psb246-2ir Power-One, psb246-2ir Datasheet - Page 2

• Manufacturer Part Number: psb246-2ir
• Description: Psb Series Extended Positive Switching Regulators Benign
• Manufacturer: Power-One

Part Number Description
Example: PSB 126-2iR = A positive switching regulator with a 12 V, 6 A output, ambient temperature range of
Positive switching regulator in case B02 ................... PSB
Nominal output voltage in volt (5A for 5.1 V) ....... 5 A, ...24
Nominal output current in ampere .............................. 6 , 8
Operational ambient temperature range T
Option package:
Functional Description
The switching regulators are designed using the buck con-
verter topology. See also: Technical Information: Topolo-
gies . The input is not electrically isolated from the output.
During the on period of the switching transistor, current is
transferred to the output and energy is stored in the output
choke. During the off period, this energy forces the current
to continue flowing through the output chocke to the load
and back through the freewheeling diode. Regulation is
accomplished by varying the on/off duty ratio of the power
switch.
Fig. 1
Block diagram
REV. OCT 17, 2003
V
i
I
–10 to 50°C ......................................................... -2
Inhibit input ............................................................ i
Control input for output voltage adjustment ......... R
i
C
e
–10 to 50°C, with options package inhibit input and control input for output voltage adjustment.
Gi–
Vi+
A
Page 2 of 10
Positive Switching Regulators (Benign)
These regulators are ideal for a wide range of
applications, where input to output isolation is not
necessary, or where already provided by an external front
end (e.g. a transformer with rectifier). To optimise
customer’s needs, additional options and accessories are
available.
Control circuit
PSB Series Extended Data Sheet
03014
Vo+
i (option
package)
R (option
package)
G (option
package)
Go–
PSB 12 6 -2 iR
I
o
V
o