Shenzhen CXW Technology., Co Ltd
15 years of experience
CX7172D is a current‑mode PWM control chip designed for flyback solutions with power rating up to 100 W. It operates at a fixed internally‑trimmed switching frequency under PWM mode. At no‑load or light‑load conditions, the operating frequency is adjusted internally by the IC. The chip supports green‑mode operation to reduce light‑load power loss and improve overall system efficiency.
It requires only tiny current during startup and normal operation. A large‑value resistor can be adopted in the start‑up circuit to further lower standby power consumption. Integrated slope compensation circuitry prevents sub‑harmonic oscillation under high‑duty‑cycle conditions and enhances system stability. Built‑in leading‑edge blanking (LEB) eliminates interference caused by diode reverse‑recovery current from the snubber network.
CX7172D adopts frequency‑jittering technology to effectively improve system EMI performance. The frequency‑hopping range is set above the audio band (22 kHz) to avoid audible noise during operation.
Multiple protections are integrated inside CX7172D, including cycle‑by‑cycle over‑current protection (OCP), VDD over‑voltage protection (VDD OVP), VDD over‑voltage clamping, under‑voltage lockout (UVLO), and over‑temperature protection (OTP). Its internal soft‑driving architecture further optimizes system EMI characteristics.
• Standby power consumption less than 75 mW for full‑range AC input (90 Vac‑265 Vac)
• Built‑in soft‑start to mitigate Vds stress on power MOSFET
• Frequency‑jittering function for improved EMI performance
• Frequency‑hopping mode for higher light‑load efficiency and reduced standby power
• Fixed 65 kHz switching frequency
• Integrated synchronous slope compensation
• Low start‑up current and low operating current
• Built‑in Leading‑Edge Blanking (LEB)
• Built‑in Over‑Load Protection (OLP)
• Cycle‑by‑cycle Over‑Current Protection (OCP)
• VDD over‑voltage protection, under‑voltage lockout (UVLO), and VDD voltage clamping
• Secondary‑side output diode short‑circuit protection
• Over‑Temperature Protection (OTP)
• Package: SOT23‑6
• Battery chargers
• Power adapters for PDA, digital cameras and camcorders
• Set‑top box power supplies
• Open‑frame switching power supplies
• Auxiliary power supplies for personal computers
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&#039;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.
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.
...
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...
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...
Overview &lt;br/&gt;The CX8823B is a feature-rich, high-performance, highly reliable DC-DC buck converter. &lt;br/&gt;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...
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...
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/> ...
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/> ...
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...
Leaving a messagePlease leave a message here and we will reply to you as soon as possible
IPv6 network supported
+86 19166254725
Chinese
