NCP1216AD100R2G(2010) 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1216AD100R2G
(Rev.:2010)

PWM Current-Mode Controller for High-Power Universal Off-Line Supplies

ON Semiconductor 

NCP1216, NCP1216A

PWM Current-Mode

Controller for High-Power

Universal Off-Line Supplies

Housed in a SOIC−8 or PDIP−7 package, the NCP1216 represents

an enhanced version of NCP1200 based controllers. Due to its high

drive capability, NCP1216 drives large gate−charge MOSFETs, which

together with internal ramp compensation and built−in 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−voltage 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−mode control also provides an excellent input audio

susceptibility and inherent pulse−by−pulse control. Internal ramp

compensation easily prevents sub−harmonic 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−called

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 restart. Once the default

has gone, the device auto−recovers.

Features

• No Auxiliary Winding Operation

• Current−Mode Control with Adjustable Skip−Cycle Capability

• Internal Ramp Compensation

• Limited Duty Cycle to 50% (NCP1216A Only)

• Internal 1.0 ms Soft−Start (NCP1216A Only)

• Built−In Frequency Jittering for Better EMI Signature

• Auto−Recovery Internal Output Short−Circuit Protection

• Extremely Low No−Load Standby 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−to−Pin Compatible with NCP1200 Series

• These are Pb−Free and Halide−Free Devices

Typical Applications

• High Power AC−DC Converters for TVs, Set−Top Boxes, etc.

• Offline Adapters for Notebooks

• Telecom DC−DC Converters

• All Power Supplies

http://onsemi.com

MARKING

DIAGRAMS

8

1

SOIC−8

D SUFFIX

CASE 751

8

16XXX

ALYW

G

1

PDIP−7

P SUFFIX

CASE 626B

P1216XXXX

AWL

YYWWG

1

XXXX = Specific Device Code

A

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

G or G = Pb−Free Package

DEVICE MARKING INFORMATION

See detailed device marking information in the ordering

information section on page 16 of this data sheet.

PIN CONNECTIONS

Adj 1

FB 2

CS 3

Gnd 4

8 HV

7 NC

6 VCC

5 Drv

ORDERING INFORMATION

See detailed ordering and shipping information in the ordering

information section on page 16 of this data sheet.

© Semiconductor Components Industries, LLC, 2010

1

December, 2010 − Rev. 13

Publication Order Number:

NCP1216/D

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