TEA1742T NXP Semiconductors, TEA1742T Datasheet
TEA1742T
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TEA1742T Summary of contents
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... Rev. 01 — 10 February 2009 www.datasheet4u.com 1. General description The TEA1742T is a controller for Power Factor Correction (PFC). 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 and quasi-resonant operation with valley skipping ...
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... Ordering information Table 1. Ordering information Type number Package Name TEA1742T SO8 TEA1742T_1 Objective data sheet Description plastic small outline package; 8 leads; body width 3.9 mm Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Version SOT96-1 © NXP B.V. 2009. All rights reserved ...
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... ENABLE PFC 60 A SOFT START START STOP PFC TIMER 4 s VALLEY DETECT 4 PFCGATE ZCS TIMER 50 s 100 mV 1 GND Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller 7 DRV PFC OSC V START START STOP SMPS V UVLO PFC CONTROL OTP S ...
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... V CC TEA1742T_1 Objective data sheet GND 1 VINSENSE 2 TEA1742T 3 PFCCOMP 4 PFCAUX Pin configuration: TEA1742T (SOT96-1) Pin description Pin Description 1 ground 2 sense input for mains voltage 3 frequency compensation pin for PFC 4 input from auxiliary winding for demagnetization timing for PFC 5 sense input for PFC output voltage ...
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... NXP Semiconductors 7. Functional description www.datasheet4u.com 7.1 General control The TEA1742T contains a controller for a power factor correction circuit. A typical configuration is shown in Fig 3. 7.1.1 Start-up and UnderVoltage LockOut (UVLO) The control logic activates the internal circuitry when the voltage on pin V V startup soft start capacitor on the PFCSENSE pin is charged, the PFC circuit is activated. See Figure When one of the protection functions is activated, the converter stops switching ...
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... TEA1742T_1 Objective data sheet V CC soft start VOSENSE apply starting normal mains converter operation and VCC Start-up sequence, normal operation and restart sequence Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller V START V UVLO V start(VINSENSE) V stop(VINSENSE) protection restart 014aaa737 . CC control. The resulting mains harmonic on © ...
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... Mains Harmonic Reduction (MHR) requirements may be hard to meet. To compensate for the mains input voltage influence, the TEA1742T contains a correction circuit. Via the VINSENSE pin the average input voltage is measured and the information is fed to an internal compensation circuit ...
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... I startup(soft)PFC S1 R SS1 11 PFCSENSE C SS1 R SENSE1 Soft start-up of PFC I(VOSENSE) Voltage to current transfer function for dual boost PFC Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Figure SOFT START CONTROL OCP 0.5 V 014aaa157 Figure 6. 2 ...
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... Limiting values Parameter Conditions supply voltage voltage on pin PFCCOMP voltage on pin VINSENSE voltage on pin VOSENSE voltage on pin PFCAUX voltage on pin PFCSENSE current limited Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller level, switching of ovp(VOSENSE) level again. OVP(VOSENSE) Min Max Unit 0.4 +38 V ...
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... Conditions in free air; JEDEC test board Conditions ) startup th(UVLO) no load on pin PFCDRIVER active after V stop(VINSENSE) detected Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Min Max 1 +10 0.8 +2 < 0.45 55 +150 20 +150 [1] - 2000 ...
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... V ton(PFCCOMP)max VINSENSE PFCCOMP V ton(PFCCOMP)max for O(PFCCOMP) V < VINSENSE bst(dual) VOSENSE < 2 > V VINSENSE bst(dual mV 200 mV/ s Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Min Typ Max Unit 4 100 200 - mV 60 ...
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... Minimum required voltage change time for valley recognition on pin PFCAUX. TEA1742T_1 Objective data sheet Conditions enabling voltage peak-peak PFCAUX PFCAUX PFCDRIVER PFCDRIVER PFCDRIVER Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Min Typ Max Unit 0.46 0.50 0. 100 125 150 kHz 1 ...
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... MOSFET S1 into a SENSE1 is added to protect the IC from damage during lightning events. AUX1 CSS1 RAUX1 7 4 COMPENSATION 3 2 Typical application diagram TEA1742T Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller defines the maximum primary peak SENSE1 D1 C BUS S1 RSS1 RSENSE1 ...
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... 0.49 0.25 5.0 4.0 0.25 1.27 0.36 0.19 4.8 3.8 0.019 0.0100 0.20 0.16 0.244 0.05 0.01 0.014 0.0075 0.19 0.15 0.228 REFERENCES JEDEC JEITA MS-012 Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller detail 6.2 1.0 0.7 1.05 0.25 0.25 0.1 5.8 0.4 0.6 0.039 0.028 ...
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... NXP Semiconductors 13. Revision history www.datasheet4u.com Table 6. Revision history Document ID Release date TEA1742T_1 20090210 TEA1742T_1 Objective data sheet Data sheet status Change notice Objective data sheet - Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller Supersedes - © NXP B.V. 2009. All rights reserved ...
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... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. GreenChip — trademark of NXP B.V. http://www.nxp.com salesaddresses@nxp.com Rev. 01 — 10 February 2009 TEA1742T GreenChip PFC controller © NXP B.V. 2009. All rights reserved ...
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... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2009. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 10 February 2009 Document identifier: TEA1742T_1 All rights reserved. ...