EVBUM2652/D
8W Auxiliary Power for
White Goods and Industrial
Equipment with FSL518APG
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EVAL BOARD USER’S MANUAL
Table 1. GENERAL SPECIFICATIONS
Devices
Applications
Input Voltage
Output Power
Topology
Board Size
FSL518APG
White Goods and
Industrial Power
Supplies
90–265 Vac
8W
Isolated Flyback
80 × 38 × 20 mm
2.15 W/inch3
Output Spec.
Turn on Time
Efficiency
Operating
Temperature
Cooling
Standby Power
12 V/0.66 A
< 200 ms
Above 85%
@ Full Load
Open Frame
in Still Air
< 50 mW
@ 230 Vac
0–50°C
Description
This user manual provides elementary information about an isolated
flyback with FSL518APG, it performs high efficiency and smaller
than 50 mW no−load power consumption. FSL518APG is an
integrated pulse width modulation (PWM) and 800 V power switch
with SENSEFET®, it can help to save external MOSFET and sense
resistor, increase power density and reliability. This application is
targeting auxiliary power supply for white goods and industrial
equipment, such as refrigerator, E−metering or similar types of
equipment.
The PWM controller includes an integrated variable frequency
oscillator, Under−Voltage Lockout (UVLO), Leading Edge Blanking
(LEB), optimized gate driver, internal soft−start, and temperature−
compensated precise current source for loop compensation and
self−protection circuitry. This design focuses mainly on the
FSL518APG current−mode PWM controller. Please refer to
FSL518APG’s materials to get more information about this device.
The FSL518APG is a current−mode PWM controller, it can have
better response to handle dynamic operation. Controller combines line
detection and burst−mode adjustment in one pin. It’s easy to achieve
these functionalities just need voltage divider and one Zener diode.
Line detection includes brown−in, brown−out and line OVP,
burst−mode adjustment is for fine tune audible noise and light load
efficiency. Of course, it also provides frequency reduction with
loading decreasing for gaining more design margin to improve light
load efficiency.
© Semiconductor Components Industries, LLC, 2019
July, 2019 − Rev. 1
1
Key Features
• Integrated Rugged 800 V Super Junction
•
•
•
•
•
•
•
•
•
•
MOSFET with SENSEFET Technology
Built−in HV Current Source for Start−up
Peak−Current−Mode Control with Slope
Compensation
Line Compensation for Maximum
Over−Power Limiting
Advanced Soft−start for Low Electrical
Stress
Peak−Current−Mode Control with Built−in
Slope Compensation
Pulse−by−pulse Current Limit
Line Brown−in, Brown−out,
and Over−Voltage Protection (LOVP)
Adjustable Burst−mode Operation
Frequency Hopping for Better EMI
Various Protections:
♦ Auto Restart Mode: Brown−out, OLP,
OVP, AOCP and TSD
♦ Recovery Immediately by Triggering
Level: LOVP
Publication Order Number:
EVBUM2652/D
EVBUM2652/D
DETAIL DEMO−BOARD SCHEMATIC DESCRIPTION
Figure 1. FSL518AFLYGEVB Demo−Board – Main Board Schematic
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2
EVBUM2652/D
The input EMI filter is formed by components L1 and
C1. Bleeder for X−cap, R27 and R28, are left not connected.
The primary side of flyback converter is composed of
these devices; power transformer TX1, dc−link capacitor,
TVS snubber, the integrated switcher U1 (FSL518APG) and
related components. Meanwhile, the integrated switcher has
a peak current mode PWM controller and 800 V super
junction MOSFET. D1, R3 and D8 form TVS snubber to
protect instant voltage spike produced by leakage
inductance. The FB pin of U1 needs to connect to reference
ground due to isolated flyabck already exists regulator as
NCP431A so that don’t need to employ internal error
amplifier. U2 couples the reactive current of U3 to primary
side and connect to COMP pin, the coupled current and
internal sourcing current is converted to control voltage of
PWM for output voltage regulation, R23 and C10 can be
used for adjusting response of feedback signal. LINE pin of
U1 connects voltage divider from bulk capacitor to detect
input voltage for some protections of brown−in, brown−out
and LOVP. Besides, there is parallel−connected D2 on LINE
pin to adjust burst threshold to fine tune audible noise and
light load efficiency. C17 is used to avoid larger switching
noise interference, which is usually recommended around
1 nF~3.3 nF. Auxiliary winding shares same ground
reference with U1. That is, reference ground is negative
terminal of output of bridge rectifier BD1. Transformer
winding is also used for providing VCC voltage in normal
operation. R9 and D3 provide path to delivery energy when
PWM is turned off. C16 can keep enough voltage if PWM
is turned off for a while, and C15 is for better stability.
The secondary−side output is mainly composed of D5,
C6 and C6A. When the MOSFET integrated in the switcher
turns off, energy stored in the coupled inductor is transferred
to the secondary side. At the time, there is switching noise
on the output voltage, which can be, however, reduced by
a LC filter on each output terminal formed by L2 and C7. U3
is a shunt regulator, and output is taken into account for
generating feedback signal with network formed by R19 and
R14. R18, C13, and R11 are used to adjust feedback
response and bias U3. R17 provides additional biasing
current for U3 to keep its required operating current.
Cathode current of U3 is coupled to primary side by an
opto−coupler, U2.
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EVBUM2652/D
CIRCUIT LAYOUT
The PCB consists of a double layer FR4 board with 2 oz. copper cladding.
Figure 2. Main Board Top Layer
Figure 3. Main Board Bottom Layer
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EVBUM2652/D
CIRCUIT LAYOUT (Continued)
Figure 4. Main Board Top Side Components
Figure 5. Main Board Bottom Side Components
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EVBUM2652/D
BOARD PICTURES
Figure 6. Main Board Photo − Top Side
Figure 7. Main Board Photo − Bottom Side
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EVBUM2652/D
TRANSFORMER DATA
Table 2.
Primary−Side Inductance
Pin
Specification
Remark
Drain − B+
745 mH (Typ.)
100 kHz, 1 V
Table 3.
TERMINAL
Isolation Layer
Start Pin
End Pin
WIRE
Turns
Turns
Primary Winding (Np1)
3
2
2UEW 0.22 * 1
36
2
Secondary (Ns1)
9
7
0.55 * 1
11
1
AUX Winding
5
4
2UEW 0.18 * 1
12
1
Secondary (Ns2)
8
6
0.55 * 1
11
1
Copper Shield
4
−
1.2
2
Primary Winding (Np2)
2
1
35
3
Layer
2UEW 0.22 * 1
*Copper shield is open loop and connect to ground.
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EVBUM2652/D
TEST DATA
Figure 8. Operation, Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 9. Operation, Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 10. Zoom in Operation, Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 11. Zoom in Operation, Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 12. Operation, No Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 13. Operation, No Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
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EVBUM2652/D
TEST DATA (Continued)
Figure 14. Ton On time, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Vac, Ch4: Vo)
Figure 15. Ton on time, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Vac, Ch4: Vo)
Figure 16. Output Ripple, Full Load, 115 Vac
(Ch4: VO (AC))
Figure 17. Output Ripple, Full Load, 230 Vac
(Ch4: VO (AC))
Figure 18. Dynamic Operation
(20%~80% of the Full Load, 5 ms Duty Cycle,
2.5 A/ms Rise/Fall Time), 115 Vac
(Ch1: Io, Ch4: Vo(AC))
Figure 19. Dynamic Operation
(20%~80% of the Full Load, 5 ms Duty Cycle,
2.5 A/ms Rise/Fall Time), 230 Vac
(Ch1: Io, Ch4: Vo(AC))
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EVBUM2652/D
TEST DATA (Continued)
Figure 20. Output Short Triggers OLP,
Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 21. Output Short Triggers OLP,
Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 22. Short Photo Couple of Secondary Side
to Trigger VCC OVP, No Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 23. Short Photo Couple of Secondary Side
to Trigger VCC OVP, No Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo
Figure 24. Short Output Schottky Diode to
Trigger AOCP, Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 25. Short Output Schottky Diode to
Trigger AOCP, Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
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EVBUM2652/D
TEST DATA (Continued)
Figure 26. Heating on IC’s Case to Trigger TSD,
Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 27. Heating on IC’s Case to Trigger TSD,
Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 29. Remove Heating from IC’s Case to
Recover TSD Protection, Full Load, 230 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
Figure 28. Remove Heating from IC’s Case to
Recover TSD Protection, Full Load, 115 Vac
(Ch1: VCC, Ch2: COMP, Ch3: Drain, Ch4: Vo)
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EVBUM2652/D
Table 4. BROWN IN/OUT
NOTE:
Behavior
Vin (Vrms)
Brown In
76
Brown Out
65
Test condition is full load.
Gradually increase/decrease input AC by 1 V/step.
Table 5. NO−LOAD INPUT POWER CONSUMPTION
NOTE:
Input Voltage [Vac]
Power Consumption [mW]
115 Vac
24.18
230 Vac
39.50
Test condition: Outputs are connected to electronic load, but loading is not applied. Input power is integrated over three minutes.
Table 6. EFFICIENCY
Input Voltage [Vac]
25% Load
50% Load
75% Load
100% Load
Avg.
115 Vac
86.91%
87.41%
87.46%
87.34%
87.28%
230 Vac
84.01%
85.57%
86.18%
87.25%
85.75%
Figure 30. Board Efficiency
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EVBUM2652/D
Table 7. LINE/LOAD REGULATION
Input Voltage
[Vac]
85 Vac
115 Vac
230 Vac
265 Vac
Line Regulation
(+)
Load
VOUT (V)
VOUT (V)
VOUT (V)
VOUT (V)
VOUT (V)
0W
12.389
12.387
12.386
12.385
0.016%
0.1 W
12.389
12.386
12.385
12.384
0.020%
0.25 W
12.388
12.385
12.384
12.383
0.020%
0.5 W
12.387
12.384
12.382
12.381
0.024%
25 %
12.379
12.378
12.375
12.374
0.020%
50 %
12.372
12.371
12.367
12.366
0.024%
75 %
12.365
12.364
12.360
12.358
0.028%
100 %
12.358
12.356
12.353
12.351
0.028%
Load
Regulation (±)
0.125%
0.125%
0.133%
0.137%
NOTE:
Equation of line/load regulation is ±(max − min) / (max + min).
Measured within load range shown in specification.
Figure 31. Temperature Checking on Bottom
Side, Full Load, 115 Vac
Figure 32. Temperature Checking on Bottom
Side, Full Load, 230 Vac
Figure 33. Temperature Checking on Top Side,
Full Load, 115 Vac
Figure 34. Temperature Checking on Top Side,
Full Load, 230 Vac
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EVBUM2652/D
RBW
Att 10 dB
dBμ V
1 MHz
LIMIT CHECK
100
9 kHz
RBW
MT
MT
1 ms
PREAMP OFF
Att 10 dB
10 MHz
dBμV
PASS
90
1 PK
CLRWR
2 AV
CLRWR
1 MHz
LIMIT CHECK
100
9 kHz
1 ms
PREAMP OFF
10 MHz
PASS
90
1 PK
CLRWR
80
2 AV
CLRWR
TDF
70
EN55022Q
80
TDF
70
EN55022Q
60
60
PRN
EN55022A
PRN
EN55022A
50
50
6DB
6DB
40
40
30
30
20
20
10
10
0
0
150 kHz
Date:
13.SEP.2018
30 MHz
150 kHz
19:05:49
Date:
13.SEP.2018
Figure 35. Conducted EMI, 115 Vac, LINE
RBW
Att 10 dB
dBμ V
9 kHz
RBW
Att 10 dB
dBμV
10 MHz
2 AV
CLRWR
9 kHz
MT
1 ms
PREAMP OFF
1 MHz
LIMIT CHECK
100
PASS
90
1 PK
CLRWR
19:08:09
Figure 36. Conducted EMI, 230 Vac, LINE
MT
1 ms
PREAMP OFF
1 MHz
LIMIT CHECK
100
30 MHz
10 MHz
PASS
90
1 PK
CLRWR
80
2 AV
CLRWR
TDF
70
EN55022Q
80
TDF
70
EN55022Q
60
60
PRN
EN55022A
PRN
EN55022A
50
50
6DB
6DB
40
40
30
30
20
20
10
10
0
0
150 kHz
Date:
13.SEP.2018
30 MHz
150 kHz
19:06:53
Date:
Figure 37. Conducted EMI, 115 Vac, Neutral
13.SEP.2018
30 MHz
19:07:32
Figure 38. Conducted EMI, 230 Vac, Neutral
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EVBUM2652/D
BILL OF MATERIALS
Table 8. BILL OF MATERIALS
Parts
Qty
Description
Value
Tolerance
Footprint
Manufacturer
Manufacturer
Part Number
Substitution
Allowed
Pb−Free
C1
1
X2 Capacitor
0.33 mF/275
V
±10%
17 × 7.5 ×
15.5 mm
Pitch = 15 m
m
CARLI
PX334K3ID1
Yes
Yes
C10, C17
2
MLCC X7R
Capacitor
102 pF/50 V
±10%
0805
Taiwan−Resister
CP102K050XRB
Yes
Yes
C13
1
MLCC X7R
Capacitor
682 pF/50 V
±10%
0805
Taiwan−Resister
CP682K050XRB
Yes
Yes
C15
1
MLCC X7R
Capacitor
104 pF/50 V
±10%
0805
Taiwan−Resister
CP104K050XRB
Yes
Yes
C1
1
X2 Capacitor
0.22 mF/
275 V
±10%
P = 10 mm
CARLI
PX224K3IC5
Yes
Yes
C2
1
MLCC X7R
Capacitor
102 pF/1 kV
±10%
1206
KEMET
C1206C102KDRACTU
Yes
Yes
C14
1
Y1 Capacitor
222 pF/250 V
±20%
UNIVERSE
CD12−E2GA222MYASA
Yes
Yes
C4
1
Electrolytic
Capacitor
18 mF/400 V
10 × 20 mm
AISHI
EHL2GM180G20OT
Yes
Yes
C6, C6A
2
Electrolytic
Capacitor
470 mF/25 V
10 × 12 mm
CHEMI−CON
EKMG250ELL471MJC5S
Yes
Yes
C7
1
Electrolytic
Capacitor
68 mF/25 V
±20%
5 × 11 mm
Rubycon
25ZLH68M5X11
Yes
Yes
C16
1
Electrolytic
Capacitor
22 mF/50 V
±20%
5 × 11 mm
JACKCON
LHK
Yes
Yes
R14
1
Resistor SMD
47.5 kW
±5%
0805
Taiwan−Resister
RP0847K5JR
Yes
Yes
R11, R17
1
Resistor SMD
5.1 kW
±5%
1206
Taiwan−Resister
RP1205K1JR
Yes
Yes
R18
1
Resistor SMD
1 MW
±5%
0805
Taiwan−Resister
RP0801MJR
Yes
Yes
R19
1
Resistor SMD
180 kW
±1%
0805
Taiwan−Resister
RP08180KFR
Yes
Yes
R23
1
Resistor SMD
100 kW
±5%
0805
Taiwan−Resister
RP08100KJR
Yes
Yes
R1, R2, R8
3
Resistor SMD
200 kW
±5%
1206
Taiwan−Resister
RP12200KJR
Yes
Yes
R9
1
Resistor SMD
1R
±5%
1206
Taiwan−Resister
RP1201R0JR
Yes
Yes
R3, R21
1
Resistor SMD
0R
±5%
1206
Taiwan−Resister
RP12000JR
Yes
Yes
R22
1
Resistor SMD
22 MW
±5%
1206
Taiwan−Resister
RP1222M0JR
Yes
Yes
D1
1
Fast Rectifier
600 V, 1 A
DO−214AC
ON Semiconductor
ES1J
Yes
Yes
D2
1
Zener Diode
7.5 V, 0.2 W
SOD−523F
ON Semiconductor
MM5Z7V5
Yes
Yes
D3
1
Fast Rectifier
200 V, 1 A
DO−214AC
ON Semiconductor
RS1D
Yes
Yes
D4
1
Jumper Wire
Short
5 mm
Yes
Yes
D5
1
Schottky
Rectifier
120 V, 10 A
TO−277
ON Semiconductor
FSV10120V
Yes
Yes
L, N, 12V,
GND
4
TEST PIN
Pin Y2.2 ×
18.2 mm
OEM−10
2.2 ×
18.2 mm
KANG YANG
SG004−05 Pin
Yes
Yes
F1
1
Fuse
FUSE
CERAMIC
1 A/250 V
SLOW
3.6 × 10 mm
37SG
Yes
Yes
MOV
1
MOV
470 V
THINKING
MOV−471KD10SBNL
Yes
Yes
NTC
1
Jumper Wire
short
7 mm
Yes
Yes
L1
1
Common−
mode Choke
30 mH
UU9.8
SEN HUEI
TRN0330
Yes
Yes
L2
1
Inductor,
Ferrite Core
1 mH
DR 6 × 8
WURTH
744772010
Yes
Yes
BD1
1
Bridge
Rectifier
600 V, 1.5 A
SDIP−4
ON Semiconductor
DF06S
Yes
Yes
TX1
1
Transformer
745 mH
EE−19H−9P
SEN HUEI
SWARM BOBBIN
TRN0369
SW−19AG
No
Yes
±10%
±5%
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EVBUM2652/D
Table 8. BILL OF MATERIALS (continued)
Parts
Qty
Description
U1
1
PWM with
Power
SENSEFET
U2
1
Opto Coupler
CTR =
80−160%
U3
1
Shunt
Regulator
Adjustable,
2.5 V
NTC, D4, F1
1
PCB
3
Teflon Tube
Value
Tolerance
1%
Footprint
Manufacturer
Manufacturer
Part Number
Substitution
Allowed
Pb−Free
PDIP−7
ON Semiconductor
FSL518APG
No
Yes
DIP 4−pin
ON Semiconductor
FOD817A
Yes
Yes
TO−92
ON Semiconductor
NCP431AVLPRAG
Yes
Yes
No
Yes
Yes
Yes
38 × 80 mm
17L × 305 m
PLM0433V0
SENSEFET is a registered trademark of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other
countries.
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The evaluation board/kit (research and development board/kit) (hereinafter the “board”) is not a finished product and is as such not available for sale to consumers. The board is only intended
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