Datasheet

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5.3 List of Connectors
Table 2. Connector definition
CONNECTORS PINS NAME DESCRIPTION
J1 1 VIN Input voltage
2 GND Input voltage return
J2 1 thru 4 GND USB interface adapter - unconnected
5 USB interface adapter – 3.3V 100ma supply (optional)
6 USB interface adapter – ground
7 PMBus_CNTRL USB interface adapter – control line
8 PMBus_ALERT USB interface adapter – alert line
9 PMBus_CLK USB interface adapter – clock line
10 PMBus_DATA USB interface adapter – data line
J3 1 GPIO-1 General purpose input/output – UCD9224 pin 22 (SEQ-2)
2 PGOOD Power good – all rails (UCD9224 Pin 26)
3 AGND Analog ground reference point for external signals
4 VTRACK Input reference for external voltage tracking
J4 2-Jan ADDR-1 Jumper location to modify ADDR-1 setting
4-Mar ADDR-0 Jumper location to modify ADDR-0 setting
J5 1 +V
OUT2
Output voltage 2
2 -V
OUT2
Output voltage 2 return
J6 1 +V
OUT1
Output voltage 1
2 -V
OUT1
Output voltage 1 return
J7 (optional) 1 REG 3.3 V from onboard regulator U1
(1)
2 3.3 V 3.3-V supply for UCD9224 controller
(1)
3 EXT 3.3 V from J2-5 (PMBus)
J8 1 CNTRL Manual control line access
2 AGND Ground
J9 (optional) 1 GND Input voltage return
(2)
2 Unconnected
3/3 A VIN Input voltage
(2)
(1)
J7 is not populated by default and a shunt trace connects Pins 1 and 2 on the EVM.
(2)
J9 (DC power jack) replaces J1 to allow use of a standard 5.5mm/2.5mm power adapter plug.
11
SLUU443–March 2011 UCD9224EVM-464 Digitally Controlled Dual-Rail POL
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