DAP018x Marking, DAP018FDR2G datasheet(1/28 Pages) ONSEMI

Part #	DAP018FDR2G

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

PDF	28 Pages

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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July, 2009 − Rev. 0

1

Publication Order Number:

DAP018/D

Customer Specific Device from ON Semiconductor

PWM Current-Mode

Controller for High-Power

Universal Off-Line Supplies

Housed in a SO−14 package, the DAP018X represents an

enhanced version of the currently available Speedking

controller, the DAP011.

With an internal structure operating at a fixed 65 kHz or

100 kHz frequency, the controller directly connects to the

high−voltage rail for a lossless and clean startup sequence.

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. On top of these features, the device takes

advantage of the auxiliary winding negative swing to let the

user adjust the maximum power the converter can deliver in

high line conditions (OPP).

When the current setpoint falls below a given value, e.g.

the output power demand diminishes, the IC automatically

freezes the peak current and reduces its switching frequency

down to 25 kHz. At this point, if further output power

reduction occurs, the controller enters skip−cycle.

The DAP018X features an efficient protective circuitry

which, in presence of an overcurrent condition, disables the

output pulses while the device enters a safe burst mode,

trying to re−start. Once the fault has gone, the device

auto−recovers. By implementing a timer to acknowledge a

fault condition, independently from the auxiliary supply, the

designer’s task is eased when stringent fault mode

conditions need to be met.

A dedicated input helps triggering a latch−off circuitry

which permanently disables output pulses, for instance to

implement an over voltage protection (OVP). A separate

input accepts a direct NTC connection to ground for a simple

and efficient over temperature protection (OTP).

Features

• Fixed−frequency 65 kHz (A and B versions) or 100 kHz

(C and D versions) Current−mode Control Operation

• Internal and Adjustable Over Power Protection (OPP)

Circuit

• Frequency Foldback down to 25 kHz and Skip−cycle in

Light Load Conditions

• Reduced Internal Bias Currents for Improved Standby

Performance

• Adjustable Brown−out Protection (B and D versions)

• Internal Ramp Compensation

• Internal Fixed 5 ms Soft−Start

• Adjustable Frequency Jittering for Better EMI Signature

• Auto−recovery internal output short−circuit protection

for A, B, C and D versions. F is latched

• Adjustable Timer for Improved Short−circuit Protection

• OTP and OVP Inputs for Improved Robustness

• +500 mA / −800 mA Peak Current Capability

• Up to 28 V VCC Operation

• Improved Creepage Distance between High−voltage

and Adjacent Pin

• Extremely Low No−load Standby Power

• This is a Pb−Free Device

• This Device uses Halogen−Free Molding Compound

Typical Applications

• High Power ac−dc Converters for TVs, Set−top Boxes etc.

• Offline Adapters for Notebooks

MARKING

DIAGRAM

PIN CONNECTIONS

SOIC−14

D SUFFIX

CASE 751A

(Top View)

1

14

DAP018x

AWLYWWG

1

14

x

= Device Version

A

= Assembly Location

WL

= Wafer Lot

Y

= Year

WW

= Work Week

G

= Pb−Free Package

CTimer

OVP

OPP

Jittering

Fold

FB

CS

1

2

3

4

5

6

7

14

13

12

11

10

9

8

HV

NC

OTP

BO(B&D)

VCC

DRV

GND

†For information on tape and reel specifications, including part

orientation and tape sizes, please refer to our Tape and Reel

Packaging Specifications Brochure, BRD8011/D.

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

See detailed ordering and shipping information in the package

dimensions section on page 3 of this data sheet.

ORDERING INFORMATION

DAP018A/B/C/D/F

Similar Description - DAP018FDR2G

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