|
|
PDF FSD156MRBN Data sheet ( Hoja de datos )
| Número de pieza | FSD156MRBN | |
| Descripción | Green-Mode Fairchild Power Switch | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de FSD156MRBN (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
October 2011
FSD156MRBN
Green-Mode Fairchild Power Switch (FPS™)
Features
Advanced Soft Burst-Mode Operation for
Low Standby Power and Low Audible Noise
Random Frequency Fluctuation (RFF) for Low EMI
Pulse-by-Pulse Current Limit
Various Protection Functions: Overload Protection
(OLP), Over-Voltage Protection (OVP), Abnormal
Over-Current Protection (AOCP), Internal Thermal
Shutdown (TSD) with Hysteresis, Output-Short
Protection (OSP), and Under-Voltage Lockout
(UVLO) with Hysteresis
Low Operating Current (0.4mA) in Burst Mode
Internal Startup Circuit
Internal High-Voltage SenseFET: 650V
Built-in Soft-Start: 15ms
Auto-Restart Mode
Applications
Power Supply for LCD Monitor, STB, and DVD
Combination
Description
The FSD156MRBN is an integrated Pulse Width
Modulation (PWM) controller and SenseFET specifically
designed for offline Switch-Mode Power Supplies
(SMPS) with minimal external components. The PWM
controller includes an integrated fixed-frequency
oscillator, Under-Voltage Lockout (UVLO), Leading-
Edge Blanking (LEB), optimized gate driver, internal
soft-start, temperature-compensated precise current
sources for loop compensation, and self-protection
circuitry. Compared with a discrete MOSFET and PWM
controller solution, the FSD series can reduce total cost,
component count, size, and weight; while
simultaneously increasing efficiency, productivity, and
system reliability. This device provides a basic platform
suited for cost-effective design of a flyback converter.
Ordering Information
Output Power Table(2)
Part
Number
Package
Operating
Junction
Temperature
Current
Limit
RDS(ON)
(Max.)
230VAC ±15%(3)
85-265VAC
Adapter(4)
Open
Frame(5)
Adapter(4)
Open
Frame(5)
Replaces
Device
FSD156MRBN 8-DIP
-40°C ~
+125°C
1.60A 2.3
26W
40W
20W
30W
FSFM300N
FSGM300
Notes:
1. Lead-free package per JEDEC J-STD-020B.
2. The junction temperature can limit the maximum output power.
3. 230VAC or 100/115VAC with voltage doubler.
4. Typical continuous power in a non-ventilated enclosed adapter measured at 50C ambient temperature.
5. Maximum practical continuous power in an open-frame design at 50C ambient temperature.
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/
1 page  
Electrical Characteristics
TJ = 25C unless otherwise specified.
Symbol
Parameter
SenseFET Section
BVDSS Drain-Source Breakdown Voltage
IDSS Zero-Gate-Voltage Drain Current
RDS(ON)
CISS
COSS
Drain-Source On-State Resistance
Input Capacitance(12)
Output Capacitance(12)
tr Rise Time
tf Fall Time
td(on)
Turn-On Delay
td(off)
Turn-Off Delay
Control Section
fS Switching Frequency(12)
fS Switching Frequency Variation(12)
DMAX Maximum Duty Ratio
DMIN Minimum Duty Ratio
IFB Feedback Source Current
VSTART
VSTOP
UVLO Threshold Voltage
tSS Internal Soft-Start Time
VRECOMM Recommended VCC Range
Burst-Mode Section
VBURH
VBURL
Hys
Burst-Mode Voltage
Protection Section
ILIM
VSD
IDELAY
tLEB
VOVP
tOSP
VOSP
tOSP_FB
TSD
THYS
Peak Drain Current Limit
Shutdown Feedback Voltage
Shutdown Delay Current
Leading-Edge Blanking Time(12,14)
Over-Voltage Protection
Output-Short
Protection(12)
Threshold Time
Threshold VFB
VFB Blanking Time
Thermal Shutdown Temperature(12)
Conditions
VCC = 0V, ID = 250A
VDS = 650V, TA = 25C
VGS=10V, ID =1A
VDS = 25V, VGS = 0V, f=1MHz
VDS = 25V, VGS = 0V, f=1MHz
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID = 4A, RG=25Ω
VDS = 325V, ID= 4A, RG=25Ω
VCC = 14V, VFB = 4V
-25C < TJ < 125C
VCC = 14V, VFB = 4V
VCC = 14V, VFB = 0V
VFB = 0
VFB = 0V, VCC Sweep
After Turn-on, VFB = 0V
VSTR = 40V, VCC Sweep
VCC = 14V, VFB Sweep
di/dt = 300mA/s
VCC = 14V, VFB Sweep
VCC = 14V, VFB = 4V
VCC Sweep
OSP Triggered when
tON<tOSP & VFB>VOSP
(Lasts Longer than tOSP_FB)
Shutdown Temperature
Hysteresis
Min.
650
61
61
65
11
7.0
13
0.45
0.30
1.45
6.45
1.2
23.0
0.7
1.8
2.0
125
Typ.
1.8
515
75
26
25
14
32
67
±5
67
90
12
7.5
15
0.50
0.35
150
1.60
7.00
2.0
300
24.5
1.0
2.0
2.5
135
60
Max.
250
2.2
73
±10
73
0
115
13
8.0
23
0.55
0.40
1.75
7.55
2.8
26.0
1.3
2.2
3.0
145
Unit
V
A
Ω
pF
pF
ns
ns
ns
ns
kHz
%
%
%
A
V
V
ms
V
V
V
mV
A
V
A
ns
V
s
V
s
C
C
Continued on the following page…
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
5
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/
5 Page 
4.3. Output-Short Protection (OSP): If the output is
shorted, steep current with extremely high di/dt can
flow through the SenseFET during the minimum turn-
on time. Such a steep current brings high-voltage
stress on the drain of the SenseFET when turned off.
To protect the device from this abnormal condition,
OSP is included. It is comprised of detecting VFB and
SenseFET turn-on time. When the VFB is higher than
2.0V and the SenseFET turn-on time is lower than
1.0μs, this condition is recognized as an abnormal
error and PWM switching shuts down until VCC
reaches VSTART again. An abnormal condition output
short is shown in Figure 22.
5. Soft Burst-Mode Operation: To minimize power
dissipation in Standby Mode, the FSD156MRBN enters
Burst-Mode operation. As the load decreases, the
feedback voltage decreases. As shown in Figure 23, the
device automatically enters Burst Mode when the
feedback voltage drops below VBURL (350mV). At this
point, switching stops and the output voltages start to
drop at a rate dependent on standby current load. This
causes the feedback voltage to rise. Once it passes
VBURH (500mV), switching resumes. The feedback
voltage then falls and the process repeats. Burst Mode
alternately enables and disables SenseFET switching,
reducing switching loss in Standby Mode.
Figure 22. Output-Short Protection
4.4 Over-Voltage Protection (OVP): If the
secondary-side feedback circuit malfunctions or a
solder defect causes an opening in the feedback path,
the current through the opto-coupler transistor
becomes almost zero. Then VFB climbs up in a similar
manner to the overload situation, forcing the preset
maximum current to be supplied to the SMPS until the
overload protection is triggered. Because more
energy than required is provided to the output, the
output voltage may exceed the rated voltage before
the overload protection is triggered, resulting in the
breakdown of the devices in the secondary side. To
prevent this situation, an OVP circuit is employed. In
general, the VCC is proportional to the output voltage
and the FSD156MRBN uses VCC instead of directly
monitoring the output voltage. If VCC exceeds 24.5V,
an OVP circuit is triggered, resulting in the termination
of the switching operation. To avoid undesired
activation of OVP during normal operation, VCC should
be designed to be below 24.5V.
4.5 Thermal Shutdown (TSD): The SenseFET and
the control IC on a die in one package makes it easier
for the control IC to detect the over temperature of the
SenseFET. If the temperature exceeds ~135C, the
thermal shutdown is triggered and stops operation.
The FSD156MRBN operates in Auto-Restart Mode
until the temperature decreases to around 75C,
when normal operation resumes.
Figure 23. Figure 23. Burst-Mode Operation
6. Random Frequency Fluctuation (RFF): Fluctuating
switching frequency of an SMPS can reduce EMI by
spreading the energy over a wide frequency range. The
amount of EMI reduction is directly related to the
switching frequency variation, which is limited internally.
The switching frequency is determined randomly by
external feedback voltage and internal free-running
oscillator at every switching instant. RFF effectively
scatters EMI noise around typical switching frequency
(67kHz) and can reduce the cost of the input filter
included to meet the EMI requirements (e.g. EN55022).
© 2011 Fairchild Semiconductor Corporation
FSD156MRBN • Rev. 1.0.0
Figure 24. Random Frequency Fluctuation
www.fairchildsemi.com
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet FSD156MRBN.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| FSD156MRBN | Green-Mode Fairchild Power Switch | 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 |