Overview
The TL494IN is a widely used pulse-width modulation (PWM) control IC designed for power supply and inverter applications. Developed by Texas Instruments, it integrates multiple functions such as error amplification, adjustable oscillator frequency, and dead-time control. Its versatility makes it suitable for industrial, automotive, and consumer electronics. As a switch-mode power supply controller, the TL494IN ensures efficient energy conversion with minimal heat generation. Its compact design and robust performance have made it a standard component in power management systems.
Structure and Working Principle
The TL494IN consists of an internal oscillator, two error amplifiers, a flip-flop, and output control circuits. The oscillator generates a sawtooth waveform, which determines the PWM frequency. The error amplifiers compare feedback signals with reference voltages to regulate output duty cycles. Dead-time control prevents simultaneous conduction of output transistors, enhancing efficiency and safety. The IC operates within a voltage range of 7V to 40V, making it adaptable to various power supply designs.
Key Features
The TL494IN offers adjustable frequency (up to 300 kHz), enabling customization for different applications. Its dual error amplifiers provide precise voltage regulation, while the dead-time control feature minimizes power losses. Other notable features include undervoltage lockout (UVLO) and soft-start capability, which protect the circuit during startup. The IC also supports push-pull or single-ended output configurations, increasing design flexibility.
Application Areas
The TL494IN is commonly used in switch-mode power supplies (SMPS), uninterruptible power supplies (UPS), and DC-DC converters. Its reliability and efficiency make it suitable for industrial automation, telecommunications, and renewable energy systems. In consumer electronics, the IC is found in LED drivers, battery chargers, and inverter-based appliances. Automotive applications include electronic control units (ECUs) and power distribution systems.
Maintenance and Precautions
To ensure longevity, avoid exceeding the TL494IN’s maximum voltage (40V) and current ratings. Proper heat dissipation, such as using a heatsink or PCB copper pour, is essential for high-power applications. Avoid static discharge during handling, as it may damage the IC. Regularly inspect solder joints and connections for signs of wear or corrosion, especially in harsh environments.
B2B Procurement Guide
When sourcing the TL494IN, verify the supplier’s authenticity to avoid counterfeit components. Bulk purchases typically offer cost savings, with prices ranging from $0.50 to $2.00 per unit depending on quantity. Check for compliance with industry standards such as RoHS and REACH. Lead time and logistics options should also be considered to ensure timely delivery for production schedules.
Related Manufacturers
- 主营：DC-DC电源芯片、线性稳压器LDO、集成电路、IC、MOS管、IGBT、贴片电容
- 主营：ne3503m04、ne3512s02、sp0503bah、iso1044bd、lt8410edc、保险丝、比较器、b02p-vl-r、ase5s4010、触发器、解码器、thvd1500d、thvd1451d、sy8032abc、hip2100ib、opa4172id、连接器、mx1a-11nw、lshd-7501、ths4531id、二极管、hsmm-c170、tps22914b、lf353dre4、装原封
- 主营：2.0-3.0mh、tps51275c、48mhz64kb、rtl8211dn、5.5v10.8v、a83asot23、opa2227pa、放大器、sh93p426f、5177984-6、opa2131ua、tb6560ahq、tb135xqfn、稳压器、1376357-8、tda12067h、dl-115bga、调节器、c14100kjl、rda8851ml、ad7541akn、变压器、控制器、lt1054cn8、连接器
- 主营：电子元器件、集成电路、电容电阻、电感磁珠、单片机、芯片
- 主营：圣邦微芯片、TI芯片、顺芯芯片、晶丰明源芯片、GD芯片、中科微芯片、微源芯片、普冉电子、上海贝岭
- 主营：电源管理芯片、放大器、连接器
- 主营：80mspsspi、cd4075bpw、spi接口、tlv5625cd、75mspsspi、ic8引脚、sn74ac86n、编码器、tc7sz00fe、触摸屏、iclqfp-48、5.25v1.2a、cd4068bpw、放大器、i2c接口、输入nor、仪器ldo、cd74ac00e、逆变器、cd74ac00m、6a650khz6、sip模块、稳压器、输入and、125ksps16
- 主营：放大器、LDO、肖特基二极管、存储器、传感器、单片机、16位微控制器、栅级和逆变器芯片、时钟缓冲器、音频放大器、DSP数字信号处理器、电机驱动器、稳压器、电源控制器、监视器、通用逻辑门芯片、整流器、信号开关、复用器、解码器、闪存存储芯片、4路通用芯片、线性稳压器、电源模块、继电器
- 主营：晶闸管、p4nk60zfp、贴片esd、attiny24v、iso3086dw、485模块、稳压管、保护管、bav20-tap、电容smd、msc1210y5、485bsop-8、can隔离、dip贴片、tra1-0521、nme0515dc、稳压芯、mpxm2102a、5cc包装、收发机、ad8616arz、tssop14ic、放大器、射频管、定时器
- 主营：集成IC、IC芯片、电子元器件、二三极管
- 主营：TE、TI、连接器、电容、MCU、dc-dc、模块、集成电路IC、ST
- 主营：lm2901q4t、cycloneve、lm2904ypt、tl2843bdr、tl3845bdr、传感器、lm2902q4t、ts3704ipt、ts9224ipt、稳压器、驱动器、控制器、lm337kttr、ts9222ipt、处理器、lm340t-12、lm2902ypt、ts4994ist、arria10gx、tsv914ipt、转换器、二极管、仪器led、lm2904yst、ts922aipt
- 主营：海思芯片、安防监控摄像头芯片、单片机、微控制器、集成电路、稳压芯片、转换器芯片、测温传感器、连接器、模块、内存芯片
- 主营：Diodes美台、ST、THINE、A DI、Ti
- 主营：集成电路、eMMC、DDR、LPDDR、NAND -FLASH、动态随机存取、闪存、存储器、多芯片封装EMCP、嵌入式多媒体卡