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Proprietary "Zero OCP/OPP Recovery Gap" Control
Built-in Soft Start Function
All Pins Floating Protection
Very Low Startup Current
High Voltage CMOS Process with Excellent ESD Protection
Frequency Reduction and Burst Mode Control for Energy Saving
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 OVP & Clamp
VDD Under Voltage Lockout (UVLO)
AC/DC Adaptors
Open-frame SMPS
Set-Top Box Power Supplies
ATX Standby Power
SF1530 is a high performance, low cost, highly integrated current mode PWM controller for offline flyback converter applications.
PWM switching frequency with shuffling is externally programmable, which can reduce conduction EMI emission of a power supply. When the output power demands decrease, the IC automatically decreases switching frequency for high power conversion efficiency. When the current set-point falls below a given value, e.g. the output power demand diminishes, the IC enters into burst mode and provides excellent efficiency without audio noise.
The IC can achieve “Zero OCP/OPP Recovery Gap” using SiFirst’s proprietary control algorithm. Meanwhile, the OCP/OPP variation versus universal line input is compensated.
The IC has built-in synchronized slope compensation to prevent sub-harmonic oscillation at high PWM duty output. The IC also has built-in soft start function to soften the stress on the MOSFET during power on period.
SF1530 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).
SF1530 is available in SOT23-6, DIP-8 packages.
ID | 型号 | 拓扑结构 | 驱动模式 | HV-mW™ | 待机功耗 | 最大输出功率 | 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 |
关注:电子行业精彩资讯，关注嘉泰姆资讯官方微信，精华内容抢鲜读，
关注方法：添加好友→搜索“嘉泰姆电子元件”→关注
或微信“扫一扫”二维码官方微信(图片点击可放大)
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