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PDF ( 数据手册 , 数据表 ) IR1150SPBF

零件编号 IR1150SPBF
描述 UPFC ONE CYCLE CONTROL PFC IC
制造商 International Rectifier
LOGO International Rectifier LOGO 


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IR1150SPBF 数据手册, 描述, 功能
Data Sheet No. PD60230 revAa
IR1150S(PbF)
IR1150IS(PbF)
µPFC ONE CYCLE CONTROL PFC IC
Features
PFC with IR proprietary “One Cycle Control”
Continuous conduction mode (CCM) boost type PFC
No line voltage sense required
Programmable switching frequency (50kHz-200kHz)
Programmable output overvoltage protection
Brownout and output undervoltage protection
Cycle-by-cycle peak current limit
Soft start
User initiated micropower “Sleep Mode”
Open loop protection
Maximum duty cycle limit of 98%
User programmable fixed frequency operation
Min. off time of 150-350ns over freq range
VCC under voltage lockout
Internally clamped 13V gate drive
Fast 1.5A peak gate drive
Micropower startup (<200 µA)
Latch immunity and ESD protection
Parts also available Lead-Free
Description
Package
The µPFC IR1150 is a power factor correction (PFC) control IC designed to operate in continuous
conduction mode (CCM) over a wide range input line voltages. The IR1150 is based on IR's
proprietary "One Cycle Control" (OCC) technique providing a cost effective solution for PFC.
The proprietary control method allows major reductions in component count, PCB area and
design time while delivering the same high system performance as traditional solutions.
The IC is fully protected and eliminates the often noise sensitive line voltage sensing requirements
of existing solutions.
The IR1150 features include programmable switching frequency, programmable dedicated
8-Lead SOIC
over voltage protection, soft start, cycle-by-cycle peak current limit, brownout, open loop,
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UVLO and micropower startup current.
In addition, for low standby power requirements (Energy Star, 1W Standby, Blue Angel, etc.), the IC can be driven into sleep
mode with total current consumption below 200µA, by pulling the OVP pin below 0.62V.
IR1150 Application Diagram
AC LINE
BR ID GE
V OUT
AC NEUTRAL
IR 11 50
1 COM GATE 8
2 FREQ VCC 7
3 ISNS
VFB 6
4 OVP COMP 5
V cc
+
+
R TN
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IR1150SPBF pdf, 数据表
IR1150S/IR1150IS(PbF)
Detailed Pin Description
COM: Ground
This is the ground potential pin of the integrated con-
trol circuit. All internal devices are referenced to this
point.
VFB: Output Voltage Feedback
The output voltage of the boost converter is sensed
via a resistive divider and fed into this pin, which is
the inverting input of the output voltage error amplifier.
The impedance of the divider string must be low
enough so as to not introduce substantial error due
to the input bias currents of the amplifier, yet high
enough so as to minimize power dissipation. A typical
value of external divider impedance is 1M.
The error amplifier is a transconductance type which
yields high output impedance, thus increasing the
noise immunity of the error amplifier output. This also
eliminates input divider string interaction with
compensation feedback capacitors and reducing the
loading of divider string due to a low impedance
output of the amplifier.
COMP: Voltage Loop Compensation
External circuitry from this pin to ground
compensates the system voltage loop and soft start
time. This is the output of the voltage error amplifier.
This pin will be discharged via internal resistance
when a fault mode occurs.
GATE: Gate Drive Output
This is the gate drive output of the IC. Drive voltage is
internally limited and provides ±1.5A peak with
matched rise and fall times.
FREQ: Frequency Set
This is the user programmable frequency pin. An
external resistor from this pin to the COM pin pro-
grams the frequency. The operational switching fre-
quency range for the device is 50kHz – 200kHz.
ISNS: Current Sense input
This pin is the inverting Current Sense Input & Peak
Current Limit. The voltage at this pin is the negative
voltage drop, sensed across the system current
sense resistor, representing the inductor current.
This voltage is fed into the Peak Current Limit pro-
tection comparator with threshold arond -1V. This pro-
tection circuit incorporates a leading edge blanking
circuit following the comparator to improve noise
immunity of the protection process.
The current sense signal is also fed into the current
sense amplifier. The signal is amplified, filtered of
high frequency noise and then injected into a sum-
ming node where it is subtracted from the compen-
sation voltage VCOMP.
The signal on this pin must be previously filtered
with an RC cell to provide additional noise immunity.
The input impedance of this pin is 5k.
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VCC: Supply Voltage
This is the supply voltage pin of the IC and it is
monitored by the under voltage lockout circuit. It is
possible to turn off the IC by pulling this pin below
the minimum turn off threshold voltage, without
damage to the IC.
To prevent noise problems, a bypass ceramic
capacitor connected to VCC and COM should be
placed as close as possible to the IR1150S.
This pin is not internally clamped, therefore damage
will occur if the maximum voltage is exceeded.
OVP/EN: Over Voltage Protection / Enable
This pin is the input to the over voltage protection
comparator the threshold of which is internally pro-
grammed to 105.5% of VREF.
A resistive divider feeds this pin from the output volt-
age to COM and inhibits the gate drive whenever the
threshold is exceeded. Normal operation resumes
when the voltage level on this pin decreases to be-
low the pin threshold.
This pin is also used to activate “sleep” mode by
pulling the voltage level below 0.62V (typ).
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8







IR1150SPBF equivalent, schematic
IR1150S/IR1150IS(PbF)
PART MARKING INFORMATION
?
? MARKING CODE
P Lead Free Released
()
Non-Lead Free
Released
LOT CODE
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ORDER INFORMATION
Basic Part
8-Lead SOIC IR1150STR order IR1150STR
8-Lead SOIC IR1150ISTR order IR1150ISTR
Lead-free Part
8-Lead SOIC IR1150S order IR1150STRPbF
8-Lead SOIC IR1150ISTR order IR1150ISTRPbF
www.irf.com
The IR1150S(PbF) has been designed and qualified for the Consumer Market
The IR1150IS(PbF) has been designed and qualified for the Industrial Market
Qualification Standards can be found on IR’s Web site.
WORLD HEADQUARTERS: 233 Kansas Street, El Segundo, California 90245 Tel: (310) 252-7105
http://www.irf.com/ Data and specifications subject to change without notice. 6/13/2005
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