FSL518H, FSL538H,
FSL518A, FSL538A
High Performance Switcher
Integrated with HV Startup
and SENSEFET
)
The FSL5x8 is an integrated peak-current-mode controlled pulse
width modulation (PWM) power switch, specifically designed for
off-line switch-mode power supplies. The PWM controller includes an
advanced soft-start, frequency hopping, optimized gate driver, internal
transconductance amplifier, temperature-compensated precise current
source for loop compensation and enhanced self-protections as well.
Compared to a discrete MOSFET and PWM controller solution, the
FSL5x8 allows to reduce total cost, component count, size, and
weight, while simultaneously increasing efficiency, productivity, and
system reliability. This device provides a basic platform for
cost-effective design of both isolated and non-isolated Flyback
converters.
Features
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PDIP−7
CASE 626A
MARKING DIAGRAM
ON
AYWWL
L5x8y
•
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
AC Line Compensation for Accurate Over Power Protection
Advanced Soft-start for Low Electrical Stress
Pulse-by-pulse Current Limit
FSL5x8A: 100 kHz and FSL5x8H: 130 kHz
Line Brown-in, Brown-out Function
Line Over-voltage Protection (LOVP)
Adjustable Burst−mode Operation
Frequency Hopping for Low EMI
All Protections are Auto-Recovery: Brown-out, OLP, OVP, AOCP
and TSD
These Devices are Pb-Free, Halogen Free/BFR Free and RoHS
Compliant
A
Y
W
WL
L5x8
x
y
= Plant Code
= 1−digit Year Code
= 1−digit Week Code
= 2−digit Die−Run Code
= Specific Device Code
= Device Option (1 or 3)
= Frequency Option (A or H)
PIN CONNECTIONS
GND 1
VCC 2
FB 3
COMP 4
5 LINE
8 DRAIN
7 DRAIN
Typical Applications
•
Power Supplies for White Goods
•
Industrial Auxiliary Power Supply, E-metering SMPS
•
Consumer Electronics (Chargers, Set-top-boxes and TVs)
ORDERING INFORMATION
See detailed ordering and shipping information on page 25 of
this data sheet.
©
Semiconductor Components Industries, LLC, 2018
July, 2019
−
Rev. 2
1
Publication Order Number:
FSL538HR/D
FSL518H, FSL538H, FSL518A, FSL538A
PRODUCT INFORMATION & INDICATIVE RECOMMENDED OUTPUT POWER
Part
Number
FSL518H
FSL538H
FSL518A
FSL538A
Operating
Junction
Temperature
−40
~ 125°C
−40
~ 125°C
−40
~ 125°C
−40
~ 125°C
Output Power Table (Open Frame)
(Notes 1, 2)
Operation
Frequency
130 kHz
130 kHz
100 kHz
100 kHz
Current Limit (A)
0.46
0.66
0.61
0.86
Max. R
DS(ON)
(W)
8.0
4.6
8.0
4.6
230 V
AC
+
15%
15 W
21 W
17 W
25 W
85 ~ 265
V
AC
12 W
17 W
14 W
20 W
Package
PDIP−7
PDIP−7
PDIP−7
PDIP−7
1. The junction temperature can limit the maximum output power.
2. Maximum practical continuous power in an open-frame design at 50°C ambient.
Vo
AC
IN
LINE
DRAIN
FB
PWM
COMP
VCC
GND
(a) Isolated Opto−coupler Feedback (Enable Line Detection)
Vo
AC
IN
LINE
COMP
DRAIN
PWM
VCC
FB
GND
(b) Non−isolated Direct Feedback (Disable Line Detection)
Figure 1. Application Schematic
−
Isolated or Non-isolated Flyback Converter
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2
FSL518H, FSL538H, FSL518A, FSL538A
LINE
VCC
DRAIN
Brown−out
Initial Setting and
Line Detection
V
CC
Supply
V
CC
good
V
START/ STOP
CC−
HV Current
Source
V
BURH/L
LOVP
V
COMP
Frequency
Reduction
OSC
V
LIMIT
E/A
V
REF
Soft
Start
S
R
Q
Q
FB
PWM
3R
R
Gate Driver
LEB
S
COMP
Brown
−
out
V
OLP
V
CC
V
CC−OVP
t
D− OLP
TSD
t
BO
Slope
Compensation
AOCP
Logic
R
SENSE
V
AOCP
Q
Q
Protection
V
CC
good
S
R
GND
Figure 2. Internal Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
Pin Name
GND
VCC
FB
Pin Function
Ground
Power Supply
Feedback
Description
SENSEFET source terminal and internal controller ground.
This pin is connected to an external capacitor and provides internal operating current of
the IC. It also includes an auto-recovery over-voltage protection.
This pin is connected to the input of transconductance amplifier for regulating output volt-
age of the power converter. If transconductance amplifier is not used, connect FB to
GND.
Control-loop compensation. For opto-coupler feedback, connect COMP to opto coupler
directly.
4
5
COMP
LINE
Feedback-Loop
Compensation
Brown in/out, LOVP, For line detection(Line OVP, Brown in/out), this pin needs to be connected to the high-
Burst-mode Setting voltage DC link through voltage divider. And it’s also multiple-function pin for burst−mode
adjustment.
MOSFET Drain
High-voltage power MOSFET drain connection. In addition, during startup and protection
mode, the internal high-voltage current source supplies internal bias current and charges
the external capacitor connected to the VCC pin.
7,8
DRAIN
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3
FSL518H, FSL538H, FSL518A, FSL538A
MAXIMUM RATINGS
Rating
DRAIN Pin Voltage
VCC Pin Voltage
Feedback Pin Voltage
Compensation Pin Voltage
Line-detection Pin Voltage
DRAIN Pin Pulsed Current (Note 3)
FSL518H/A
FSL538H/A
Single Pulse Avalanche Energy (Note 4)
FSL518H/A
FSL538H/A
Total Power Dissipation (PDIP−7)
FSL518H/A & FSL538H/A
Junction Temperature (Note 5)
Operating Junction Temperature (Note 6)
Storage Temperature
ESD Capability HBM, JESD22−A114
ESD Capability HBM, JESD22−A114 (Except DRAIN pin)
ESD Capability CDM, JESD22−C101
Symbol
V
DS
V
CC
V
FB
V
COMP
V
LINE
I
D-PULSE
Value
−0.3
to 800
−0.3
to 26
−0.3
to 5.0
−0.3
to 5.0
−0.3
to V
CC
2.1
2.8
6.0
11.7
1.25
150
−40
to +125
−55
to +150
1000
2000
1000
Unit
V
V
V
V
V
A
E
AS
mJ
P
D
T
J
T
J
T
STG
W
°C
°C
°C
V
V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
3. Repetitive peak switching current when the inductive load is assumed: Limited by maximum duty and junction temperature.
4. L= 45 mH, starting T
J
= 25°C.
5. Although this parameter guarantees IC operation, it does not guarantee all electrical characteristics
6. Junction temperature can limit maximum output power of power converter controlled by the device.
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, PDIP−7
Thermal Resistance, Junction-to-Air (Note 7)
FSL518H/A & FSL538H/A
Thermal Reference, Junction-to-Lead (Note 7)
FSL518H/A & FSL538H/A
Symbol
Value
Unit
°C/W
R
qJA
R
yJL
100
18
7. JEDEC recommended environment, JESD51−2, and test board, JESD51−3, with minimum land pattern.
ELECTRICAL CHARACTERISTICS
T
J
=
−40
to +125°C and V
CC
= 14 V unless otherwise specified.
Parameter
SENSEFET Section
MOSFET Peak Current Limit
T
J
= 25°C, Duty = 60%
di/dt = 100 mA/ms
di/dt = 100 mA/ms
di/dt = 143 mA/ms
di/dt = 143 mA/ms
FSL518H
FSL518A
FSL538H
FSL538A
I
LIM
428
560
614
790
460
610
660
860
6.3
3.8
492
660
706
930
8.0
4.6
mA
Test Conditions
Symbol
Min
Typ
Max
Unit
Drain-to-Source On-State Resistance
MOSFET ON, T
J
= 25°C
FSL518H/A, I
DRAIN
= 0.46 A
FSL538H/A, I
DRAIN
= 0.66 A
V
DS
= 480 V, V
GS
= 0 V, f = 1 MHz,
T
J
= 25°C
FSL518H/A
FSL538H/A
R
DS(ON)
Ω
Output Capacitance (Note 9)
C
OSS
3.8
5.0
pF
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FSL518H, FSL538H, FSL518A, FSL538A
ELECTRICAL CHARACTERISTICS
(continued)
T
J
=
−40
to +125°C and V
CC
= 14 V unless otherwise specified.
Parameter
SENSEFET Section
Effective Output Capacitance (Note 9)
V
DS
= 0 to 480 V, V
GS
= 0 V, T
J
= 25°C
FSL518H/A
FSL538H/A
V
DRAIN
= 40 V to 360 V
FSL518H/A, I
DRAIN
= 0.4 A
FSL538H/A, I
DRAIN
= 0.6 A
V
DRAIN
= 360 V to 40 V
FSL518H/A, I
DRAIN
= 0.4 A
FSL538H/A, I
DRAIN
= 0.6 A
V
GS
= 0 V, I
D
= 250
mA,
T
J
= 25°C
V
DS
= 800 V, V
GS
= 0 V, T
J
= 25°C
V
DS
= 640 V, V
GS
= 0 V, T
J
= 125°C
C
OSS(eff)
31
40
26
35
34
30
800
25
250
pF
Test Conditions
Symbol
Min
Typ
Max
Unit
DRAIN Voltage Rise Time (Note 8)
t
r
ns
DRAIN Voltage Fall Time (Note 8)
t
f
ns
Drain to Source Breakdown Voltage
Zero Gate Voltage Drain Current
VCC Section
Controller Turn-on Threshold Voltage
Under-voltage Lockout Threshold
Voltage
V
CC
Regulation Voltage
Restart Time in Protection Mode (Note 9)
Soft-start Time
Oscillation Section
Switching Frequency
BV
DSS
I
DSS
V
mA
V
CC-START
V
CC-STOP
During Protection, T
J
= 25°C
V
CC-HVREG
t
AR
t
SS
15
7
9
16
8
10
800
17
9
11
V
V
V
ms
7
10
13
ms
V
CC
= 14 V, V
COMP
= 3.6 V, T
J
= 25°C
FSL5x8H
FSL5x8A
T
J
=
−40
~ 125°C
V
COMP
= 3.6 V
FSL5x8H
FSL5x8A
V
COMP
= 3.6 V
V
COMP
= 1.4 V
FSL5x8H
FSL5x8A
V
BURL
= 0.4 V
f
S
122
94
130
100
±5
±6.2
±4.8
3.2
115
89
138
106
±10
kHz
Switching Frequency Variation
Frequency Modulation Range
Δf
S
f
M
%
kHz
Frequency Modulation Period (Note 9)
Green-mode Entry Frequency
T
FM
f
N
ms
kHz
Green-mode Ending Frequency
Frequency-limiting Voltage
Green-mode Entry COMP Voltage (Note 9)
Green-mode Ending COMP Voltage
Burst-Mode Section
COMP Threshold Voltage for Entering
Burst−mode when Line Detection is
Enabled
COMP Threshold Voltage for Entering
Burst−mode when Line Detection is
Disabled
COMP Threshold Voltage for Leaving
Burst−mode
f
G
V
COMP-S
V
COMP-N
V
COMP-G
22
25
V
OLP
1.4
V
BURL
28
kHz
V
V
V
V
LINE
in V
LINE-SET0
during t
SET
V
LINE
in V
LINE-SET1
during t
SET
V
LINE
in V
LINE-SET2
during t
SET
0.9 V < V
LINE
< 1.2 V
1.2 V < V
LINE
< 3.6 V
V
BURL
0.35
0.45
0.55
0.4
0.5
0.6
0.45
0.55
0.65
V
V
BURL
0.4
A
V-BURST
×
V
LINE
V
BURL
+ 0.1
V
V
BURH
V
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