TL494CDG Allicdata Electronics
Allicdata Part #:

TL494CDG-ND

Manufacturer Part#:

TL494CDG

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: ON Semiconductor
Short Description: IC REG CTRLR BCK/PSH-PULL 16SOIC
More Detail: Buck, Push-Pull Regulator Positive Output Step-Dow...
DataSheet: TL494CDG datasheetTL494CDG Datasheet/PDF
Quantity: 1000
1 +: 0.00000
Stock 1000Can Ship Immediately
$ 0
Specifications
Frequency - Switching: 200kHz
Base Part Number: TL494
Supplier Device Package: 16-SOIC
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Operating Temperature: 0°C ~ 70°C (TA)
Control Features: Dead Time Control, Frequency Control
Serial Interfaces: --
Clock Sync: No
Synchronous Rectifier: Yes
Duty Cycle (Max): 48%
Series: SWITCHMODE™
Voltage - Supply (Vcc/Vdd): 7 V ~ 40 V
Output Phases: 1
Number of Outputs: 2
Topology: Buck, Push-Pull
Output Configuration: Positive
Function: Step-Down, Step-Up/Step-Down
Output Type: Transistor Driver
Part Status: Obsolete
Packaging: Tube 
Description

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Introduction

TL494CDG is a type of DC-DC switching controller which is mainly applied to power electronic system. It is an integrated circuit with complete logic control and signal output, providing both flexible and powerful control for the power electronic switched or voltage conversion system. It provides a complete power supply design solution for AC-DC converters, DC-DC converters and SMPS. TL494CDG also provides pulse width modulation (PWM) control, protecting device undervoltage locking (UVL). In addition, TL494CDG also integrates many kinds of advanced technologies, such as constant on time, constant off-time and voltage feedback control. It is highly integrated, high performance and cost-effective DC-DC switching controller.

Application Fields

The application fields ofTL494CDG DC-DC switching controller are quite diverse. TL494CDG is widely used in switch power supplies, communications, auto electronics, digital products, electronic information, intelligent home appliance, industrial control, home entertainment systems, and other power supply products.

The above application fields are respectively used in such conditions as:

  • Switch power supplieswork in AC-DC, DC-DC and SMPS with high efficiency power conversion.
  • Communicationsequipment supplies better performance of soft switching and voice AME function.
  • Autoelectronicsystems provide solutions to vehicle power supply with stability, protection and distributed power.
  • Digitalproducts provide multiple circuit overload protection and flash LED drive.
  • Electronicinformationproducts like notebook computers and PDAs provide performance and competitive pricing solutions.
  • Intelligenthomeappliances provide solutions for PS/2, remote control signals and surge absorbing.
  • Industrialcontrol links provide flexible solutions for intelligent monitoring system.
  • Homeentertainment systems supply power solutions for micro-projectors, DVD/HDD and other home entertainment devices.

Working Principle

The working principle of TL494CDG DC-DC switching controller is simple and clear. Firstly, the AC power source is rectified. Then the DC power is converted and output by a power transistor in the circuit working in cycle on the off to control the output of the converter, which is the same as any other pulse width modulation (PWM) DC-DC converter. The switching frequency and the duty cycle of the output are determined by the design of the circuit, as well as the external components used.

If switching frequency and duty cycle of the output of TL494CDG varies, the output voltage and current of the converter also changes accordingly. When the duty cycle is increased, the output voltage will increase and the output current will decrease. When the duty cycle is reduced, the output voltage will decrease and the output current will increase. On the other hand, the switching frequency can also be changed accordingly to control the output voltage.

The device has various kinds of protections, such as Short-Circuit Protection, Over Voltage Protection, Under Voltage Protection and so on. It will send a signal interrupting the cycle of the power transistor when the Unser Voltage Protection occurs, thus making the output voltage stay at a fixed level until the fault is corrected.

Therefore, TL494CDG can also serve as a protector for the AC/DC converter and DC/DC converter.

Conclusion

TL494CDG DC-DC switching controller is a highly integrative, versatile and powerful integrated circuit. It is mainly applied to power electronic system and has been widely used in different fields, such as switch power supplies, communications, auto electronics, digital products, electronic information, intelligent home appliance, industrial control, home entertainment systems, and other power supply products. The working principle is simple and clear and the device also has Various kinds of protections, such as Short-Circuit Protection, Over Voltage Protection and Under Voltage Protection. All these features make TL494CDG an ideal choice for power electronic system.

The specific data is subject to PDF, and the above content is for reference

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