BCM6123xD1E5126yzz
Pin Configuration
TOP VIEW
1
2
+VPRI
A
B
+VSEC
A’
B’ –VSEC
C’ +VSEC
D’ –VSEC
TM/SER-OUT
EN
C
D
VAUX/SER-IN
–VPRI
E
6123 ChiP Package
Pin Descriptions
Power Pins
Pin Number
Signal Name
Type
Function
A1
+VPRI
PRIMARY POWER
Positive primary transformer power terminal
Negative primary transformer power terminal
PRIMARY POWER
RETURN
E1
-VPRI
+VSEC
-VSEC
SECONDARY
POWER
A’2, C’2
B’2, D’2
Positive secondary transformer power terminal
Negative secondary transformer power terminal
SECONDARY
POWER RETURN
Analog Control Signal Pins
Pin Number
Signal Name
Type
Function
B1
C1
D1
TM
EN
OUTPUT
INPUT
Temperature Monitor; primary side referenced signals
Enables and disables power supply; primary side referenced signals
Auxilary Voltage Source; primary side referenced signals
VAUX
OUTPUT
PMBus Control Signal Pins
Pin Number
Signal Name
Type
Function
B1
C1
D1
SER-OUT
EN
OUTPUT
INPUT
UART transmit pin; Primary side referenced signals
Enables and disables power supply; Primary side referenced signals
UART receive pin; Primary side referenced signals
SER-IN
INPUT
BCM® Bus Converter
Page 4 of 30
Rev 1.1
01/2017
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