MAX34461EVKIT# Maxim Integrated, MAX34461EVKIT# Datasheet - Page 27

• Manufacturer Part Number: MAX34461EVKIT#
• Description: Power Management IC Development Tools MAX34461 Eval Kit
• Manufacturer: Maxim Integrated
• Type: Voltage Detectorsr

Specifications of MAX34461EVKIT#

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX34461
• Input Voltage: 3 V to 3.6 V
• Output Voltage: 3 V to 3.6 V
• Interface Type: USB
• Part # Aliases: 90-34461#EVK

timeslot 2 begins. The power supplies can be sequenced
on in any order. Since multiple power supplies can be
assigned to a single timeslot, not all timeslots may be
needed. However, timeslot assignment must be sequen-
tial.
local channels can be assigned to any timeslot. After all
enabled supplies are turned on and above their respec-
tive power-good-on levels, the PG output transitions
high. The PG output transition can be delayed with the
MFR_PG_DELAY command. When either the CONTROL
pin goes inactive or the OPERATION command is
received (or the FAULT pin goes low for
nels), the power supplies are sequenced off. The order
in which the supplies are disabled is determined with the
TOFF_DELAY configuration. Alternatively, all the power
supplies can be switched off immediately, as configured
in ON_OFF_CONFIG or with the OPERATION command.
IMultiple MAX34461 devices (or even other MAX3445x
and MAX3446x PMBus system managers from the
Maxim Integrated family) can be connected together
Maxim Integrated
Figure 3. Multiple Device Hardware Connections
PMBus 16-Channel Voltage Monitor and Sequencer
GLOBAL
CONTROL/OPERATION
SCL/SDA
CONTROL
FAULT
SCL/SDA
CONTROL
FAULT
SCL/SDA
CONTROL
FAULT
channels must start in timeslot 0, whereas
SEQUENCING
MAX34461
MAX34461
MAX34461
COMMON
Multiple Device Connections
SCL/SDA
CONTROL
FAULT
PG
SCL/SDA
CONTROL
FAULT
PG
SCL/SDA
CONTROL
FAULT
PG
SEQUENCING
CASCADED
MAX34461
MAX34461
MAX34461
GLOBAL
MASTER
SLAVE
SLAVE
chan-
to increase the system channel count.
the two possible connection schemes. The MULTI_
SEQ bits in the MFR_MODE command are used to
select the sequencing configuration.
With the Common Control or Common OPERATION
command sequencing arrangement, all the paral-
leled devices share the same CONTROL, FAULT,
and SMBus signals. All the devices use a common
signal (either the CONTROL pin or the OPERATION
command) to enable and disable all of the power
supplies. Any of the monitored power supplies can
be configured with the MFR_FAULT_RESPONSE com-
mand to be tagged as GLOBAL supplies and hence
activate the FAULT signal and shut down all the other
supplies tagged as GLOBAL.
With the Cascaded sequencing arrangement, the
PG output from upstream device is connected to
the CONTROL input on the downstream device. The
CONTROL input on the downstream device must be
enabled with the ON_OFF_CONFIG command. All
the power supplies in the upstream device must be
above the POWER_GOOD_ON level before the power
supplies in the downstream device are sequenced
on. When the CONTROL line is inactivated or the
OPERATION off command turns the supplies off in
the master device, the PG output is pulled low when
the first power supply falls below the POWER_GOOD_
OFF level, which in turn initiates the shutdown of the
channels in the first downstream device. A detected
fault on any GLOBAL power supply can also initiate
the shutdown of the rest of the GLOBAL power supply
channels by pulling the FAULT signal low.
USER NOTE: In Cascaded Sequencing, the master
and slave devices must be powered up at the same
time. Also, all devices must be configured for the
same latch off or retry configuration.
Table 5. Device Configuration Quick
Reference
Disable a
Enable a
ACTION
channel
channel
Configure TON_MAX_FAULT_LIMIT = 0000h
to 7FFFh.
Configure TON_MAX_FAULT_LIMIT = 8000h
to FFFFh.
CONFIGURATION
MAX34461
Figure 3
details
27