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TOP104YN Datasheet(PDF) 2 Page - Power Integrations, Inc.

Part # TOP104YN
Description  Three-terminal Off-line PWM Switch
Download  18 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP104YN Datasheet(HTML) 2 Page - Power Integrations, Inc.

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F
7 /09
2
TOP100-4
PI-1746-011796
SHUTDOWN/
AUTO-RESTART
PWM
COMPARATOR
CLOCK
SAW
OSCILLATOR
CONTROLLED
TURN-ON
GATE
DRIVER
INTERNAL
SUPPLY
5.7 V
4.7 V
SOURCE
S
R
Q
Q
DMAX
-
+
CONTROL
-
+
5.7 V
IFB
RE
ZC
VC
MINIMUM
ON-TIME
DELAY
+
-
VILIMIT
LEADING
EDGE
BLANKING
POWER-UP
RESET
R
S
Q
Q
÷ 8
0
1
THERMAL
SHUTDOWN
EXTERNALLY
TRIGGERED
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN
Figure 2. Functional Block Diagram.
Pin Functional Description
DRAIN Pin:
Output MOSFET drain connection. Provides internal bias
current during start-up operation via an internal switched high-
voltage current source. Internal current sense point.
CONTROL Pin:
Error amplifier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. Trigger input for latching
shutdown. It is also used as the supply bypass and auto-restart/
compensation capacitor connection point.
SOURCE Pin:
Output MOSFET source connection.
Primary-side circuit
common, power return, and reference point.
PI-1065A-110194
CONTROL
DRAIN
SOURCE (TAB)
TO-220/3 (YO3A)
Figure 3. Pin Configuration.


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