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參數(shù)資料
| 型號(hào)： | TOPP244R |
| 廠商： | Power Integrations, Inc. |
| 英文描述： | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| 中文描述： | 家庭擴(kuò)展的電源，設(shè)計(jì)靈活，集成的離線切換 |
| 文件頁(yè)數(shù)： | 4/48頁(yè) |
| 文件大?。?/td> | 771K |
| 代理商： | TOPP244R |
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TOP242-249
4
E
7/01
August 8, 2000
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 amplifier 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 or R package only)
Input pin for OV, UV, line feed forward with DC
reduction,
remote ON/OFF and synchronization. A connection to SOURCE
pin disables all functions on this pin.
EXTERNAL CURRENT LIMIT (X) Pin:
(Y or R package 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
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 or R package only)
Input pin for selecting switching frequency: 132 kHz if
Figure 3. Pin Configuration (top view).
PI-2509-040501
DC
Input
Voltage
+
-
D
M
S
C
V
UV
= I
UV
x R
LS
V
OV
=
I
OV
x
R
LS
For R
LS
= 2 M
V
UV
= 100 VDC
V
OV
=
450 VDC
DC
MAX
@100 VDC = 78%
DC
MAX
@375 VDC = 38%
CONTROL
R
LS
2 M
PI-2517-040501
DC
Input
Voltage
+
-
D
M
S
C
For R
IL
= 12 k
I
LIMIT
= 69%
CONTROL
R
IL
See fig. 55 for other
resistor values (R
IL
)
to select different
I
LIMIT
values
For R
IL
= 25 k
I
LIMIT
= 43%
X
PI-2629-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
R
IL
12 k
R
LS
2 M
V
UV
= I
UV
x R
LS
V
OV
=
I
OV
x
R
LS
For R
LS
= 2 M
V
UV
= 100 VDC
V
OV
= 450 VDC
DC
MAX
@100 VDC = 78%
DC
MAX
@375 VDC = 38%
For R
= 12 k
I
LIMIT
= 69%
See fig. 55 for other
resistor values (R
IL
)
to select different I
LIMIT
values
Figure 4. Y/R Package Line Sense and Externally Set Current
Limit.
Figure 5. P/G Package Line Sense.
Figure 6. P/G Package Externally Set Current Limit.
connected to SOURCE pin and 66 kHz if connected to
CONTROL pin. The switching frequency is internally set for
fixed 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-2724-033001
Tab Internally
Connected to
SOURCE Pin
Y Package (TO-220-7C)
C
D
S
S
S
S
1
C
3
X
2
L
5
4
F
7
D
M
P Package (DIP-8B)
G Package (SMD-8B)
R Package
(TO-263-7C)
8
5
7
1
1 2 3 4 5
C L X S F
7
D
4
2
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TOP249R | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| TOP249Y | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| TOP242-249 | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| TOP242G | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| TOP242P | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
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