JNC350R41TZ Datasheet, PDF (9/16 Pages) Lineage Power Corporation – Compliant to RoHS EU Directive 2002/95/EC (-Zversions)

Data Sheet
August 9, 2010
JNC350R Power Modules; DC-DC Converters
18 – 36 Vdc Input; 28Vdc Output; 350W Output
Feature Description (continued)
Examples:
To trim down the output of a nominal 28V module to
16.8V
%  ^{28V 16.8V} 100
28V
∆% = 40
Radj  down   ¹⁰⁰  2k
 ⁴⁰ 
Radj - down = 0.5 k
To trim up the output of a nominal 28V module to
30.8V
%  ^{30.8V  28V} 100
28V
Δ% = 10
R_{adj up}

 28  (100  10)
 _{1.225 10}

(100
 (2
10

10)
^k
Radj - up = 239.4 kΩ
Modules with the –T Option
Trim Down – Decrease Output Voltage
With an external resistor (Radj-down) between the TRIM
and SENSE(+) pins, the output voltage set point
(Vo,adj) decreases (see Figure 15). The following
equation determines the required external-resistor
value to obtain a percentage output voltage change of
%.
For output voltages: 28V
Radj  down   ^10631.45 111.2k
 ^%

Where,
%  ^{V  V o, nom desired} 100
Vo, nom
V_desired = Desired output voltage set point (V).
Figure 15. Circuit Configuration to Decrease
Output Voltage, JNC350R-T option.
Trim Up – Increase Output Voltage
With an external resistor (Radj-up) connected between
the SENSE(-) and TRIM pins, the output voltage set
point (V_o,ad_j) increases (see Figure 16).
The following equation determines the required
external-resistor value to obtain a percentage output
voltage change of %.
For output voltages: 28V
Radj  up  _ ^488.5 _k
 ^% 
Where,
%  ^{Vdesired  Vo, nom} 100
Vo, nom
Vdesired = Desired output voltage set point (V).
Figure 16. Circuit Configuration to Increase
Output Voltage, JNC350Rx-T option.
LINEAGE POWER
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