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T0P246Y View Datasheet(PDF) - Power Integrations, Inc

Part NameDescriptionManufacturer
T0P246Y TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher Power-Integrations
Power Integrations, Inc Power-Integrations
T0P246Y Datasheet PDF : 52 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
TOP242-250
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, R or F package only)
Input pin for OV, UV, line feed forward with DCMAX reduction,
remote ON/OFF and synchronization. Aconnection to SOURCE
pin disables all functions on this pin.
EXTERNALCURRENTLIMIT(X) Pin: (Y, R orFpackage
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
DCMAX 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).
Y Package (TO-220-7C)
Tab Internally
7D
Connected to
5F
SOURCE Pin
4S
3X
2L
1C
R Package (TO-263-7C)
F Package (TO-262-7C)
P Package (DIP-8B)
G Package (SMD-8B)
M1
S2
8S
7S
S3
C4
5D
1234 5 7
C L X S F D PI-2724-010802
Figure 3. Pin Configuration (top view).
4
M
12/04
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
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.
+
DC
Input
Voltage
-
VUV = IUV x RLS
VOV = IOV x RLS
RLS 2 MFor RLS = 2 M
VUV = 100 VDC
VOV = 450 VDC
D
L
DCMAX@100 VDC = 78%
CONTROL DCMAX@375 VDC = 38%
C
S
X
For RIL = 12 k
ILIMIT = 69%
RIL
12 k
See Figure 54b for
other resistor values
(RIL) to select different
ILIMIT values
Figure 4. Y/R/F Pkg Line Sense and Externally Set Current Limit.
+
DC
Input
Voltage
VUV = IUV x RLS
VOV = IOV x RLS
RLS
2 MFor RLS = 2 M
VUV = 100 VDC
VOV = 450 VDC
DCMAX@100 VDC = 78%
D
M
DCMAX@375 VDC = 38%
CONTROL
C
-
S
Figure 5. P/G Package Line Sense.
PI-2509-040501
+
DC
Input
Voltage
RIL
For RIL = 12 k
ILIMIT = 69%
For RIL = 25 k
ILIMIT = 43%
See Figures 54b, 55b
and 56b for other resistor
D
M
values (RIL) to select
different ILIMIT values.
CONTROL
C
-
S
PI-2517-022604
Figure 6. P/G Package Externally Set Current Limit.
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