Datasheet > NCP1602

NCP1602

更新时间： 2024-09-18 00:55:39

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
23页	366K
描述
Enhanced, High-Efficiency Power Factor Controller

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NCP1602 数据手册

NCP1602

Enhanced, High-Efficiency

Power Factor Controller

The 6−pin PFC controller NCP1602 is designed to drive PFC boost

stages. It is based on an innovative Valley Synchronized Frequency

Fold−back (VSFF) method. In this mode, the circuit classically

www.onsemi.com

operates in Critical conduction Mode (CrM) when V

voltage

control

exceeds a programmable value V

. When V

is below this

ctrl,FF

control

preset level V

decays the frequency down to about 30 kHz until V

, the NCP1602 (versions [B**] and [D**]) linearly

ctrl,FF

TSOP−6

SN SUFFIX

reaches the

control

SKIP mode threshold. VSFF maximizes the efficiency at both

nominal and light load. In particular, the stand−by losses are reduced

to a minimum. Like in FCCrM controllers, internal circuitry allows

near−unity power factor even when the switching frequency is

reduced. Housed in a TSOP6 package, the circuit also incorporates the

features necessary for robust and compact PFC stages, with few

external components.

CASE 318G

MARKING DIAGRAM

XXX AYWG

General Features

• Near−Unity Power Factor

XXX

= Specific Device Code

= Assembly Location

= Year

= Work Week

= Pb−Free Package

• Critical Conduction Mode (CrM)

• Valley Synchronized Frequency Fold−back (VSFF): Low Frequency

Operation is Forced at Low Current Levels

• Works With or Without a Transformer w/ ZCD Winding (simple inductor)

(Note: Microdot may be in either location)

• On−time Modulation to Maintain a Proper Current Shaping in VSFF Mode

• Skip Mode at Very Low Load Current (versions[ B**] and [D**])

• Fast Line / Load Transient Compensation (Dynamic Response Enhancer)

• Valley Turn−on

PIN CONNECTIONS

VCTRL

GND

• High Drive Capability: −500 mA / +800 mA

• V Range: from 9.5 V to 30 V

CS / ZCD

DRV

• Low Start−up Consumption for:

[**C] & [**D] Versions: Low Vcc Start−up level (10.5 V)

[**A] & [**B] Versions: High Vcc Start−up level (17.0 V)

(Top View)

• Line Range Detection for Reduced Crossover Frequency Spread

• This is a Pb−Free Device

ORDERING INFORMATION

See detailed ordering, marking and shipping information in the

package dimensions section on page 2 of this data sheet.

Safety Features

Typical Applications

• PC Power Supplies

• Thermal Shutdown

• Non−latching, Over−Voltage Protection

• Second Over−Voltage Protection

• Lighting Ballasts (LED, Fluorescent)

• Flat TV

• Brown−Out Detection

• Soft−Start for Smooth Start−up Operation ([**C] &

[**D] Versions)

• All Off Line Appliances Requiring Power Factor

Correction

• Over Current Limitation

• Disable Protection if the Feedback Pin is Not Connected

• Low Duty−Cycle Operation if the Bypass Diode is

Shorted

• Open Ground Pin Fault Monitoring

Publication Order Number:

NCP1602/D

December, 2017 − Rev. 7

12 3 4 5 6 7...23

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NCP1602BEASNT1G	ONSEMI	获取价格	Enhanced, High-Efficiency Power Factor Controller
NCP1602DCCSNT1G	ONSEMI	获取价格	Enhanced, High-Efficiency Power Factor Controller
NCP1602DFCSNT1G	ONSEMI	获取价格	Enhanced, High-Efficiency Power Factor Controller
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