TEA1721AT

HV start-up flyback controller with integrated MOSFET for 5 W applications, f~burst = 430 Hz


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The TEA1721 is a small and low cost module Switched Mode Power Supply (SMPS) controller IC for low power applications (up to 5 W) and operates directly from the rectified universal mains input. The device includes a high voltage power switch (700 V) and has been optimized for flyback converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuit for start-up directly from the rectified mains voltage without any external bleeder circuits. The Burst mode frequency of 430 Hz enables no-load power consumption below < 10 mW at high mains input.

Features and benefits

  • Low power SMPS controller for applications up to 5 W
  • 700 V high voltage power switch for global mains operation
  • Primary sensing without optocoupler and secondary feedback circuitry
  • Minimizes audible noise in all operation modes
  • USB battery charging and Energy Star 2.0 compliant
  • Jitter function for reduced EMI
  • Enables no-load power consumption < 10 mW
  • Very low supply current in no-load condition with energy saver mode
  • High voltage start-up circuit with zero current consumption during switching
  • Available in halogen-free and (RoHS) SO7 package
  • OverVoltage Protection (OVP) on supply pin and on (FB) pin with auto-restart
  • UnderVoltage LockOut (UVLO) protection on IC supply pin
  • OverTemperature Protection (OTP)
  • Soft-start by reduced peak current for zero and low output voltage
  • Demagnetization protection for guaranteed discontinuous conduction mode
  • Open and short-circuit protection of the Feedback control (FB) pin

Applications

  • White goods
  • Industrial
  • Smart meters
  • Mobile USB chargers
  • General-purpose adapters
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

TEA1721
TEA1721

Demo boards

TEA1721ADB1059TEA1721ADB1059

TEA1721 Non-isolated buck converter demo board

TEA1721ADB1060TEA1721ADB1060

TEA1721 Non-isolated buck/boost converter demo board

TEA1721ADB1061TEA1721ADB1061

Isolated universal mains flyback converter demo board

TEA1721ADB1062TEA1721ADB1062

TEA1721 Isolated 3-phase universal mains flyback converter demo board

TEA1721BDB1065TEA1721BDB1065

TEA1721 universal mains white goods flyback SMPS demo board


Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
fburstburst frequencyBurst frequency in CVB mode, without jitter390430470Hz
fosc-highoscillator frequency Highmaximum switching frequency in CV and CC mode, without jitter4850.553kHz
RDSondrain-source on-state resistanceTj = 25 °C; Ids = 30 mA1315.517Ω
Tjjunction temperature-40150°C
VCCvoltage on pin VCC-0.335V
VCC(startup)start-up supply voltage151719V
VCC(stop)stop supply voltageundervoltage lockout of IC7.58.59.5V

Package

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
TEA1721AT/N1TEA1721AT/N1,1189352 928 45118Volume productionSOT1175-1
(SO7) 		Reel Pack, SMD, 13"Standard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1GND1groundPin diagram TEA1721sot1175-1_3d (SO7)
2GND2ground
3GND3ground
4FBfeedback input for voltage sensing
5VCCsupply input
6SOURCEsource of power switch
7DRAINdrain of power switch
--high voltage spacer

Outline drawing

Package VersionPackage NamePackage DescriptionReference CodesIssue Date
SOT1175-1SO7plastic small outline package; 7 leads; body width 3.9 mm- - - (EIAJ); - - - (JEDEC); - - - (IEC); 2010-04-21

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
TEA1721AT/N1TEA1721AT/N1,118TEA1721AT/N1Always Pb-free11
Quality and reliability disclaimer

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NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

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NXP Semiconductors' products are specifically designed and manufactured to be used within the electrical, thermal, mechanical and other parameters set forth in NXP Semiconductors' data sheets. Quality and reliability data provided by NXP Semiconductors, such as MTBF, MSL and FIT, is intended to be a non-binding estimate of product performance based upon diffusion process, history only. It does not imply that any performance levels reflected in such data can be met if the product is operated outside the conditions expressly stated in the latest published data sheet for a device or in your application.

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Documentation for this product

File nameTitleTypeFormatDate
TEA1721ATHV start-up flyback controller with integrated MOSFET for 5 W applications, 430 Hz burst frequency Data sheetpdf2012-06-07
AN11060TEA172X 5 W to 11 W Power Supply/USB chargerApplication notepdf2012-06-08
75017320NXP GreenChip low-power SMPS controllers TEA172x Leafletpdf2012-08-21
001aan129GreenChip logoLogogif2012-04-20
UM10520Isolated 3-phase universal mains flyback converter demo boardUser manualpdf2012-01-23
UM10523TEA1721 universal mains white goods flyback SMPS demo board User manualpdf2012-01-27
UM10521TEA1721 isolated universal mains flyback converter demo boardUser manualpdf2012-03-08
UM10522TEA1721 non-isolated universal mains buck and buck/boost converter demo boardUser manualpdf2012-03-08
UM10529TEA1721AT 5 W GreenChip SP small-size demo boardUser manualpdf2012-05-29

Ordering & availability

Type number)Ordering code (12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
TEA1721AT/N19352 928 45118TEA1721AT/N1,118NAAVNET EXPRESS AMERICAS2,50011/30/2012Buy online 
   NANEWARK/ELEMENT141,81911/30/2012Buy online 
   EUFarnell Europe1,819111/30/2012Buy online 
   JAPANCHIP ONE STOP58811/30/2012Buy online 
   NADIGI-KEY CORPORATION56811/30/2012Buy online 
   ASIAElement 140130/11/2012Buy online 

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Demo boards

TEA1721ADB1059
TEA1721ADB1059

TEA1721 Non-isolated buck converter demo board

TEA1721ADB1060
TEA1721ADB1060

TEA1721 Non-isolated buck/boost converter demo board

TEA1721ADB1061
TEA1721ADB1061

Isolated universal mains flyback converter demo board

TEA1721ADB1062
TEA1721ADB1062

TEA1721 Isolated 3-phase universal mains flyback converter demo board

TEA1721BDB1065
TEA1721BDB1065

TEA1721 universal mains white goods flyback SMPS demo board

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