CC109130481 Lineage Power, CC109130481 Datasheet - Page 15

• Manufacturer Part Number: CC109130481
• Description: Module DC-DC 1-OUT 0.6V to 3.63V 12A 10-Pin SMT T/R
• Manufacturer: Lineage Power
• Type: Step Downr

Specifications of CC109130481

• Package: 10SMT
• Output Current: 12 A
• Output Voltage: 0.6 to 3.63 V
• Input Voltage: 12 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Data Sheet
April 7, 2011
When an analog voltage is applied to the SEQ pin, the
output voltage tracks this voltage until the output
reaches the set-point voltage. The final value of the
SEQ voltage must be set higher than the set-point
voltage of the module. The output voltage follows the
voltage on the SEQ pin on a one-to-one volt basis. By
connecting multiple modules together, multiple modules
can track their output voltages to the voltage applied on
the SEQ pin.
For proper voltage sequencing, first, input voltage is
applied to the module. The On/Off pin of the module is
left unconnected (or tied to GND for negative logic
modules or tied to V
the module is ON by default. After applying input
voltage to the module, a minimum 10msec delay is
required before applying voltage on the SEQ pin. This
delay gives the module enough time to complete its
internal power-up soft-start cycle. During the delay time,
the SEQ pin should be held close to ground (nominally
50mV ± 20 mV). This is required to keep the internal op-
amp out of saturation thus preventing output overshoot
during the start of the sequencing ramp. By selecting
resistor R1 (see fig. 43) according to the following
equation
the voltage at the sequencing pin will be 50mV when
the sequencing signal is at zero.
Figure 43. Circuit showing connection of the
sequencing signal to the SEQ pin.
After the 10msec delay, an analog voltage is applied to
the SEQ pin and the output voltage of the module will
track this voltage on a one-to-one volt bases until the
output reaches the set-point voltage. To initiate
simultaneous shutdown of the modules, the SEQ pin
voltage is lowered in a controlled manner. The output
voltage of the modules tracks the voltages below their
set-point voltages on a one-to-one basis. A valid input
LINEAGE
R
1
=
VIN+
SEQ
GND
V
IN
24950
POWER
−
R1
. 0
05
ohms,
IN
499K
for positive logic modules) so that
10K
MODULE
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 12A output current
+
-
OUT
Micro TLynx
voltage must be maintained until the tracking and output
voltages reach ground potential.
When using the EZ-SEQUENCE
start-up of the module, pre-bias immunity during start-up
is disabled. The pre-bias immunity feature of the
module relies on the module being in the diode-mode
during start-up. When using the EZ-SEQUENCE
feature, modules goes through an internal set-up time of
10msec, and will be in synchronous rectification mode
when the voltage at the SEQ pin is applied. This will
result in the module sinking current if a pre-bias voltage
is present at the output of the module. When pre-bias
immunity during start-up is required, the EZ-
SEQUENCE
additional guidelines on using the EZ-SEQUENCE
feature please refer to Application Note AN04-008
“Application Guidelines for Non-Isolated Converters:
Guidelines for Sequencing of Multiple Modules”, or
contact the Lineage Power technical representative for
additional information.
TM
: Non-isolated DC-DC Power Modules:
TM
feature must be disabled. For
TM
feature to control
TM
TM
15