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부품번호 | PFS7323 기능 |
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기능 | (PFS7323 - PFS7329) High Power PFC Controller | ||
제조업체 | Power Integrations | ||
로고 | |||
전체 30 페이지수
PFS7323-7329
HiperPFS™-2 Family
High Power PFC Controller with Integrated
High-Voltage MOSFET and Qspeed™ Diode
Key Benefits
• Highly integrated for smallest boost PFC form factor
• Integrated controller and MOSFET in all package options
• Ultra-low reverse recovery loss diode (Qspeed) included in
extended eSIP™ package option
• Lossless internal current sense reduces component count
and system losses
• EN61000-3-2 Class C and D compliant
• Packaging optimized for high volume production
• Exposed pad connected to GROUND pin (CoolPAD)
• Eliminates insulating pad/heat-spreader
• Enhanced features
• Programmable power good (PG) signal
• User selectable power limit: Enables device swapping in a
given design to optimize efficiency/cost
• Integrated non-linear amplifier for fast output OV and UV
protection
• High efficiency and power factor across load range
• >95% efficiency from 10% load to full load
• <200 mW no-load consumption at 230 VAC in remote off-state
• Light load PF >0.9 at 20% load on optimized designs >200 W
• PF >0.95 at 50% load
• Enables 80+ Platinum designs
• Frequency adjusted over line voltage and each line cycle
• Spread-spectrum across >60 kHz window simplifies EMI
filtering requirements
• Lower boost inductance
• Provides up to 425 W peak output power
• >425 W peak power in power limit voltage regulation mode
Output Power Table
eSIP-16 Package
Product
Maximum Continuous
Output Power Rating at
90 VAC (in Full Mode)
Peak Output Power Rating
Full Mode
(R = 24.9 kW)
PFS7323L
PFS7324L
110 W
130 W
120 W
150 W
PFS7325L
185 W
205 W
PFS7326H
230 W
260 W
PFS7327H
290 W
320 W
PFS7328H
350 W
385 W
PFS7329H
380 W
425 W
Table 1. Output Power Table (See Table 2 on page 11 for Maximum Continuous
Output Power Ratings.)
• Protection features include: UV, OV, OTP, brown-in/out,
cycle-by-cycle current limit and power limiting for overload
protection
• Halogen free and RoHS compliant
Applications
• PC
• Printer
• LCD TV
• Video game consoles
• High-power adaptors
• High-power LED lighting
• Industrial and appliance
• Generic PFC converters
DK
PG VCC
CONTROL
VCC
FB
AC
IN
HiperPFS-2
C
PGT
S VGR
+
DC
OUT
www.powerint.com
Figure 1. Typical Application Schematic.
PI-6691-050313
June 2013
Free Datasheet http://www.datasheet4u.com/
PFS7323-7329
DRAIN (D)
BOOST DIODE CATHODE (K)
Power
MOSFET
senseFET
VCC
FEEDBACK/
COMPENSATION Pin
OV/UV
Latch
IS
IOCP
+
-
LEB
OCP
VOLTAGE MONITOR (V)
BIAS POWER (VCC)
IV
INPUT
LINE INTERFACE
Peak
Detector
INTERNAL
SUPPLY
SOFT-
START
+
- VCC+
Input UV
(IUV+/IUV-)
IVPK MON
MOFF (IREF - IV)
~(VO-VIN)
CINT
FBOV FCCBOUOFVFF/F/ IOCP
VREF
VPG(H)
IPGT FFBBCCOUVV
IV
IREF
REFERENCE
AND BAND GAP
REFERENCE
(R)
Comparator
-
+
VOFF
+
-
Comparator
VE
CINT
Feedback-OVP/OFF
Comparator
VOaFvF(eVirsEa)gaaenfudonpicsetriuoasnteinodgf
the error-voltage
to reduce the
frequency as a
function of output power
Frequency
Slide
VE
IVPK
Transconductance
Error-Ampli er
1 kHz Filter
Internal
Reference
VREF
+
VCC
FBGM
+
-
FBGM
+
-
cmurOreNnits
the switch
sense scale
factor which is a function
of the peak input voltage
-
C-UV/OFF
Comparator
+
-
FBCOV
+-
+-
FBCUV
FFBBOONFF/ VFB
FEEDBACK
(FB)
Buffer and
De-Glitch Filter
COMPENSATION
(C)
PON × MON × IS
+ CUV/COFF
INPUT UV
OTP SOA
VFB
+ VPG(H)
VCC
IPGT
POWER GOOD
THRESHOLD
(PGT)
POWER GOOD
(PG)
SOURCE (S)
GROUND (G)
Figure 3. Functional Block Diagram.
Functional Description
The HiperPFS-2 is a variable switching frequency boost PFC
solution. More specifically, it employs a constant amp-second
on-time and constant volt-second off-time control algorithm.
This algorithm is used to regulate the output voltage and shape
the input current to comply with regulatory harmonic current
limits (high power factor). Integrating the switch current and
controlling it to have a constant amp-sec product over the
on-time of the switch allows the average input current to follow
the input voltage. Integrating the difference between the output
and input voltage maintains a constant volt-second balance
dictated by the electro-magnetic properties of the boost
inductor and thus regulates the output voltage and power.
More specifically, the control technique sets constant volt-
seconds for the off-time (tOFF). The off-time is controlled such
that:
^VO - VINh # tOFF = K1
(1)
PI-6697-050312
Since the volt-seconds during the on-time must equal the
volt-seconds during the off-time, to maintain flux equilibrium in
the PFC choke, the on-time (tON) is controlled such that:
VIN # tON = K1
(2)
The controller also sets a constant value of charge during each
on-cycle of the power MOSFET. The charge per cycle is varied
gradually over many switching cycles in response to load
changes so it can be regarded as substantially constant for a
half line cycle. With this constant charge (or amp-second)
control, the following relationship is therefore also true:
IIN # tON = K2
Substituting tON from (2) into (3) gives:
I IN
=
VIN
#
K2
K1
(3)
(4)
4
Rev. B 06/13
www.powerint.com
Free Datasheet http://www.datasheet4u.com/
4페이지 PFS7323-7329
120 230 VAC
110
100
90
80
70
60
50
40
30
20
10 Peak Load
0
135 VAC
180 VAC
115 VAC
45 90 135
Line Conduction Angle (°)
90 VAC
180
120
110
VIN = 115 VAC
100
90
80
70
60
50
40
30
20
10
0
45
100% Peak Load
75% Peak Load
Expected Frequency
Range at Peak
Rated Load
50% Peak Load
25% Peak Load
90 135 180
Line Conduction Angle (°)
Figure 9. (a) Frequency Variation Over Line Half-Cycle as a Function of Input Voltage (b) Frequency Variation Over Line Half-Cycle as a Function of Load.
~5 V
~5 V
VIN < ~140 VAC
~1.25 V
~0.8 V
VIN > ~170 VAC
~1.25 V
~5 V
VE (Full Power)
~140 VAC
VIN
~170 VAC
PI-6864-050313
Figure 10. VOFF vs. VE and VOFF vs. Input Voltage.
and FEEDBACK pins are satisfied and the sensed VOLTAGE
MONITOR pin current is above IUV+ ,the IC applies a ~6 mA
current sink through the VOLTAGE MONITOR pin and checks
that the status of the REFERENCE pin voltage is still in a valid
range. This checks to ensure that the FEEDBACK and
REFERENCE pins are not shorted together. In the event that
these pin voltage are shorted or the REFERENCE pin current is
no longer in the valid range, VOLTAGE MONITOR pin holds the
6 mA current sink indefinitely until the REFERENCE pin is in the
valid range. Figure 8 illustrates this sequence.
Timing Supervisor and Operating Frequency Range
Since the controller is expected to operate with a variable
switching frequency over the line frequency half-cycle, typically
spanning a range of 24 – 110 kHz, the controller also features a
timing supervisor function which monitors and limits the
maximum switch on-time and off-time as well as ensures a
minimum cycle off-time.
Figure 9a shows the typical half-line frequency profile of the
device switching frequency as a function of input voltage at
peak load conditions. Figure 9b shows for a given line
condition the effect of EcoSmart™ to the switching frequency
as a function of load. The switching frequency is not a function
of boost choke inductance in CCM (continuous conduction
mode) operation.
EcoSmart
The HiperPFS-2 includes an EcoSmart mode wherein the
internal error signal (VE) is used to detect the converter output
power. Since the internal error-signal is proportional to the
output power, this signal level is used to set the average
switching frequency as a function of output power. The off-time
itnhteeginrtaetronracl oenrrtoror-lvroelfteargeencleeve(Vl O(oFFu) tipsuctopnotrwoeller)dtowaitlhlorwestpheect to
converter to maintain output voltage regulation and relatively flat
conversion efficiency between 20% to 100% of rated load
www.powerint.com
7
Rev. B 06/13
Free Datasheet http://www.datasheet4u.com/
7페이지 | |||
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부품번호 | 상세설명 및 기능 | 제조사 |
PFS7323 | (PFS7323 - PFS7329) High Power PFC Controller | Power Integrations |
PFS7323L | (PFS7323 - PFS7329) High Power PFC Controller | Power Integrations |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |