tea1753lt NXP Semiconductors, tea1753lt Datasheet

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tea1753lt

Manufacturer Part Number
tea1753lt
Description
Tea1753lt Greenchip Iii Smps Control Ic
Manufacturer
NXP Semiconductors
Datasheet

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TEA1753LT
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1. General description
The GreenChip III is the third generation of green Switched Mode Power Supply (SMPS)
controller ICs. The TEA1753LT 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 off to maintain high efficiency.
During low power conditions, the flyback controller switches to frequency reduction mode
and limits the peak current to an adjustable minimum value. This will ensure high
efficiency at low power and good standby power performance while minimizing audible
noise from the transformer.
For no-load operation, the controller is switched to the power down mode. In this mode
the controller is shutdown for very low standby power applications.
The TEA1753LT is a MultiChip Module, (MCM), containing 2 chips. The proprietary high
voltage BCD800 process which makes direct start-up possible from the rectified universal
mains voltage in an effective and green way. The second low voltage
Silicon On Insulator (SOI) is used for accurate, high speed protection functions and
control.
The TEA1753LT enables highly efficient and reliable supplies with power requirements of
up to 250 W to be designed easily and with a minimum number of external components.
Remark: It should be noted that all values provided throughout the running text, are
typical values unless otherwise stated.
TEA1753LT
GreenChip III SMPS control IC
Rev. 01 — 4 March 2011
Objective data sheet

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tea1753lt Summary of contents

Page 1

... For no-load operation, the controller is switched to the power down mode. In this mode the controller is shutdown for very low standby power applications. The TEA1753LT is a MultiChip Module, (MCM), containing 2 chips. The proprietary high voltage BCD800 process which makes direct start-up possible from the rectified universal mains voltage in an effective and green way ...

Page 2

... W. Notebook adapters, in particular, benefit from this high level of integration TEA1753LT Objective data sheet All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC © NXP B.V. 2011. All rights reserved ...

Page 3

... Name TEA1753LT SO16 TEA1753LT Objective data sheet Description plastic small outline package; 16 leads; body width 3.9 mm All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Version SOT109-1 © NXP B.V. 2011. All rights reserved ...

Page 4

... ZERO CURRENT charge SIGNAL low power DELAY delay PFCTIMER All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC 13 flyback driver 80 µA driver external flyback gate protection 1.25 V protection R Q 2.5 V frequency S reduction ...

Page 5

... CC 2 GND FBCTRL 3 4 FBAUX LATCH 5 PFCCOMP 6 VINSENSE 7 PFCAUX 8 Pin configuration: TEA1753LT (SOT109-1) Pin description Pin Description 1 supply voltage 2 ground 3 control input for flyback 4 input from auxiliary winding for demagnetization timing and overvoltage protection for flyback 5 general purpose protection input 6 frequency compensation pin for PFC ...

Page 6

... NXP Semiconductors 7. Functional description 7.1 General control The TEA1753LT contains a controller for a power factor correction circuit as well as a controller for a flyback circuit. A typical configuration is shown in Fig 3. 7.1.1 Start-up and UnderVoltage LockOut (UVLO) Initially the capacitor on the V As long pin is shorted to ground. For a short start-up time the charge current above V ...

Page 7

... V again. start(VINSENSE) drops below the undervoltage lockout level, both controllers CC pin voltage is recharged via the HV pin. CC All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC level, an to(FBCTRL) via the VCC Figure 1). > V ...

Page 8

... VINSENSE pin below the V switching and the safe restart protection will be activated. Because the high voltage start-up current source is also disabled during power-down, the TEA1753LT will not restart until the VINSENSE pin voltage is raised again. During power down all internal circuitry is disabled except for a voltage detection circuit on the VINSENSE pin. This circuit is supplied by the HV pin and will draw 16  ...

Page 9

... As soon as the VINSENSE voltage drops below is not recharged from the HV mains. The OTP circuit VCC supply voltage is not sufficient. CC Section All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC to drop to the reset level. CC and on CC and on pin CC 7 ...

Page 10

... Mains Harmonic Reduction (MHR) requirements may be hard to meet. To compensate for the mains input voltage influence, TEA1753LT contains a correction circuit. Via the VINSENSE pin the average input voltage is measured and the information is fed to an internal compensation circuit ...

Page 11

... I start(soft)PFC ≤ 60 μ SS1 11 PFCSENSE C SS1 R SENSE1 Soft start-up of PFC All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC start(soft)PFC SOFT START SOFT STOP CONTROL OCP 0.5 V 014aaa756 Section 7.3) is low, the flyback Section 7 ...

Page 12

... Voltage to current transfer function for dual boost PFC , on the source of the external MOSFET. The voltage is SENSE1 level, switching of the PFC is stopped. All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC 3. low power delay Q ...

Page 13

... A. This permits fast turn-on and turn-off of the power MOSFET for efficient operation. 7.3 Flyback controller The TEA1753LT includes a controller for a flyback converter. The flyback converter operates in quasi-resonant or discontinuous conduction mode with valley switching. The auxiliary winding of the flyback transformer provides demagnetization detection and powers the IC after start-up ...

Page 14

... the primary self-inductance of the flyback transformer and C p All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Section PFC on discontinuous with valley switching quasi-resonant V FBCTRL 7.3.2). Figure 9 ). ...

Page 15

... Figure 11. All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC secondary ringing (2) (1) 014aaa027 Figure 8) © NXP B.V. 2011. All rights reserved (4) ...

Page 16

... FBSENSE peak voltage flyback cycle skip mode 0.325 V 1.5 V Figure 12 All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC FBSENSE offset voltage SENSE resistor peak voltage flyback discontinuous FBCTRL 014aaa747 time of 2  ...

Page 17

... NXP Semiconductors Fig 12. Time-out protection circuit Fig 13. Latched time-out protection (signals) in the TEA1753LT 7.3.6 Soft start-up (pin FBSENSE) To prevent audible transformer noise during start-up, the transformer peak current, I slowly increased by the soft start function. This can be achieved by inserting a resistor and a capacitor between pin 10 (FBSENSE) and the current sense resistor. ...

Page 18

... Overvoltage protection (FBAUX pin) An output overvoltage protection is implemented in the GreenChip III series. In the TEA1753LT this works by sensing the auxiliary voltage via the current flowing into pin FBAUX during the secondary stroke. The auxiliary winding voltage is a well-defined replica of the output voltage. Voltage spikes are averaged by an internal filter. ...

Page 19

... OCP level V FBSENSE Figure 16. −360 I (μA) FBAUX All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC t 014aaa022 V FBSENSE (V) 0.65 0.46 −100 0 014aaa749 © NXP B.V. 2011. All rights reserved ...

Page 20

... All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Min 0.4 0.4 0.4 0.4 0.4 0.4 25 0.4 0.4  ...

Page 21

... V HV trip no load on pin FBDRIVER and PFCDRIVER active after V th(UVLO) > V VINSENSE stop(VINSENSE detected start(VINSENSE) All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Typ 124 37 Min Typ - 1.0 < V startup - 5 ...

Page 22

... O(PFCCOMP) V < VINSENSE bst(dual) V < 2.1 V VOSENSE V > V VINSENSE bst(dual) V/ mV/s V/t = 200 mV/s All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Min Typ Max Unit - 2 200 - mV - 280 - ...

Page 23

... PFCAUX demagnetization to V/ PFCAUX = 5 V PFCTIMER PFCDRIVER PFCDRIVER PFCDRIVER All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Min Typ Max Unit 75 60 45 A 0.46 0.50 0.54 V 0.42 0.45 0. ...

Page 24

... FBCTRL FBCTRL V = 2.6 V FBCTRL V = 4.1 V FBCTRL enable voltage All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Min Typ Max Unit 60 80 110 mV 75  0.85 0.7 0.55 V 0.79 ...

Page 25

... V FBDRIVER = FBDRIVER V < V < V prot(LATCH) LATCH at start-up  en(LATCH) prot(LATCH) All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Min Typ Max 0.61 0.65 0.69 0.64 0.68 0.72 0.305 0.325 0.345 V 255 305 355 3.2 3  ...

Page 26

... NXP Semiconductors 11. Application information A power supply with the TEA1753LT consists of a power factor correction circuit followed by a flyback converter. See Capacitor C rectified mains during start-up and via the auxiliary winding of the flyback converter during operation. Sense resistors R MOSFETs S1 and S2 into a voltage at pins PFCSENSE and FBSENSE. The values of ...

Page 27

... REFERENCES JEDEC JEITA MS-012 All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control detail ...

Page 28

... NXP Semiconductors 13. Revision history Table 6. Revision history Document ID Release date TEA1753LT v.1 20110304 TEA1753LT Objective data sheet Data sheet status Objective data sheet All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC Change notice ...

Page 29

... Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities. All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC © NXP B.V. 2011. All rights reserved ...

Page 30

... 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 All information provided in this document is subject to legal disclaimers. Rev. 01 — 4 March 2011 TEA1753LT GreenChip III SMPS control IC © NXP B.V. 2011. All rights reserved ...

Page 31

... 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. 2011. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com All rights reserved. Date of release: 4 March 2011 Document identifier: TEA1753LT ...

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