|
|
PDF SF1565 Data sheet ( Hoja de datos )
| Número de pieza | SF1565 | |
| Descripción | Highly Integrated Current Mode PWM Controller | |
| Fabricantes | SiFirst | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SF1565 (archivo pdf) en la parte inferior de esta página. Total 2 Páginas | ||
|
No Preview Available !
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
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet SF1565.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SF156 | 1.5A SOFT FAST RECOVERY RECTIFIER |  Won-Top Electronics |
| SF156-T3 | 1.5A SOFT FAST RECOVERY RECTIFIER | Won-Top Electronics |
| SF156-TB | 1.5A SOFT FAST RECOVERY RECTIFIER | Won-Top Electronics |
| SF1560 | Highly Integrated Current Mode PWM Controller | SiFirst |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |