tea1752t NXP Semiconductors, tea1752t Datasheet - Page 2

• Manufacturer Part Number: tea1752t
• Description: Greenchip Iii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
3. Applications
TEA1752T_LT
Product data sheet
2.3 PFC green features
2.4 Flyback green features
2.5 Protection features
Valley/zero voltage switching for minimum switching losses
(NXP Semiconductors patented, US patent number: US6256210)
Frequency limitation to reduce switching losses
PFC is switched off when a low load is detected at the flyback output
Valley switching for minimum switching losses
(NXP Semiconductors patented, US patent number: US6256210)
Frequency reduction with fixed minimum peak current at low power operation to
maintain high-efficiency at low output power levels
Safe restart mode for system fault conditions
Continuous mode protection by means of demagnetization detection for both
converters (NXP Semiconductors patented, patent number: US5032967)
UnderVoltage Protection (UVP) (foldback during overload)
Accurate OverVoltage Protection (OVP) for PFC
Accurate, adjustable OverVoltage Protection (OVP) for flyback converter
(NXP Semiconductors patented, patent number: US6542386)
Mains voltage independent OverPower Protection (OPP)
(NXP Semiconductors patented, patent number: US6542386)
Open control loop protection for both converters. The open-loop protection on the
flyback converter is latched on the TEA1752LT and safe restart on the TEA1752T
IC overtemperature protection
Low and adjustable OverCurrent Protection (OCP) trip level for both converters
General purpose input for latched protection, e.g. to be used for system
OverTemperature Protection (OTP)
All applications requiring efficient and cost-effective power supply solutions to 250 W.
Notebook adapters in particular can benefit from the high level of integration
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 24 June 2010
TEA1752T; TEA1752LT
GreenChip III SMPS control IC
© NXP B.V. 2010. All rights reserved.
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