Application Circuit Using the TPS23753A (and family) with an External Error Amplifier

Reference Design using part TPS23753APW by Texas Instruments

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Manufacturer

Texas Instruments
  • Application Category
    Power Supplies
  • Product Type
    DC to DC Multi-Output Power Supplies

Associated Documents

For End Products

  • Intelligent Occupancy Sensing
  • PoE Security Camera
  • Power Over Ethernet
  • Surveillance Camera
  • VoIP Handset

Description

  • Application circuit for the TPS23753A, TPS23754, TPS23756 and TPS23757 are intended for applications that have primary-secondary isolation, because of this they do not contain an internal (control loop) error amplifier. Despite the lack of an internal error amplifier, it may be advantageous to use these parts in applications which do not require isolation due to their mix of features. These features include adapter ORing support, 12V supply operation, wider duty cycle, and multiple gate drivers. This Application Report shows how to use the common TLV431 as an error amplifier in conjunction with the this family of parts in a non-isolated flyback converter application

Key Features

  • Conversion Type
    DC to DC
  • Input Voltage
    24 to 48 V
  • Output Voltage
    3.3|5 V
  • Output Current
    1.4@5V|2@3.3V A
  • Output Power
    7 W
  • Topology
    Flyback

Featured Parts (6)

Featured Parts
Part Number Manufacturer Type Description
TLV431ACDBZRG4 Texas Instruments Voltage References V-Ref Adjustable 1.24V to 6V 15mA 3-Pin SOT-23 T/R Buy
FOD817AS onsemi Transistor and Photovoltaic Output Photocouplers Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP SMD Black Box Buy
FOD817ASD onsemi Transistor and Photovoltaic Output Photocouplers Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin PDIP SMD T/R Buy
TLV431ACDBZR Texas Instruments Voltage References V-Ref Adjustable 1.24V to 6V 15mA 3-Pin SOT-23 T/R Buy
TPS23753APWR Texas Instruments Power Over Ethernet - PoE Controllers Power Over Ethernet PD Controller 0V 57V 13W 14-Pin TSSOP Buy
TPS23753APW Texas Instruments Power Over Ethernet - PoE Controllers Power Over Ethernet PD Controller 0V 57V 13W 14-Pin TSSOP Buy

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