|
|
PDF FSEZ2016 Data sheet ( Hoja de datos )
| Número de pieza | FSEZ2016 | |
| Descripción | Low-Power Green-Mode EZSWITCHTM without Secondary Side Feedback Circuitry | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de FSEZ2016 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
April 2009
FSEZ2016 — Low-Power Green-Mode EZSWITCHTM without
Secondary Side Feedback Circuitry
Features
Linearly Decreasing PWM Frequency
Green Mode Under Light-load and Zero-Load
Conditions
Constant Voltage (CV) and Constant Current (CC)
around ±25% without Secondary Side Feedback
Circuitry
Precise Constant Voltage (CV) at ±5% by Secondary
Side Feedback Circuitry
Low Startup Current: 8μA
Low Operating Current: 3.6mA
Leading-Edge Blanking (LEB)
Constant Power Limit
Universal AC Input Range
Synchronized Slope Compensation
140°C OTP Sensor with Hysteresis
VDD Over-Voltage Clamping
Cycle-by-Cycle Current Limiting
Under-Voltage Lockout (UVLO)
www.DataSheeFGt4iaxUete.dcoOPmuWtpMutFMreaqxuimeunmcy
with Hopping
Voltage Clamped
at
17V
Applications
General-purpose switching-mode power supplies and
flyback power converters, such as:
Battery Chargers for Cellular Phones, Cordless
Phones, PDAs, Digital Cameras, Power Tools
Power Adapters for Ink Jet Printers, Video Game
Consoles, Portable Audio Players
Open-Frame SMPS for TV/DVD Standby and
Auxiliary Supplies, Home Appliances, Consumer
Electronics
Replacement for Linear Transformers and RCC SMPS
PC 5V Standby Power
Related Resources
AN-6081 — Low-Power Green-Mode EZSWITCHTM
without Secondary Feedback
Description
This highly integrated PWM controller provides several
features to enhance the performance of low-power
flyback converters. To minimize standby power
consumption, a proprietary green-mode function provides
off-time modulation to linearly decrease the switching
frequency under light-load and zero-load conditions. This
green mode enables the power supply to meet
international power conservation requirements. The
supply voltage VDD is also used for feedback
compensation, to regulate the output voltage without
requiring a conventional TL431 and a photo-coupler. A
typical output CV/CC characteristic is shown in Figure 1.
Another advantage of the FSEZ2016 is that the typical
startup current is only 8μA, while the typical operating
current can be as low as 3.6mA. A large startup
resistance can be used to achieve even higher power
conversion efficiency.
FSEZ2016 integrates frequency hopping function
internally to reduce EMI emissions with minimum line
filters. Also, built-in synchronized slope compensation
maintains the stability of peak current-mode control.
Proprietary internal compensation ensures constant
output power limiting over a universal range of AC input
voltages, from 90VAC to 264VAC.
The FSEZ2016 provides many protection functions.
Pulse-by-pulse current limiting ensures constant output
current, even if a short circuit occurs. The internal
protection circuit disables PWM output if VDD exceeds
22.7V. The gate output is clamped at 17V to protect the
power MOS from over-voltage damage. The built-in
over-temperature protection (OTP) function shuts down
the controller at 140°C with a 30°C hysteresis.
Maximum
Vo With Secondary Feedback
8
Minimum
Without Secondary Feedback
7
6
5
4
3
2
1
0 Io
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Figure 1. Typical Output V-I Characteristic
© 2008 Fairchild Semiconductor Corporation
FSEZ2016 Rev. 1.0.0
www.fairchildsemi.com
1 page  
Electrical Characteristics
Unless otherwise noted, VDD=15V and TA=25°C.
Symbol
VDD Section
Parameter
VDD-OP Continuously Operation Voltage
VDD-ON Turn-on Threshold Voltage
VDD-OFF Turn-off Threshold Voltage
IDD-ST Startup Current
IDD-OP Operating Supply Current
VDD-G-OFF
VDD Low-threshold Voltage to Exit
Green-off Mode
Feedback Input Section
AV
Input-Voltage to Current-Sense
Attenuation
ZFB Input Impedance
VFB-OPEN Open-Loop Voltage
VDD-FB VDD Feedback Threshold Voltage
Current-Sense Section
tPD Propagation Delay
VSTHVA Current Limit Valley Threshold Voltage
VSTHFL Current Limit Flat Threshold Voltage
www.DataSheet4tLUE.Bcom Leading-Edge Blanking Time
Conditions
Min. Typ. Max. Units
With Secondary Feedback
20.0
Without Secondary Feedback
22.7
16 17 18
7.5 8.0 8.5
VDD=VDD-ON – 0.1V
CL=1nF
8
3.6
VDD-OFF
+1.3
20
4.6
V
V
V
μA
mA
V
IFB=0.1mA to 0.2mA
FB is Open
IFB=0.4mA
VDD=18V
VDD=15V
VDD=10V
VDD=18V
VDD=15V
VDD=10V
0.35 V/V
4.6 kΩ
4.5 V
20.7 22.7 24.7 V
18.4 20.4 22.4 V
100 150
0.83
0.74
0.59
1.15
1.04
0.84
220 310 400
ns
V
V
V
V
V
V
ns
© 2008 Fairchild Semiconductor Corporation
FSEZ2016 Rev. 1.0.0
Figure 6. Saw Limit
5
www.fairchildsemi.com
5 Page 
Applications Information
Figure 17. Reference Circuit (without Secondary-Side Feedback)
BOM
Reference
C1
C2
C3
C4
C5
C6
www.DataShCee7t4U.com
C9
C10
D1
D2
D3
D4
D5
D6
D7
Component
CC 4.7nF/1kV
EC 4.7μF/400V 105°C
EC 4.7μF/400V 105°C
EC 10μF/50V 105°C
CC 1nF/1kV
EC 560μF/10V
EC 560μF/10V
Open
CC 1nF
Diode 1N4007
Diode 1N4007
Diode 1N4007
Diode 1N4007
Diode FR107
Diode FR102
Diode SB560
Reference
F1
L2
L3
L4
R1
R2
R3
R4
R5
R6
R7
R8
R9
T1
U1
Component
R 1Ω/1W
Inductor 4.7μH
Inductor 470μH
Inductor 80μH
R 750kΩ
R 750kΩ
R 100kΩ
R 10Ω
R 2.2Ω
R 47Ω
R 270Ω
R 0Ω
R 2kΩ
Transformer EE-16
IC FSEZ2016
© 2008 Fairchild Semiconductor Corporation
FSEZ2016 Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet FSEZ2016.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| FSEZ2016 | Low-Power Green-Mode EZSWITCHTM without Secondary Side Feedback Circuitry | Fairchild Semiconductor |
| 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 |