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TDA4817 from SIE

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TDA4817

Manufacturer: SIE, SIMENS, PHI, 西门子

PFC IC for High Power Factor and Acti...

Partnumber Manufacturer Quantity Availability
TDA4817 SIE, SIMENS, PHI, 西门子 5364 In Stock

Description and Introduction

PFC IC for High Power Factor and Acti... The TDA4817 is a power factor correction (PFC) controller IC manufactured by Siemens. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Manufacturer:** Siemens  
- **Type:** Power Factor Correction (PFC) Controller  
- **Operating Voltage Range:** Typically 10V to 20V  
- **Switching Frequency:** Adjustable (exact range depends on external components)  
- **Current Sense Input:** Includes an internal comparator for current sensing  
- **Error Amplifier:** Integrated for voltage regulation  
- **Driver Output:** Provides a totem-pole output for driving external MOSFETs  
- **Protection Features:** Overvoltage protection (OVP) and undervoltage lockout (UVLO)  

### **Descriptions:**  
The TDA4817 is designed to improve power factor in switch-mode power supplies (SMPS) by controlling the input current waveform to follow the input voltage. It operates in continuous conduction mode (CCM) and is suitable for applications requiring high efficiency and compliance with power quality standards.  

### **Features:**  
- **Power Factor Correction:** Ensures near-unity power factor.  
- **Adjustable Frequency:** Allows optimization for different applications.  
- **Integrated Error Amplifier:** Simplifies feedback loop design.  
- **Current Limiting:** Protects against excessive current.  
- **Low Standby Power Consumption:** Enhances efficiency in light-load conditions.  
- **Overvoltage Protection (OVP):** Safeguards against voltage spikes.  
- **Undervoltage Lockout (UVLO):** Ensures proper startup and shutdown.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

PFC IC for High Power Factor and Acti...

Alternative Part Number

  • MC33262 --: Active power factor controller with the same control scheme and pinout family, widely available and a common drop-in substitute for the TDA4817.
  • L6561 --: Transition-mode power factor correction controller functionally equivalent to the TDA4817, with similar supply range and gate drive capability.
  • UC3854 --: Industry-standard PFC controller offering comparable functionality for power factor correction designs, usable as an alternative with minor circuit adjustment.
  • MC33364 --: Critical-conduction-mode power factor controller with similar current-sense and feedback architecture, commonly used as a functional substitute for TDA4817 in PFC pre-regulator designs.
  • UC3852 --: Zero-current-switched PFC controller with similar operating principle, usable as an alternative with minor circuit adjustments.
  • UC3842 --: Industry-standard current-mode PWM controller widely used as a substitute for TDA4817 in power supply designs; well documented and readily available.
  • SG3524 --: Classic PWM control IC with similar control-loop function, often used to replace older Siemens TDA4817 controllers in retrofit designs.
  • MC34063 --: Versatile switching regulator controller that can implement comparable PWM regulation functions and is a common cross-reference for obsolete TDA4817 parts.

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