Shenzhen CXW Technology., Co Ltd
15 years of experience
+86 19166254725 Chinese
Search for the model you want?
Secondary feedback
HOME>PRODUCTS>AC-DC power supply chip>Secondary feedback

  • 型 号 :

    CX718

  • 待机功耗 :

    ＜75mW

  • 工作模式 :

    DCM&CCM

  • 控制方式 :

    External Drive Sic

  • 应 用 :

    Full Voltage ≤100W Power Adapter, PD, QC Charger

  • 封 装 :

    SOT23-6
样品申领
产品规格书下载

CATEGORY
  • 产品详情

Overview

CX718 is a high‑performance current‑mode PWM controller for off‑line flyback converters. It features microampere‑level start‑up current and extremely low standby power consumption.

CX718 integrates a current‑steering charge pump for adaptive gate‑drive speed adjustment. It can directly drive power SiC MOSFETs with different Qg values without series resistors for drive‑speed tuning.

CX718 adopts resistor‑based start‑up architecture. The maximum VDD supply voltage of the chip can reach 80 V, making it suitable for wide‑output‑voltage applications. Its maximum switching frequency is 130 kHz. Both peak‑current jitter and frequency‑jitter functions are implemented to optimize EMI performance. The device supports green energy‑saving mode and hiccup mode, with standby power consumption lower than 75 mW.

CX718 provides comprehensive protection functions to ensure reliable system operation, including cycle‑by‑cycle current limiting (OCP), overload protection (OLP), under‑voltage lockout (UVLO), VDD over‑voltage protection (VDD OVP), over‑temperature protection (OTP), CS‑pin open‑circuit protection (SCB), built‑in soft‑start, leading‑edge blanking (LEB), and internal slope compensation.


Features

● Low start‑up current; standby power consumption ＜75 mW 

● Ultra‑wide VDD supply range: 9.5 V ~ 82 V 

● Soft‑start function 

● Frequency jitter and peak‑current jitter 

● Light‑load hiccup mode with noise optimization 

● Adaptive soft‑drive function 

● Leading‑edge blanking (LEB) 

● Built‑in slope compensation 

● Integrated auto‑recovery protections:
 

  ‑ Cycle‑by‑cycle current limiting (OCP)
 

  ‑ Overload protection (OLP)
 

  ‑ Input under‑voltage lockout (UVLO)
 

  ‑ VDD over‑voltage protection (VDD OVP)
 

  ‑ On‑chip over‑temperature protection (OTP)
 

  ‑ Leading‑edge blanking (LEB)
 

  ‑ CS‑pin open‑circuit protection (SCB) 

● Package: SOT23‑6


Applications

● Chargers and adapters 

● Set‑top boxes 

● Open‑frame power supplies


产品标签 :
推荐产品
#
Details
CX7538BS

CX7538BS is a high-performance secondary side synchronous rectification control circuit for switch-mode power <br/><br/>supplies. It easily meets the Level VI energy efficiency requirements in low-voltage, high-current switch-mode power <br/><br/>supply applications, making it an ideal solution for ultra-low forward voltage drop rectification devices. It also supports <br/><br/>various operating modes of switch-mode power supplies, such as CCM, QR , and DCM . Its extremely low forward <br/><br/>voltage drop results in much less conduction loss compared to Schottky diodes, greatly improving the system's <br/><br/>conversion efficiency and significantly reducing the temperature of the rectification device.<br/><br/><br/><br/>The CX7538BS chip features an NMOSFET synchronous rectification switch with a built-in voltage tolerance of 60V <br/><br/>and an extremely low internal resistance, with a typical RdsON as low as 12mΩ, providing the system with an output <br/><br/>capability up to 4A. The chip determines its switching state by detecting the source-drain voltage of the built-in <br/><br/>MOSFET, making it compatible with flyback converters in continuous mode, discontinuous mode, and quasi-resonant <br/><br/>operation modes.

#
Details
CX78GD024E

Overview
The CX78GD024E is a quasi-resonant flyback power conversion chip with integrated D-GaN, designed for isolated flyback switching power supplies targeting high performance, low standby power, low cost, and high efficiency within 68W.
 ...

#
Details
CX8831CA

OverviewCX8831CA is a synchronous step‑down converter integrating multiple fast‑charging protocols. It supports USB Type‑C, PD3.2 and PPS protocols, Qualcomm QC2.0/3.0/3.0+, Huawei FCP/SCP/HVSCP, VOOC, MediaTek PE2.0, Samsung AFC, USB BC1.2 DCP, and Apple...

#
Details
8831C

OverviewThe 8831C is a synchronous step‑down converter integrating multiple fast‑charging protocols. It supports USB Type‑C, PD3.2 and PPS protocols, Qualcomm QC2.0/3.0/3.0+, Huawei FCP/SCP/HVSCP, VOOC, MediaTek PE2.0, Samsung AFC, USB BC1.2 DCP, and Appl...

#
Details
CX8823B

Overview <br/>The CX8823B is a feature-rich, high-performance, highly reliable DC-DC buck converter. <br/>The CX8823B has a wide input voltage range with a maximum input voltage of up to 32V. It integrates power MOSFETs, including an 80mΩ high-s...

#
Details
CX72GD048H

Overview<br/>The CX72GDXXXH series is a high-performance quasi-resonant primary-side regulated power supply IC with high-precision constant voltage (CV) and constant current (CC) output, featuring a b...

#
Details
CX78GD032E

Overview<br/>The CX78GD032E is a quasi-resonant flyback power conversion chip with integrated D-GaN, designed for isolated flyback switching power supplies targeting high performance, low standby power, low cost, and high efficiency within 48W.<br/> ...

#
Details
CX78GD048H

Overview<br/>The CX78GD048H is a quasi-resonant flyback power conversion chip with integrated D-GaN, designed for isolated flyback switching power supplies targeting high performance, low standby power, low cost, and high efficiency within 36W.<br/> ...

#
Details
CX75GD080BL

Overview<br/>The CX75GD080BL is a high-frequency, high-performance quasi-resonant AC-DC power switch with an integrated high-voltage GaNFET power device. It is designed for isolated flyback switching power supplies targeting high performance, low sta...



HOME

PRODUCT

ABOUT

CONTACT