EVAL-ADM1068LQEBZ Analog Devices Inc, EVAL-ADM1068LQEBZ Datasheet - Page 32

• Manufacturer Part Number: EVAL-ADM1068LQEBZ
• Description: BOARD EVALUATION FOR ADM1068LQ
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADM1068LQEBZ

• Main Purpose: Power Management, Power Supply Supervisor/Tracker/Sequencer
• Embedded: No
• Utilized Ic / Part: ADM1068
• Primary Attributes: 10 Channel Supervisor / Sequencer, 6 Voltage Output DACs
• Secondary Attributes: GUI Programmable via SMBus (via USB)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

EVAL-ADM106x
WARNINGS
The WARNINGS function is a wide OR gate which is available as
an input to the Sequencing Engine and can be used as condition to
move out of a State. The inputs to this OR gate are the status of the
secondary voltage detectors on VP1-4/VH and the status of the
ADC readings relative to their limit registers.
In the WARNINGS window only the ADC inputs to the function
can be programmed. The status of the secondary voltage detectors
is merely reported. The WARNINGS window is shown below.
Figure 64. Warnings window
The ADC Readback Limit Warnings section of the window
reports the following information:-
Only one threshold
available per channel
– Can either have a
UV or OV Limit but
not both
Enabled in
the Readback
window
1.
2.
3.
Table 7. Max Input voltage allowed on SFDvs. ADC
Pin Names- The inputs to the devices. These pin names
are updated with any changes made in the Pin Names
window (see section on Pin Names).
Readback- Reports if an input channel has been enabled
to be read as part of the Round Robin. The channel is
actually enabled in the Readback window.
Input Range- This shows the maximum value allowed on
the input channel. This maximum value is dictated by the
input range selected in the Inputs window. Note that the
maximum input voltage allowable for the ADC can be
higher than is allowed for the Supply Fault detector on the
same input. Table 6 below shows the maximum allowable
voltage for the SFD and the ADC on the same channel.
Rev. PrB | Page 32 of 38
MARGINING
The ADM1062/6/7/9 have six (four on the ADM1069) voltage
output DAC’s. These can be used to margin up to six different
supplies up or down. The DAC’s on the ADM1067 operate in
an open loop manner. On the ADM1062/6/9, the DAC’s can
be used in conjunction with the ADC to perform closed loop
margining on the supplies (ie) the DAC can be used to alter the
supply, the ADC can be used to measure the supply and ensure
that it is at the correct value, if not then the DAC can alter the
supply again etc.
The margining window is in two parts, the first window shown
below in Figure 65, is the calculator window. This window
guides the user through the calculation process for a give DC-
DC converter output. This is achieved by simply filling in the
resistor and feedback fields. The software will calculate the rest
and prompt the user when limits have been exceeded. (See
figure 66)
4.
5.
RANGE
0.573V to
1.375V
1.25V to 3.0V
2.5V to 6.0V
6.0V to 14.4V
Limit Type- A fault can be indicated if the input
voltage read by the ADC is higher than the value set
in the limit register (an Over voltage or OV condition)
or if the value read is lower than the value set in the
limit register (an Under voltage or UV condition).
Note: Only one limit register is available for each
ADC channel so an Out of Window fault (UV or OV)
cannot be indicated.
Limit Level- A limit register is provided for each of
the input channels to the ADC. In this register, the
user can program a voltage value. This value is then
compared to the ADC reading for the channel. If the
reading is above or below the limit value (this is
determined by Limit Type- see note 4 above) then a
fault is asserted.
Preliminary Technical Data
Max SFD
voltage allowed
1.375V
3.0V
6.0V
14.4V
Max ADC
Voltage
allowed
2.048V
4.468V
6.0V
14.4V