DataSheetWiki


SF1565SG fiches techniques PDF

SiFirst - Highly Integrated Current Mode PWM Controller

Numéro de référence SF1565SG
Description Highly Integrated Current Mode PWM Controller
Fabricant SiFirst 
Logo SiFirst 





1 Page

No Preview Available !





SF1565SG fiche technique
SF1565
Highly Integrated Current Mode PWM Controller
FEATURES
Built-in Soft Start Function
Very Low Startup Current
Frequency Reduction and Burst Mode Control
for Energy Saving
Built-in Frequency Shuffling
Programmable Switching Frequency
Built-in Synchronous Slope Compensation
Cycle-by-Cycle Current Limiting
Pins Floating Protection
High Voltage CMOS Process with Excellent
ESD Protection
Current Mode Control
Built-in Leading Edge Blanking (LEB)
Constant Power Limiting
Audio Noise Free Operation
VDD OVP & Clamp
VDD Under Voltage Lockout (UVLO)
APPLICATIONS
Offline AC/DC Flyback Converter for
AC/DC Power Adaptors
Open-frame SMPS
Print Power, Scanners, and Motor Drivers
GENERAL DESCRIPTION
SF1565 is a high performance, highly integrated
current mode PWM controller for medium to large
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 Constant 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), VDD Over Voltage
Protection (OVP), Soft Start, External Programmable
Over Temperature Protection (OTP), Cycle-by-cycle
Current Limiting (OCP), Over Load Protection (OLP),
Pins Floating Protection, RI Pin Short-to-GND
Protection, GATE Clamping, VDD Clamping, Leading
Edge Blanking (LEB).
In SF1565, the all protection functions are auto-
recovery mode protection.
SF1565 is available in SOP-8 and DIP-8 packages.
TYPICAL APPLICATION
AC IN
EMI
Filter
DC Out
SF1565
1 GND
GATE 8
2 FB
3 VIN
4 RI
VDD 7
CS 6
RT 5
NTC
©SiFirst Technology
-1-
TL431
Confidential
SiFirst_DS_1565_V1.2

PagesPages 2
Télécharger [ SF1565SG ]


Fiche technique recommandé

No Description détaillée Fabricant
SF1565SG Highly Integrated Current Mode PWM Controller SiFirst
SiFirst
SF1565SGT Highly Integrated Current Mode PWM Controller SiFirst
SiFirst

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche