User guide
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V 1.0.1
2021-01-27
REF-AIRCON-C302A-IM564 user guide
Air conditioner application reference design kits
System design
Pin
Label
Function
5
Exhaust
To exhaust temperature sensing NTC
Table 8 provides the pin assignments of EEPROM program interface:
Table 8
J14 – External EEPROM program port
PIN
Label
Function
1
+5 V
On-board 5 V supply
2
GND
Ground
3
SCL
Clock wire for I2C bus
4
SDA
Data wire for I2C bus
5
WC
Write protection for EEPROM
3.7
Test points
Table 9 provides the assignments of the on-board test points.
Table 9
Test points on REF-AIRCON-C302A-IM564
Pin
Name
Functions & net label describe
TP1
DC+
DC+ test point
TP 2
DC-
Power GND test point (DC-)
TP 3
IPFC
PFC current sensing (output for U6 OPA pin1)
TP 4
PFC_PWM PFC PWM (to pin 6 of U5)
TP 5
Mtr_GK
Output of OCP circuit (output from IM564, pin 14 VFO)
TP 6
IFB
Motor current sensing (to IMC302A’s pin 18)
TP 7
GND
Ground test point for signals ground
TP 8
ACL
AC voltage measure point (L)
TP 9
ACN
AC voltage measure point (N)
