FSCM0765RIWDTU Fairchild Semiconductor, FSCM0765RIWDTU Datasheet

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FSCM0765RIWDTU

Manufacturer Part Number
FSCM0765RIWDTU
Description
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of FSCM0765RIWDTU

Power Switch Family
FSCM0765R
Input Voltage
-0.3 to 20V
Power Switch On Resistance
1.4Ohm
Output Current
2.64A
Number Of Outputs
Single
Mounting
Through Hole
Supply Current
2.5mA
Package Type
I2PAK
Operating Temperature (min)
-25C
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Pin Count
6 +Tab
Power Dissipation
83W
Lead Free Status / Rohs Status
Compliant
Features
• Internal Avalanche Rugged SenseFET
• Low Start-up Current (max 40uA)
• Low Power Consumption under 1 W at 240VAC and
• Precise Fixed Operating Frequency (66kHz)
• Frequency Modulation for low EMI
• Pulse by Pulse Current Limiting (Adjustable)
• Over Voltage Protection (OVP)
• Over Load Protection (OLP)
• Thermal Shutdown Function (TSD)
• Auto-Restart Mode
• Under Voltage Lock Out (UVLO) with Hysteresis
• Built-in Soft Start (15ms)
Application
• SMPS for VCR, SVR, STB, DVD and DVCD
• Adaptor
• SMPS for LCD Monitor
Related Application Notes
• AN-4137: Design Guidelines for Off-line Flyback
• AN-4140: Transformer Design Consideration for off-line
• AN-4141: Troubleshooting and Design Tips for Fairchild
• AN-4148: Audible Noise Reduction Techniques for FPS
Description
The FSCM0765R is 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 which
combines an avalanche rugged SenseFET with a current
mode PWM control block. The PWM controller includes
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 self protection circuitry.
Compared with a discrete MOSFET and PWM controller
solution, it can reduce total cost, component count, size
weight while simultaneously increasing efficiency, productivity,
and system reliability. This device is a basic platform well
suited for cost effective designs of flyback converters.
©2005 Fairchild Semiconductor Corporation
FSCM0765R
Green Mode Fairchild Power Switch (FPS
0.4W Load
Converters Using Fairchild Power Switch (FPS)
Flyback Converters using Fairchild Power Switch
Power Switch Flyback Applications
Applications
,
and
Notes:
1. Typical continuous power in a non-ventilated enclosed
2. Maximum practical continuous power in an open-frame
3. 230 VAC or 100/115 VAC with doubler.
Typical Circuit
FSCM0565RG
FSCM0765RG
FSCM0565RJ
FSCM0765RJ
FSCM0565RI
FSCM0765RI
AC
PRODUCT
IN
adapter measured at 50°C ambient.
design at 50°C ambient.
Figure 1. Typical Flyback Application
Table 1. Maximum Output Power
OUTPUT POWER TABLE
I
limit
Adapt-
230VAC ±15%
50W
65W
50W
65W
70W
85W
Vfb
er
PWM
(1)
Vcc
Drain
GND
www.fairchildsemi.com
Frame
Open
65W
70W
65W
70W
85W
95W
(3)
TM
(2)
)
Adapt-
40W
50W
40W
50W
60W
70W
er
85-265VAC
(1)
Rev.1.1.0
Frame
Open
50W
60W
50W
60W
70W
85W
OUT
DC
(2)

Related parts for FSCM0765RIWDTU

FSCM0765RIWDTU Summary of contents

Page 1

... This device is a basic platform well suited for cost effective designs of flyback converters. ©2005 Fairchild Semiconductor Corporation OUTPUT POWER TABLE 230VAC ±15% PRODUCT Adapt- ...

Page 2

FSCM0765R Internal Block Diagram N.C 5 0.3/0. Vcc Vcc I I delay Soft start 0.3K I_limit OVP TSD Vcc UV Reset Vcc Good 8V/12V Freq. ...

Page 3

Pin Definitions Pin Number Pin Name 1 Drain 2 GND Feedback (FB I_limit Pin Configuration FSCM0765RJ D2-PAK-6L Figure 3. Pin Configuration (Top View)Absolute Maximum Ratings Pin Function Description This pin is the ...

Page 4

FSCM0765R (Ta=25°C, unless otherwise specified.) Parameter (1) Drain-Source (GND) Voltage Drain-Gate Voltage (R =1MΩ) GS Gate-Source (GND) Voltage (2) Drain Current Pulsed Continuous Drain Current (D2-PAK, I2-PAK 25° =100°C Continuous Drain Current (TO-220 ...

Page 5

... Symbol Condition 0V, I DSS Max, Rating DS I DSS ( 10V, I DS(ON 0V OSS f = 1MHz 325V, I D(ON) DD (MOSFET switching T R time is essentially independent of T D(OFF) operating temperature 14V, V OSC CC ΔF mod T mod 10V ≤ STABLE CC ΔF −25°C ≤ Ta ≤ +85°C OSC D MAX D MIN V V ...

Page 6

FSCM0765R PROTECTION SECTION (2) Peak Current Limit Over Voltage Protection Thermal Shutdown Temperature ShutdownDelay Current Shutdown Feedback Voltage TOTAL DEVICE SECTION Startup Current (3) Operating Supply Current Notes: 1. These parameters, although guaranteed at the design, are not tested in ...

Page 7

Comparison Between FSDM07652R and FSCM0765R Function Frequency Modulation Pulse-by-pulse Current Limit • Internally fixed (2.5A) Internal Startup Circuit • Available FSDM07652R N/A Available • Modulated frequency range (DF • Frequency modulation cycle (T • Programmable using external resistor (3A max) ...

Page 8

FSCM0765R Typical Performance Characteristics (These Characteristic Graphs are Normalized at Ta= 25°C.) 1.60 1.40 1.20 1.00 0.80 0.60 -50 - Junction T emperature ( ℃ ) Figure 4. Startup Current vs. Temp 1.20 1.12 1.04 0.96 0.88 0.80 ...

Page 9

Typical Performance Characteristics (These Characteristic Graphs are Normalized at Ta= 25°C 1.20 1.12 1.04 0.96 0.88 0.80 -50 - Junction T emperature ( ℃ ) Figure 10. ShutDown Feedback Voltage vs. Temp 1.20 1.12 1.04 0.96 0.88 0.80 ...

Page 10

... Comparing the feedback voltage with the voltage across the Rsense resistor makes it possible to control the switching duty cycle. When the reference pin voltage of the KA431 exceeds the internal reference voltage of 2.5V, the H11A817A LED current increases, thus pulling down the feedback voltage and reducing the duty cycle ...

Page 11

... Vcc pin. a When Vcc reaches the start voltage of 12V, the FSCM0765R resumes its 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). Fault occurs ...

Page 12

... As shown in Figure 22, the device automatically enters into burst mode when the feedback voltage drops below VBL (300mV). At this point 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 VBH (500mV) resumes ...

Page 13

Typical application circuit Application Output Power LCD Monitor Features • High efficiency (>81% at 85Vac input) • Low standby mode power consumption (<1W at 240Vac input and 0.4W load) • Low component count • Enhanced system reliability through various protection ...

Page 14

FSCM0765R 2. Transformer 3.Winding Specification No Pin (s→f) 4 → Insulation: Polyester Tape t = 0.050mm, 2Layers 2 → 1 Np/2 Insulation: Polyester Tape t = 0.050mm, 2Layers 10 → 12V Insulation: Polyester Tape t = ...

Page 15

Demo Circuit Part List Part Value Fuse F101 2A/250V NTC RT101 5D-9 Resistor R101 560K R102 500K R103 56K R104 5 R105 500K R106 5K R201 1K R202 10K R203 1.2K R204 5.6K R205 5.6K Capacitor C101 220nF/275VAC C102 ...

Page 16

FSCM0765R Package Dimensions 1.40 1.00 9.40 9.00 (0.75) 5.10 4.70 MAX1.10 2.19 (1.75) (0.90) 16 D2-PAK-6L A 10.10 9.70 10.00 MAX0.80 0.70 0.50 MIN 0.85 1.75 1.27 3.81 10.20 9.80 (8.58) (4.40) R0.45 (7.20) 15.60 15.00 NOTES: UNLESS OTHERWISE SPECIFIED ...

Page 17

Package Dimensions (Continued) I2-PAK-6L (Forming) FSCM0765R 17 ...

Page 18

FSCM0765R Package Dimensions 9.40 9.00 (0.75) 8.30 MAX1.10 7.30 2.19 18 (Continued) TO-220-6L (Forming) 10.10 2.90 9.70 2.70 15.90 15.50 R0.55 R0.55 MAX0.80 0.70 0.50 1.75 1.27 3.81 10.20 9.80 Dimensions in Millimeters 4.70 4.30 1.40 1.25 20.00 (13.55) 19.00 ...

Page 19

... Ordering Information Product Number FSCM0765RJ FSCM0765RIWDTU FSCM0765RGWDTU Package Marking Code D2-PAK-6L I2-PAK-6L CM0765R TO-220-6L FSCM0765R BVdss Rds(on) Max. 1.6 Ω 650V 19 ...

Page 20

... FSCM0765R DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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