15V And 5V Car Battery Supply

Posted on Aug 19, 2012

IC1 is a switching regulator that generates a 45-kHz signal that drives the gate of MOSFET Ql. Dl, D2, an

15V And 5V Car Battery Supply
Click here to download the full size of the above Circuit.

d D3 are Schottky diodes. The 5-V output is sensed as a reference; feedback to the chip turns off the gate signal to Ql if the voltage rises above 5 V. Tl has Trifilar windings that assume about 2% regulation for a 10-to 100-mA load change on the ± 15-V supplies. R1/D4 provide overvoltage protection. Tl has a primary inductance of about 21 . Core size should allow 4-A peak currents. The turn ratios are IIV2 turns each for the 15-V supplies, ll1/2 turns for the primary, and four turns for the 5-V secondary. The efficiency is about 75%.

Leave Comment

characters left:

New Circuits



Popular Circuits

Flashing Lamps
Lithium Ion Charger 2 Cell
Two-phase squarewave oscillator
40 PIN AVR Development Board
Flashing-LED Battery-Status Indicator Circuit
Wirelessly Powering a Swarm of Robots
Infrared remote control dimmer light circuit diagram
With triac light control lamp 1
Output by the CS3843 and CS5101 composed of 5V 3.3V switching DC power supply circuit