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PFS7329H 参数 Datasheet PDF下载

PFS7329H图片预览
型号: PFS7329H
PDF下载: 下载PDF文件 查看货源
内容描述: 高功率PFC控制器,集成高压MOSFET和二极管Qspeed的 [High Power PFC Controller with Integrated High-Voltage MOSFET and Qspeed Diode]
分类和应用: 二极管功率因数校正高压控制器
文件页数/大小: 30 页 / 4360 K
品牌: POWERINT [ Power Integrations ]
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PFS7323-7329  
Application Example  
A High Efficiency, 350 W, 385 VDC Universal Input PFC  
The circuit shown in Figure 14 is designed using a PFS7328H  
device from the HiperPFS-2 family of integrated PFC controllers.  
This design is rated for a continuous output power of 350 W  
and provides a regulated output voltage of 385 VDC nominal  
maintaining a high input power factor and overall efficiency from  
light load to full load.  
The PFS7328H IC requires a regulated supply of 12 V for  
operation and must not exceed 15 V. Resistors R10, R11, R12,  
Zener diode VR1, and transistor Q2 form a series pass regulator  
that prevents the supply voltage to IC U1 from exceeding 12 V.  
Capacitors C6, and C9 filter the supply voltage and provide  
decoupling to ensure reliable operation of IC U1. Diode D5  
provides reverse polarity protection.  
Fuse F1 provides protection to the circuit and isolates it from the  
AC supply in case of a fault. Diode bridge BR1 rectifies the AC  
input. Capacitors C1, C2, C3, and C4 together with inductors  
L1, L2, and L3 form the EMI filter reducing the common mode  
and differential mode noise. Resistors R1, R2 and CAPZero, IC  
U2 are required to discharge the EMI filter capacitors once the  
circuit is disconnected. CAPZero eliminates static losses in R1  
and R2 by only connecting these components across the input  
when AC is removed.  
Resistor R15 programs the output voltage level [via the POWER  
GOOD THRESHOLD (PGT) pin] below which the POWER  
GOOD [PG] pin will go into a high-impedance state. IC U1 is  
configured in full power mode by resistor R14. Capacitor C8  
decouples REFERENCE pin of IC U1.  
The rectified AC input voltage of the power supply is sensed by  
IC U1 using resistors R7, R8 and R9. The capacitor C7 filters  
any noise on this signal.  
The boost converter stage consists of inductor L5, and the  
HiperPFS-2 IC U1. This converter stage works as a boost  
converter and controls the input current of the power supply  
while simultaneously regulating the output DC voltage. Diode  
D3 prevents a resonant build up of output voltage at start-up by  
bypassing inductor L5 while simultaneously charging output  
capacitor C13. Thermistor RT1 limits the inrush input current of  
the circuit at start-up and prevents saturation of L5. In most  
high-performance designs, a relay will be used to bypass the  
thermistor after start-up to improve power supply efficiency.  
Capacitor C10 is used for reducing the loop length and area of  
the output circuit to reduce EMI and overshoot of voltage  
across the drain and source of the MOSFET inside U1 at each  
switching instant.  
Divider network comprising of resistors R18, R19, R20, and  
R21 are used to scale the output voltage and provide feedback  
to IC U1. Capacitor C14 enables rapid correction of output  
voltage overshoot or undershoot resulting from transient loading.  
Resistor R17, R16, and capacitors C12 and C11 are required for  
shaping the loop response of the feedback network. The  
combination of resistor R16 and capacitor C12 provide a low  
frequency zero and the resistor R17, R16 and capacitor C12  
form a low frequency pole. C15 and R22 attenuate high-  
frequency noise.  
Diode D6 protects against an accidentally shorted capacitor  
C12 by safely shutting down the IC.  
D3  
1N5408-T  
VO  
D
K
BR1  
L5  
360 µH  
+
GBU8K-BP  
F1  
6.3 A  
R18  
1.5 MΩ  
1%  
800 V  
L
R7  
1.5 MΩ  
1%  
R1  
C14  
47 nF  
200 V  
220 kΩ  
R19  
787 kΩ  
C1  
C3  
D1  
D2  
680 nF  
275 VAC  
680 pF  
250 VAC  
PG  
VCC  
FB  
L2  
9 mH  
R8  
1.5 MΩ  
1%  
R20  
1.6 MΩ  
1%  
CAPZero  
C2  
220 nF  
275 V  
RV1  
320 VAC  
U2  
C5  
1 µF  
450 V  
CONTROL  
CAP005DG  
R9  
1 MΩ  
1%  
R3  
10 Ω  
2 W  
1%  
C
HiperPFS-2  
C4  
680 pF  
250 VAC  
E
U1  
PFS7328H  
R17  
487 Ω  
PGT  
R2  
220 kΩ  
RT1  
S
V
G
R
2.5 Ω  
N
O
t
L3  
220  
µ
H
R16  
7.5 kΩ  
1%  
L1  
Ferrite Bead  
C13  
270 µF  
450 V  
DC  
OUT  
R5  
16 kΩ  
R4  
10 kΩ  
R10  
1 Ω  
1%  
C10  
10 nF  
1 kV  
D4  
BAV16  
Q1  
MMBT4403  
Q2  
MMBT4401LT1G  
+
D6  
BAV116  
R12  
2.2 kΩ  
1%  
R6  
3 kΩ  
3
Auxiliary  
Power  
Supply  
1
C6  
C9  
3.3 µF  
25 V  
C11  
22 nF  
25 V  
R15  
100 kΩ  
1%  
C12  
+
D5  
R22  
47 µF  
50 V  
2.2 µF  
S1AB  
3 kΩ  
25 V  
U3  
Remote  
ON  
R21  
60.4 kΩ  
1%  
LTV817A  
2
VR1  
1N4743A  
13 V  
R14  
C8  
470 pF  
50 V  
C15  
47 nF  
25 V  
24.9 kΩ  
D1  
S1AB  
4
C7  
22 nF  
50 V  
R11  
1%  
1 Ω  
D2  
1%  
VO  
PI-6971-041713  
Figure 14. 350 W PFC using PFS7328H.  
12  
Rev. B 06/13  
www.powerint.com