Datasheet > NCP1568

NCP1568

更新时间： 2024-11-11 02:52:23

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
42页	823K
描述
AC-DC Active Clamp Flyback PWM IC

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NCP1568 数据手册

AC-DC Active Clamp

Flyback PWM IC

NCP1568

The NCP1568 is a highly integrated ac−dc PWM controller

designed to implement an active clamp flyback topology. NCP1568

employs a proprietary variable frequency algorithm to enable zero

voltage switching (ZVS) of Super−Junction or GaN FETs across line,

load, and output conditions. The ZVS feature increases power density

of a power converter by increasing the operating frequency while

achieving high efficiency. The Active Clamp Flyback (ACF)

operation simplifies EMI filter design to avoid interference with other

sensitive circuits in the system. The NCP1568 features a HV startup

circuit, a strong low side driver, and a 5 V logic level driver for the

active clamp FET. The NCP1568 is suitable for a variety of

applications including ac−dc adapters, industrial, telecom, lighting,

and other applications where power density is an important

requirement.

The NCP1568 also features multimode operation and transitions

from ACF mode to Discontinuous Conduction Mode (DCM) to meet

regulatory requirements from around the world. The NCP1568 further

implements skip in standby mode, resulting in excellent standby

power. The combination of flexible control scheme and user

programmable features allow the use of NCP1568 with

Super−Junction MOSFETs (Si) and Gallium Nitride (GaN) FETs.

www.onsemi.com

MARKING DIAGRAM

1568

XXX

ALYWG

TSSOP−16

DT SUFFIX

CASE 948BW

1568

XXX

= Specific Device Code

= Specific Variant

= (S02, G03, G04)

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

Features

• Topology and Control Scheme

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

♦ Active Clamp Flyback Topology Aids in ZVS

♦ Proprietary Multi−Mode Operation to Enhance Light Load

Efficiency

♦ Proprietary Adaptive ZVS Allows High Frequency Operation

while Reducing EMI

♦ Inbuilt Adaptive Dead−Time for Both Main and Active Clamp

FETs

♦ Peak Current−Mode Control with Inbuilt Slope Compensation

with Options

Features (Continued)

• Oscillator

♦ Programmable Frequency from

100 kHz to 1 MHz

♦ Flexible Control Scheme and Programmability Allow for

Configuration with Either External Silicon or GaN FETs

♦ Internal Soft−Start Timer with 4

Options

• DCM and Light Load Operation

♦ Customer Programmable Optional Transition to DCM

♦ Integrated Frequency Foldback with Minimum Frequency

Clamp for Highest Performance in Standby Mode

♦ Minimum Frequency Clamp and Quiet Skip Eliminates

Audible Noise

• Protection

♦ Dedicated FLT Pin Compatible with

a Thermistor

♦ Adjustable Over Power Protection

(OPP)

♦ Option for Auto−Recovery and Latched

in Various Faults

♦ Standby Power < 30 mW

♦ Internal Thermal Shutdown

• Integrated HV and Startup Circuits

♦ 700 V Startup Circuit

Applications

♦ AC Line Brownout Detect

• USB Power Delivery

• Notebook Adapters

• High Density Chargers

• Industrial Power Supplies

• Drivers

♦ 0.85 A/1.5 A Source/Sink for Low Side

♦ 65 mA/150 mA Active Clamp Driver Output

Publication Order Number:

July, 2020 − Rev. 4

NCP1568/D

12 3 4 5 6 7...42

中文翻译

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NCP1568G03DBR2G	ONSEMI	获取价格	AC-DC Active Clamp Flyback PWM IC
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NCP1568S02DBR2G	ONSEMI	获取价格	AC-DC Active Clamp Flyback PWM IC
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