Datasheet > SF5580SG

SF5580SG

更新时间： 2024-01-28 02:49:18

品牌	Logo	应用领域
赛威科技 - SIFIRST		/
页数	文件大小	规格书
2页	82K
描述
HV-mWTMãÎ·-BalanceTM PWM Controller Fixed 65KHz Fsw

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中文翻译

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SF5580SG 数据手册

SF5580

HV-mW^TM、η-Balance^TMPWM Controller ^{Fixed 65KHz Fsw}

FEATURES

GENERAL DESCRIPTION

◆ Proprietary HV-mW^TMto Achieve Less than

SF5580 is a high performance, highly integrated

current mode PWM controller for medium to large

offline flyback power converter applications.

50mW Standby Power

◆ Proprietary η-Balance^TMControl to Boost

Light Load Efficiency

In SF5580, 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

◆ Proprietary “Zero OCP/OPP Recovery Gap”

Control

◆ Latch Plug-off Protection with External

Triggering

◆ Fixed 65KHz Switching Frequency

◆ Built-in Soft Start Function

◆ Pin Floating Protection

proprietaryη-Balance^TMcontrol to boost power

conversion efficiency at the light load. SF5580 also

integrates proprietary HV-mW^TMtechnology to

achieve less than 50mW standby power.

SF5580 can achieve “Zero OCP/OPP Recovery

Gap” using SiFirst’s proprietary control algorithm.

SF5580 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.

SF5580 integrates functions and protections of Under

Voltage Lockout (UVLO), VCC Over Voltage

Protection (OVP), Cycle-by-cycle Current Limiting

(OCP), External Programmable Over Temperature

Protection (OTP), Pin Floating Protection, Over Load

Protection (OLP), Soft Start, Gate Clamping, VCC

Clamping, etc.

◆ Frequency Reduction and Burst Mode Control

for Energy Saving

◆ Current Mode Control

◆ Built-in Frequency Shuffling

◆ Built-in Synchronous Slope Compensation

◆ Cycle-by-Cycle Current Limiting

◆ Leading Edge Blanking (LEB)

◆ Constant Power Limiting

◆ Audio Noise Free Operation

◆ VDD UVLO, OVP & Clamp

APPLICATIONS

Offline AC/DC Flyback Converter for

◆ AC/DC Adaptors

◆ Open-frame SMPS

◆ Print Power, Scanners, and Motor Drivers

In SF5580, the OTP, VDD OVP, and RT-pin triggered

protections are Latch Plug-off protection. The other

protection functions are auto-recovery mode

protection.

SF5580 is available in SOP8 and DIP8 packages.

TYPICAL APPLICATION

- 1 -

Confidential

SiFirst_DS_5580_V1.1

中文翻译

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与SF5580SG相关器件

型号	品牌	获取价格	描述	数据表
SF5580SGT	SIFIRST	获取价格	HV-mWTMãÎ·-BalanceTM PWM Controller Fixed 6
SF5590	SIFIRST	获取价格	HV-mWTMãÎ·-BalanceTM PWM Controller Program
SF5590DP	SIFIRST	获取价格	HV-mWTMãÎ·-BalanceTM PWM Controller Program
SF5590SG	SIFIRST	获取价格	HV-mWTMãÎ·-BalanceTM PWM Controller Program
SF5590SGT	SIFIRST	获取价格	HV-mWTMãÎ·-BalanceTM PWM Controller Program
SF55A-G	COMCHIP	获取价格	Super Fast Rectifiers
SF55-AP	MCC	获取价格	Rectifier Diode, 1 Phase, 1 Element, 5A, 300V V(RRM), Silicon, DO-201AD, ROHS COMPLIANT, P
SF55-AP-HF	MCC	获取价格	Rectifier Diode, 1 Phase, 1 Element, 5A, 300V V(RRM), Silicon, DO-201AD,
SF55-B	FRONTIER	获取价格	Rectifier Diode, 1 Phase, 1 Element, 5A, Silicon
SF55-B	RECTRON	获取价格	Rectifier Diode, 1 Phase, 1 Element, 5A, 300V V(RRM), Silicon, DO-201AD, ROHS COMPLIANT, P

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