatively, the board has provisions the replace
the Line 1 CT with a current sensing shunt in series with the Neutral wire. Two resistors (R18 and R43)
provide the sensor selection. The following table provides the resistor population options for selecting the
CT verses the shunt.
Presently the firmware only supports the CT–Line1 configuration.
10
Host PC
Figure 4: 78M6612 Split Phase Evaluation Board Application Diagram
USB
Sensor Configuration
Table 2: Line 1 vs. Neutral Current Sensing Configuration
Shunt - Neutral
CT – Line 1
Controller
USB
Switcher
12VDC
ACDC
78M6612 SP Eval Board
UART
No Component
3V3 Reg
Install 750Ω
10x DIOs
R18
6612
I2C
No Component
Voltage
Voltage
Divider
Divider
Install 750Ω
AC Load Under Test
Current
Shunt
R43
Split Phase
Split Phase
AC Source
Relay
Relay
UM_6612_044
Rev. 1.0