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NCP1651 Datasheet(PDF) 4 Page - ON Semiconductor

Part # NCP1651
Description  Power Factor Controllers
Download  6 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1651 Datasheet(HTML) 4 Page - ON Semiconductor

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background image
No
Yes
Variable
toff
Resonant
Quasi-
Resonant
EMI
Troubling?
Need higher
efficiency?
Operating
Mode
No
Yes
Do you
need low
Standby
power?
Low End
High End
Please visit our website at www.onsemi.com for additional options.
What
features
do you
need?
No
Yes
Is Your Input
Power Above
25 W?
Page 4
Variable Frequency Controllers
Minimum EMI, Maximum Efficiency. . .
ON Semiconductor’s variable frequency controllers include quasi-resonant and resonant controllers.
These controllers are used respectively in critical conduction mode quasi-resonant flyback converters
and half bridge resonant LLC converters. These topologies minimize EMI radiation, provide better
magnetic utilization and offer excellent power conversion efficiency - up to 90%. Our variable
frequency controllers combine the advantages of working directly off-line (with our proprietary
VHVIC technology) with the ability to drive an external high-voltage MOSFET of your choice, and
offer you more design flexibility than our competitors.
Key Features & Benefits
EMI
Filter
AC
OPTO-1
OPTO-1
Voltage Feedback
Over Voltage
Protection
OPTO-2
12 V
SMPS
MOSFET
NCP1337
SMPS
Controller
NTP75N06
Synchronous
Rectification
Circuitry
Flyback Quasi-Resonant
Controller Technology
for Increased Efficiency
and Lower EMI
12V
12V
TL431
OPTO-2
12V
VARIABLE
FREQUENCY
CONTROLLERS
Device
Max
Output
Power1
(W)
Mode
Standby
Power
Method
Output
Gate
Drive
(mA) @
VCC = 11V
Max
Switching
Frequency
(kHz)
Package(s)
NCP1215A
10
Current, Var toff
Freq Foldback
30
Adjustable
4
4
SO-8, TSOP-6
NCP1351
50
Current, Var toff
Freq Foldback
150
65
4
4
4
4
SO-8
NCP1205
150
Current
Freq Foldback
300
Adj., Default 125
4
4
4
SO-16, PDIP-8, PDIP-14
NCP1207A
150/1001
Current
Adj Skip Cycle
500
Set by Min, Toff = 8µs
4
4
4
4
4
4
SO-8, PDIP-8
NCP1308
150
Current
Adj Skip Cycle
500
Set by Min, Toff = 10µs
4
4
4
4
4
4
SO-8
NCP1337
200
Current
Adj Skip Cycle
500
130
4
4
4
4
4
4
4
4
SO-7, PDIP-7
NCP1377/B
150
Current
Adj Skip Cycle
500
Set by Min, Toff = 3 or 8µs
4
4
4
4
4
SO-7, PDIP-7
NCP1378
150
Current
Adj Skip Cycle
500
Set by Min, Toff = 8µs
4
4
4
4
4
SO-7, PDIP-7
NCP1381
200
Current
Adj Skip Cycle
500
125
4
4
4
4
4
4
SO-14
NCP1395
500
Voltage
Adj Skip Cycle
180
1000
4
4
4
4
4
4
SOIC-16, PDIP-16
1. Maximum Power Output with DSS 2. Overvoltage Protection 3. Over Power Compensation
A 60 W Power Adapter
Using NCP1337
~
Quasi-resonant mode valley switching
i
Minimizes EMI
i
Reduces switching losses
~
High-voltage start-up-current source
i
Offers clean loss-less start-up sequence
~
Dynamic Self Supply (DSS) capability
i
Simplifies transformer design
~
Adjustable skip-mode and Soft-Skip™ capability
i
No acoustic noise generation
~
Gate drive capability up to 500 mA
i
Gives flexibility in choosing external MOSFET
~
Over-current and over-voltage protection
i
Protects circuitry
~
Over-power compensation


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