IRIS W6753

IRIS-W6753
INTEGRATED SWITCHER
Features
• 6-pin SIP type full molded package, optimum IC for low-height SMPS, with
distance between high and low voltage pin 1.8 mm with pin elimination.
Package Outline
• 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
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 step drive circuit
• Built-in low frequency PWM mode ( 22 kHz)
• UVLO Burst Standby
TO-220 Fullpack (7 Lead modified)
• Two operational modes by auto switching functions according to load
For middle~heavy load operation : QR mode
For light~middle load operation : 1 Bottom Skip mode
Key Specifications
• Various kinds of protection functions
MOSFET RDS(ON)
Pout(W)
Pulse-by-Pulse Overcurrent Protection (OCP)
T ype
VDSS(V)
MAX
AC input(V)
Note 1
Overvoltage Protection with Latch mode (OVP)
230 15%
120
Overload Protection with Latch mode (OLP)
The maximum limit of on-time
IRIS-W6753
650
85 to 264
58
Description
IRIS-W6753 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) applications. This IC realizes high efficiency, low noise, downsizing and
standardizing of a power supply system reducing external component count and simplifying the circuit design.
Typical Connection Diagram
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.
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IRIS-W6753
Absolute Maximum Ratings
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
EAS
Vcc
VSSOLP
IFB
VFB
VOCP BD
PD1
PD2
TF
Top
Tstg
Tch
Terminal Max. Ratings
1-3
11.2
Units
A
Maximum switching current *2
1-3
11.2
A
Single pulse avalanche energy *3
1-3
145
mJ
Input voltage for control part
SS/OLP pin voltage
FB pin inflow current
FB pin voltage
O.C.P/F.B pin voltage
4-3
5-3
6- 3
6- 3
7- 3
V
V
mA
V
V
Power dissipation of MOSFET *4
1-3
35
-0.5 ~ 6.0
10
-0.5 ~ 9.0
-1.5 ~ 5.0
26.0
Power dissipation for control part
(MIC)
Internal frame temperature in
operation
Operating ambient temperature
Storage temperature
Channel temperature
1.3
4-3
0.8
-
-20 ~ +115
-
-20 ~ +115
-40 ~ +125
150
W
W
Note
Single Pulse
Ta=-20~+125
Single Pulse
VDD=99V,L=20mH
IL=3.6A
within the limits of IFB
With infinite heatsink
Without heatsink
Specified by Vcc x Icc
Refer to recommended
operating temperature
*1 Refer to MOS FET A.S.O. curve
*2 Maximum switching current
The maximum switching current is the Drain current determined by the drive voltage of the IC and
threshold voltage (Vth) of the MOS FET.
*3 Refer to MOS FET Tch-EAS curve
*4 Refer to MOS FET Ta-PD1 curve
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IRIS-W6753
Electrical Characteristics (for Control IC)
Electrical characteristics for control part (Ta=25
, Vin=20V,unless otherwise specified)
Ratings
Symbol
Definition
Terminals
MIN
TYP
MAX
Units
Note
Power Supply Start-up Operation
VCC(ON)
Operation Start Voltage
4-3
16.3
18.2
19.9
V
Vcc=0 19.9V
VCC(OFF)
Operation Stop Voltage
4-3
8.8
9.7
10.6
V
Vcc=19.9 8.8
V
ICC(ON)
Circuit Current in Operation
4-3
-
-
6
mA
-
ICC(OFF)
Circuit Current in Non-Operation
4-3
-
-
100
µA
Vcc=15V
Oscillation Frequency
1-3
19
22
25
kHz
-
VSSOLP(SS)
Soft Start Operation Stop Voltage
5-3
1.1
1.2
1.4
V
-
ISSOLP(SS)
Soft Start Operation Charging Current
5-3
-710
-550
-390
µA
-
fosc
Normal Operation
VOCPBD(BS1)
Bottom-Skip Operation Threshold Voltage1
7-3
-0.72
-0.665
-0.605
V
-
VOCPBD(BS2)
Bottom-Skip Operation Threshold Voltage2
7-3
-0.485
-0.435
-0.385
V
-
VOCPBD(LIM)
Overcurrent Detection Threshold Voltage
7-3
-0.995
-0.94
-0.895
V
-
OCP/BD Pin Outflow Current
7-3
-250
-100
-40
µA
-
VOCPBD(TH1)
Quasi-Resonant Operation Threshold Voltage 1
7-3
0.28
0.4
0.52
V
-
VOCPBD(TH2)
Quasi-Resonant Operation Threshold Voltage 2
7-3
0.67
0.8
0.93
V
-
FB Pin Threshold Voltage
6-3
1.32
1.45
1.58
V
-
FB Pin Inflow Current (Normal Operation)
6-3
600
1000
1400
µA
-
IOCPBD
VFB(OFF)
IFB(ON)
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IRIS-W6753
Electrical Characteristics (for Control IC), Contd.
Stand-by Operation
VCC(S)
Stand-by Operation Start Voltage
4-3
10.3
11.1
12.1
V
Vcc=0 12.2V
VCC(SK)
Stand-by Operation Start Voltage Interval
4-3
1.1
1.35
1.65
V
-
ICC(S)
Stand-by Non-Operation Circuit Current
4-3
-
20
56
µA
Vcc=10.2V
IFB(S)
FB Pin Inflow Current (Stand-by)
6-3
-
4
14
µA
Vcc=10.2V
VFB(S)
Stand-by Operation FB Pin Threshold
Voltage
6-3
0.55
1.1
1.5
V
Vcc=12.2V
Minimum ON Time
1-3
0.5
0.8
1.2
µSec
-
Maximum ON Time
1-3
27.5
32.5
39
µSec
-
VSSOLP(OLP)
OLP Operation Threshold Voltage
5-3
4
4.9
5.8
V
-
ISSOLP(OLP)
OLP Operation Charging Current
5-3
-16
-11
-6
µA
-
OVP Operation Voltage
4-3
25.5
27.7
29.9
V
Vcc=0→29.0V
4-3
--
45
140
µA
4-3
6
7.2
8.5
V
TON(MIN)
Protection Operation
TON(MAX)
VCC(OVP)
ICC(H)
VCC(La.OFF)
Latch Circuit Holding Current
*5
Latch Circuit Release Voltage *5
Vcc=29.9→
VCC(OFF)-0.3V
Vcc=29.9→6V
*5 The latch circuit means a circuit operated O.V.P and O.L.P.
*6 The current ratings are based on those of the IC , and plus(+) represents sink and minas(-) represents source.
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IRIS-W6753
Electrical characteristics for MOSFET (Ta=25 deg C)
Ratings
Symbol
Definition
Terminals
VDSS
Drain-to-Source breakdown voltage
IDSS
Note
TYP
MAX
1-3
650
-
-
V
ID=300µA
Drain leakage current
1-3
-
-
300
µA
VDS=650V
RDS(ON)
On-resistance
1-3
-
-
1.65
tf
Switching time
1-3
-
-
400
nSec
Thermal resistance
-
-
-
2.0
/W
ch-F
ID=1.4A
Between channel
and internal frame
IRIS-W6753
MOS FET A.S.O. curve
IRIS-W6753
A.S.O. temperature derating coefficient curve
100
100
80
Drain current
limit by ON
resistance
Drain Current ID[A]
A.S.O. temperature derating coefficient[%]
Units
MIN
60
40
10
0.1ms
1ms
1
20
0
0
20
40
60
80
100
Internal frame temperature TF [
120
]
0.1
1
10
100
1000
Drain-to-Source Voltage VDS[V]
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IRIS-W6753
IRIS-W6753
MOSFET Ta-PD1 Curve
IR IS-W 6 753
Avalanche energy derating curve
1 00
EAS temperature derating coefficient [%]
30
Power dissipation P D1[W]
25
With infinite
heatsink
20
15
10
Without
heatsink
5
PD1=1.5[W]
80
60
40
20
0
0
20
40
60
80
100
120
140
0
160
25
Ambient temperature Ta[
]
50
75
100
12 5
C hannel tem p erature T ch [
150
]
STR-W6753
Transient thermal resistance curve
Transient thermal resistance θch-c[ /W]
10
1
0.1
0.01
0.001
1µ
10µ
100µ
1m
10m
100m
time t [sec]
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IRIS-W6753
Block Diagram
VCC
Reg&
Iconst
Start
Stop
Burst
OVP
R
Delay
Q
Burst
Control
D
DRIVE
Reg
Protection
latch
S
S/GND
FB
FB
R Q
S
Q
S
R
OSC
MaxON
OCP
BSD
BD
OCP/BD
Bottom Selector
OLP
Soft Start
Counter
SS/OLP
Pin Designation
Pin No.
Symbols
Descriptions
Functions
1
D
Drain pin
MOSFET drain
3
S/GND
Source /Ground pin
MOSFET Source / Ground
4
VCC
Power supply pin
Input of power supply for control
circuit
5
SS/OLP
Delay at Overload
/Soft Start set up Pin
Overload Protection and
Soft Start Operation Time set up
6
FB
Feedback pin
Constant Voltage Control Signal
Input, Burst(intermittent) mode
Oscillation Control
7
OCP/BD
Overcurrent Protection
Input
/ Bottom Detection Pin
Overcurrent Detection Signal Input
/Bottom Detection Signal Input
Pin Assignments
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IRIS-W6753
Case Outline
a Type Number W6753
b Lot Number
1st letter The last digit of year
2nd letter Month
1 to 9 for Jan. to Sept.,
O for Oct. N for Nov. D for Dec.
3rd & 4th letter Day
Arabic Numerals
Weight : Approx. 2.3g
Dimensions in mm
DWG.No. TG3A-2103
Material of Pin : Cu
Treatment of Pin : Ni plating + solder dip
Data and specifications subject to change without notice.
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