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International Rectifier Electronic Components Datasheet

F6456S Datasheet

Integrated Switcher

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Data Sheet No. PD 96942A
IRIS-F6456S
Features
Oscillator is provided on the monolithic control with adopting On-Chip-
Trimming technology.
INTEGRATED SWITCHER
Package Outline
Small temperature characteristics variation by adopting a comparator to
compensate for temperature on the control part.
Low start-up circuit current (100uA max)
Built-in Active Low-Pass Filter for stabilizing the operation in case of light
load
Avalanche energy guaranteed MOSFET with high VDSS
The built-in power MOSFET simplifies the surge absorption circuit
since the MOSFET guarantees the avalanche energy.
No VDSS de-rating is required.
Built-in constant voltage drive circuit
Built-in soft drive circuit
Built-in low frequency PRC mode (20kHz)
Various kinds of protection functions
Pulse-by-pulse Overcurrent Protection (OCP)
Overvoltage Protection with latch mode (OVP)
Thermal Shutdown with latch mode (TSD)
Descriptions
TO-247 Fullpack (5 Lead)
Key Specifications
Type
MOSFET
VDSS(V)
RDS(ON)
MAX
AC input(V)
Pout(W)
Note 1
230±15%
300
IRIS-F6456S
650
0.7
85 to 264
150
Note 1: The Pout (W) represents the thermal rating at Quasi-Resonant
Operation, and the peak power output is obtained by approximately 120
to 140% of the above listed. When the output voltage is low and ON-
duty is narrow, the Pout (W) shall become lower than that of above.
IRIS-F6456S is a hybrid IC consists from power MOSFET and a controller IC, designed for Quasi-Resonant (including
low frequency PRC) fly-back converter type SMPS (Switching Mode Power Supply) applications. This IC realizes
high efficiency, low noise, downsizing and standardizing of a power supply system reducing external components count
and simplifying the circuit designs. (Note). PRC is abbreviation of “Pulse Ratio Control” (On-width control with fixed
OFF-time).
Typical Connection Diagram
IRIS-F6400
GND
Vin
D
S
OCP/FB
www.irf.com


International Rectifier Electronic Components Datasheet

F6456S Datasheet

Integrated Switcher

No Preview Available !

IRIS-F6456S
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.
Symbol
Definition
IDpeak Drain Current
*1
IDMAX Maximum switching current *5
Terminals Max. Ratings Units
3-2 16 A
3-2 16 A
Note
Single Pulse
V2-5=0.78V
Ta=-20~+125
Single Pulse
EAS Single pulse avalanche energy *2
3-2
521 mJ IL peak=6.4A
Vin Input voltage for control part
4-5 35 V
Vth O.C.P/F.B Pin voltage
1-5 6 V
58 W With infintite heatsink
PD1 Power dissipation for MOSFET *3 3-2
2.8 W Without heatsink
Power dissipation for control part
Specified by
PD2
(Control IC) *4
4-5 0.49 W Vin×Iin
Internal frame temperature
Refer to recommended
TF in operation
- -20 ~ +125 operating temperature
Top Operating ambient temperature
- -20 ~ +125
Tstg Storage temperature
- -40 ~ +125
Tch Channel temperature
- 150
*1 Refer to MOS FET A.S.O curve
*2 MOS FET Tch-EAS curve
*3 Refer to MOS FET Ta-PD1 curve
*4 Refer to TF-PD2 curve for Control IC (See page 5)
Fig.1
V2-5
*5 Maximum switching current.
The maximum switching current is the Drain current determined by the drive voltage of the IC and
threshold voltage (Vth) of MOS FET. Therefore, in the event that voltage drop occurs between Pin 2 and
Pin 5 due to patterning, the maximum switching current decreases as shown by V2-5 in Fig.1
Accordingly please use this device within the decrease value, referring to the derating curve of the
maximum switching current.
Recommended operating conditions
Time for input of quasi resonant signals
For the quasi resonant signal inputted to O.C.P/F.B Pin
at the time of quasi resonant operation, the signal shall
be wider than Tth(2).
O.C.P/F.B
0V
Tth(2)1.0μsec
Vth(2)
www.irf.com


Part Number F6456S
Description Integrated Switcher
Maker International Rectifier
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F6456S Datasheet PDF






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