tea1752t NXP Semiconductors, tea1752t Datasheet - Page 34

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tea1752t

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

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NXP Semiconductors
16. Contents
1
2
2.1
2.2
2.3
2.4
2.5
3
4
5
6
6.1
6.2
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.2.9
7.2.10
7.2.11
7.2.12
7.2.13
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.3.8
7.3.9
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
Distinctive features . . . . . . . . . . . . . . . . . . . . . . 1
Green features . . . . . . . . . . . . . . . . . . . . . . . . . 1
PFC green features . . . . . . . . . . . . . . . . . . . . . 2
Flyback green features . . . . . . . . . . . . . . . . . . . 2
Protection features . . . . . . . . . . . . . . . . . . . . . . 2
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
General control . . . . . . . . . . . . . . . . . . . . . . . . . 6
Start-up and UnderVoltage LockOut (UVLO) . . 6
Supply management. . . . . . . . . . . . . . . . . . . . . 8
Latch input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fast latch reset . . . . . . . . . . . . . . . . . . . . . . . . . 9
OverTemperature Protection (OTP) . . . . . . . . . 9
Power Factor Correction circuit (PFC) . . . . . . . 9
t
Valley switching and demagnetization
(PFCAUX pin) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Frequency limitation . . . . . . . . . . . . . . . . . . . . 10
Mains voltage compensation
(VINSENSE pin) . . . . . . . . . . . . . . . . . . . . . . . 10
Soft start-up (pin PFCSENSE) . . . . . . . . . . . . 10
Low power mode . . . . . . . . . . . . . . . . . . . . . . 11
PFC off delay (pin PFCTIMER) . . . . . . . . . . . 11
Dual boost PFC . . . . . . . . . . . . . . . . . . . . . . . 12
Overcurrent protection (PFCSENSE pin) . . . . 12
Mains undervoltage lockout/brownout
protection (VINSENSE pin) . . . . . . . . . . . . . . 12
Overvoltage protection (VOSENSE pin) . . . . . 13
PFC open-loop protection (VOSENSE pin) . . 13
Driver (pin PFCDRIVER) . . . . . . . . . . . . . . . . 13
Flyback controller . . . . . . . . . . . . . . . . . . . . . . 13
Multimode operation . . . . . . . . . . . . . . . . . . . . 13
Valley switching (HV pin) . . . . . . . . . . . . . . . . 15
Current mode control (FBSENSE pin) . . . . . . 16
Demagnetization (FBAUX pin) . . . . . . . . . . . . 17
Flyback control/time-out (FBCTRL pin) . . . . . 17
Soft start-up (pin FBSENSE) . . . . . . . . . . . . . 18
Maximum on-time . . . . . . . . . . . . . . . . . . . . . . 19
Overvoltage protection (FBAUX pin) . . . . . . . 19
Overcurrent protection (FBSENSE pin) . . . . . 20
on
control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.3.10
7.3.11
8
9
10
11
12
13
14
14.1
14.2
14.3
14.4
15
16
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. 2010.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
TEA1752T; TEA1752LT
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 21
Thermal characteristics . . . . . . . . . . . . . . . . . 22
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 22
Application information . . . . . . . . . . . . . . . . . 28
Package outline. . . . . . . . . . . . . . . . . . . . . . . . 30
Revision history . . . . . . . . . . . . . . . . . . . . . . . 31
Legal information . . . . . . . . . . . . . . . . . . . . . . 32
Contact information . . . . . . . . . . . . . . . . . . . . 33
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Overpower protection. . . . . . . . . . . . . . . . . . . 20
Driver (pin FBDRIVER) . . . . . . . . . . . . . . . . . 21
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 32
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 33
GreenChip III SMPS control IC
Document identifier: TEA1752T_LT
Date of release: 24 June 2010
All rights reserved.

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