Datasheet

LED COLOR DESCRIPTION
D2 Red Fault: A shutdown fault occurred for a global primary group.
D3 Red Fault 2: A shutdown fault occurred for a global secondary group.
D4 Red
WatchdogOutput(WDO):Watchdogtimeouthasoccurred.
D5 Green
Power Good 2 (PG2): All enabled channels for the secondary group are above their associ-
ated power-good on value.
D6 Green
Power Good (PG): All enabled channels for the primary group are above their associated
power-good on value.
D7 Red Alert: A fault has occurred.
D8 Red Alarm1: Configurable on the Sequencing tab (Figure 1).
D9 Red Alarm0: Configurable on the Sequencing tab (Figure 1).
DA Red VOUT0: Channel 0 is on.
DB Red VOUT1: Channel 1 is on.
DC Red VOUT2: Channel 2 is on.
DD Red VOUT3: Channel 3 is on.
D20
(Power)
Red USB Power Fault: A fault occurred due to overvoltage limit, current limit, or thermal limit.
Green USB Power: USB power supply is on.
D21
(Com)
Red
Communication: After the software has initialized the hardware, the LED flashes red when an
I
2
C command is received.
Green Initialized: Hardware has been initialized by software.
MAX34460 Evaluation Kit
Evaluates: MAX34460
14Maxim Integrated
Detailed Description of Hardware
User-Supplied I
2
C Interface
To communicate with the MAX34460 using a user-
supplied I
2
C interface, first remove the J23 jumper to
disconnect the USB I
2
C dongle. If the dongle is no longer
desired, it can be separated from the EV kit by snapping
the PCB at the scored line. Connect test points SDA,
SCL, GND, and 5V to the off-board I
2
C interface. The I
2
C
interface should operate at 3.3V.
User-Supplied Power Supplies
To disconnect the on-board power supplies, turn the
DAC (S4), RS (S5), and PSEN (S6) DIP switches off.
The power supplies’ GND should be connected to the
banana jack GND. Connect the desired PSEN pins to
the enable pin on the power supply, and the RS pins
to a voltage-divider on the output of the power supply.
The voltage-divider is only required if the output voltage
is greater than 1.8V. For closed-loop margining with the
on-board DS4424, connect DAC0–DAC3 to the feedback
of the power supply channels 0–3.
User-Supplied DS4424
To margin with a user-supplied DS4424, disconnect the
on-board current DAC by switching the DAC (S4) DIP
switch to off. Then connect MSDA, MSCL, and GND on J3
to the external current DAC. The slave address for the user-
supplied DS4424 should be 60h for power-supply chan-
nels4–7orA0hforchannels8–11.Theon-boardDS4424
has slave address 20h, which margins channels 0–3.
User-Supplied DS75LV
To use an off-board digital temperature sensor, connect
MSDA,MSCL,andGNDonJ3totheDS75LV.Theslave
address for the user-supplied DS75LV should be 92h,
94h,or96h.Theon-boardDS75LVhasslaveaddress90h.
Troubleshooting
All efforts were made to ensure that each kit works on the
first try, right out of the box. In the rare occasion that a
problem is suspected, see Table 5 to help troubleshoot
the issue.
Table 2. Description of LEDs