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MengziSP6538FB
Category:
MengziWuxi Silicon Power Microelectronics
MengziIntegrated circuit management chip
Product Description
SP6538FB is a high-performance synchronous rectifier control circuit for secondary-side switching power supplies. In low-voltage, high-current switching power supply applications, it easily meets Tier 6 energy efficiency requirements and is an ideal solution for ultra-low conduction voltage drop rectifier devices. The chip supports switching frequencies up to 150kHz and supports switching power supply operating modes such as CCM/QR/DCM. The extremely low conduction voltage drop results in significantly lower power loss compared to Schottky diodes, greatly improving system conversion efficiency and significantly reducing rectifier device temperature.
The chip integrates an 80V NMOSFET synchronous rectifier switch with very low internal resistance, a typical RdsON as low as 10mΩ, providing a system output of up to 3A; it also integrates high-voltage direct detection technology with a voltage rating up to 200V; and a supply voltage up to 30V, allowing the controller to be directly used in rectification applications with output voltages as high as 24V, greatly expanding its range of applications.
The highly integrated circuit design makes the chip's external circuitry extremely simple. In QC and PD 5V/9V/12V applications, only one capacitor is needed to build a complete synchronous rectification system.
Typical Application Diagram
Functions
● Supports CCM/QR/DCM switching power supply modes
● Excellent 5V/9V/12V fast charging synchronous rectification application
● Built-in MOS with voltage rating up to 80V
● Built-in MOS on-resistance as low as 10mΩ
● Efficiency improvement of 2~6% compared to traditional Schottky diodes
● Extremely wide operating voltage range of 4.5V to 36V
● Can be powered directly by 5V or by an auxiliary winding
● Static operating current as low as 600uA
● Supports switching power supply frequencies up to 150KHz
● SOP8 package
Applications
● 5V3A~12V3A, fast charging power supply
● 18W-PD fast charging power supply
● High-efficiency switching power supply
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Room 819, Dongmei Building, Xiangnan Three District, Minqiang Community, Minzhi Street, Longhua District, Shenzhen
