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UCC28730D ACTIVE

Zero standby PSR Flyback controller with CVCC and wake-up monitoring

Inventory: 635  
 

Quality information

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

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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Packaging information

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

Features for the UCC28730

  • Enables Zero-Power (<5 mW) standby consumption
  • Smart Wake-Up detection enables smallest output capacitance
  • Primary-side regulation (PSR) eliminates optocoupler
  • ±5% voltage regulation and current regulation across line and load
  • 700-V start-up switch
  • 83-kHz maximum switching frequency enables low stand-by power charger designs
  • Resonant-ring valley-switching operation for highest overall efficiency
  • Frequency-dither to ease EMI compliance
  • Clamped gate-drive output for MOSFET
  • Overvoltage, low-line, and overcurrent protection functions
  • Programmable cable compensation
  • SOIC-7 package

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Description for the UCC28730

The UCC28730 isolated-flyback power supply controller provides Constant-Voltage (CV) andConstant-Current (CC) output regulation without the use of an optical coupler, andwake-up signal detection to improve transient response to largeload steps. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-loadpower. This device processes information from the primary power switch and an auxiliary flybackwinding for precise control of output voltage and current. The wake-up monitoring works with a secondary-side alarm device such as theUCC24650 to deliver rapid response to heavy load steps using minimal output capacitance.

An internal 700-V start-up switch, dynamically- controlled operating states and atailored modulation profile support ultra-low stand-by power without sacrificing start-up time oroutput transient response. Control algorithms in the UCC28730 allow operating efficiencies to meetor exceed applicable standards. Discontinuous conduction mode (DCM) operation with valley-switchingreduces switching losses. Modulation of the switching frequency and primary current peak amplitude(FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

Pricing


Qty Price (USD)
1-99 1.247
100-249 0.96
250-999 0.706
1,000+ 0.505

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 4,890
Qty | Price (USD) 1ku | 0.421 1-99 1.04 100-249 0.8 250-999 0.589 1,000+ 0.421
Custom reel may be available