iris-x6757 International Rectifier Corp., iris-x6757 Datasheet

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iris-x6757

Manufacturer Part Number
iris-x6757
Description
Integrated Switcher
Manufacturer
International Rectifier Corp.
Datasheet
• 7-pin SIP type full molded package, optimum IC for low-height SMPS.
• Oscillator is provided on the monolithic control with adopting On-Chip
Trimming Technology
• Small temperature characteristics variation by adopting a comparator to
compensate for temperature on the control part.
• Low start-up circuit current (100uA max)
•Avalanche energy guaranteed MOSFET with high VDSS
• Built-in constant voltage drive circuit
• Built-in step drive circuit
• Built-in low frequency PWM mode (≒22 kHz)
• UVLO Burst Standby
• Two operational modes by auto switching functions according to load
• Various kinds of protection functions
Note 1:
The Pout (W) represents the thermal rating at Quasi-Resonant operation, and the peak power output is obtained by approximating 120 to
140 % of the above listed value. When the output voltage is low, and the ON-duty is narrow, the Pout (W) shall become lower than that
of the above.
Features
Description
IRIS-X6757 is a hybrid IC consisting of a power MOSFET and a controller IC, designed for Quasi-Resonant (including low frequency PWM)
fly-back converter type SMPS (Switching Mode Power Supply)
standardizing of a power supply system reducing external component count and simplifying the circuit design.
Typical Connection Diagram
circuit since the MOSFET guarantees the avalanche energy.
The built-in power MOSFET simplifies the surge
No VDSS de-rating is required.
For middle~heavy load operation : QR mode
For light~middle load operation : 1 Bottom Skip mode
Pulse-by-Pulse Overcurrent Protection (OCP)
Overvoltage Protection with Latch mode (OVP)
Overload Protection with Latch mode (OLP)
The maximum limit of on-time
I I I I R R R R I I I I S S S S - - - - X X X X 6 6 6 6 7 7 7 7 5 5 5 5 7 7 7 7
S S S S S S S S / / / / O O O O L L L L P P P P
O O O O C C C C P P P P / / / / B B B B D D D D
V V V V c c c c c c c c
G G G G N N N N D D D D
F F F F B B B B
D D D D
S S S S
applications.
absorption
IRIS-X6757
T ype
This IC realizes high efficiency, low noise, downsizing and
Key Specifications
INTEGRATED SWITCHER
MOSFET
VDSS(V)
650
Package Outline
TO-247 Fullpack (7 Lead)
RDS(ON)
0.62Ω
MAX
Data Sheet No. PD 96954A
IRIS-X6757
AC input(V)
230 ± 15%
85 to 264
www.irf.com
Pout(W)
Note 1
300
180

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iris-x6757 Summary of contents

Page 1

... The maximum limit of on-time Description IRIS-X6757 is a hybrid IC consisting of a power MOSFET and a controller IC, designed for Quasi-Resonant (including low frequency PWM) fly-back converter type SMPS (Switching Mode Power Supply) standardizing of a power supply system reducing external component count and simplifying the circuit design. ...

Page 2

... IRIS-X6757 Absolute Maximum Ratings (Ta=25ºC) Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to terminals stated, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions ...

Page 3

... IRIS-X6757 Electrical Characteristics (for Control IC) Electrical characteristics for control part (Ta=25℃, Vin=20V,unless otherwise specified) Symbol Definition Power Supply Start-up Operation V Operation Start Voltage CC(ON) V Operation Stop Voltage CC(OFF) I Circuit Current in Operation CC(ON) I Circuit Current in Non-Operation CC(OFF) fosc Oscillation Frequency V Soft Start Operation Stop Voltage ...

Page 4

... IRIS-X6757 Electrical Characteristics (for Control IC), Contd. Stand-by Operation V Stand-by Operation Start Voltage CC(S) V Stand-by Operation Start Voltage Interval CC(SK) I Stand-by Non-Operation Circuit Current CC( Pin Inflow Current (Stand-by) FB(S) Stand-by Operation FB Pin Threshold V Voltage FB(S) T Minimum ON Time ON(MIN) Protection Operation T Maximum ON Time ON(MAX) V OLP Operation Threshold Voltage ...

Page 5

... V - 300 µA - 0.62 Ω - 500 nSec Between channel - 1.09 ℃/W and internal frame IRIS-X6757 MOSFET  A.S.O. Curve Drain current limit by ON resistance 1 ASO temperature derating shall be made by obtaining ASO Coefficient from the left curve in your use 100 Drain-to-Source Voltage V Note ID=300µA ...

Page 6

... IRIS-X6757 Avalanche energy derating curve 50 75 100 Channel temperature Tch [ ℃ ] IRIS-X6757 MOSFET Ta-PD1 Curve P =44[W] D1 With infinite heatsink Without heatsink P =2.8[ 100 120 Ambient temperature Ta[℃] 125 150 140 160 ...

Page 7

... IRIS-X6757 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 0.1 0.01 0.001 1µ 10µ urve =0.8[ tern al fram e tem p eratu re T [℃ IRIS-X6757 Transient thermal resistance curve 100µ 1m time t [sec 10m 100m www.irf.com ...

Page 8

... IRIS-X6757 Block Diagram 4 4 + + Reg& Iconst - - Burst Burst Start Control Control Stop Burst OVP + - OLP Pin Designation Pin No IRIS GND VCC SS/OLP FB OCP/BD 7 Protection latch OSC ...

Page 9

... IRIS-X6757 Case Outline ...

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