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UCC28C43 from ucc

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15.625ms

UCC28C43

Manufacturer: ucc

BiCMOS Low-Power Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UCC28C43 ucc 5 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C43 is a high-performance current-mode PWM controller manufactured by Texas Instruments. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 8.5V to 18V (operating), up to 20V (absolute max)  
- **Output Current (Source/Sink):** 1A (peak)  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** SOIC-8, PDIP-8  

### **Descriptions:**  
- The UCC28C43 is a versatile PWM controller optimized for high-frequency DC-DC power supply applications.  
- It operates in current-mode control, providing improved loop response and simplified compensation.  
- Features include under-voltage lockout (UVLO), cycle-by-cycle current limiting, and programmable soft-start.  

### **Features:**  
- **Current-Mode Control:** Enhances transient response and simplifies feedback loop design.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable operation within the specified voltage range.  
- **High-Frequency Operation:** Supports switching frequencies up to 1MHz.  
- **Low Startup Current:** Typically 0.5mA for efficient power-up.  
- **Totem-Pole Output:** Capable of driving power MOSFETs directly.  
- **Error Amplifier with High Bandwidth:** Enables fast dynamic response.  

The UCC28C43 is commonly used in offline and DC-DC converters, telecom power supplies, and industrial applications.

Partnumber Manufacturer Quantity Availability
UCC28C43 TI 100 In Stock

Description and Introduction

BiCMOS Low-Power Current Mode PWM Controller The UCC28C43 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range (VCC):** 8.5V to 18V (start-up), 7.6V to 18V (operating)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Bandwidth:** 5MHz  
- **Current Sense Threshold:** 1V  
- **Operating Temperature Range:** -40°C to +105°C  
- **Package Options:** SOIC-8, PDIP-8  

### **Descriptions:**
The UCC28C43 is a versatile PWM controller designed for high-frequency DC-DC power conversion applications. It features current-mode control for improved loop response and line regulation. The device includes an integrated error amplifier, oscillator, and high-current totem-pole output driver, making it suitable for flyback, forward, and boost converters.  

### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.  
- **Programmable Oscillator:** Allows frequency adjustment via external components.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Undervoltage Lockout (UVLO):** Ensures reliable operation within the specified voltage range.  
- **High-Current Output Driver:** Supports fast switching of power MOSFETs.  
- **Leading-Edge Blanking:** Improves noise immunity in current sensing.  
- **Low Standby Current:** Reduces power consumption in standby mode.  

This information is based on TI's official documentation for the UCC28C43. For detailed application notes or design considerations, refer to the manufacturer's datasheet.

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