NDM1-12-120 CUI Inc, NDM1-12-120 Datasheet - Page 11

• Manufacturer Part Number: NDM1-12-120
• Description: DIG CONV DC/DC POL 0.6~2.5V 12A
• Manufacturer: CUI Inc
• Series: Novum NDM1-12r
• Type: Digital Point of Load (POL) Non-Isolatedr

Specifications of NDM1-12-120

• Output: 0.6 ~ 2.5V
• Number Of Outputs: 1
• Power (watts): 30W
• Mounting Type: Through Hole
• Voltage - Input: 8.5 ~ 14V
• Package / Case: 24-DIP Module
• 1st Output: 0.6 ~ 2.5 VDC @ 12A
• Size / Dimension: 0.93" L x 0.50" W x 0.46" H (23.6mm x 12.7mm x 11.7mm)
• Power (watts) - Rated: 30W
• Efficiency: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• 3rd Output: -
• 2nd Output: -
• Other names: 102-2140

MODEL:
High ESR Output Cap Optimization Mode
Auto-Control™ automatically tunes for a wide range of
capacitor values and types including low ESR MLCC,
with High ESR Output Cap Optimization Mode set to
LOW. However, even further improvements are possible
for capacitor types where the ESR zero is significant,
by setting the High ESR Output Cap Optimization Mode
to HIGH. Beware that selecting High ESR Output Cap
Optimization Mode HIGH when only MLC capacitors are
employed may result in low level oscillation. By default
high ESR output cap optimization Mode is set to OFF.
Auto-Control™ Technology Advantages
• Robust reliable control. Impervious to variations in
• Optimized higher performance control. Significantly
• Enables the use of lower cost (poorer tolerance
REMOTE SENSING
In general, the load distribution circuit should have
minimal impedance due to the large load current, to
help achieve good regulation and low distribution loss.
If needed, remote sensing can be implemented to im-
prove regulation and transient response. Connect the
+Sense and –Sense pins to the +Vout and –Vout points
where regulation is needed, through two separate
differential pair traces.
OUTPUT ON/OFF CONTROL
By default, the device is configured to be always on
without on/off control. The output of NDM1-12 can
be turn on and off through the CTRL pin. Either posi-
tive or negative logic can be configured. With positive
logic, the module will be turned on with a logic high
on the CTRL pin, and turned off with a logic low signal.
Negative logic is just the opposite. The device can also
be configured to be always on without on/off control,
which is the default device setting. The CTRL pin can
also be used to allow for sequencing (see OUTPUT
VOLTAGE SEQUENCING).
components and the application context.
improves transient performance and reduces the
number of decoupling capacitors required in the end
application.
components) without risking stability.
20050 SW 112
NDM1-12-120
th
Ave. Tualatin, Oregon 97062
a division of CUI INC
DESCRIPTION:
phone [phone]
Vout
Vout
POWERGOOD SIGNAL
The NDM1-12 module provides a PG signal to indicate
the status of normal operations. It is an open collector
signal that requires a pull up resistor to a 3.3V line. It
goes high when the output voltage is within regulation,
and automatically adjusts for different output voltages.
It goes low whenever the output voltage is out of regu-
lation is such cases as over-current , over temperature
or input under voltage.
STARTUP WITH PRE-BIAS
The NDM1-12 allows a power-up into a Pre-bias
condition. A Pre-bias condition happens when a voltage
is present on the output of the power converter before
it is enabled.
The converter starts its ramp following the predefined
power-up sequence (delay and ramp). When the refer-
ence voltage reaches the Pre-bias voltage level, the
PWM output is enabled.
0
0
Receive startup
vout prebias level
command
vout_ prebias
NDM1 system initialisation
Figure 2: Pre-bias is greater than Vout
NON-ISOLATED DIGITAL DC-DC
POL CONVERTER
Figure 3: Pre-bias is less than Vout
fax [phone] www.novumdigital.com
Enable ramp logic
Start Power
Control
Startup Delay
Startup_
delay
_
Ramp Rate can be set
date
page
Ramp slope can be set
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vout
regulated
vout
_
t
t