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TEA1750

NXP Semiconductors
Part Number TEA1750
Manufacturer NXP Semiconductors
Description GreenChip III SMPS controller
Published May 4, 2009
Detailed Description TEA1750 GreenChip III SMPS control IC Rev. 02 — 15 December 2008 www.datasheet4u.com Product data sheet 1. General des...
Datasheet PDF File TEA1750 PDF File

TEA1750
TEA1750

Overview
TEA1750 GreenChip III SMPS control IC Rev.
02 — 15 December 2008 www.
datasheet4u.
com Product data sheet 1.
General description The GreenChip III is the third generation of green Switched Mode Power Supply (SMPS) controller ICs.
The TEA1750 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 applies to quasi-resonant operation at high power levels, quasi-resonant operation with valley skipping, as well as to reduced frequency operation at lower power levels.
At low power levels, the PFC switches over to burst mode control to maintain high efficiency.
In burst mode, soft-start and soft-stop functions are added to eliminate audible noise.
During low power conditions, the flyback controller switches to frequency reduction mode and limits the peak current to 25 % of its maximum value.
This will ensure high efficiency at low power and good standby power performance while minimizing audible noise from the transformer.
The proprietary high voltage BCD800 process makes direct start-up possible from the rectified universal mains voltage in an effective and green way.
A second low voltage Silicon On Insulator (SOI) IC is used for accurate, high speed protection functions and control.
The TEA1750 enables highly efficient and reliable supplies with power requirements up to 250 W, to be designed easily and with the minimum number of external components.
2.
Features 2.
1 Distinctive features I Integrated PFC and flyback controller I Universal mains supply operation (70 V AC to 276 V AC) I High level of integration, resulting in a very low external component count and a cost-effective design 2.
2 Green features I On-chip start-up current source 2.
3 PFC green features I Valley/zero voltage switching for minimum switching losses (patented) I Freque...


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