TOP414G Power Integrations, TOP414G Datasheet - Page 2

IC SW PWM DC-DC 48VDC 12W 8SMD

TOP414G

Manufacturer Part Number
TOP414G
Description
IC SW PWM DC-DC 48VDC 12W 8SMD
Manufacturer
Power Integrations
Series
TOPSwitch®r
Type
Step-Down (Buck), Step-Up (Boost), Flyback, Forward Converterr
Datasheet

Specifications of TOP414G

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Frequency - Switching
120kHz
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SMD Gull Wing
Output Voltage
5.8 V
Input / Supply Voltage (max)
265 VAC
Input / Supply Voltage (min)
85 VAC
Duty Cycle (max)
70 %
Switching Frequency
120 KHz
Supply Current
1.4 mA
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output
-
Voltage - Output
-
Voltage - Input
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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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.
2
TOP412/414
CONTROL
A
4/99
R E
Z C
SHUNT REGULATOR/
I FB
ERROR AMPLIFIER
OSCILLATOR
V C
CLOCK
D MAX
SAW
+
-
5.7 V
EXTERNALLY
TRIGGERED
SHUTDOWN
SHUTDOWN
COMPARATOR
5.7 V
4.7 V
THERMAL
PWM
+
-
AUTO-RESTART
SHUTDOWN/
+
-
POWER-UP
RESET
0
1
INTERNAL
SUPPLY
R
S
÷ 8
Figure 3. Pin Configuration.
Q
Q
S
R
CONTROL
Q
Q
SOURCE
SOURCE
SOURCE
G Package (SMD-8)
2
1
3
4
BLANKING
LEADING
EDGE
CONTROLLED
TURN-ON
DRIVER
GATE
8
6
5
7
+
-
MINIMUM
ON-TIME
SOURCE (HV RTN)
SOURCE (HV RTN)
SOURCE (HV RTN)
DRAIN
DELAY
V I
LIMIT
PI-1746-011796
PI-2208-120798
DRAIN
SOURCE

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