UCC2818AD
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Texas Instruments UCC2818AD

Manufacturer No:
UCC2818AD
Manufacturer:
Texas Instruments
Package:
Tube
Description:
IC PFC CTR AVERAGE 220KHZ 16SOIC
Delivery:
Payment:
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Product Introduction

Overview

The UCC2818AD is a power factor correction (PFC) controller from Texas Instruments, designed to achieve near-unity power factor in power supply systems. This device is part of the UCC3817A/UCC3818A family and is fabricated using Texas Instruments' BiCMOS process. It is specifically tailored for active power factor corrected preregulators, shaping the AC input line current waveform to match the AC input line voltage, thereby reducing line distortion and ensuring stable, low-distortion sinusoidal line current through average current mode control.

The UCC2818AD is suitable for applications requiring a fixed supply (VCC) and is available in a 16-pin SOIC (D) package, operating over a temperature range of -40°C to 85°C.

Key Specifications

Parameter Value Unit
Package SOIC (D) -
Pins 16 -
Operating Temperature Range -40 to 85 °C
Supply Voltage (VCC) 12 to 17 V
Frequency Range 6 kHz to 220 kHz -
Start-Up Current 150 µA (typical) -
Gate Drive Current ±1.2 A (peak) -
VCC Turn-On Threshold 10.2 V -
VCC Turn-Off Threshold 9.4 V -

Key Features

  • Controls Boost Preregulator to Near-Unity Power Factor
  • Limits Line Distortion
  • World Wide Line Operation
  • Overvoltage Protection
  • Accurate Power Limiting
  • Average Current Mode Control
  • Improved Noise Immunity
  • Improved Feed-Forward Line Regulation
  • Leading Edge Modulation to reduce ripple current in the bulk capacitor
  • Low-Power BiCMOS Operation
  • Low start-up current of 150 µA (typical)
  • Strong gate drive with ±1.2 A peak current capability

Applications

  • PC Power Supplies
  • Consumer Electronics
  • Lighting Systems
  • Industrial Power Supplies
  • IEC6100-3-2 Compliant Supplies Less Than 300 W

Q & A

  1. What is the primary function of the UCC2818AD?

    The UCC2818AD is a power factor correction (PFC) controller designed to achieve near-unity power factor in power supply systems.

  2. What is the operating temperature range of the UCC2818AD?

    The UCC2818AD operates over a temperature range of -40°C to 85°C.

  3. What are the key features of the UCC2818AD?

    Key features include near-unity power factor control, line distortion limitation, worldwide line operation, overvoltage protection, accurate power limiting, and improved noise immunity.

  4. What is the typical start-up current of the UCC2818AD?

    The typical start-up current is 150 µA.

  5. What is the gate drive current capability of the UCC2818AD?

    The gate drive current capability is ±1.2 A peak.

  6. What are the common applications of the UCC2818AD?

    Common applications include PC power supplies, consumer electronics, lighting systems, industrial power supplies, and IEC6100-3-2 compliant supplies less than 300 W.

  7. What is the supply voltage range for the UCC2818AD?

    The supply voltage range is 12 V to 17 V.

  8. What is the frequency range of the UCC2818AD?

    The frequency range is 6 kHz to 220 kHz.

  9. What type of package is the UCC2818AD available in?

    The UCC2818AD is available in a 16-pin SOIC (D) package.

  10. Does the UCC2818AD have overvoltage protection?

    Yes, the UCC2818AD includes overvoltage protection.

  11. How does the UCC2818AD improve noise immunity?

    The UCC2818AD improves noise immunity through its average current mode control and other design features.

Product Attributes

Mode:Average Current
Frequency - Switching:6kHz ~ 220kHz
Current - Startup:150 µA
Voltage - Supply:12V ~ 17V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:16-SOIC
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Similar Products

Part Number UCC2818AD UCC2819AD UCC2818AN UCC2818D UCC2818ADR UCC2817AD UCC28180D
Manufacturer Texas Instruments Unitrode Unitrode Texas Instruments Texas Instruments Unitrode Texas Instruments
Product Status Active Active Active Active Active Active Active
Mode Average Current Average Current Average Current Average Current Average Current Average Current Continuous Conduction (CCM)
Frequency - Switching 6kHz ~ 220kHz 250kHz 6kHz ~ 220kHz 6kHz ~ 220kHz 6kHz ~ 220kHz 6kHz ~ 220kHz 18kHz ~ 250kHz
Current - Startup 150 µA 150 µA 150 µA 150 µA 150 µA 150 µA 75 µA
Voltage - Supply 12V ~ 17V 10.8V ~ 17V 12V ~ 17V 12V ~ 17V 12V ~ 17V 12V ~ 17V 21V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Through Hole Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-DIP (0.300", 7.62mm) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 16-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 16-SOIC 16-SOIC 16-PDIP 16-SOIC 16-SOIC 16-SOIC 8-SOIC

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