ZY2105 Power-One, ZY2105 Datasheet - Page 13

• Manufacturer Part Number: ZY2105
• Description: Zy2105 5a No-bus Pol
• Manufacturer: Power-One

where R
∆V% is the absolute value of desired margining
expressed in percents of the nominal output voltage.
During normal operation the resistors are removed
from the circuit by the switches.
Down” switch is normally closed shorting the resistor
R
open disconnecting the resistor R
An alternative configuration of the margining circuit is
shown in Figure 14.
switches
advantageous in some implementations.
ZD-01967 REV. B1.1
Up Switch
Margining
(normally
DOWN
open)
while the “Margining Up” switch is normally
TRIM
are
Down Switch
is the value of the trim resistor in kΩ and
R
Margining
(normally
UP
open)
normally
In the configuration both
R
R
open
TRIM
DOWN
UP
.
that
The “Margining
MARGIN
TRIM
GND
www.power-one.com
may
POL
be
8V to 14V Input
R
from the following equations:
Caution:
Refer to No-Bus
Note on
information on this and other product features.
ZY2105 5A No-Bus POL Data Sheet
UP
and R
R
Figure 14. Alternative Margining Configuration
R
UP
DOWN
Noise injected into the TRIM node may affect accuracy
of the output voltage and stability of the POL
converter. Always minimize the PCB trace length from
the TRIM pin to external components to avoid noise
pickup.
www.power-one.com
=
DOWN
20
20
=
×
+
for this configuration are determined
20
20
R
R
TM
TRIM
TRIM
×
+
R
R
POL Converters.
•
TRIM
TRIM
×
0.5V to 5.5V Output

 

5
×
×



R
100
TRIM
∆
for more application
V
∆
Page 13 of 14
−
V
%
−
∆
%
∆
V
V
%
%



Application
, kΩ

 

, kΩ