- All
- Product Management
- News
- Introduction
- Corporate Outlets
- FAQ
- Corporate Video
- Corporate Brochure
SF5566D
The SF5566D is a high-performance, high-efficiency, and highly integrated current mode PWM controller suitable for offline flyback converter applications. In the SF5566D, the PWM switching frequency with random playback is fixed at 65KHz and is adjusted to a narrower range. When the output power demand decreases, the IC will reduce the switching frequency according to the proprietary η-reducing switching frequency-balancing TM series control to improve power conversion efficiency at light loads. When the output power is below a given value, the IC enters burst mode, and the no-load power can be reduced to below 75mW. This IC can achieve "zero OCP/OPP recovery gap" using SiFirst's proprietary control algorithm. The SF5566D also incorporates proprietary "audio noise-free overcurrent protection compensation" to achieve constant power limiting and audio noise operation under heavy loads when the line input is approximately 90VAC. The SF5566D integrates undervoltage lockout (UVLO), VDD overvoltage protection (OVP), cycle-by-cycle current limiting (OCP), pin float protection, overload protection (OLP), gate clamping, VDD clamping, leading edge blanking (LEB), soft start, and other functions and protections. The SF5566D is available in an SOP8 package.
Category：
- Product Description
-
- Commodity name: SF5566D
- 封装: SOP-8
- 品牌: Saiwei Technology
The SF5566D is a high-performance, high-efficiency, and highly integrated current mode PWM controller suitable for offline flyback converter applications. In the SF5566D, the PWM switching frequency with random playback is fixed at 65KHz and is adjusted to a narrower range. When the output power demand decreases, the IC will reduce the switching frequency according to the proprietary η-reducing switching frequency-balancing TM series control to improve power conversion efficiency at light loads. When the output power is below a given value, the IC enters burst mode, and the no-load power can be reduced to below 75mW. This IC can achieve "zero OCP/OPP recovery gap" using SiFirst's proprietary control algorithm. The SF5566D also incorporates proprietary "audio noise-free overcurrent protection compensation" to achieve constant power limiting and audio noise operation under heavy loads when the line input is approximately 90VAC. The SF5566D integrates undervoltage lockout (UVLO), VDD overvoltage protection (OVP), cycle-by-cycle current limiting (OCP), pin float protection, overload protection (OLP), gate clamping, VDD clamping, leading edge blanking (LEB), soft start, and other functions and protections. The SF5566D is available in an SOP8 package.
Product Message
Please fill in the information accurately, and we will reply to you within 24 hours.
Official Account
E-mail：
Company Address：
Room 819, Dongmei Building, Xiangnan Three District, Minqiang Community, Minzhi Street, Longhua District, Shenzhen
