Jump to: navigation, search

Difference between revisions of "5A constant current source"

Difference between revisions of "5A constant current source"

(Quick overview)
 
(Category:Electronics and common ground problem explained.)
Line 1: Line 1:
non-isolated constant current and voltage regulator with non-synchronous rectification
+
[[Category:Electronics]]
 +
 
 +
Non-isolated constant current and voltage regulator with non-synchronous rectification
 
[http://www.ebay.co.uk/itm/231024475078]
 
[http://www.ebay.co.uk/itm/231024475078]
 +
 +
The current is measured on the minus output! See [*] in sketch below.
 +
So it is not possible to use a common ground on the secondary side for multiple regulators.
 +
The current path must be a single path from plus to minus on the secondary side.
 +
  ______________
 +
|              | 
 +
= -(regulate)--= ------
 +
| +in    out- |      |
 +
|              |      V  LED
 +
| -in    out- |      |
 +
=------[*]-----= -\ /--
 +
|______________|  --- MOSFET
 +
                    |
 +
-- from Arduino ----           
  
 
== Electrical Characteristics ==
 
== Electrical Characteristics ==

Revision as of 21:33, 10 February 2014


Non-isolated constant current and voltage regulator with non-synchronous rectification [1]

The current is measured on the minus output! See [*] in sketch below. So it is not possible to use a common ground on the secondary side for multiple regulators. The current path must be a single path from plus to minus on the secondary side.

 ______________
|              |  
= -(regulate)--= ------
| +in     out- |      |
|              |      V  LED
| -in     out- |      |
=------[*]-----= -\ /--
|______________|  --- MOSFET
                   |
-- from Arduino ----             

Electrical Characteristics

Input voltage
5V-32V
Maximum output voltage
0.8V-30V (adjustable)
Maximum output current
0.1-5A (adjustable)
Conversion efficiency
up to 95%
Switching frequency
300KHz
Output ripple
50mV (max)
Load Regulation
± 0.5%
Voltage Regulation
± 2.5%
Operating Temperature
-40C to +85C

Physical Characteristics

Size (L x W x H)
51mm x 26.3mm x 14mm