NCV1072集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)規(guī)格書PDF中文資料

NCV1072屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由安森美半導(dǎo)體公司制造生產(chǎn)的NCV1072AC DC 轉(zhuǎn)換器，離線開關(guān)該系列是元器件級(jí)控制產(chǎn)品，用于構(gòu)建將交流市電轉(zhuǎn)換為直流電（通常電壓大幅降低）的設(shè)備。集成和未集成系統(tǒng)主要開關(guān)元件的器件均包括在內(nèi)。由于高輸入輸出電壓比，以及此類系統(tǒng)中通常需要隔離，這些器件通常與外部變壓器配合使用。盡管通常使用定制變壓器來實(shí)現(xiàn)此用途，但也有許多專門用于此用途的庫存產(chǎn)品，請(qǐng)參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

The NCV107x products integrate a fixed frequency current mode

controller with a 670 V MOSFET. Available in a PDIP?7 package, the

NCV107x offer a high level of integration, including soft?start,

frequency?jittering, short?circuit protection, skip?cycle, a maximum

peak current set point, ramp compensation, and a Dynamic

Self?Supply (eliminating the need for an auxiliary winding).

Unlike other monolithic solutions, the NCV107x is quiet by nature:

during nominal load operation, the part switches at one of the available

frequencies (65, 100 or 130 kHz). When the output power demand

diminishes, the IC automatically enters frequency foldback mode and

provides excellent efficiency at light loads. When the power demand

reduces further, it enters into a skip mode to reduce the standby

consumption down to a no load condition.

Protection features include: a timer to detect an overload or a

short?circuit event, Overvoltage Protection with auto?recovery and

AC input line voltage detection.

For improved standby performance, the connection of an auxiliary

winding stops the DSS operation and helps to reduce input power

consumption below 50 mW at high line.

Features

? Built?in 670 V MOSFET with RDS(on) of 4.7  (NCV1076/77) /

11  (NCV1072/75)

? Large Creepage Distance Between High?voltage Pins

? Current?Mode Fixed Frequency Operation – 65 / 100 / 130 kHz

? Peak Current: NCV1072 with 250 mA, NCV1075 with 450 mA,

NCV1076 with 650 mA and NCV1077 with 800 mA

? Fixed Ramp Compensation

? Skip?Cycle Operation at Low Peak Currents Only: No Acoustic

Noise!

? Dynamic Self?Supply: No Need for an Auxiliary Winding

? Internal 1 ms Soft?Start

? Auto?Recovery Output Short Circuit Protection with

Timer?Based Detection

? Auto?Recovery Overvoltage Protection with Auxiliary

Winding Operation

? Frequency Jittering for Better EMI Signature, Including

Frequency Foldback Mode

? No Load Input Consumption < 50 mW

? Options With or Without Brown?in Function Available

? Frequency Foldback to Improve Efficiency at Light

Load

? Internal Temperature Shutdown

? NCV Prefix for Automotive and Other Applications

Requiring Unique Site and Control Change

Requirements; AEC?Q100 Qualified and PPAP

Capable

? These Devices are Pb?Free, Halogen Free/BFR Free

and are RoHS Compliant

Typical Applications

? Auxiliary & Standby Isolated Power Supplies for

HEV/EV