Fairchild FSDL0365RL, FSDL0365RL, FSDL0365RN, FSDL0365RN, FSDM0365RL Schematic [ru]
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FSDL0365RN, FSDM0365RN
www.fairchildsemi.com
Green Mode Fairchild Power Switch (FPS
Features
• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with
Advanced Burst-Mode Operation
• Frequency Modulation for low EMI
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse by Pulse Current Limiting
• Abnormal Over Current Protection
• Over Voltage Protection
• Over Load Protection
• Internal Thermal Shutdown Function
• Auto-Restart Mode
• Under Voltage Lo ck out
• Low Operating Current (3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start
Applications
• SMPS for VCR, SVR, STB, DVD & DVCD
• SMPS for Printer, Facsimile & Scanner
• Adaptor for C amcorder
PRODUCT
FSDL321 11W 17W 8W 12W
FSDH321 11W 17W 8W 12W
FSDL0165RN 13W 23W 11W 17W
FSDM0265RN 16W 27W 13W 20W
FSDH0265RN 16W 27W 13W 20W
FSDL0365RN 19W 30W 16W 24W
FSDM0365RN 19W 30W 16W 24W
FSDL321L 11W 17W 8W 12W
FSDH321L 11W 17W 8W 12W
FSDL0165RL 13W 23W 11W 17W
FSDM0265RL 16W 27W 13W 20W
FSDH0265RL 16W 27W 13W 20W
FSDL0365RL 19W 30W 16W 24W
FSDM0365RL 19W 30W 16W 24W
OUTPUT POWER TABLE
230VAC ±15%
Adapt-
(1)
er
Open
Frame
TM
(3)
(2)
)
85-265VAC
Adapt-
(1)
er
Open
Frame
(2)
Description
The FSDx0365RN(x stands for L, M) ar e integrated Pulse
Width Modulators (PWM) and Sense FETs specifically
designed for high performance offlin e Switch Mode Power
Supplies (SMPS) with minimal external components. Both
devices are integrated high voltage power switching regulators which combine an avalanche rugge d Sense FET with a
current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency
modulation for reduced EMI, Under Voltage Lock Out
(UVLO) protection, Leading Edge Blanking (LEB), optimized gate turn-on/turn-off driver, Thermal Shut Down
(TSD) protection, Abnormal Over Current Protection
(AOCP) and temperature compensated precision current
sources for loop compensation and fault pro tection circu itry.
When compared to a discrete MOSFET and controller or
RCC switching converter solution, the FSDx0365RN reduce
total component count, design size, weight a nd at the same
time increase efficiency, productivity, and system reliability.
Both devices are a basic platform well suited for cost effective designs of flyback converters.
Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient. 2.
Maximum practical continuous power in an open fr ame
design at 50°C ambient. 3. 230 VAC or 100/115 VAC with
doubler.
Typical Circuit
AC
IN
Drain
Vstr
Ipk
PWM
Vfb Vcc
Figure 1. Typical Flybac k Application
Source
DC
OUT
©2004 Fairchild Semiconductor Corporation
Rev.1.0.5
FSDL0365RN, FSDM0365RN
Internal Block Diagram
Vcc
2 6,7,8
+
V
BURL/VBURH
-
8V/12V
Burst
Vcc
I
B_PEAK
V
BURH
Vcc Vcc
I
FB
V
delay
3
I
FB
Normal
2.5R
I
pk
4
V
SD
R
Soft start
Vcc good
Freq.
Modulation
OSC
PWM
SQQ
R
Vcc
Vovp
TSD
Vcc good
SQQ
R
I
start
Vstr
Vref
AOCP
5
LEB
Internal
Bias
Gate
driver
Vocp
Drain
1
GND
Figure 2. Functional Block Diagram of FSDx0365RN
2
Pin Definitions
Pin Number Pin Name Pin Function Description
1 GND Sense FET source terminal on primary side and internal control ground.
Positive supply voltage input. Although connected to an auxiliary transformer winding, current is supplied from pin 5 (Vstr) via an internal switch during
2Vcc
3Vfb
4Ipk
5Vstr
6, 7, 8 Drain
startup (see Internal Block Diagram section). It is not until Vcc reaches the
UVLO upper threshold (12V) that the internal start-up switch opens and device power is supplied via the auxiliary transformer winding.
The feedback voltage pin is the non-inverting input to the PWM comparator.
It has a 0.9mA current source connected internally while a capacitor and optocoupler are typically connected externally. A feedback voltage of 6V triggers over load protection (OLP). There is a time delay while charging
between 3V and 6V using an internal 5uA current source, which prevents
false triggering under transient conditions but still allows the protection
mechanism to operate under true overload conditions.
Pin to adjust the current limit of the Sense FET. The feedback 0.9mA current
source is diverted to the parallel combination of an internal 2.8kΩ resistor
and any external resistor to GND on this pin to determine the current limit.
If this pin is tied to Vcc or left floating, the typical current limit will be 2.15A.
This pin connects directly to the rectified AC line voltage source. At start up
the internal switch supplies internal bias and charges an external storage
capacitor placed between the Vcc pin and ground. Once the Vcc reaches
12V, the internal switch is disabled.
The Drain pin is designed to connect directly to the primary lead of the transformer and is capable of switching a maximum of 650V. Minimizing the
length of the trace connecting this pin to the transformer will decrease leakage inductance.
FSDL0365RN, FSDM0365RN
Pin Configuration
8DIP
8DIP
8DIP8DIP
8LSOP
8LSOP
8LSOP8LSOP
Drain
Drain
1111
GND
GNDGND
2222
Vcc
Vcc
VccVcc
Vfb
Vfb
VfbVfb
3333
44445
Ipk
Ipk
IpkIpk
Figure 3. Pin Configuration (Top View)
8888GND
7777
6666
5
55
DrainDrain
Drain
Drain
DrainDrain
Drain
Drain
DrainDrain
Vstr
Vstr
VstrVstr
3
FSDL0365RN, FSDM0365RN
Absolute Maximum Ratings
(Ta=25°C, unless otherwise specified)
Characteristic Symbol Value Unit
Drain Current Pulsed
Single Pulsed Avalanche Energy
(1)
(2)
Maximum Supply Voltage V
Analog Input Voltage Range V
Total Power Dissipation P
Operating Junction Temperature. T
Operating Ambient Temperature. T
Storage Temperature Range. T
Note:
1. Repetitive rating: Pulse width limited by maximum junction temperature
2. L = 51mH, starting Tj = 25°C
3. L = 13µH, starting Tj = 25°C
4. Vsd is shutdown feedback voltage ( see Protection Section in Electrical Characteristics )
I
DM
E
AS
CC,MAX
FB
D
J
A
STG
12.0 A
127 mJ
20 V
-0.3 to V
SD
1.56 W
+150 °C
-25 to +85 °C
-55 to +150 °C
DC
V
Thermal Impedance
Parameter Symbol Value Unit
8DIP
(1)
Junction-to-Ambient Thermal
Junction-to-Case Thermal
Note:
1. Free standing with no heatsink.
2. Measured on the GND pin close to plastic interface.
3. Soldered to 0.36 sq. inch(232mm2), 2 oz.(610g/m2) copper clad.
θ
JA
θ
JC
(2)
85.74 °C/W
30.38 °C/W
(3)
4
Electrical Characteristics
(Ta = 25°C unless otherwise specified)
Parameter Symbol Condition Min. Typ. Max. Unit
Sense FET SECTION
FSDL0365RN, FSDM0365RN
Startup Voltage (Vstr) Breakdown BV
Drain-Source Breakdown Voltage BV
Off-State Current
(Max.Rating =660V)
On-State Resistance
(1)
I
R
DS(ON)
Input Capacitance C
Output Capacitance C
Reverse Transfer Capacitance C
Turn On Delay Time T
D(ON)
Rise Time T
Turn Off Delay Time T
D(OFF)
Fall Time T
CONTROL SECTION
Output Frequency F
Output Frequency Modulation F
STR
DSS
DSS
VCC=0V, ID=1mA 650 - - V
VGS=0V, I
VDS=660V, V
=0.8Max.Rating,
V
DS
V
=0V, T
GS
=50µA 650 - - V
D
=0V - - 50 µA
GS
=125°C
C
- - 200 µA
VGS=10V, ID=0.5A - 3.6 4.5
ISS
OSS
RSS
VGS=0V, VDS=25V,
F=1MHz
V
=325V, ID=1.0A
- 34 -
R
DS
(Sense FET switching
- 315 - pF
-47-
-9-
- 11.2 - ns
time is essentially
- 28.2 -
independent of
operating temperature)
- 32 -
F
OSC
61 67 73 KHz
FSDM0365R
±1.5 ±2.0 ±2.5 KHz
MOD
Ω
pF
pF
ns
ns
ns
Output Frequency F
OSC
45 50 55 KHz
FSDL0365R
Output Frequency Modulation F
Frequency Change With Temperature
(2)
Maximum Duty Cycle D
Minimum Duty Cycle D
Start threshold voltage V
Stop threshold voltage V
±1.0 ±1.5 ±2.0 KHz
MOD
--25°C ≤ Ta ≤ 85°C - ±5 ±10 %
71 77 83 %
MAX
000%
MIN
VFB=GND 11 12 13 V
START
VFB=GND 7 8 9 V
STOP
Feedback Source Current IFB VFB=GND 0.7 0.9 1.1 mA
Internal Soft Start Time T
VFB=4V 10 15 20 ms
S/S
BURST MODE SECTION
V
BURH
- 0.4 0.5 0.6 V
Burst Mode Voltages
V
BURL
- 0.25 0.35 0.45 V
PROTECTION SECTION
Drain to Source Peak Current Limit I
Max. inductor current 1.89 2.15 2.41 A
OVER
5
FSDL0365RN, FSDM0365RN
Current Limit Delay
Thermal Shutdown T
(3)
T
- 500 - ns
CLD
- 125 140 - °C
SD
Shutdown Feedback Voltage VSD 5.5 6.0 6.5 V
Over Voltage Protection V
Shutdown Feedback Delay Current I
Leading Edge Blanking Time T
18 19 - V
OVP
DELAY
LEB
V
=4V 3.5 5.0 6.5 µA
FB
200 - - ns
TOTAL DEVICE SECTION
Operating Current I
Start Up Current I
Vstr Supply Voltage V
Note:
1. Pulse test: Pulse width
2. These parameters, a lthough gua ranteed, are tested in EDS (wafer test) process
3. These parameters, a lthough gua ranteed, are not 100% tested in produ ction
≤
300uS, duty ≤ 2%
VCC=14V 1 3 5 mA
OP
VCC=0V 0.7 0.85 1.0 mA
START
STR
VCC=0V 35 - - V
6
FSDL0365RN, FSDM0365RN
Comparison Between KA5x0365RN and FSDx0365RN
Function KA5x0365RN FSDx0365RN FSDx0365RN Advantages
Soft-Start not applicable 15mS • Gradually increasing current limit
during soft-start further reduces peak
current and voltage component
stresses
• Eliminates external components used
for soft-start in most applications
• Reduces or eliminates output
overshoot
External Current Limit not applicable Programmable of
default current limit
Frequency Modulation not applicable ±2.0KHz @67KHz
±1.5KHz @50KHz
Burst Mode Operation not applicable Yes-built into
controller
Drain Creepage at
Package
1,02mm 7.62mm • Greater immunity to arcing as a result
• Smaller transformer
• Allows power limiting (constant overload power)
• Allows use of larger device for lower
losses and higher efficiency.
• Reduced conducted EMI
• Improve light load efficiency
• Reduces no-load consumption
• Transformer audible noise reduction
of build-up of dust, debris and other
contaminants
7
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