NCP1216
PWM Current鈭扢ode
Controller for High鈭扨ower
Universal Off鈭抣ine Supplies
Housed in a SO鈭? or DIP7 package, the NCP1216 represents an
enhanced version of NCP1200鈭抌ased controllers. Due to its high drive
capability, NCP1216 drives large gate鈭抍harge MOSFETs, which
together with internal ramp compensation and built鈭抜n frequency
jittering, ease the design of modern AC/DC adapters.
With an internal structure operating at different fixed frequencies,
the controller supplies itself from the high鈭抳oltage rail, avoiding the
need of an auxiliary winding. This feature naturally eases the designer
task in some particular applications, e.g. battery chargers or TV sets.
Current鈭抦ode control also provides an excellent input
audio鈭抯usceptibility and inherent pulse鈭抌y鈭抪ulse control. Internal
ramp compensation easily prevents sub鈭抙armonic oscillations from
taking place in continuous conduction mode designs.
When the current setpoint falls below a given value, e.g. the output
power demand diminishes, the IC automatically enters the so鈭抍alled
skip cycle mode and provides excellent efficiency at light loads.
Because this occurs at a user adjustable low peak current, no acoustic
noise takes place.
The NCP1216 features an efficient protective circuitry, which in
presence of an over current condition disables the output pulses while
the device enters a safe burst mode, trying to re鈭抯tart. Once the default
has gone, the device auto鈭抮ecovers.
Features
http://onsemi.com
MINIATURE PWM
CONTROLLER FOR HIGH
POWER AC/DC WALL
ADAPTERS AND OFFLINE
BATTERY CHARGERS
MARKING
DIAGRAMS
8
SO鈭?
D SUFFIX
CASE 751
1
16Dyy
ALYW
PDIP鈭?
P SUFFIX
CASE 626B
1
P1216Pxxx
AWL
YYWW
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No Auxiliary Winding Operation
Current鈭扢ode Control with Adjustable Skip鈭扖ycle Capability
Internal Ramp Compensation
Built鈭捍n Frequency Jittering for Better EMI Signature
Auto鈭扲ecovery Internal Output Short鈭扖ircuit Protection
Extremely Low No鈭扡oad Stand鈭払y Power
500 mA Peak Current Capability
Fixed Frequency Versions at 65 kHz, 100 kHz, 133 kHz
Internal Temperature Shutdown
Direct Optocoupler Connection
SPICE Models Available for TRANsient and AC Analysis
Pin鈭抰o鈭扨in Compatible with NCP1200 Series
xxx
yy
= Specific Device Code: 065, 100 or 133
= Specific Device Code
(06 for 65, 10 for 100, 13 for 133)
A
= Assembly Location
WL, L = Wafer Lot
YY, Y
= Year
WW, W = Work Week
PIN CONNECTIONS
Adj 1
FB 2
CS 3
Gnd 4
8 HV
7 NC
6 V
CC
5 Drv
Typical Applications
High Power AC/DC Converters for TVs, Set鈭扵op Boxes, etc.
Offline Adapters for Notebooks
Telecom DC鈭扗C Converters
All Power Supplies
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
漏
Semiconductor Components Industries, LLC, 2004
1
February, 2004 鈭?Rev. 5
Publication Order Number:
NCP1216/D
NCP1216/D相關(guān)型號PDF文件下載
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