Page 1
300W Boost Converter for CAR Audio
– TL494
User’s Guide
© 2004-2013 Sure Electronics Inc. PS-SP12151_Ver1.0
Page 2
300W Boost Converter for CAR Audio - TL494
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.
© 2004-2013 Sure Electronics Inc. PS-SP12151_Ver1.0
Page 3
300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
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
© 2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page i
Page 4
300W BOOST CONVERTER FOR CAR AUDIO - TL494
NOTES:
Product Version ： Ver 1.0
Document Version ： Ver 1.0
© 2004-2013 Sure Electronics Inc
PS-SP12151_Ver1.0_Page ii
Page 5
1.1 Overview
300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
Chapter 1. Overview
Welcome to use this self-made 300W Boost Converter for CAR Audio - 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 resist ance-R27 if you want to get more precise voltage.
FIGURE 1-1 OVERVIEW
© 2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page 1
Page 6
Overview
1.2 Features
y A mature DC/DC Boost Converter
y LED status indicator
y Voltage adjustable via DIP switch
y A smart cooling fan
y Input lines with fuses protection
1.3 Applications
y Car audio power conversion
1.4 Benefits
y Excellent heat dissipation eliminates the requirement of an extra heat sink.
y Rigorous component selection, layout and test to ensure performance sta bility
y Kinds of output voltage selectable
y EN pin for external connection
y Wide input voltage range
y Wide output voltage rang
y Output voltage can be fine-tuned by rotat i ng the adjustable resistance
y Low-voltage protection (10V)
y Over-voltage protection (28V)
y Fan starts to work when the output current is greater than 3A
e
PS-SP12151_Ver1.0_Page 2
© 2004-2013 Sure Electronics Inc
Page 7
1.5 Quick Start
300W Boost Converter for CAR Audio - TL494
Suggested connection is shown in figure 1-2.
FIGURE 1-2 CONNECTION SCHEMATIC
Note: Please observe the following steps to complete verification so as to ensure the
products are intact during transit.
1. Open the product package and make sure the product is intact (No missing or
damaged components and no deformation.)
2. Please observe the connection schematics when connecting the 300W Boost
Converter for CAR Audio - TL494. Use nearby DC12Vand a multimeter to have a
trial. This 300W Boost Converter for CAR Audio - TL494 can be deemed as
qualified if the indicator keeps on and output voltage is the same or similar
with the value marked.
© 2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page 3
Page 8
300W BOOST CONVERTER FOR CAR AUDIO
Chapter 2. Hardware Detail
2.1 Input Connection
A high-performance power supply is important for a 300W Boost Converter for CAR
Audio - TL494 to output voltage and work stably. Pay attention to the polarity when
connecting power supply.
2.2 Output Connection
Before power the amplifier, please test if the voltage is what you want and pay attention
to the polarity.
2.3 Enable Pin Connection
When EN pin is suspended or grounded, boost converter works.
When EN pin connects to DC12V, boost converter won’t work.
2.4 LED Indicator
This 300W Boost Converter for CAR Audio - TL494 has one LED indicator which shows
the current operation status. The indicator will be constantly illuminated in green when
the converter works normally.
FIGURE 1-2 LED INDICATOR
- TL494
USER’S GUIDE
PS-SP12151_Ver1.0_Page 4
© 2004-2013 Sure Electronics Inc.
Page 9
300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
Chapter 3. Electrical Characteristics
Following table lists all typical data of the 300W Boost Converter for CAR Audio - TL494.
TABLE 3-1 BASIC PARAMETERS
Parameter Condition Min. Typ. Max.
Supply Voltage - 11V 12V 27V
EN enabled Voltage - 12V
Output Power - - 300W
Oscillation Frequency - - 55KHZ Quiescent Current VIN=12V - 20mA -
Operating Temperature - 0℃ 20℃ 80℃
Storage Temperature - -20℃ 20℃ 105℃
Thermal Shutdown - - 150℃ -
Note:
Stresses beyond the listed maximum power supply voltage may cause the
permanent damage to components on board.
© 2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page 5
Page 10
300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
Chapter 4. Mechanical Drawing
FIGURE 4-1 MECHANICAL DRAWING
PS-SP12151_Ver1.0_Page 6
© 2004-2013 Sure Electronics Inc.
Page 11
300W BOOST CONVERTER FOR CAR AUDIO
- TL494
USER’S GUIDE
Chapter 5. Contact Us
Sure Electronics Co., Ltd.
East zone, 3F, Building 6
Jingang Technology Innovation Center
No.108 Ganjiabian Rd (ZIP: 210000)
Qixia District
Nanjing
P.R.China
Tel: +86-25-68154800-860
Fax: +86-25-68154891-832
Website: www.sure-electronics.com
Email: customerservice@sure-electronics.com
© 2004-2013 Sure Electronics Inc.
PS-SP12151_Ver1.0_Page 7
Loading...