TEA1751LT

GreenChip III SMPS control IC


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The GreenChip III is the third generation of green Switched Mode Power Supply (SMPS) controller ICs. The GreenChip III 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.

Features and benefits

  • Integrated PFC and flyback controller
  • Dual boost PFC with accurate maximum output voltage
  • On-chip high voltage start-up current source
  • Valley/zero voltage switching for both flyback and PFC
  • PFC is switched off when a low load is detected at the flyback output
  • Frequency reduction to maintain high efficiency at low output power levels
  • Continuous mode protection by means of demagnetization detection
  • Accurate OverVoltage Protection (OVP) for both converters
  • Mains voltage independent OverPower Protection (OPP)
  • Open control loop protection for both converters
  • General purpose input for latched protection
  • Adjustable output overpower protection for flyback converter

Applications

  • Cost-effective power supply solution for up to 250 W
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: TEA1751LT, TEA1751T
Block diagram: TEA1751LT, TEA1751T

Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
Vstartupstart-up voltage212223V
fsw(PFC)maxmaximum PFC switching frequency100125150kHz
fsw(fb)maxmaximum flyback switching frequency100125150kHz
Tjjunction temperature-40150°C
VHVvoltage on pin HV-0.4650V
VCCsupply voltage-0.438V
Vth(UVLO)undervoltage lockout threshold voltage141516V

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1751LT/N1TEA1751LT/N1,5189352 865 59518Volume productionSOT109-1
(SO16) 		Reel Dry Pack, SMD, 13"Standard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1VCCsupply voltagePin configuration: TEA1751(L)T (SOT109-1)SOT109-1
2GNDground
3FBCTRLcontrol input for flyback
4FBAUXinput from auxiliary winding for demagnetization timing andovervoltage protection for flyback
5LATCHgeneral purpose protection input
6PFCCOMPfrequency compensation pin for PFC
7VINSENSEsense input for mains voltage
8PFCAUXinput from auxiliary winding for demagnetization timing for PFC
9VOSENSEsense input for PFC output voltage
10FBSENSEprogrammable current sense input for flyback
11PFCSENSEprogrammable current sense input for PFC
12PFCDRIVERgate driver output for PFC
13FBDRIVERgate driver output for flyback
14HVShigh voltage safety spacer, not connected
15HVShigh voltage safety spacer, not connected
16HVhigh voltage start-up and valley sensing of flyback part

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1751LT/N1TEA1751LT/N1,518TEA1751LT/N1Always Pb-free33
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Documentation for this product

TypeFormatTitleDate
Data sheetpdfGreenChip III SMPS control IC (v.2.0)2009-12-23
Application notepdfGreenChip III TEA1751: integrated PFC and flyback controller (v.1.0)2009-02-10
Application notepdfSMPS EMC and layout guidlines (v.1.0)2011-02-18
LogogifGreenChip logo (v.1.0)2012-04-20
Other typepdfApplication guide: Set-top boxes (STBs) (v.1.0)2011-11-28

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
TEA1751LT/N19352 865 59518TEA1751LT/N1,518ASIAAVNET EXPRESS ASIA37,5005/7/2012Buy online 
   NAMOUSER ELECTRONICS8455/24/2012Buy online 
   NAMOUSER ELECTRONICS8455/24/2012Buy online 
   NAAVNET EXPRESS2005/24/2012Buy online 
   NAFUTURE ELECTRONICS1005/23/2012Buy online 
   EUFUTURE ELECTRONICS UK1005/23/2012Buy online 
   ASIAFUTURE ELECTRONICS- ASIA1005/23/2012Buy online 
   NANEWARK/ELEMENT14315/24/2012Buy online 
   EUFARNELL315/24/2012Buy online 
   ASIAELEMENT14 APAC315/24/2012Buy online 
   ASIASACL - Hong Kong/Chinayes250005/01/2012Buy online 
   JAPANCHIP ONE STOPyes05/14/2012Buy online 

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