參數(shù)資料
型號(hào)： TOP248F
廠商： POWER INTEGRATIONS INC
元件分類： 穩(wěn)壓器
英文描述： 7.2 A SWITCHING REGULATOR, 140 kHz SWITCHING FREQ-MAX, PZIP6
封裝： PLASTIC, TO-262, 7/6 PIN
文件頁(yè)數(shù)： 34/52頁(yè)
文件大?。?/td> 2175K
代理商： TOP248F
TOP242-250
N
4/05
4
Pin Functional Description
DRAIN (D) Pin:
High voltage power MOSFET drain output. The internal
start-up bias current is drawn from this pin through a switched
high-voltage current source. Internal current limit sense point
for drain current.
CONTROL (C) Pin:
Error amplier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. It is also used as the
connection point for the supply bypass and auto-restart/
compensation capacitor.
LINE-SENSE (L) Pin: (Y, R or F package only)
Input pin for OV, UV, line feed forward with DC
MAX reduction,
remoteON/OFFandsynchronization. AconnectiontoSOURCE
pin disables all functions on this pin.
EXTERNALCURRENTLIMIT(X)Pin:(Y,RorFpackage
only)
Input pin for external current limit adjustment, remote
ON/OFF, and synchronization. A connection to SOURCE pin
disables all functions on this pin.
MULTI-FUNCTION (M) Pin: (P or G package only)
This pin combines the functions of the LINE-SENSE (L) and
EXTERNAL CURRENT LIMIT (X) pins of the Y package
into one pin. Input pin for OV, UV, line feed forward with
DC
MAX reduction, external current limit adjustment, remote
ON/OFF and synchronization. A connection to SOURCE pin
disables all functions on this pin and makes TOPSwitch-GX
operate in simple three terminal mode (like TOPSwitch-II).
FREQUENCY (F) Pin: (Y, R or F package only)
Input pin for selecting switching frequency: 132 kHz if
connected to SOURCE pin and 66 kHz if connected to
CONTROL pin. The switching frequency is internally set for
xed 132 kHz operation in P and G packages.
SOURCE (S) Pin:
Output MOSFET source connection for high voltage power
return. Primary side control circuit common and reference point.
PI-2724-010802
Tab Internally
Connected to
SOURCE Pin
Y Package (TO-220-7C)
C
D
S
1 C
3 X
2 L
5 F
4 S
7 D
M
P Package (DIP-8B)
G Package (SMD-8B)
R Package (TO-263-7C)
F Package (TO-262-7C)
8
5
7
1
1 2 3 4 5
7
C L X S F D
4
2
3
Figure 3. Pin Conguration (top view).
X
PI-2629-092203
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
RIL
RLS
12 k
2 M
VUV = IUV x RLS
VOV = IOV x RLS
For RLS = 2 M
DCMAX@100 VDC = 78%
DCMAX@375 VDC = 38%
For RIL = 12 k
ILIMIT = 69%
See Figure 54b for
other resistor values
(RIL) to select different
ILIMIT values
VUV = 100 VDC
VOV = 450 VDC
PI-2509-040501
DC
Input
Voltage
+
-
D
M
S
C
VUV = IUV x RLS
VOV = IOV x RLS
For RLS = 2 M
VUV = 100 VDC
VOV = 450 VDC
DCMAX@100 VDC = 78%
DCMAX@375 VDC = 38%
CONTROL
RLS
2 M
PI-2517-022604
DC
Input
Voltage
+
-
D
M
S
C
For RIL = 12 k
ILIMIT = 69%
CONTROL
RIL
See Figures 54b, 55b
and 56b for other resistor
values (RIL) to select
different ILIMIT values.
For RIL = 25 k
ILIMIT = 43%
Figure 4. Y/R/F Pkg Line Sense and Externally Set Current Limit.
Figure 5. P/G Package Line Sense.
Figure 6. P/G Package Externally Set Current Limit.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TOP248F- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248FN 功能描述:交流/直流開(kāi)關(guān)轉(zhuǎn)換器 155 W 85-265 VAC 205 W 230 VAC RoHS:否 制造商:STMicroelectronics 輸出電壓:800 V 輸入/電源電壓（最大值）:23.5 V 輸入/電源電壓（最小值）:11.5 V 開(kāi)關(guān)頻率:115 kHz 電源電流:1.6 mA 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SSO-10 封裝:Reel
TOP248FN- 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248FN-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
TOP248F-TL 制造商:POWERINT 制造商全稱:Power Integrations, Inc. 功能描述:TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
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