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UCC38503 - BiCMOS PFC/PWM Combination Controller

Download the UCC38503 datasheet PDF. This datasheet also covers the UCC38500 variant, as both devices belong to the same bicmos pfc/pwm combination controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The UCC2850x family provides all of the control functions necessary for an active power-factorcorrected preregulator and a second-stage dc-to- dc converter.

Key Features

  • D Combines PFC and Downstream Converter Controls D Controls Boost Preregulator to Near-Unity Power Factor D Accurate Power Limiting D Improved Feedforward Line Regulation D Peak Current-Mode Control in Second Stage D Programmable Oscillator D Leading-Edge/Trailing-Edge Modulation for Reduced Output Ripple D Low Start-up Supply Current D Synchronized Second Stage Start-Up, with Programmable Soft-start D Programmable Second Stage Shutdown.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UCC38500-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
UCC3807-1 Programmable Maximum Duty Cycle PWM Controller Unitrode
UCC3807-2 Programmable Maximum Duty Cycle PWM Controller Unitrode
UCC3807-3 Programmable Maximum Duty Cycle PWM Controller Unitrode
UCC3808-1 Low Power Current Mode Push-Pull PWM Unitrode
UCC3808-2 Low Power Current Mode Push-Pull PWM Unitrode

Other Datasheets by Texas Instruments

Part Number Description
UCC38500 BiCMOS PFC/PWM Combination Controller
UCC38501 BiCMOS PFC/PWM Combination Controller
UCC38502 BiCMOS PFC/PWM Combination Controller
UCC38531 Universal Serial Bus Power Controller
UCC3800 Low-Power BiCMOS Current-Mode PWM Controllers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
UCC28500, UCC28501, UCC28502, UCC28503 UCC38500, UCC38501, UCC38502, UCC38503 SLUS419C − AUGUST 1999 − REVISED NOVEMBER 2001 BiCMOS PFC/PWM COMBINATION CONTROLLER FEATURES D Combines PFC and Downstream Converter Controls D Controls Boost Preregulator to Near-Unity Power Factor D Accurate Power Limiting D Improved Feedforward Line Regulation D Peak Current-Mode Control in Second Stage D Programmable Oscillator D Leading-Edge/Trailing-Edge Modulation for Reduced Output Ripple D Low Start-up Supply Current D Synchronized Second Stage Start-Up, with Programmable Soft-start D Programmable Second Stage Shutdown DESCRIPTION The UCC2850x family provides all of the control functions necessary for an active power-factorcorrected preregulator and a second-stage dc-to- dc converter.