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參數資料
| 型號： | TEA1750T/N1,518 |
| 廠商： | NXP Semiconductors |
| 文件頁數： | 24/29頁 |
| 文件大小： | 163K |
| 描述： | IC PFC CONTROLLER DCM16SOIC |
| 標準包裝： | 2,500 |
| 系列： | GreenChip™ III |
| 模式： | 間歇導電（DCM） |
| 頻率 - 開關： | 100kHz ~ 150kHz |
| 電流 - 啟動： | 60µA |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-SO |
| 包裝： | 帶卷 (TR) |
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TEA1750_2
?NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 15 December 2008
24 of 29
NXP Semiconductors
TEA1750
GreenChip III SMPS control IC
[1] For a typical application with a compensation network on pin PFCCOMP, like the example in
Figure
3.
[2] Typically 120 mV above V
stop(fb)
.
[3] Minimum required voltage change time for valley recognition on pin PFCAUX.
[4] Minimum required time between demagnetization recognition and V/t end.
[5] Guaranteed by design.
11. Application information
Apower supply with the TEA1750 consists of a power factor correction circuit followed by
a yback converter. See
Figure
14.
Capacitor C
VCC
buffers the IC supply voltage, which is powered via the high voltage
rectied mains during start-up and via the auxiliary winding of the yback converter during
operation. Sense resistors R
SENSE1
and R
SENSE2
convert the current through the
MOSFETs S1 and S2 into a voltage at pins PFCSENSE and FBSENSE. The values of
R
SENSE1
and R
SENSE2
dene the maximum primary peak current in MOSFETs S1 and S2.
In the example given, the LATCH pin is connected to a Negative Temperature Coefcient
(NTC) resistor. When the resistance drops below
(typ), the
protection is activated.
A capacitor C
TIMEOUT
is connected to the FBCTRL pin. For a 120 nF capacitor, typically
after 10 ms the time-out protection is activated. R
LOOP
is added so that the time-out
capacitor does not interfere with the normal regulation loop.
R
S1
and R
S2
are added to prevent the soft-start capacitors from being charged during
normal operation due to negative voltage spikes across the sense resistors.
Resistor R
AUX1
is added to protect the IC from damage during lightning events. For
applications with high transformer ringing frequencies (after the secondary stroke), the
PFCAUX pin should be connected via a capacitor and a resistor to the auxiliary winding. A
diode must than be placed from the ground connection to the PFCAUX pin.
Temperature protection
T
pl(IC)
IC protection level
temperature
130
140
150
癈
T
pl(IC)hys
hysteresis of IC protection
level temperature
-
10
-
癈
Table 5.
Characteristics &continued
T
amb
= 25 癈; V
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when owing into
the IC; unless otherwise specied.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
prot LATCH
(
)
I
O LATCH
(
)
-------------------------------- 15.6 k&
=
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TEA1750T-T | 功能描述:DC/DC 開關控制器 GREENCHIPIII RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TEA1751AT/N1,518 | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TEA1751AT/N1518 | 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| TEA1751LT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip III SMPS control IC |
| TEA1751LT/N1 | 制造商:NXP Semiconductors 功能描述:AC-DC PFC FLYBACK CNTRL 16SOIC 制造商:NXP Semiconductors 功能描述:AC-DC, PFC, FLYBACK, CNTRL, 16SOIC 制造商:NXP Semiconductors 功能描述:GreenChip III SMPS Control 16-Pin SO |
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