HV start-up DCM/QR flyback controller - NXP Semiconductors
Description
TEA1751T
HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller
Rev.
3 — 10 January 2013
Product data sheet
1.
General description
The TEA1751T is the third generation of green Switched Mode Power Supply (SMPS) controller ICs.
The TEA1751T combines a controller for Power Factor Correction (PFC) and a flyback controller.
Its high level of integration allows the design of a cost-effective power supply with a very low number of external components.
The special built-in green functions provide high efficiency at all power levels.
This efficiency applies to quasi-resonant operation at high-power levels, quasi-resonant operation with valley skipping, as well as reduced frequency operation at lower power levels.
At low-power levels, the PFC switches off to maintain high efficiency.
During low-power conditions, the flyback controller switches to frequency reduction mode and limits the peak current to 25 % of its maximum value.
This mode ensures high efficiency at low...
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