中文
EnglishSF5588 is a high performance, highly integrated current mode PWM power switch for offline flyback power converter applications.
SF5588
700V HV-mw Power Switch IC
Built-in 600V Power MOSFET
Proprietary "η-BalanceTM" to boost light load efficiency.
Proprietary "zero OCP/OPP recovery gap" control
Proprietary HV-mWTM to Achieve Less than 30mW Standby Power
Fixed 65KHz Switching Frequency
Frequency Reduction and Burst Mode Control for Energy Saving
Built-in soft start function
Built-in Frequency Shuffling
Cycle-by-cycle current limiting
Built-in Synchronous Slope Compensation
Constant power limiting
Leading Edge Blanking (LEB)
VDD OVP with Latch Plug-off Protection
Audio Noise Free Operation
Application:
Offline AC/DC fly-back converter forAC/DC adapters
Open-frame SMPS
Set-top box power supplies
ATX standby power
VCR, SVR, DVD&DVCD Player SMPS
SF5588 is a high performance, highly integrated current mode PWM power switch for offline flyback power converter applications.
In SF5588, PWM switching frequency with shuffling is fixed to 65KHz and is trimmed to tight range. When the output power demands decrease, the IC decreases switching frequency based on the proprietaryη-BalanceTM control to boost power conversion efficiency at the light load. SF5588 also integrates proprietary HV-mWTM technology to achieve less than 30mW standby power.
SF5588 can achieve "Zero OCP/OPP Recovery Gap" using SiFirst's proprietary control algorithm. SF5588 also has built in proprietary "Audio Noise Free OCP Compensation", which can achieve constant power limiting and can achieve audio noise operation at heavy loading when line input is around 90VAC.
SF5588 integrates functions and protections of Under Voltage Lockout (UVLO), VCC Over Voltage Protection (OVP), Cycle-by-cycle Current Limiting (OCP), Pin Floating Protection, Over Load Protection (OLP), Soft Start, VCC Clamping, etc. In SF5588, VDD OVP is Latch Plug-off protection. The other protection functions are auto-recovery mode protection.
SF5588 is available in DIP8 package.
ID | 型号 | 拓扑结构 | 驱动模式 | HV-mW™ | 待机功耗</h2> | 最大输出功率</h2> | 六级能效 | 封装 |
21 | SF5877 | QR-||™ | External MOS | √</p> | 50mw | 150w | √</p> | SOP8 |
22 | SF5879 | QR-||™ | 2A MOS Inside | √</p> | 30mw | 15w | √</p> | DIP8 |
23 | SF5887 | QR-||™ | External MOS | - | 100mw | 70w | √</p> | SOP8 |
24 | SF5897 | QR-||™ | External MOS | - | 300mw | 150w | √</p> | SOP8 |
25 | SF5873 | QR-||™ | External MOS | √</p> | 50mw | 50w | √</p> | SOP8 |
26 | SF1539W | Flyback/n-Banlance™ | 2A MOS Inside | - | 300mw | 15w | - | DIP8 |
27 | SF1548 | Flyback/n-Banlance™ | 2A MOS Inside | - | 300mw | 15w | - | DIP8 |
28 | SF1549 | Flyback/n-Banlance™ | 4A MOS Inside | - | 300mw | 18w | - | DIP8 |
29 | SF5588 | Flyback/n-Banlance™ | 2A MOS inside | √</p> | 50mw | 15w | - | DIP8 |
30 | SF5539 | Flyback/n-Banlance™ | MOS inside | - | 75mw | - | - | DIP8 |
发表评论