DataSheet.es    


PDF FSBH0270W Data sheet ( Hoja de datos )

Número de pieza FSBH0270W
Descripción Green Mode Fairchild Power Switch
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



Hay una vista previa y un enlace de descarga de FSBH0270W (archivo pdf) en la parte inferior de esta página.


Total 14 Páginas

No Preview Available ! FSBH0270W Hoja de datos, Descripción, Manual

June 2013
FSBH0F70WA, FSBH0170W, FSBH0270W
Green Mode Fairchild Power Switch (FPS™)
Features
Brownout Protection with Hysteresis
Built-In 5 ms Soft-Start Function
Internal Avalanche-Rugged 700 V SenseFET
Low Acoustic Noise During Light-Load Operation
High-Voltage Startup
Linearly Decreasing PWM Frequency to 18 KHz
Peak-Current-Mode Control
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking (LEB)
Synchronized Slope Compensation
Internal Open-Loop Protection
VDD Under-Voltage Lockout (UVLO)
VDD Over-Voltage Protection (OVP)
Internal Auto-Restart Circuit (OVP, OTP)
Constant Power Limit (Full AC Input Range)
Internal OTP Sensor with Hysteresis
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
Au xiliary Power Supply for PC and Server
SMPS for VCR, SVR, STB, D VD & D VCD Player,
Printer, Facsimile, and Scanner
Adapter for Camcorder
Description
The highly integrated FSBH-series consists of an
integrated current-mode Pulse Width Modulator (PWM)
and an avalanche-rugged 700 V SenseFET. It is
specifically designed for high-performance offline
Switched-Mode Power Supplies (SMPS) with minimal
external components.
The integrated PWM controller features include a
proprietary green-mode function that provides off-time
modulation to linearly decrease the switching frequency
at light-load conditions to minimize standby power
consumption. To avoid acoustic-noise problems, the
minimum PWM frequency is set above 18 kHz. This
green-mode function enables the power supply to meet
international power conservation requirements. The
PWM controller is manufactured using the BiCMOS
process to further reduce power consumption. The
FSBH-series turns off some internal circuits to improve
power saving when VFB is lower than 1.6 V, which
allows an operating current of only 2.5 mA.
The FSBH-series has built-in synchronized slope
compensation to achieve stable peak-current-mode
control. The proprietary external line compensation
ensures constant output power limit over a wide AC
input voltage range, from 90 VAC to 264 VAC.
The FSBH-series provides many protection functions. In
addition to cycle-by-cycle current limiting, the internal
open-loop protection circuit ensures safety when an
open-loop or output short occurs. PWM output is
disabled until VDD drops below the VTH-OLP, then the
controller starts up again. As long as VDD exceeds 28 V,
the internal OVP circuit is triggered.
Compared with a discrete MOSFET and controller or
RCC switching converter solution, the FSBH-series
reduces component count, design size, and weight;
while increasing efficiency, productivity, and system
reliability. These devices provide a basic platform that is
well suited for the design of cost-effective flyback
converters, such as in PC auxiliary power supplies.
© 2011 Fairchild Semiconductor Corporation
FSBH0F70WA/0170W/0270W • Rev. 1.0.3
www.f airchildsemi.com

1 page




FSBH0270W pdf
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Min. Max. Unit
VDRAIN Drain Pin Voltage(5,6)
FSBH0F70WA
FSBH0170W
FSBH0270W
700 V
IDM Drain Current Pulsed(7)
FSBH0F70WA
FSBH0170W
FSBH0270W
1.5
4.0 A
8.0
EAS Single Pulsed Avalanche Energy(8)
VDD DC Supply Voltage
VFB FB Pin Input Voltage
VIN VIN Pin Input Voltage
VHV HV Pin Input Voltage
PD Power Dissipation (TA50°C)
ΘJA Junction-to-Air Thermal Resistance
ψJT Junction-to-Top Thermal Resistance(9)
TJ Operating Junction Temperature
FSBH0F70WA
FSBH0170W
FSBH0270W
10
50
140
30
-0.3 7.0
-0.3 7.0
700
1.5
80
20
Internally limited(10 )
mJ
V
V
V
V
W
C/W
C/W
C
TSTG Storage Temperature Range
-55 +150 C
TL
ESD
Lead Temperature (Wave Soldering or IR, 10 Seconds)
Human Body Model
(All Pins Except HV Pn): JESD22-A114
FSBH0F70WA
FSBH0170W
FSBH0270W
Charged Device Model
(All Pins Except HV Pin): JESD22-C101
FSBH0F70WA
FSBH0170W
FSBH0270W
+260
C
5.0
5.0
5.0
kV
2.0
2.0
2.0
Notes:
5. All voltage values, except differential voltages, are given with respect to the network ground terminal.
6. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
7. Non-repetitive rating: pulse width is limited by maximum junction temperature.
8. L = 51 mH, starting TJ = 25C.
9. Measured on the package top surface.
10. Internally Limited of TJ refers to TOTP
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does no t
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
TA Operating Ambient Temperature
Min.
-40
Max.
+105
Unit
°C
© 2011 Fairchild Semiconductor Corporation
FSBH0F70WA/0170W/0270W • Rev. 1.0.3
5
www.f airchildsemi.com

5 Page





FSBH0270W arduino
Functional Description
Startup Operation
The HV pin is connected to bulk voltage through an
external resistor, RHV, as shown in Figure 22. When AC
voltage is applied to the power system, an internal HV
RA
startup circuit provides a high current (around 3.5 mA)
to charge an external VDD capacitor until VDD voltage
exceeds the turn-on threshold voltage (VDD-ON). For
RB
lower power consumption, the HV startup circuit shuts
down during normal operation. The e xternal VDD RC C
capacitor and auxiliary winding maintain the VDD voltage
and provide operating current to controller.
FSBH0170W/0270W
1.1V/0.6V
VIN
Brown-In/Out
AC line
RHV
5 HV
VDD 2
CDD NA
FSBH0x70W/WA
Figure 22. Startup Circuit
Slope Compensation
The FSBH-series is designed for flyback power
converters. The peak-current-mode control is used to
optimize system performance. Slope compensation is
added to reduce current loop gain and improve power
system stability. The FSBH-series has a built-in,
synchronized, positive slope for each switching cycle.
Soft-Start
The FSBH-series has an internal soft-start circuit that
reduces the SenseFET switching current during power
system startup. The characteristic curve of soft-start
time versus VLMT level is shown in Figure 23. The VLMT
level rises in six steps. By doing so, the power system
can smoothly build up the rated output voltage and
effectively reduce voltage stress on the PWM switch
and output diode.
Figure 24. Brown-In/Out Function on VIN Pin
Once the VIN pin voltage is lower than 0.6 V and lasts
for 500 ms, the PWM gate is disabled to protect the
system from over current. FSBH0170W / 0270W starts
up as VIN increases above 1.1 V. Because the divider
resistors of the VIN pin are connected behind the
bridge, the ratio calculations for brownout in PFC and
non-PFC system are different, as shown in Figure 25.
The formulas are provided in the following equations:
Brownout with PFC:
RC
RA RB RC
2VAC _ OUT
2
0.6
(1)
Brownout with non-PFC:
RC
RA RB RC
2VAC _OUT 0.6
Brown-in level is determined by:
(2)
VAC _ IN
1.1 RA
2
RB
RC
RC
(3)
PFC Runs
AC Input
PFC Stops
0.89VLMT
0.79VLMT
0.68VLMT
0.58VLMT
VLMT
VIN
0.26VLMT
Figure 25. VIN Level According to PFC Operation
1ms 2ms 3ms 4ms 5ms
Brown-In Function of FSBH0F70WA
Figure 23. Soft-Start Function
Brown-In/Out Function
FSBH0170W/0270W has a built-in internal brown-in/out
protection comparator monitoring voltage of the VIN pin.
Figure 24 shows a resistive divider with low-pass
filtering for line-voltage detection on the VIN pin.
The VIN pin functions are disabled from FSBH0F70WA
which still exist brown-in protection in VDD pin. There is
a discharge current internal from VDD to ground during
startup. The HV source current must be larger than IDD-
ST to charge the capacitor of VDD. The brown-in level can
be determined by RHV according to the equation:
RHV
2VAC 12
IDDST
(4)
© 2011 Fairchild Semiconductor Corporation
FSBH0F70WA/0170W/0270W • Rev. 1.0.3
11
www.f airchildsemi.com

11 Page







PáginasTotal 14 Páginas
PDF Descargar[ Datasheet FSBH0270W.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
FSBH0270Green Mode Fairchild Power SwitchFairchild Semiconductor
Fairchild Semiconductor
FSBH0270Green Mode Fairchild Power SwitchFairchild Semiconductor
Fairchild Semiconductor
FSBH0270-F116Green Mode Fairchild Power SwitchFairchild Semiconductor
Fairchild Semiconductor
FSBH0270AGreen Mode Fairchild Power SwitchFairchild Semiconductor
Fairchild Semiconductor

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
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,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar