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UCC28720D ACTIVE

Constant-voltage, constant-current controller with primary-side regulation for bipolar power devices

Inventory:

Pricing


Qty Price (USD)
1-99 1.304
100-249 1.003
250-999 0.739
1,000+ 0.528

Additional package qty | carrier options info-circle

custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,500 | LARGE T&R
Inventory
Qty | Price (USD) 1ku | 0.44 1-99 1.087 100-249 0.836 250-999 0.616 1,000+ 0.44

Quality information

RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information info-circle

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins SOIC (D) | 7
Package qty | Carrier: 75 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the UCC28720

  • < 10-mW No-Load Power
  • Primary-Side Regulation (PSR) Eliminates Opto-
    Coupler
  • ±5% Voltage and Current Regulation Across Line
    and Load
  • 700-V Start-Up Switch
  • 80-kHz Maximum Switching Frequency Enables
    High-Power Density Charger Designs
  • Quasi-Resonant Valley-Switching Operation for
    Highest Overall Efficiency
  • Wide VDD Range Allows Small Bias Capacitor
  • Dynamic BJT Drive
  • Overvoltage, Low-Line, and Overcurrent
    Protection Functions
  • Programmable Cable Compensation
  • SOIC-7 Package

Description for the UCC28720

The UCC28720 flyback power supply controller provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.

An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.

Control algorithms in the UCC28720 allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a bipolar transistor power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The controller has a maximum switching frequency of 80 kHz and always maintains control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28720 allows compensation for voltage drop in the cable to be programmed with an external resistor.

Inventory:

Pricing


Qty Price (USD)
1-99 1.304
100-249 1.003
250-999 0.739
1,000+ 0.528

Additional package qty | carrier options info-circle

custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,500 | LARGE T&R
Inventory
Qty | Price (USD) 1ku | 0.44 1-99 1.087 100-249 0.836 250-999 0.616 1,000+ 0.44

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships  tube or tray  devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

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