Sure Electronics TL494 User manual

©2004-2013 Sure Electronics Inc. PS-SP12151_Ver1.0
300W Boost Converter for CAR Audio
– TL494
User’s Guide

300W Boost Converter for CAR Audio - TL494
©2004-2013 Sure Electronics Inc. PS-SP12151_Ver1.0
To keep the product in a best working condition and having a long service time, please operate it according to
the relevant steps. The warranty lapses if the product is damaged because of incorrect use and your
negligence.
Please read this manual carefully before you use the product and check if the product is a good one. DC12V
is recommended to be used to power the product for one hour. Never use this product in an extreme
condition.
Warning: Never immerse the product in the rain or any other humid environment to prevent the fire or
electric shock.
Safety Precautions:
1. This product is designed for Car audio amplifier. Please fix it well.
2. Protect this product well and move away metal objects from this product.

300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
©2004-2013 Sure Electronics Inc. PS-SP12151_Ver1.0_Page i
Table of Contents
Chapter 1. Overview ..........................................................................................................1
1.1 Overview.............................................................................................................. 1
1.2 Features............................................................................................................... 2
1.3 Applications......................................................................................................... 2
1.4 Benefits................................................................................................................ 2
1.5 Quick Start ........................................................................................................... 3
Chapter 2. Hardware Detail ...............................................................................................4
2.1 Input Connection................................................................................................. 4
2.2 Output Connection.............................................................................................. 4
2.3 Enable Pin Connection....................................................................................... 4
2.4 LED Indicator....................................................................................................... 4
Chapter 3. Electrical Characteristics ...............................................................................5
Chapter 4. Mechanical Drawing........................................................................................6
Chapter 5. Contact Us .......................................................................................................7

300W BOOST CONVERTER FOR CAR AUDIO - TL494
©2004-2013 Sure Electronics Inc PS-SP12151_Ver1.0_Page ii
NOTES:
Product Version ：Ver 1.0
Document Version ：Ver 1.0

300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
©2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page 1
1.1 Overview Welcome to use this self-made 300W Boost Converter for CARAudio - TL494. This item
is especially designed for CAR audio. It can be used with amplifiers from Sure
Electronics. With DC12V input, it can output voltage of DC18V, DC24V, DC30V, DC36V,
DC48 and power of up to 300W. You can set DIP switches to get the voltage required in
your applications. Do turn off the power before adjust the voltage.
DIP Switch Settings and Voltage
VOUT K1 K2 K3 K4
24V ON OFF OFF OFF
30V OFF ON OFF OFF
36V OFF OFF ON OFF
40V OFF OFF OFF ON
48V OFF OFF OFF OFF
Please adjust the adjustable resistance-R27 if you want to get more precise voltage.
FIGURE 1-1 OVERVIEW
Chapter 1. Overview