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NCP1395 Datasheet, PDF (1/27 Pages) ON Semiconductor – High Performance Resonant Mode Controller | |||
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NCP1395A/B
High Performance Resonant
Mode Controller
The NCP1395A/B offers everything needed to build a reliable and
rugged resonant mode power supply. Its unique architecture includes
a 1.0 MHz Voltage Controller Oscillator whose control mode brings
flexibility when an ORing function is a necessity, e.g. in multiple
feedback paths implementations. Protections featuring various
reaction times, e.g. immediate shutdown or timerâbased event,
brownâout, broken optocoupler detection etc., contribute to a safer
converter design, without engendering additional circuitry
complexity. An adjustable deadtime also helps lowering the
shootâthrough current contribution as the switching frequency
increases.
Finally, an onboard operational transconductance amplifier allows
for various configurations, including constant output current working
mode or traditional voltage regulation.
Features
⢠High Frequency Operation from 50 kHz up to 1.0 MHz
⢠Selectable Minimum Switching Frequency with "3% Accuracy
⢠Adjustable Deadtime from 150 ns to 1.0 ms
⢠Startup Sequence via an Adjustable SoftâStart
⢠BrownâOut Protection for a Simpler PFC Association
⢠Latched Input for Severe Fault Conditions, e.g. Overtemperature
or OVP
⢠TimerâBased Input with AutoâRecovery Operation for Delayed
Event Reaction
⢠Enable Input for Immediate Event Reaction or Simple ON/OFF
Control
⢠Operational Transconductance Amplifier (OTA) for Multiple
Feedback Loops
⢠VCC Operation up to 20 V
⢠Low Startup Current of 300 mA Max
⢠Common Collector Optocoupler Connection
⢠Internal Temperature Shutdown
⢠B Version Features 10 V VCC Startup Threshold for Auxiliary
Supply Usage
⢠Easy NoâLoad Operation and Low Standby Power Due to
Programmable SkipâCycle
⢠These are PbâFree Devices*
Typical Applications
⢠LCD/Plasma TV Converters
⢠High Power AcâDC Adapters for Notebooks
⢠Industrial and Medical Power Sources
⢠Offline Battery Chargers
http://onsemi.com
MARKING
DIAGRAMS
16
1
PDIPâ16
P SUFFIX
CASE 648
16
NCP1395xP
AWLYYWWG
1
16
1
SOâ16
D SUFFIX
CASE 751B
1395xDR2G
AWLYWW
x
A
WL
YY, Y
WW
G
= A or B
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
PIN CONNECTIONS
Fmin 1
Fmax 2
DT 3
Css 4
FB 5
Ctimer 6
BO 7
AGnd 8
16 NINV
15 Out
14 Slow Fault
13 Fast Fault
12 Vcc
11 B
10 A
9 PGnd
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 25 of this data sheet.
*For additional information on our PbâFree strategy
and soldering details, please download the ON
Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
1
March, 2006 â Rev. 1
Publication Order Number:
NCP1395/D
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