中文
EnglishIn SF1565，the PWM switching is internally trimmed to tight range 。To improve EMI performance，the IC integrates frequency shuffling function to reduce conduction EMI emission of a power supply
SF1565
AC/DC PWM Controller
Built-in soft start function
Built-in synchronous slope compensation
Pins Floating Protection
Very Low Startup Current
High Voltage CMOS Process with Excellent ESD Protection
Frequency Reduction and Burst Mode Control for Energy Saving
Programmable switching frequency
Current Mode Control
Built-in Frequency Shuffling
Cycle-by-Cycle Current Limiting
Built-in Leading Edge Blanking (LEB)
Constant Power Limiting
Audio Noise Free Operation
VDD under voltage lockout (UVLO)
Application:
Offline AC/DC Flyback Converter forAC/DC Adaptors
Open-frame SMPS
Set-Top Box Power Supplies
ATX Standby Power
SF1565 is a high performance, highly integrated current mode PWM controller for offline flyback converter applications.
In SF1565，the PWM switching is internally trimmed to tight range 。To improve EMI performance，the IC integrates frequency shuffling function to reduce conduction EMI emission of a power supply .the IC also integrates Content Power Limiting block to achieve constant output power limit from 90VAC to 264VAC.
Under light load conditions, a green mode function can continuously decrease the switching frequency .Under zero-load conditions; the power supply enters into burst mode and provides excellent efficiency without audio noise generated .This green mode function enables power supplies to meet international power conservation requirements.
SF1565 integrates functions and protections of Under Voltage Lockout (UVLO), VCC Over Voltage Protection (OVP), Cycle-by-cycle Current Limiting (OCP), All Pins Floating Protection, Over Load Protection (OLP), RT Pin Short-to-GND Protection, Gate Clamping, VCC Clamping, Leading Edge Blanking (LEB).
In SF1565, the all Protection functions are auto recovery mode protection.
SF1565 is available in SOP-8, DIP-8 packages.
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 |
1 | SF1530 | Flyback | External MOS | - | 300mw | 50w | - | SOT23-6 |
2 | SF1531S | Flyback/n-Balance™ | External MOS | - | 300mw | 50w | - | SOT23-6 |
3 | SF1560 | Flyback | External MOS | - | 300mw | 150w | - | SOP8 |
4 | SF1565 | Flyback | External MOS | - | 300mw | 150w | - | SOP8 |
5 | SF1585 | Flyback/n-Banlance™ | External MOS | - | 300mw | 100w | - | SOT23-6 |
6 | SF5545 | Flyback/n-Banlance™ | External MOS | - | 100mw | 50w | - | SOT23-6 |
7 | SF5545B | Flyback/n-Banlance™ | External MOS | - | 100mw | 50w | - | SOT23-6 |
8 | SF1536 | Flyback/n-Banlance™ | 1A MOS Inside | - | 300mw | 9w | - | DIP8 |
9 | SF1538 | Flyback/n-Banlance™ | 2A MOS Inside | - | 300mw | 15w | - | DIP8 |
10 | SF1533 | Flyback/n-Banlance™ | 1A MOS Inside | - | 300mw | 6w | - | SOP8 |
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