FSDM07652REWDTU [ONSEMI]

用于 70 W 离线反激式转换器的 650 V 集成电源开关;
FSDM07652REWDTU
型号: FSDM07652REWDTU
厂家: ONSEMI    ONSEMI
描述:

用于 70 W 离线反激式转换器的 650 V 集成电源开关

局域网 开关 电源开关 转换器
文件: 总21页 (文件大小:693K)
中文:  中文翻译
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FSDM0465RE, FSDM0565RE, FSDM07652RE  
Green Mode Power Switch  
Features  
Description  
„ Internal Avalanche-Rugged SenseFET  
The FSDM0465RE, FSDM0565RE and FSDM07652RE  
are an integrated Pulse Width Modulator (PWM) and  
SenseFET specifically designed for high-performance  
offline Switch Mode Power Supplies (SMPS) with  
minimal external components. This device is an  
integrated high-voltage power-switching regulator that  
„ Advanced Burst-Mode Operation Consumes Under  
1W at 240VAC & 0.5W load  
„ Precision Fixed Operating Frequency (66kHz)  
„ Internal Start-up Circuit  
„ Improved Pulse-by-Pulse Current Limiting  
„ Over-Voltage Protection (OVP)  
„ Overload Protection (OLP)  
combines an avalanche-rugged SenseFET with  
a
current mode PWM control block. The PWM controller  
includes an integrated fixed-frequency oscillator, under-  
voltage lockout, leading-edge blanking (LEB), optimized  
gate driver, internal soft-start, temperature-compensated  
precise-current sources for a loop compensation, and  
„ Internal Thermal Shutdown Function (TSD)  
„ Auto-Restart Mode  
„ Under-Voltage Lockout (UVLO) with hysteresis  
„ Low Operating Current (2.5mA)  
„ Built-in Soft-Start  
self-protection circuitry. Compared with  
a discrete  
MOSFET and PWM controller solution, it can reduce total  
cost; component count, size, and weight; while  
simultaneously increasing efficiency, productivity, and  
system reliability. This device is a basic platform well  
suited for cost-effective designs of flyback converters.  
Applications  
„ SMPS for LCD monitor and STB  
„ Adaptor  
Ordering Information  
Product Number  
FSDM0465REWDTU(1)  
FSDM0565REWDTU  
FSDM07652REWDTU  
Package  
Marking Code  
DM0465RE  
BVDSS  
650V  
RDS(ON) Max.  
2.6 Ω  
TO-220F-6L (Forming)  
TO-220F-6L (Forming)  
TO-220F-6L (Forming)  
DM0565RE  
650V  
2.2 Ω  
DM07652RE  
650V  
1.6 Ω  
Note:  
1. WDTU: Forming Type.  
All packages are lead free per JEDEC: J-STD-020B standard.  
© 2006 Semiconductor Components Industries, LLC.  
October-2017, Rev. 2  
Publication Order Number:  
FSDM0465RE/D  
Typical Circuit  
AC  
IN  
DC  
OUT  
Vstr  
Drain  
PWM  
VCC  
FB  
Source  
FSDM0565RE Rev: 00  
Figure 1. Typical Flyback Application  
Output Power Table  
230VAC ±15%(4)  
85–265VAC  
Product  
Adapter(2)  
Open Frame(3)  
Adapter(2)  
Open Frame(3)  
FSDM0465RE  
FSDM0565RE  
FSDM07652RE  
48W  
56W  
70W  
80W  
40W  
50W  
60W  
48W  
60W  
70W  
60W  
70W  
Notes:  
2. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient.  
3. Maximum practical continuous power in an open-frame design at 50°C ambient.  
4. 230VAC or 100/115VAC with doubler.  
www.onsemi.com  
2
Internal Block Diagram  
VCC  
3
Vstr  
6
Drain  
1
NC 5  
Istart  
0.5/0.7V  
+
Internal  
Bias  
Vref  
8V/12V  
2.5R  
VCC good  
-
Vref  
VCC  
Idelay  
OSC  
IFB  
PWM  
R
S
R
Q
Q
FB 4  
Gate  
driver  
Soft-start  
LEB  
VSD  
VCC  
2 GND  
S
R
Q
Vovp  
TSD  
Q
VCC good  
VCL  
FSDM0565RE Rev: 00  
Figure 2. Functional Block Diagram of FSDM0x65RE  
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3
Pin Configuration  
TO-220F-6L  
6. Vstr  
5. NC  
4. FB  
3. VCC  
2. GND  
1. Drain  
Figure 3. Pin Configuration (Top View)  
Pin Definitions  
Pin #  
Name  
Description  
SenseFET drain. This pin is the high-voltage power SenseFET drain. It is de-  
signed to drive the transformer directly.  
1
2
Drain  
GND  
Ground. This pin is the control ground and the SenseFET source.  
Power Supply. This pin is the positive supply voltage input. During start-up,  
the power is supplied by an internal high-voltage current source connected to  
the Vstr pin. When VCC reaches 12V, the internal high-voltage current source  
is disabled and the power is supplied from the auxiliary transformer winding.  
3
VCC  
Feedback. This pin is internally connected to the inverting input of the PWM  
comparator. The collector of an opto-coupler is typically tied to this pin. For  
stable operation, a capacitor should be placed between this pin and GND. If  
the voltage of this pin reaches 6.0V, the overload protection is activated,  
re-sulting in shutdown of the Power Switch.  
4
FB  
5
6
NC  
Vstr  
No Connection.  
Start-up. This pin is connected directly to the high-voltage DC link. At start-up,  
the internal high-voltage current source supplies internal bias and charges the  
external capacitor connected to the VCC pin. Once VCC reaches 12V, the in-  
ternal current source is disabled.  
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4
Absolute Maximum Ratings  
The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The  
device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables  
are not guaranteed at the absolute maximum ratings. TA = 25°C, unless otherwise specified.  
Symbol  
BVDSS  
Vstr  
Parameter  
Drain Source Breakdown Voltage  
Max. Voltage at Vstart pin  
Value  
650  
650  
9.6  
11  
Unit  
V
V
FSDM0465RE  
TC=25°C  
TC=25°C  
IDM  
Drain Current Pulsed(5)  
FSDM0565RE  
FSDM07652RE  
ADC  
TC=25°C  
15  
TC=25°C  
2.2  
1.4  
2.8  
1.7  
3.8  
2.4  
FSDM0465RE  
TC=100°C  
TC=25°C  
ID  
Continuous Drain Current FSDM0565RE  
FSDM07652RE  
A
TC=100°C  
TC=25°C  
TC=100°C  
FSDM0465RE  
FSDM0565RE  
FSDM07652RE  
EAS  
Single Pulsed Avalanche Energy(6)  
190  
370  
mJ  
VCC  
VFB  
Supply Voltage  
20  
V
V
Input Voltage Range  
-0.3 to VCC  
45  
PD(Watt H/S) Total Power Dissipation (TC=25°C)  
W
°C  
°C  
°C  
TJ  
TA  
Operating Junction Temperature  
Operating Ambient Temperature  
Storage Temperature  
Internally limited  
-25 to +85  
-55 to +150  
TSTG  
ESD Capability, HBM Model  
(All pins except Vstr and FB)  
2.0  
kV  
V
(GND-Vstr/VFB=1.5kV)  
ESD Capability, Machine Model  
(All pins except Vstr and FB)  
300  
(GND-Vstr/VFB=225V)  
Notes:  
5. Repetitive rating: Pulse width limited by maximum junction temperature.  
6. L=14mH, starting TJ=25°C.  
Thermal Impedance  
TA=25°C, unless otherwise specified.  
Symbol  
Parameter  
Junction-to-Ambient Thermal Resistance  
Junction-to-Case Thermal Resistance  
Value  
49.90  
2.78  
Unit  
°C/W  
°C/W  
(7)  
θJA  
(8)  
θJC  
Notes:  
7. Free-standing, with no heat-sink, under natural convection.  
8. Infinite cooling condition - refer to the SEMI G30-88.  
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5
Electrical Characteristics  
TA = 25°C unless otherwise specified.  
Symbol  
Parameter  
Condition  
Min. Typ. Max. Unit  
SenseFET SECTION  
VDS = 650V, VGS = 0V  
250  
250  
FSDM0465RE  
VDS = 520V, VGS = 0V, TC = 125°C  
VDS = 650V, VGS = 0V  
500  
µA  
Zero Gate Voltage  
Drain Current  
IDSS  
FSDM0565RE  
VDS = 520V, VGS = 0V, TC = 125°C  
VDS = 650V, VGS = 0V  
500  
500  
500  
FSDM07652RE  
FSDM0465RE  
VDS = 520V, VGS = 0V, TC = 125°C  
2.20 2.60  
Static Drain Source  
on Resistance(9)  
RDS(ON)  
COSS  
td(on)  
tr  
FSDM0565RE VGS = 10V, ID = 2.5A  
FSDM07652RE  
1.76 2.20  
Ω
pF  
ns  
ns  
ns  
ns  
1.40 1.60  
FSDM0465RE  
60  
78  
100  
23  
22  
22  
20  
52  
60  
65  
95  
115  
27  
50  
65  
Output Capacitance FSDM0565RE VGS = 0V, VDS = 25V, f = 1MHz  
FSDM07652RE  
FSDM0465RE  
Turn-On Delay Time FSDM0565RE VDD = 325V, ID = 5A  
FSDM07652RE  
FSDM0465RE  
Rise Time  
FSDM0565RE VDD = 325V, ID = 5A  
FSDM07652RE  
FSDM0465RE  
td(off)  
Turn-Off Delay Time FSDM0565RE VDD = 325V, ID = 5A  
FSDM07652RE  
FSDM0465RE  
tf  
Fall Time  
FSDM0565RE VDD = 325V, ID = 5A  
FSDM07652RE  
CONTROL SECTION  
fOSC Switching Frequency  
ΔfSTABLE Switching Frequency Stability  
VFB = 3V  
60  
0
66  
1
72  
3
kHz  
%
13V VCC 18V  
-25°C TA 85°C  
VFB = GND  
ΔfOSC  
Switching Frequency Variation(10)  
0
±5  
0.9  
82  
82  
80  
±10  
1.1  
87  
87  
85  
0
%
IFB  
Feedback Source Current  
0.7  
77  
77  
75  
mA  
%
FSDM0465RE  
DMAX  
Maximum Duty Cycle FSDM0565RE  
FSDM07652RE  
%
%
DMIN  
VSTART  
VSTOP  
tS/S  
Minimum Duty Cycle  
%
VFB = GND  
11  
7
12  
8
13  
9
V
UVLO Threshold Voltage  
Internal Soft-Start Time  
VFB = GND  
VFB = 3  
V
10  
15  
ms  
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6
Electrical Characteristics (Continued)  
TA = 25°C unless otherwise specified.  
Symbol  
Parameter  
Condition  
Min. Typ. Max. Unit  
BURST MODE SECTION  
VBURH  
VCC = 14V  
0.7  
0.5  
V
V
Burst Mode Voltages  
VBURL  
VCC = 14V  
PROTECTION SECTION  
VSD  
IDELAY  
tLEB  
Shutdown Feedback Voltage  
Shutdown Delay Current  
VFB 5.5V  
5.5  
2.8  
6.0  
3.5  
6.5  
4.2  
V
VFB = 5V  
µA  
ns  
Leading-Edge Blanking Time  
250  
FSDM0465RE VFB = 5V, VCC = 14V  
FSDM0565RE VFB = 5V, VCC = 14V  
FSDM07652RE VFB = 5V, VCC = 14V  
1.60 1.80 2.00  
2.00 2.25 2.50  
2.20 2.50 2.70  
ILIMIT  
Peak Current Limit(11)  
A
VOVP  
TSD  
Over-Voltage Protection  
Thermal Shutdown Temperature(10)  
18  
19  
20  
V
130 145 160  
°C  
TOTAL DEVICE SECTION  
IOP  
VFB = GND, VCC = 14V  
VFB = GND, VCC = 10V  
VFB = GND, VCC = 18V  
IOP(MIN)  
IOP(MAX)  
Notes:  
9. Pulse test: Pulse width 300µS, duty cycle 2%.  
Operating Supply Current(12)  
2.5  
5.0  
mA  
10. These parameters, although guaranteed at the design, are not tested in production.  
11. These parameters indicate the inductor current.  
12. This parameter is the current flowing into the control IC.  
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7
Comparison Between FS6M0765RTC and FSDM0x65RE  
Function  
FS6M0765RTC  
FSDM0x65RE  
FSDM0x65RE Advantages  
„ Gradually increasing current limit during  
soft-start reduces peak current and volt-  
age component stresses  
Adjustable soft-start  
time using an external typically 10ms (fixed)  
capacitor  
Internal soft-start with  
Soft-Start  
„ Eliminates external soft-start components  
in most applications  
„ Reduces or eliminates output overshoot  
„ Built into controller „ Built into controller „ Improves light-load efficiency  
Burst-Mode Operation  
„ Output voltage  
„ Output voltage fixed „ Reduces no-load consumption  
drops to around half  
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8
Typical Performance Characteristics  
These characteristic graphs are normalized at TA= 25°C.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100 125  
150  
-25  
0
25  
50  
75  
100  
125  
150  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 4. Operating Current vs. Temp.  
Figure 5. Start Threshold Voltage vs. Temp.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100  
125  
150  
-25  
0
25  
50  
75  
100  
125  
150  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 6. Stop Threshold Voltage vs. Temp.  
Figure 7. Operating Frequency vs. Temp.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100  
125  
150  
-25  
0
25  
50  
75  
100  
125  
150  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 8. Maximum Duty Cycle vs. Temp.  
Figure 9. Feedback Source Current vs. Temp.  
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9
Typical Performance Characteristics (Continued)  
These characteristic graphs are normalized at TA= 25°C.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100  
125  
150  
-25  
0
25  
50  
75  
100  
125  
150  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 10. Shutdown Feedback Voltage vs. Temp.  
Figure 11. Shutdown Delay Current vs. Temp.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100  
125  
150  
-25  
0
25  
50  
75  
100 125  
150  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 12. Over-Voltage Protection vs. Temp.  
Figure 13. Burst-Mode Enable Voltage vs. Temp.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-25  
0
25  
50  
75  
100 125  
150  
-50  
-25  
0
25  
50  
75  
100 125  
Junction Temperature [°C]  
Junction Temperature [°C]  
Figure 14. Burst-Mode Disable Voltage vs. Temp.  
Figure 15. Current Limit vs. Temp.  
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10  
Typical Performance Characteristics (Continued)  
These characteristic graphs are normalized at TA= 25°C.  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
-50  
-25  
0
25  
50  
75  
100  
125  
Junction Temperature [°C]  
Figure 16. Soft-Start Time vs. Temp.  
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11  
2.1 Pulse-by-Pulse Current Limit: Because current-  
mode control is employed, the peak current through the  
SenseFET is limited by the inverting input of PWM  
comparator (VFB*) as shown in Figure 18. Assuming that  
Functional Description  
1.  
Start-up:  
In  
previous  
generations  
of  
Power Switches the VCC pin had an external start-  
up resistor to the DC input voltage line. In this  
generation, the start-up resistor is replaced by an  
internal high-voltage current source. At start-up, the  
internal high-voltage current source supplies the  
internal bias and charges the external capacitor  
the 0.9mA current source flows only through the internal  
resistor (2.5R + R = 2.8kΩ), the cathode voltage of diode  
D2 is about 2.5V. Since D1 is blocked when the feedback  
voltage (VFB) exceeds 2.5V, the maximum voltage of the  
cathode of D2 is clamped at this voltage, thus clamping  
(Cvcc  
)
connected to the VCC pin, as illustrated  
VFB*. Therefore, the peak value of the current through  
in Figure 17. When VCC reaches 12V, the  
FSDM0x65RE begins switching and the internal high-  
the SenseFET is limited.  
voltage  
current  
source  
is  
disabled.  
The  
2.2 Leading Edge Blanking (LEB): At the instant the  
internal SenseFET is turned on, a high-current spike  
occurs through the SenseFET, caused by primary-side  
capacitance and secondary-side rectifier reverse  
recovery. Excessive voltage across the Rsense resistor  
FSDM0x65RE continues normal switching operation and  
the power is supplied from the auxiliary transformer  
winding unless VCC goes below the stop voltage of 8V.  
would lead to incorrect feedback operation in the current  
mode PWM control. To counter this effect, the  
FSDM0x65RE employs a leading-edge blanking (LEB)  
circuit. This circuit inhibits the PWM comparator for a  
short time (tLEB) after the SenseFET is turned on.  
VDC  
CVcc  
Vref  
VCC  
Idelay  
IFB  
VCC  
Vstr  
VFB  
VO  
SenseFET  
3
6
OSC  
4
H11A817A  
D1  
D2  
CB  
2.5R  
R
Istart  
+
Vfb  
Gate  
driver  
*
Vref  
KA431  
-
8V/12V  
VCC good  
OLP  
Rsense  
Internal  
Bias  
VSD  
FSDM0565RE Rev: 00  
FSDM0565RE Rev: 00  
Figure 18. Pulse-Width-Modulation (PWM) Circuit  
Figure 17. Internal Start-up Circuit  
3. Protection Circuit: The FSDM0x65RE has several  
self-protective functions, such as overload protection  
(OLP), over-voltage protection (OVP), and thermal  
shutdown (TSD). Because these protection circuits are  
fully integrated into the IC without external components,  
the reliability is improved without increasing cost. Once a  
fault condition occurs, switching is terminated and the  
SenseFET remains off, which causes VCC to fall. When  
2. Feedback Control: FSDM0x65RE employs current-  
mode control, as shown in Figure 18. An opto-coupler  
(such as the H11A817A) and shunt regulator (such as  
the KA431) are typically used to implement the feedback  
network. Comparing the feedback voltage with the  
voltage across the Rsense resistor, plus an offset voltage,  
makes it possible to control the switching duty cycle.  
When the reference pin voltage of the shunt regulator  
exceeds the internal reference voltage of 2.5V, the opto-  
coupler LED current increases, pulling down the  
feedback voltage and reducing the duty cycle. This event  
typically occurs when the input voltage is increased or  
the output load is decreased.  
VCC reaches the UVLO stop voltage of 8V, the protection  
is reset and the internal high-voltage current source  
charges the VCC capacitor via the Vstr pin. When VCC  
reaches the UVLO start voltage of 12V, the  
FSDM0x65RE resumes normal operation. In this  
manner, the auto-restart can alternately enable and  
disable the switching of the power SenseFET until the  
fault condition is eliminated (see Figure 19).  
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12  
Fault  
occurs  
FSDM0565RE Rev: 00  
VFB  
Fault  
Power  
on  
VDS  
removed  
Overload protection  
6.0V  
2.5V  
VCC  
T12= CFB*(6.0-2.5)/Idelay  
12V  
8V  
T1  
T2  
t
Figure 20. Overload Protection  
t
Normal  
operation  
Fault  
situation  
Normal  
operation  
3.2 Over-Voltage Protection (OVP): If the secondary  
side feedback circuit were to malfunction or a solder  
defect caused an opening in the feedback path, the  
current through the opto-coupler transistor becomes  
almost zero. In this event, VFB climbs in a similar manner  
FSDM0565RE Rev: 00  
Figure 19. Auto Restart Operation  
to the overload situation, forcing the preset maximum  
current to be supplied to the SMPS until the overload  
protection is activated. Because more energy than  
required is provided to the output, the output voltage may  
exceed the rated voltage before the overload protection  
is activated, resulting in the breakdown of the devices in  
the secondary side. To prevent this situation, an over-  
voltage protection (OVP) circuit is employed. In general,  
VCC is proportional to the output voltage and the  
3.1 Overload Protection (OLP): Overload is defined as  
the load current exceeding a pre-set level due to an  
unexpected event. In this situation, the protection circuit  
should be activated to protect the SMPS. Even when the  
SMPS is in normal operation, the overload protection  
circuit can be activated during the load transition. To  
avoid this undesired operation, the overload protection  
circuit is designed to be activated after a specified time  
to determine whether it is a transient situation or a true  
overload situation. Because of the pulse-by-pulse  
current limit capability, the maximum peak current  
through the SenseFET is limited, and therefore the  
maximum input power is restricted with a given input  
voltage. If the output consumes beyond this maximum  
power, the output voltage (VO) decreases below the set  
FSDM0x65RE uses VCC instead of directly monitoring  
the output voltage. If VCC exceeds 19V, an OVP circuit is  
activated, resulting in the termination of the switching  
operation. To avoid undesired activation of OVP during  
normal operation, VCC should be designed below 19V.  
3.3 Thermal Shutdown (TSD): The SenseFET and the  
control IC are built in one package. This makes it easy  
for the control IC to detect the heat generation from the  
SenseFET. When the temperature exceeds ~150°C, the  
thermal shutdown is activated.  
voltage. This reduces the current through the opto-  
coupler LED, which also reduces the opto-coupler  
transistor current, thus increasing the feedback voltage  
(VFB). If VFB exceeds 2.5V, D1 is blocked and the 3.5µA  
current source starts to charge CB slowly up to VCC. In  
this condition, VFB continues increasing until it reaches  
4. Soft-Start: The FSDM0x65RE has an internal soft-  
start circuit that increases PWM comparator inverting  
input voltage, together with the SenseFET current,  
slowly after it starts up. The typical soft-start time is  
10ms. The pulse width to the power switching device is  
progressively increased to establish the correct working  
conditions for transformers, inductors, and capacitors.  
The voltage on the output capacitors is progressively  
increased with the intention of smoothly establishing the  
required output voltage. It also helps prevent transformer  
saturation and reduces the stress on the secondary  
diode during start-up.  
6V, when the switching operation is terminated, as  
shown in Figure 20. The delay time for shutdown is the  
time required to charge CB from 2.5V to 6.0V with 3.5µA.  
A 10 ~ 50ms delay time is typical for most applications.  
www.onsemi.com  
13  
5. Burst Operation: To minimize power dissipation in  
standby mode, the FSDM0x65RE enters burst-mode  
operation. As the load decreases, the feedback voltage  
decreases. As shown in Figure 21, the device  
automatically enters burst mode when the feedback  
voltage drops below V  
(500mV). At this point,  
BURL  
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 V  
(700mV),  
BURH  
switching resumes. The feedback voltage then falls and  
the process repeats. Burst-mode operation alternately  
enables and disables switching of the power SenseFET,  
thereby reducing switching loss in standby mode.  
Vo  
set  
VO  
VFB  
0.7V  
0.5V  
IDS  
VDS  
time  
Switching  
disabled  
Switching  
disabled  
T4  
T2 T3  
T1  
FSDM0565RE Rev: 00  
Figure 21. Waveforms of Burst Operation  
www.onsemi.com  
14  
Application Information  
Application  
Output Power  
40W  
Input Voltage  
Output Voltage (Max. Current)  
Universal input  
5V (2.0A)  
12V (2.5A)  
LCD Monitor  
(85-265V  
)
AC  
Features  
„ High efficiency (>81% at 85V input)  
AC  
„ Low zero load power consumption (<300mW at 240V input)  
AC  
„ Low standby mode power consumption (<800mW at 240V input and 0.3W load)  
AC  
„ Low component count  
„ Enhanced system reliability through various protection functions  
„ Internal soft-start (10ms)  
Key Design Notes  
„ Resistors R102 and R105 are employed to prevent start-up at low input voltage. After start-up, there is no power  
loss in these resistors since the start-up pin is internally disconnected after start-up.  
„ The delay time for overload protection is designed to be about 50ms with C106 of 47nF. If a faster triggering of OLP  
is required, C106 can be reduced to 10nF.  
„ Zener diode ZD102 is used for a safety test, such as UL. When the drain pin and feedback pin are shorted, the  
zener diode fails and remains short, which causes the fuse (F1) to be blown and prevents explosion of the opto-cou-  
pler (IC301). This zener diode also increases the immunity against line surge.  
1. Schematic  
D202  
MBRF10100  
T1  
EER3016  
L201  
12V, 2.5A  
10  
1
2
C202  
1000μF  
25V  
C201  
1000μF  
25V  
C104  
2.2nF  
1kV  
R103  
56kΩ  
2W  
8
R102  
D101  
30kΩ  
C103  
100μF  
400V  
UF 4007  
3
R105  
40kΩ  
BD101  
2
IC1  
FSDM0565RE  
2KBP06M3N257  
6
Vstr  
1
1
3
3
Drain  
VCC  
5
4
D201  
MBRF1045  
L202  
NC  
FB  
5V, 2A  
4
7
4
ZD102  
10V  
D102  
UF4004  
R104  
5Ω  
C204  
1000μF  
10V  
GND  
2
C105  
22μF  
C203  
1000μF  
10V  
6
C106  
47nF  
50V  
C102  
220nF  
275VAC  
ZD101  
22V  
50V  
5
C301  
4.7nF  
LF101  
23mH  
R201  
1kΩ  
R101  
560kΩ  
1W  
R204  
5.6kΩ  
R202  
1.2kΩ  
R203  
12kΩ  
C205  
47nF  
IC301  
H11A817A  
IC201  
KA431  
F1  
C101  
220nF  
275VAC  
RT1  
5D-9  
FUSE  
250V  
2A  
R205  
5.6kΩ  
FSDM0565RE Rev: 00  
Figure 22. Demo Circuit  
www.onsemi.com  
15  
2. Transformer  
EER3016  
1
10  
9
Np/2  
Np/2  
N12V  
2
3
4
5
8
7
N5V  
6
Na  
FSDM0565RE Rev: 00  
Figure 23. Transformer Schematic Diagram  
3. Winding Specification  
No  
Pin (sf)  
4 5  
Wire  
0.2φ × 1  
Turns  
Winding Method  
N
8
Center Winding  
a
Insulation: Polyester Tape t = 0.050mm, 2 Layers  
N /2 2 1  
0.4φ × 1  
Insulation: Polyester Tape t = 0.050mm, 2 Layers  
10 8  
0.3φ × 3  
Insulation: Polyester Tape t = 0.050mm, 2 Layers  
7 6  
0.3φ × 3  
Insulation: Polyester Tape t = 0.050mm, 2 Layers  
N /2 3 2  
0.4φ × 1  
18  
7
Solenoid Winding  
Center Winding  
Center Winding  
Solenoid Winding  
p
N
12V  
N
3
5V  
18  
p
Outer Insulation: Polyester Tape t = 0.050mm, 2 Layers  
4. Electrical Characteristics  
Pin  
Specification  
520µH ± 10%  
10µH Max  
Remarks  
Inductance  
1 - 3  
1 - 3  
100kHz, 1V  
nd  
Leakage Inductance  
2
all short  
5. Core & Bobbin  
„ Core: EER 3016  
„ Bobbin: EER3016  
„ Ae(mm2): 96  
www.onsemi.com  
16  
6. Demo Circuit Part List  
Part  
Value  
Note  
Part  
D102  
D201  
D202  
ZD101  
ZD102  
Value  
Note  
Fuse  
NTC  
UF4004  
F101  
2A/250V  
MBRF1045  
MBRF10100  
Zener Diode  
Zener Diode  
22V  
10V  
RT101  
5D-9  
Resistor  
Bridge Diode  
BD101 2KBP06M 3N257  
R101  
R102  
R103  
R104  
R105  
R201  
R202  
R203  
R204  
R205  
560kΩ  
30kΩ  
56kΩ  
5Ω  
1W  
Bridge Diode  
Wire 0.4mm  
1/4W  
2W  
Line Filter  
1/4W  
1/4W  
1/4W  
1/4W  
1/4W  
1/4W  
1/4W  
LF101  
23mH  
40kΩ  
1kΩ  
IC  
Power Switch (5A,650V)  
Voltage reference  
Opto-coupler  
1.2kΩ  
12kΩ  
5.6kΩ  
5.6kΩ  
IC101  
IC201  
IC301  
FSDM0565RE  
KA431 (TL431)  
H11A817A  
Capacitor  
C101  
C102  
C103  
C104  
C105  
C106  
C201  
C202  
C203  
C204  
C205  
C301  
220nF/275V  
Box Capacitor  
AC  
AC  
220nF/275V  
Box Capacitor  
100µF/400V  
2.2nF/1kV  
22µF/50V  
47nF/50V  
1000µF/25V  
1000µF/25V  
1000µF/10V  
1000µF/10V  
47nF/50V  
4.7nF  
Electrolytic Capacitor  
Ceramic Capacitor  
Electrolytic Capacitor  
Ceramic Capacitor  
Electrolytic Capacitor  
Electrolytic Capacitor  
Electrolytic Capacitor  
Electrolytic Capacitor  
Ceramic Capacitor  
Polyester Film Cap.  
Inductor  
L201  
L202  
5µH  
5µH  
Wire 1.2mm  
Wire 1.2mm  
Diode  
D101  
UF4007  
www.onsemi.com  
17  
7. Layout  
Figure 24. Layout Considerations for FSDM0565RE (Top View)  
Figure 25. Layout Considerations for FSDM0565RE (Bottom View)  
www.onsemi.com  
18  
Package Dimensions  
Figure 26. TO-220F-6L (Forming)  
www.onsemi.com  
19  
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  
coverage may be accessed at www.onsemi.com/site/pdf/PatentMarking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.  
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability  
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