FAN6605MX [ONSEMI]

用于反激转换器的 mWSaver™ PWM 控制器,65KHz,线路 OVP,过电压/欠电压保护;
FAN6605MX
型号: FAN6605MX
厂家: ONSEMI    ONSEMI
描述:

用于反激转换器的 mWSaver™ PWM 控制器,65KHz,线路 OVP,过电压/欠电压保护

控制器 信息通信管理 开关 光电二极管 转换器
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January 2015  
FAN6605  
mWSaverPWM Controller  
Features  
Description  
.
mWSaverTechnology Provides Industry’s Best-in-  
Class Standby Power  
This highly integrated PWM controller provides several  
features to enhance the performance of flyback  
converters.  
<100 mW at 25-mW Load for LCDM Adaptor  
Internal High-Voltage JFET Startup  
Low Operating Current: Under 2 mA  
To minimize standby power consumption, a proprietary  
adaptive green-mode function reduces switching  
frequency at light-load condition. To avoid acoustic-  
noise problems, the minimum PWM frequency is set  
above 23 kHz. This green-mode function enables the  
power supply to meet international power conservation  
requirements, such as Energy Star®. With the internal  
high-voltage startup circuitry, the power loss caused by  
bleeding resistors is also eliminated. To further reduce  
power consumption, FAN6605 uses the BiCMOS  
process, which allows an operating current of only  
2 mA. The standby power consumption can be under  
100 mW for most of LCD monitor power supply designs.  
Adaptively Decrease PWM Frequency with  
Cycle Skipping to 23 kHz at Light-Load  
Condition for Better Efficiency  
Feedback Impedance Switching During  
Minimum Load or No Load  
.
Proprietary Asynchronous Frequency Hopping  
Technique that Reduces EMI  
.
.
.
.
Fixed PWM Frequency: 65 kHz  
Internal Leading-Edge Blanking  
FAN6605 integrates a frequency-hopping function that  
reduces EMI emission of a power supply with minimum  
Built-in Synchronized Slope Compensation  
Auto-Restart Protection: Feedback Open-Loop  
Protection (OLP), VDD Over-Voltage Protection  
(OVP), Over-Temperature Protection (OTP), and  
Line Over-Voltage Protection  
line  
filters.  
The  
built-in  
synchronized  
slope  
compensation achieves a stable peak-current-mode  
control and improves noise immunity. The proprietary  
line compensation ensures constant output power limit  
over a wide AC input voltage range from 90 VAC to  
.
.
.
Soft Gate Drive with Clamped Output Voltage: 18 V  
VDD Under-Voltage Lockout (UVLO)  
264 VAC  
.
FAN6605 provides many protection functions. The  
internal feedback open-loop protection circuit protects  
the power supply from open-feedback-loop condition or  
output-short condition. It also has line under-voltage  
protection (brownout protection) and over-voltage  
protection using an input voltage sensing pin (VIN).  
Programmable Constant Power Limit  
(Full AC Input Range)  
.
.
.
Internal OTP Sensor with Hysteresis  
Build-in 5-ms Soft-Start Function  
Input Voltage Sensing (VIN Pin) for Brown-In/Out  
Protection with Hysteresis and Line Over-Voltage  
Protection  
FAN6605 is available in a 7-pin SOP package.  
Applications  
General-purpose switched-mode power supplies and  
flyback power converters, including:  
.
.
LCD Monitor Power Supply  
Open-Frame SMPS  
ENERGY STAR® is a registered trademark of the U.S. Department of Energy and the U.S. Environmental Protection Agency.  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
Ordering Information  
Operating  
Part Number Temperature  
Range  
PWM  
Frequency  
Packing  
Method  
Package  
7-Lead, Small Outline Integrated Circuit  
FAN6605MX  
-40 to +105°C (SOIC), Depopulated JEDEC MS-112, .150  
Inch Body  
65 kHz  
Reel & Tape  
Application Diagram  
N
EMI  
Filter  
Vo+  
Vo-  
+
+
L
1
VIN  
7
6
VDD  
HV  
+
5
GATE  
2
FB  
3
SENSE  
4
FAN6605  
Figure 1.  
Typical Application  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
2
Internal Block Diagram  
HV  
7
OTP  
Re-start  
Protection  
OVP  
OLP  
VIN-OVP  
VDD  
Brownout Protection  
Soft  
Driver  
5
GATE  
VPWM  
Cycle  
Skipping  
S
R
Q
VDD  
6
Internal  
BIAS  
UVLO  
VRESET  
OSC  
Soft-Start  
Comparator  
Pattern  
Generator  
Circuit  
Blanking  
SENSE  
Soft-Start  
VLimit  
3
Current Limit  
Comparator  
VRESET  
OVP  
Debounce  
Green  
Mode  
PWM  
Comparator  
VDD-OVP  
5.3V  
Max.  
Duty  
VPWM  
VIN-ON / VIN-OFF  
Slope  
Compensation  
3R  
Brownout Protection  
VLimit  
2
FB  
VIN  
1
High/Low  
Line Compensation  
R
OLP  
Delay  
OLP  
VIN-OVP  
Debounce  
VFB-OLP  
OLP  
Comparator  
VIN-Protect  
4
GND  
Figure 2.  
Internal Block Diagram  
Marking Information  
7
Z: Plant Code  
X: 1-Digit Year Code  
Y: 1-Digit Week Code  
TT: 2-Digit Die Run Code  
T: Package Type (M: SOP)  
M: Manufacture Flow Code  
ZXYTT  
6605  
TM  
Figure 3. Top Mark  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
3
Pin Configuration  
SOP-7  
VIN  
FB  
1
2
3
4
7
HV  
SENSE  
6
5
VDD  
GND  
GATE  
Figure 4.  
Pin Configuration (Top View)  
Pin Definitions  
Pin #  
Name  
Description  
Line-voltage detection. The line-voltage detection is used for brownout protection with hysteresis.  
Constant output power limit over universal AC input range is also achieved using this VIN pin. It  
is suggested to add a low-pass filter to filter out line ripple on the bulk capacitor. Pulling VIN  
HIGH also triggers auto-restart protection.  
1
VIN  
The signal from the external compensation circuit is fed into this pin. The PWM duty cycle is  
determined in response to the signal on this pin and the current-sense signal on the SENSE pin.  
2
3
FB  
Current sense. The sensed voltage is used for peak-current-mode control and cycle-by-cycle  
current limiting.  
SENSE  
GND  
4
5
Ground  
GATE The totem-pole output driver. Soft-driving waveform is implemented for improved EMI.  
Power supply. The internal protection circuit disables PWM output as long as VDD exceeds the  
OVP trigger point.  
6
7
VDD  
HV  
For startup, this pin is connected to the line input or bulk capacitor in series with resistors.  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
4
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  
VVDD  
VFB  
DC Supply Voltage(1, 2)  
FB Pin Input Voltage  
30  
6.0  
6.0  
6.0  
700  
400  
V
V
-0.3  
-0.3  
-0.3  
VSENSE  
VVIN  
VHV  
SENSE Pin Input Voltage  
VIN Pin Input Voltage  
V
V
HV Pin Input Voltage  
V
Power Dissipation (TA50°C)  
PD  
mW  
Thermal Resistance (Junction-to-Air)  
Operating Junction Temperature  
153  
JA  
TJ  
C/W  
C  
-40  
-55  
+125  
+150  
+260  
TSTG  
TL  
Storage Temperature Range  
C  
Lead Temperature (Wave Soldering or IR, 10 Seconds)  
C  
Human Body Model,  
All Pins Except HV Pin  
JEDEC: JESD22-A114  
5.5  
2.0  
ESD  
kV  
Charged Device Model,  
All Pins Except HV Pin  
JEDEC: JESD22-C101  
Notes:  
1. All voltage values, except differential voltages, are given with respect to the network ground terminal.  
2. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.  
3. ESD with HV pin: CDM=2000 V and HBM=3500 V.  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
5
 
 
Electrical Characteristics  
VDD=11~24 V and TA=-40~105C unless otherwise noted.  
Symbol  
Parameter  
Conditions  
Min.  
Typ.  
Max.  
Unit  
VDD Section  
VOP  
Continuously Operating Voltage  
Full Load  
22  
17  
11  
8.8  
30  
2
V
V
VDD-ON Start Threshold Voltage  
VDD-OFF Protection Mode  
15  
9
16  
10  
V
UVLO  
IDD-ST  
Normal Mode  
6.8  
7.8  
V
Startup Current  
VDD-ON 0.16 V  
µA  
mA  
µA  
IDD-OP  
IDD-OLP  
Operating Supply Current  
Internal Sink Current  
VDD=15 V, GATE Open  
VDD-OLP+0.1 V  
30  
6.5  
25  
75  
60  
7.5  
26  
90  
Threshold Voltage on VDD for HV  
JFET Turn-On  
VDD-OLP  
8.0  
27  
V
V
VDD-OVP VDD Over-Voltage Protection  
VDD Over-Voltage Protection  
tD-VDDOVP  
125  
200  
µs  
Debounce Time  
HV Section  
VDC=120 V, VDD=10 µF,  
VDD=0 V  
IHV  
Supply Current Drawn from HV Pin  
Leakage Current after Startup  
mA  
µA  
2.0  
3.5  
1
5.0  
20  
HV=700 V, VDD=VDD-  
OFF+1 V  
IHV-LC  
VDD  
VDD  
VDD-ON  
VDD-ON  
VDD-OFF  
UVLO  
VDD-OLP  
t
t
Normal Mode  
Protection Mode  
Figure 5.  
VDD Behavior  
Continued on the following page…  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
6
Electrical Characteristics  
VDD=11~24 V and TA=-40~105C unless otherwise noted.  
Symbol  
Parameter  
Conditions  
Min.  
Typ.  
Max.  
Unit  
Oscillator Section  
62  
±4.5  
20  
65  
±5.2  
23  
68  
±5.9  
26  
Center Frequency  
Hopping Range  
fOSC  
Frequency in Normal Mode  
kHz  
fOSC-G  
tHOP  
tSKIP-N  
tSKIP-G  
Green-Mode Frequency  
Hopping Period  
kHz  
ms  
ms  
ms  
10  
12  
14  
Pulse-Skipping Period(4)  
Pulse-Skipping Period(4)  
VFB-SKIP<VFB<VFB-N  
VFB-G<VFB<VFB-SKIP  
180  
90  
200  
220  
Frequency Variation vs. VDD  
Deviation  
fDV  
fDT  
VDD=11 V to 22 V  
5
5
%
%
Frequency Variation vs.  
Temperature Deviation  
TA=TJ =-40 to 105C  
VIN Section  
PWM Turn-Off (Brownout)  
VIN-OFF  
VIN-ON  
VIN-Protect  
tVIN-Protect  
0.66  
0.70  
0.74  
V
V
Threshold Voltage  
VIN-OFF  
0.17  
+
VIN-OFF  
0.20  
+
VIN-OFF  
0.23  
+
PWM Turn-On (Brown-in)  
Threshold Voltage  
Threshold Voltage of VIN Over-  
Voltage Protection  
5.1  
60  
5.3  
5.5  
V
Debounce Time of VIN Over-  
Voltage Protection  
100  
140  
µs  
Current-Sense Section  
VLIMIT at  
VIN=1 V  
Threshold Voltage for Current Limit VIN=1 V  
Threshold Voltage for Current Limit VIN=3 V  
0.80  
0.67  
0.83  
0.70  
0.86  
0.73  
V
V
VLIMIT at  
VIN=3 V  
tPD  
tLEB  
tSS  
Delay to Output  
100  
290  
5.5  
200  
340  
7.0  
ns  
ns  
Leading-Edge Blanking Time  
Period During Soft-Start Time  
Steady State  
Startup Time  
240  
4.0  
ms  
VLimit  
=0.92V  
=5.3V  
VIN-Protect  
VIN-OFF  
VSENSE =0.83V  
VSENSE =0.7V  
VIN  
VIN=1V  
VIN=3V  
Figure 6.  
VIN vs. VSENSE  
Continued on the following page…  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
7
Electrical Characteristics  
VDD=11~24 V and TA=-40~105C unless otherwise noted.  
Symbol  
Parameter  
Conditions  
Min.  
Typ.  
Max.  
Unit  
Feedback Input Section  
AV  
Internal FB Voltage Attenuation  
Input Impedance  
1/4.5  
10  
1/4.0  
15  
1/3.5  
19  
V/V  
kΩ  
V
ZFB  
VFB=4 V  
VFB-OPEN The Maximum Clamp of FB Voltage  
FB Pin Open  
5.1  
5.3  
5.5  
FB Open-Loop Protection Triggering  
VFB-OLP  
Level  
4.4  
4.6  
4.8  
V
TA=25C  
Delay Time of FB Pin Open-loop  
Protection  
tD-OLP  
45.0  
2.8  
62.5  
70.0  
3.2  
ms  
VFB-N  
VFB-G  
Green-Mode Entry FB Voltage  
Green-Mode Ending FB Voltage  
3.0  
V
V
VFB-N - 0.6  
FB Threshold Voltage for Changing  
Pulse-Skipping Period(4)  
VFB-SKIP  
2.5  
2.7  
2.9  
V
FB Threshold Voltage for Zero-Duty  
Recovery  
VFB-ZDCR  
1.6  
1.4  
1.8  
1.6  
2.0  
1.8  
V
V
VFB-ZDC FB Threshold Voltage for Zero-Duty  
VFB-ZDCR -  
ZDC Hysteresis  
VFB-ZDC  
0.12  
0.15  
0.19  
V
PWM Frequency  
fOSC  
with cycle skipping  
fOSC-G  
VFB-ZDC VFB-ZDCR  
VFB-SKIP  
VFB-G  
VFB-N  
VFB  
Figure 7.  
Cycle Skipping vs. VFB  
Continued on the following page…  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
8
Electrical Characteristics  
VDD=11~24 V and TA=-40~105C unless otherwise noted.  
Symbol  
Parameter  
Conditions  
Min.  
Typ.  
Max.  
Unit  
GATE Section  
DCYMAX Maximum Duty Cycle  
VGATE-L Gate Low Voltage  
VGATE-H Gate High Voltage  
60  
8
75  
90  
%
V
VDD=15 V, IO=50 mA  
VDD=12 V, IO=50 mA  
VDD=15 V, CL=1 nF  
VDD=15 V, CL=1 nF  
1.5  
V
Gate Rising Time  
Gate Falling Time  
tr  
tf  
ns  
ns  
100  
30  
IGATE-  
SOURCE  
mA  
V
Gate Source Current  
VDD=15 V, GATE=6 V  
VDD=22 V  
700  
VGATE-  
CLAMP  
Gate Output Clamping Voltage  
18  
Over-Temperature Protection Section (OTP)  
TOTP  
TRestart  
Notes:  
Protection Junction Temperature(5,7)  
Restart Junction Temperature(6,7)  
125  
°C  
°C  
TOTP-25  
4. Guarantee by design.  
5. When OTP is activated, the PWM switching is shut down.  
6. When junction temperature is lower than this level, IC resumes PWM switching.  
7. These parameters are guaranteed by design.  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
9
 
 
 
Typical Performance Characteristics  
Figure 9. Operation Supply Current (IDD-OP  
)
Figure 8. Startup Current (IDD-ST) vs. Temperature  
vs. Temperature  
Figure 10.Start Threshold Voltage (VDD-ON  
)
Figure 11.Minimum Operating Voltage (VDD-OFF  
vs. Temperature  
)
vs. Temperature  
Figure 12.Supply Current Drawn from HV Pin (IHV  
)
Figure 13.HV Pin Leakage Current After Startup  
(IHV-LC) vs. Temperature  
vs. Temperature  
Figure 14.Frequency in Normal Mode (fOSC  
)
Figure 15.Maximum Duty Cycle (DCYMAX  
)
vs. Temperature  
vs. Temperature  
© 2014 Fairchild Semiconductor Corporation  
FAN6605 • Rev. 1.0  
www.fairchildsemi.com  
10  
Typical Performance Characteristics  
Figure 16.FB Open-Loop Trigger Level (VFB-OLP  
)
Figure 17.Delay Time of FB Pin Open-Loop Protection  
(tD-OLP) vs. Temperature  
vs. Temperature  
Figure 18.PWM Turn-Off Threshold Voltage  
(VIN-OFF & VIN-ON) vs. Temperature  
Figure 19.VDD Over-Voltage Protection (VDD-OVP  
)
vs. Temperature  
Figure 20.VIN vs. VLIMIT  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
11  
Functional Description  
Startup Current  
Gate Output / Soft Driving  
For startup, the HV pin is connected to the line input or  
bulk capacitor in series with diodes and/or resistors. If HV  
pin is connected to the line input, a 1-kV/ 1-A diode and a  
100 resistor are recommended. If HV pin is connected  
to the bulk capacitor, only the resistor is required. Startup  
current drawn from pin HV (typically 3.5 mA) charges the  
hold-up capacitor through the diode and resistor. When  
the VDD capacitor level reaches VDD-ON, the startup current  
switches off. At this moment, only the VDD capacitor  
supplies the FAN6605 to maintain VDD before the  
auxiliary winding of the main transformer to provide the  
operating current.  
The BiCMOS output stage is a fast totem-pole gate  
driver. Cross conduction has been avoided to minimize  
heat dissipation, increase efficiency, and enhance  
reliability. The output driver is clamped by an internal  
18 V Zener diode to protect power MOSFET transistors  
against undesirable gate over-voltage. A soft-driving  
circuit is implemented to minimize EMI.  
Soft-Start  
For many applications, it is necessary to minimize the  
inrush current at startup. The built-in 5.5 ms soft-start  
circuit significantly reduces the startup current spike and  
output voltage overshoot.  
Operating Current  
Operating current is below 2 mA. The low operating  
current enables better efficiency and reduces the  
requirement of VDD hold-up capacitance.  
Slope Compensation  
The sensed voltage across the current-sense resistor is  
used for peak-current-mode control and pulse-by-pulse  
current limiting. Built-in slope compensation improves  
stability and prevents sub-harmonic oscillation.  
FAN6605 inserts a synchronized positive-going ramp at  
every switching cycle as slope compensation.  
Green-Mode Operation  
The proprietary green-mode function provides an off-  
time modulation to reduce the switching frequency in  
light-load and no-load conditions. The on time is limited  
for better abnormal or brownout protection. VFB, which is  
derived from the voltage feedback loop, is taken as the  
reference. Once VFB is lower than the threshold voltage,  
switching frequency is continuously decreased with  
cycle skipping to the minimum green-mode frequency of  
around 23 kHz.  
Constant Output Power Limit  
For constant output power limit over universal input-  
voltage range, the peak-current threshold is adjusted by  
the voltage of the VIN pin. Since the VIN pin is  
connected to the rectified AC input line voltage through  
the resistive divider, a higher line voltage generates a  
higher VIN voltage. The threshold voltage decreases as  
VIN increases, making the maximum output power at  
high-line input voltage equal to that at low-line input.  
The value of R-C network should not be so large that it  
affects the power limit (shown in Figure 21). R and C  
should be less than 100 and 470 pF, respectively.  
Current Sensing / PWM Current Limiting  
Peak-current-mode control is utilized to regulate output  
voltage and provide pulse-by-pulse current limiting. The  
switching current is detected by the current-sensing  
resistor of SENSE pin. The PWM duty cycle is  
determined by this current sense signal and VFB, the  
feedback voltage. When the voltage on the SENSE pin  
reaches around VCOMP=(VFB0.6)/4, the PWM switching  
turns off immediately.  
Leading-Edge Blanking (LEB)  
Each time the power MOSFET is switched on, a turn-on  
spike occurs on the sense resistor. To avoid premature  
termination of the switching pulse, a leading-edge  
blanking time is built in. During this blanking period, the  
current-limit comparator is disabled and cannot switch  
off the gate driver.  
FAN6605  
GATE  
R
Blanking  
SENSE  
Circuit  
C
Under-Voltage Lockout (UVLO)  
The turn-on and turn-off thresholds are fixed internally at  
16 V and 7.8 V in normal mode. During startup, the  
hold-up capacitor must be charged to 16 V through the  
startup resistor to enable the IC. The hold-up capacitor  
continues to supply VDD before the energy can be  
delivered from auxiliary winding of the main transformer.  
VDD must not drop below 7.8 V during startup. This  
UVLO hysteresis window ensures that the hold-up  
capacitor is adequate to supply VDD during startup.  
Figure 21. Current-Sense R-C Filter  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
12  
 
and turns off most of the internal circuitry. The thermal  
sensor turns internal circuitry on again after the IC’s  
junction temperature drops by 25C. Thermal overload  
protection is designed to protect the FAN6605 in the  
event of a fault condition. For continual operation, the  
controller should not exceed the absolute maximum  
junction temperature of TJ = +140C.  
VDD Over-Voltage Protection  
VDD over-voltage protection prevents damage due to  
abnormal conditions. Once the VDD voltage is over the  
over-voltage protection voltage (VDD-OVP), and lasts for tD-  
VDDOVP, the PWM pulses are disabled. When the VDD  
voltage drops below the UVLO, the internal startup circuit  
turns on, and VDD is charged to VDD-ON to restart IC.  
Limited Power Control  
Feedback Impedance Switching  
The FB voltage is saturated HIGH when the power  
supply output voltage drops below its nominal value and  
shunt regulator (KA431) does not draw current through  
the opto-coupler. This occurs when the output feedback  
loop is open or output is short circuited. If the FB voltage  
FAN6605 actively varies FB-pin impedance (ZFB) to  
reduce no-load power consumption. This technique  
can further reduce operating current of the controller  
when FB-pin voltage drops below VFB-ZDC  
.
is higher than a built-in threshold for longer than tD-OLP  
,
Brownout Protection  
PWM output is turned off. As PWM output is turned off,  
VDD begins decreasing since no more energy is  
delivered from the auxiliary winding.  
Since the VIN pin is connected through a resistive  
divider to the rectified AC input line voltage, it can also  
be used for brownout protection. If VIN is less than 0.7 V,  
the PWM output is shut off. When VIN reaches over  
0.9 V, the PWM output is turned on again. The  
hysteresis window for ON/OFF is around 0.2 V. The  
brownout voltage setting is determined by the potential  
divider formed with RUpper and RLower. Equations to  
calculate the resistors are shown below:  
As the protection is triggered, VDD enters into UVLO  
mode. This protection feature continues as long as the  
over loading condition persists. This prevents the power  
supply from overheating due to overloading conditions.  
Noise Immunity  
Noise on the current sense or control signal may cause  
significant pulse-width jitter, particularly in continuous-  
conduction mode. Slope compensation helps alleviate  
this problem. Good placement and layout practices  
should be followed. Avoiding long PCB traces and  
component leads, locating compensation and filter  
components near the FAN6605, and increasing the gate  
resistor from GATE pin to MOSFET improve  
performance.  
RLower  
V
VAC 2,(unit V)  
IN  
(1)  
RLower RUpper  
Thermal Overload Protection  
Thermal overload protection limits total power  
dissipation. When the junction temperature exceeds TJ=  
+140C, the thermal sensor signals the shutdown logic  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
13  
Typical Application Circuit  
R6  
R7  
12V 1  
1
12V  
P1  
C7  
N18  
L2  
2
12V  
C5  
1
3
R8  
C10  
C8  
C9  
+
+
F1  
2
N1  
N1A  
R1  
N2  
BD 1  
C1  
C2  
CN 1  
TX 1  
L
L1  
4
1
N4  
4
12  
11  
N17 D1  
M1  
1
2
3
C3  
N28  
R4  
R5  
N21  
ZD 1  
VIN  
C4  
R3  
C6  
AC IN  
R2  
8
N20  
7
5V 1  
1
5V  
P2  
L3  
2
5V  
N
N3  
N5 N6  
6
1
C11  
+
1
3
D3  
R14  
2
N7  
10  
9
R17  
2
D4  
C15  
C13  
C14  
+
+
C12  
R13  
D5  
R9  
N8  
P3  
SG ND  
Q1  
N30  
R10  
R16  
N10  
D2  
1 N9  
R11  
R12  
N29  
R15  
HV  
VIN  
U1  
VIN  
1
2
3
4
7
HV  
R20  
FB  
VD D  
FB  
5V 1  
R22  
R19  
6
5
N12  
N13  
SEN SE  
VD D  
U2  
GA TE  
GN D  
GA TE  
12V  
5V  
C16  
C18  
C19  
FAN6605MX  
+
R28  
C17  
SEN SE  
R23  
R24  
R25  
C20  
R21  
R
N14  
N15  
U3  
N16  
R18  
R26  
R27  
Figure 22. 44 W Flyback 12 V/2 A, 5 V/4 A Application Circuit  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
14  
Bill of Materials  
Designator  
Part Type  
BD 4 A/600 V  
Designator  
Part Type  
MOS 9 A/600 V  
BD1  
C1  
Q1  
R1  
R2  
R3  
R 1.5 M1/4 W  
R 1.5 M1/4 W  
R 10 M1/4 W  
R 47 1/4 W  
NC  
YC 2200 pF/Y1  
YC 2200 pF/Y1  
XC 0.33 µF/300 V  
NC  
C2  
C3  
C4  
R4, R5, R6, R7  
C5  
R8, R17, R25, R27  
YC 2200 pF/Y1  
CC 2200 pF/100 V  
CC 1000 pF/100 V  
EC 1000 µF/25 V  
EC 470 µF/25 V  
CC 100 pF/50 V  
EC 100 µF/400 V  
C 1 µF/50 V  
C6  
R9  
R 50 K1/4 W  
R 50 K1/4 W  
R 0 1/8 W  
C7  
R10  
R11  
R12  
R13  
R14  
R15  
R16  
R18  
R19  
R20  
R21  
R22  
R23  
R24  
R26  
R28  
TX1  
U1  
C8  
C9  
R 47 1/8 W  
R 100 K1/8 W  
R 0 1/4 W  
C10  
C11  
C12  
C13  
C14  
C15  
C16  
C17  
C18  
C19  
C20  
D1  
R 10 K1/8 W  
R 1 1/8 W  
EC 1000 µF/10 V  
EC 470 µF/10 V  
CC 100 pF/50 V  
C 1 nF/50 V  
R 0 1/8 W  
R 100 1/8 W  
R 1 K1/8 W  
R 4.7 K1/8 W  
R 7.5 K1/8 W  
R 120 K1/8 W  
R 15 K1/8 W  
R 10 K1/8 W  
R 0.43 2 W  
800 µH(ERL-28)  
IC FAN6605  
C 470 pF/50 V  
EC 47 µF/50 V  
C 0.01 µF/50 V  
C 0.1 µF/50 V  
FYP1010  
D2  
1N4148  
D3  
FR107  
D4  
FR103  
D5  
U2  
IC PC817  
FYP1010  
ZD1  
F1  
P6KE150A  
U3  
IC TL431  
FUSE 4A/250 V  
VZ 9G  
M1  
L1  
13 mH  
Inductor (2 µH)  
Inductor (2 µH)  
L2  
L3  
© 2014 Fairchild Semiconductor Corporation  
www.fairchildsemi.com  
FAN6605 • Rev. 1.0  
15  
5.00  
4.80  
A
3.81  
3.81  
0.65TYP  
1.75TYP  
6
5
7
B
6.20  
5.80  
4.00  
3.80  
3.85 7.35  
3
2
1
4
PIN #1  
(0.33)  
1.27  
0.25  
C B A  
1.27  
TOP VIEW  
LAND PATTERN RECOMMENDATION  
SEE DETAIL A  
0.25  
0.19  
0.25  
0.10  
C
OPTION A - BEVEL EDGE  
1.75 MAX  
0.10 C  
0.51  
0.33  
FRONT VIEW  
OPTION B - NO BEVEL EDGE  
0.50  
0.25  
ꢂ[ꢂꢃꢄƒ  
NOTES:  
R0.23  
R0.23  
GAGE PLANE  
A) THIS PACKAGE DOES NOT FULLY  
CONFORMS TO JEDEC MS-012,  
VARIATION AA, ISSUE C.  
0.36  
ꢀƒ  
ꢁƒ  
B) ALL DIMENSIONS ARE IN MILLIMETERS.  
C) DIMENSIONS DO NOT INCLUDE MOLD  
FLASH OR BURRS.  
SEATING PLANE  
0.90  
0.406  
(1.04)  
DETAIL A  
D) DRAWING FILENAME : M07Arev4.  
SCALE: 2:1  
ON Semiconductor and  
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.  
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent  
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