Data Sheet: Supereta
TM
iQN Series –Single Output Quarter Brick
©2005-2006 TDK Innoveta Inc.
iQN 35V/6A/-0A9 Datasheet Issue 1.2 4/8/2008
℡
(877) 498
-
0099
12/15
Vin(-)
On/ Off
Vin (+)
On/Off Circuit for positive or negative logic
Output Voltage Adjustment: The output
voltage of the module may be adjusted by
using an external resistor connected
between the trim pin 6 and either the Sense
(+) or Sense (-) pin. If the voltage trim
feature is not used, pin 6 should be left
open. Care should be taken to avoid
injecting noise into the module’s trim pin. A
small 0.01uF capacitor between the power
module’s trim pin and Sense (-) pin may
help to avoid this.
With a resistor between the trim pin and
Sense (-) pin, the output voltage is adjusted
down. To adjust the output voltage down a
percentage of Vout (∆%) from Vo,nom, the
trim resistor should be chosen according to
the following equation:
01.3)1
%
100
(19.6 −−
∆
×=
down
R
(kΩ)
Where
∆%=100×(Vo,nom - Vdesired) / Vo_nom
The current limit set point does not increase
as the module is trimmed down, so the
available output power is reduced.
Sense(+)
Vout(+)
Vout(-)
Rdown
Trim
Sense(-)
Circuit to decrease output voltage
1
10
100
1000
10000
0 10 20 30 40 50
% Decrease in Output Voltage, ∆(%)
Trim Resistance (k Ω)
With a resistor between the trim pin and
sense (+) pin, the output voltage is adjusted
up. To adjust the output voltage up a
percentage of Vout (∆%) from Vo,nom the
trim resistor (in kΩ) should be chosen
according to the following equation:
,0
−∆−∆×∆+××= VrefVRnom
up