Shenzhen CXW Technology., Co Ltd
15 years of experience
Summary:
CX7527X is a high-performance multi-mode PWM flyback controller, which facilitates users to design high-performance AC/DC conversion switching power supplies with fewer peripheral components and lower system costs.
CX7527X provides extremely comprehensive and high-performance intelligent protection functions, including cycle by cycle overcurrent protection, overload protection, soft start, chip over temperature protection, VDD undervoltage locking protection, and VDD overvoltage locking protection.
CX7527X chip has the function of automatically identifying load size and adjusting working mode. Under full or heavy load conditions, the chip operates at a fixed frequency of 65KHz. When the load is reduced, the operating frequency of the chip decreases, effectively reducing switch losses. When the load is in extremely light or no-load conditions, the chip is in interval mode.
CX7527X is equipped with intelligent frequency jitter technology, which not only reduces the electromagnetic interference generated by the system in frequency reduction mode, but also effectively reduces output ripple The unique working mode of the chip minimizes audio energy and eliminates audio noise.
CX7527X provides a good design platform for cost-effective flyback switching power supply systems that require ultra-low standby power consumption.
Characteristic:
Standby power consumption less than 75mW at full voltage range (90Vac-265Vac) input
Built in soft start function
Built in line voltage compensation (OCP)
Intelligent dithering technology for improving electromagnetic interference
Full load fixed 65KHz switch frequency
Built in synchronous slope compensation
Ultra low starting current
High noise and anti-interference ability
Multi mode control
Accurate overload protection function
Cycle by cycle overcurrent protection function
VDD overvoltage protection, undervoltage lockout protection (UVLO)
No audio noise
Application:
Switched AC-DC power supply
PC peripheral power supply equipment
Intelligent small household appliances
Laptop auxiliary power supply
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