Datenblatt-pdf.com


DM0365R Schematic ( PDF Datasheet ) - Fairchild Semiconductor

Teilenummer DM0365R
Beschreibung FSDM0365R
Hersteller Fairchild Semiconductor
Logo Fairchild Semiconductor Logo 




Gesamt 20 Seiten
DM0365R Datasheet, Funktion
www.fairchildsemi.com
FSDL0365RN, FSDM0365RN
Green Mode Fairchild Power Switch (FPSTM)
Features
• Internal Avalanche Rugged Sense FET
• Consumes only 0.65W at 240VAC & 0.3W load with
Advanced Burst-Mode Operation
• Frequency Modulation for EMI Reduction
• Precision Fixed Operating Frequency
• Internal Start-up Circuit
• Pulse-by-Pulse Current Limiting
• Abnormal Over Current Protection (AOCP)
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Internal Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lockout (UVLO)
• Low Operating Current (3mA)
• Adjustable Peak Current Limit
• Built-in Soft Start
Applications
• SMPS for VCR, SVR, STB, DVD & DVCD Player
• SMPS for Printer, Facsimile & Scanner
• Adapter for Camcorder
Related Application Notes
• AN-4137, 4141, 4147(Flyback) / AN-4134(Forward)
Description
Each product in the FSDx0365RN (x for L, M) family consists
of an integrated Pulse Width Modulator (PWM) and Sense
FET, and is specifically designed for high performance off-line
Switch Mode Power Supplies (SMPS) with minimal external
components. Both devices are integrated high voltage power
switching regulators which combine an avalanche rugged
Sense FET with a current mode PWM control block. The inte-
grated PWM controller features include: a fixed oscillator with
frequency modulation for reduced EMI, Under Voltage Lock
Out (UVLO) protection, Leading Edge Blanking (LEB), an
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 protection circuitry. When com-
pared to a discrete MOSFET and controller or RCC switching
converter solution, the FSDx0365RN devices reduce total
component count, design size, weight while increasing effi-
ciency, productivity and system reliability. Both devices pro-
vide a basic platform that is well suited for the design of cost-
effective flyback converters.
OUTPUT POWER TABLE
PRODUCT
230VAC ±15%(3)
Adapt- Open
er(1) Frame(2)
85-265VAC
Adapt- Open
er(1) Frame(2)
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
Notes:
1. Typical continuous power in a non-ventilated enclosed
adapter with sufficient drain pattern as a heat sinker, at
50°C ambient.
2. Maximum practical continuous power in an open frame
design with sufficient drain pattern as a heat sinker, at 50°C
ambient.
3. 230 VAC or 100/115 VAC with doubler.
Typical Circuit
AC
IN
Vstr Drain
Ipk
PWM
Vfb Vcc Source
DC
OUT
FPSTM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
Rev.1.0.8






DM0365R Datasheet, Funktion
FSDL0365RN, FSDM0365RN
Comparison Between KA5x0365RN and FSDx0365RN
Function
Soft-Start
KA5x0365RN
not applicable
External Current Limit not applicable
Frequency Modulation not applicable
Burst Mode Operation not applicable
Drain Creepage at
Package
1.02mm
FSDx0365RN
15ms
Programmable of
default current limit
±2.0KHz @67KHz
±1.5KHz @50KHz
Built into controller
7.62mm
FSDx0365RN Advantages
• Gradually increasing current limit
during soft-start further reduces peak
current and voltage stresses
• Eliminates external components used
for soft-start in most applications
• Reduces or eliminates output
overshoot
• Smaller transformer
• Allows power limiting (constant over-
load power)
• Allows use of larger device for lower
losses and higher efficiency.
• Reduces conducted EMI
• Improves light load efficiency
• Reduces power consumption at no-
load
• Transformer audible noise reduction
• Greater immunity to arcing provoked
by dust, debris and other contami-
nants
6

6 Page









DM0365R pdf, datenblatt
FSDL0365RN, FSDM0365RN
8. Adjusting Peak Current Limit : As shown in Figure 13,
a combined 2.8kinternal resistance is connected to the
non-inverting lead on the PWM comparator. A external
resistance of Rx on the current limit pin forms a parallel
resistance with the 2.8kwhen the internal diodes are
biased by the main current source of 900uA.
Frequency (MHz)
Figure 11. KA5-series FPS Full Range EMI scan(67KHz,
no Frequency Modulation) with DVD Player SET
Vcc
Vfb IDELAY
3
5uA
Vcc
900uA
IFB
2kΩ
Ipk
4
0.8kΩ
Rx
PWM
Comparator
SenseFET
Current
Sense
Figure 13. Peak Current Limit Adjustment
For example, FSDx0365RN has a typical Sense FET peak
current limit (ILIM) of 2.15A. ILIM can be adjusted to 1.5A
by inserting Rx between the Ipk pin and the ground. The
value of the Rx can be estimated by the following equations:
2.15A : 1.5A = 2.8k: Xk,
X = Rx || 2.8k.
(X represents the resistance of the parallel network)
Frequency (MHz)
Figure 12. FSDX-series FPS Full Range EMI Scan (67KHz,
with Frequency Modulation) with DVD Player SET
12

12 Page





SeitenGesamt 20 Seiten
PDF Download[ DM0365R Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
DM0365RFSDM0365RFairchild Semiconductor
Fairchild Semiconductor

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche