APXW005A0X3-SRZ Datasheet, PDF (13/21 Pages) Lineage Power Corporation – 9-36V ProLynxTM 5A: Non-Isolated DC-DC Power Modules

Preliminary Data Sheet
9-36V ProLynx^TM 5A: Non-isolated DC-DC Power Modules
July 22, 2010
9 – 36Vdc input; 3Vdc to 18Vdc output; 5A to 2.5A output current
Once the unit goes into thermal shutdown it will then
wait to cool before attempting to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Output Voltage Programming
The output voltage of the 9-36V ProLynx^TM module can
be programmed to any voltage from 3Vdc to 18Vdc by
connecting a resistor between the Trim and GND pins of
the module. Certain restrictions apply on the output
voltage set point depending on the input voltage. These
are shown in the Output Voltage vs. Input Voltage Set
Point Area plot in Fig. 35.
Without an external resistor between Trim and GND
pins, the output of the module will be 0.7Vdc. To
calculate the value of the trim resistor, Rtrim for a
desired output voltage, use the following equation:
Rtrim
=


(Vo⁷−^00.7)^{kΩ}
Rtrim is the external resistor in kΩ, and Vo is the desired
output voltage.
40
35
30
Upper Limit
25
20
15
Lower Limit
10
5
2
4
6
8 10 12 14 16 18
Output Voltage (V)
Figure 35. Output Voltage vs. Input Voltage Set
Point Area plot showing limits where the output
voltage can be set for different input voltages.
Table 1 provides Rtrim values required for some
common output voltages.
Table 1
VO, set (V)
3.3
5
6
9
12
15
18
Rtrim (KΩ)
26.92
16.27
13.20
8.43
6.19
4.89
4.04
By using a ±0.5% tolerance trim resistor with a TC of
±100ppm, a set point tolerance of ±1.5% can be
achieved as specified in the electrical specification.
Remote Sense
The 9-36V ProLynx^TM power modules have a Remote
Sense feature to minimize the effects of distribution
losses by regulating the voltage between the VS+ and
Vo pin. The voltage between the VS+ pin and Vo pin
should not exceed 0.5V.
VIN(+)
ON/OFF
VO(+)
VS+
TRIM
GND
Rtrim
LOAD
Figure 36. Circuit configuration for programming
output voltage using an external resistor.
Startup into Pre-biased Output
The 9-36V ProLynx^TM 5A modules can start into a
prebiased output as long as the prebias voltage is 0.5V
less than the set output voltage.
Voltage Margining
Output voltage margining can be implemented in the 9-
36V ProLynx^TM modules by connecting a resistor,
Rmargin-up, from the Trim pin to the ground pin for
margining-up the output voltage and by connecting a
resistor, Rmargin-down, from the Trim pin to output pin for
margining-down. Figure 37 shows the circuit
configuration for output voltage margining. The POL
Programming Tool, available at www.lineagepower.com
under the Design Tools section, also calculates the
values of Rmargin-up and Rmargin-down for a specific output
voltage and % margin Please consult your local Lineage
Power technical representative for additional details.
LINEAGE POWER
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