str-y6476 ds en

Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
◆General Descriptions
◆Package
The STR-Y6476 is power IC for quasi-resonant
switching type power supplies, incorporating a power
MOSFET and a controller IC.
The product is automatically switched to the quasi
resonant operation, one bottom skip quasi resonant
operation and two bottom skip operation in normal
operation, and to the burst oscillation operation in light
load. That realizes the low standby power and a power
supply system with high cost performance, low external
part count can be easily composed.
Package name: TO-220F-7L (FMS207)
◆Features
 Multi operation mode
The operation mode switching with four steps according
to load conditions achieves the optimal high efficiency
and low noise power supply systems across the full range
of loads.
 Current mode control method
 The built-in startup circuit reduces the power
consumption
 Auto burst oscillation operation reduces dissipation.
Input power PIN ≤ 0.1W at no load
 Standby input compensation
 Overcurrent protection with AC input compensation
function
 Built-in soft start function
 Built-in maximum on-time limitation circuit
 Built-in leading edge blanking function
 Avalanche energy guaranteed; two-chip structure (enabling
the simplification of surge absorbing circuit)
 Protection functions
Overcurrent protection (OCP) with input compensation
function: pulse by pulse basis, low dependence on input
voltage
Overload protection (OLP); latched shutdown or auto
restart
Overvoltage protection (OVP); latched shutdown
◆Application
Switching Power Supplies for
 Digital appliance such as BD/DVD recorder, FPD TVs,
etc.
 OA equipments such as printer
 Home appliance (white goods)
 Industry Machines
 Communication Devices
◆Specification
MOSFET 850V, 1.3Ω(MAX)
◆Typical application circuit
Sanken Electric Co., Ltd.
1/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Absolute maximum ratings
 The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
 Unless otherwise specified, TA = 25 °C
Item
Pin
Symbol
Ratings
Unit
Remark
1−2
IDpeak(1)
13.2
A
Single pulse
Maximum Switching Current
1−2
IDMAX(2)
13.2
A
Ta= −20 to +125°C
Avalanche Energy
1−2
EAS(3)
330
mJ
Control Power Supply Voltage
3−2
VCC
32
V
Startup Circuit pin Voltage
1−2
VSTARTUP
−1.0 to VDSS
V
ADJ pin Inflowing Current
7−2
IADJ
3.0
mA
FB pin Inflowing Current
4−2
IFB
8.0
mA
BD pin Inflowing Current
5−2
IBDIN
2.0
mA
BD pin Inflowing Current
5−2
IBDOUT
−2.0
mA
OCP pin Voltage
6−2
VOCP
−1.5 to +2.0
V
MOS FET Power Dissipation
1−2
PD1(4)
29
W
By infinite radiator
1.3
W
No radiator
Control Power Dissipation (MIC)
―
PD2
0.8
W
Operating Inner Flame Temperature
―
TF
−20 to +115
°C
Operating Ambient Temperature
―
Top
−20 to +115
°C
Storage Temperature
―
Tstg
−40 to +125
°C
Drain Current
Single pulse
VDD=99V, L=20mH
ILpeak=5.4A
Refer to recommended
operating temperature
Channel Temperature
―
Tch
+150
°C
Refer to MOS FET A.S.O. curve
(2)
Regarding the maximum switching current
The maximum switching current is drain current IC determined by inner drive voltage and MOS FET Vth.
(3)
Refer to MOS FET Tch-EAS curve
(4)
Refer to MOS FET Ta-PD1 curve
(1)
Sanken Electric Co., Ltd.
2/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Electrical characteristics
Electrical characteristics for control part
 The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
 Unless otherwise specified, TA = 25 °C, VCC = 20V
Characteristic
Pins
Symbol
Operation Start Voltage
3 − 2
Operation Stop voltage
Rating
Unit
MIN
TYP
MAX
VCC(ON)
14.4
16.2
18.4
V
3 − 2
VCC(OFF)
9.0
10.0
11.3
V
Circuit Current in Operation
3 − 2
ICC(ON)
―
3.5
5.5
mA
Circuit Current in Non-Operation
3 − 2
ICC(OFF)
―
10
50
µA
Startup Circuit Operation Voltage
1 − 2
VSTART(ON)
55
82
100
V
Startup Current
3 − 2
ICC(STARTUP)
−2.4
−1.4
−0.5
mA
Startup Current after OLP Operation
3 − 2
ICC(STARTOLP)
−1.10
−0.50
−0.15
mA
Oscillation Frequency
1 − 2
fOSC
17.5
21.0
25.0
kHz
Soft Start Operation Stop Voltage
7 − 2
VADJ(SS)
2.0
2.3
2.6
V
Soft Start Operation Charging Current
7 − 2
IADJ(SS)
−148
−110
−71
µA
Power Off Threshold Voltage
7 − 2
VADJ(OFF)
8.2
9.4
10.8
V
6 − 2
VOCP(BS1)
−0.720
−0.668
−0.605
V
6 − 2
VOCP(BS2)
−0.485
−0.435
−0.381
V
6 − 2
VOCP(BS3)
−0.205
−0.145
−0.085
V
7 − 2
VADJ(BS)
3.8
4.3
4.8
V
Bottom-Skip Detection Bias Current
7 − 2
IADJ(BS)
−27
−20
−13
µA
BD Pin Maximum Clamp Voltage
5 − 2
VBD(HC)
―
6.3
―
V
BD Pin Minimum Clamp Voltage
Quasi-Resonant Operation Threshold
Voltage 1
Quasi-Resonant Operation Threshold
Voltage 2
Maximum Feedback Current
5 − 2
VBD(LC)
―
−0.075
―
V
5 − 2
VBD(TH1)
0.12
0.31
0.60
V
5 − 2
VBD(TH2)
0.01
0.15
0.32
V
4 − 2
IFB(MAX)
−315
−225
−135
µA
Standby State Detection Voltage
4 − 2
VFB(STBIN)
1.40
1.63
1.85
V
Standby State Start Voltage
7 − 2
VADJ(STB)
5.7
6.2
6.8
V
Standby Operation Voltage
4 − 2
VFB(STBOP)
0.80
1.00
1.25
V
Minimum ON-time (in steady state)
Minimum ON-time (in input
compensation)
1 − 2
tONL(MIN)
1.04
1.60
2.16
µs
1 − 2
tONH(MIN)
0.57
0.95
1.33
µs
Power Supply Startup Operation
Normal Operation
Bottom-Skip Operation Threshold
Voltage 1
Bottom-Skip Operation Threshold
Voltage 2
Bottom-Skip Operation Threshold
Voltage 3
Bottom-Skip Start Voltage
Standby Operation
Sanken Electric Co., Ltd.
3/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Characteristic
Pins
Symbol
Maximum ON –time
1 − 2
Leading Edge Blanking Time
Overcurrent Detection Threshold Voltage (in
steady state)
Overcurrent Detection Threshold Voltage (in
input compensation)
OCP Pin Leakage Current
Input Compensation Detection Threshold
Current 1
Input Compensation Detection Threshold
Current 2
OLP Bias Current
Rating
Unit
MIN
TYP
MAX
tON(MAX)
31
36
41
µs
1 − 2
tON(LEB)
―
210
―
ns
6 − 2
VOCP(H)
−0.975
−0.930
−0.875
V
6 − 2
VOCP(L)
−0.904
−0.780
−0.656
V
6 − 2
IOCP(O)
−260
−130
−40
µA
5 − 2
IBD(TH1)
−575
−500
−425
µA
5 − 2
IBD(TH2)
−565
−450
−375
µA
4 − 2
IFB(OLP)
−27
−20
−13
µA
OLP Auto Restart Threshold Voltage
4 − 2
VFB(OLPAUTO)
6.3
6.7
7.3
V
OLP Latched Shutoff Bias Current
4 − 2
IFB(OLPLa.OFF)
−1.5
−1.0
−0.5
mA
OLP Latched Shutoff Threshold Voltage
4 − 2
VFB(OLPLa.OFF)
8.6
9.6
10.2
V
26.0
28.5
31.0
V
6.2
7.5
8.9
V
4.90
5.45
6.00
V
Protection Operation
OVP Operation Power Supply Voltage
VCC(OVP)
3 − 2
Latch Circuit Release Power Supply Voltage
VCC(La.OFF)
3 − 2
*
Maximum Voltage in Feedback Control
VFB(MAX)
4 − 2
* The latch circuit means a circuit operated by OVP or OLP.
Electrical characteristics for MOSFET part
 Unless otherwise specified, TA = 25 °C,
Characteristic
Pins
Symbol
Voltage between Drain and Source
1 − 2
Drain Leakage Current
Rating
Unit
MIN
TYP
MAX
VDSS
850
―
―
V
1 − 2
IDSS
―
―
300
µA
ON Resistance
1 − 2
RDS(ON)
―
―
1.3
Ω
Switching Time
1 − 2
tf
―
―
500
ns
―
θch-F
―
1.0
1.5
°C/W
Thermal Resistance*
*Between Channel and inner frame
Sanken Electric Co., Ltd.
4/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
STR-Y6476
A.S.O.温度ディレーティング係数曲線
STR-Y6476
MOS FET A.S.O. 曲線 Ta=25℃
シングルパルス
curve
A.S.O. temperature derating coefficient curve
Single pulse
100
A.S.O.温度ディレーティング係数[%]
A.S.O. temperature derating coefficient
100
ドレイン電流 I D〔A〕
Drain Current
80
60
40
0.1ms
10
オン 抵抗によ る
ドレイ ン 電流限界
Drain current limt
by ON resistance
1
20
ご使用に際して左図よ り温度ディレーティン グ係数を 求め、
ASOの温度ディレーティン グを 行って下さい。
ASO temperature derating shall be made by obtaining ASO
Coeffcient from the left curve in your use.
0
0
25
50
75
115
0.1
100 125 150
10
100
ドレイン・ソース間電圧
Drain-to-Source Voltage
内部フレーム温度 TF [℃]
Internal frame temperature
STR-Y6476
M OSFET Ta-PD1 曲線
STR-Y6476
アバランシェ・エネルギ耐量
ディレーティング曲線
Avalanche energy derating curve
curve
30
29
100
無限大放熱器付き
With infinite heat sink
EAS温度ディレーティング係数[%]
EAS temperature derating coefficient
Power dissipation
25
許容損失 PD1 〔W〕
1 ms
20
15
10
放熱器なし
Without heat sink
5
60
40
20
0
1.3
0
0
80
25
50
75
100
115
125
25
150
50
75
100
125
チャネル温度Tch [℃]
Channel temperature
周囲温度 Ta〔℃〕
Ambient temperature
Sanken Electric Co., Ltd.
5/11
150
1000
VDS〔V〕
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
STR-Y6476 過渡熱抵抗曲線
STR-Y6476 Transient thermal resistance curve
過渡熱抵抗θ ch-C [℃/W]
Transient thermal resistance
10
1
0.1
0.01
0.001
0.000001
0.00001
0.0001
0.001
時間 t [s]
Time
Sanken Electric Co., Ltd.
6/11
0.01
0.1
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Black Diagram
D/Startup
Startup
3
Vcc
UVLO
1
DRV
Reg/Iconst
S/GND
Latch
Logic
OSC
ADJ
7
FB
4
FB/STB
OCP
OCP
BD
ADJ/SS
2
BD
6
5
Pin function description
Pin No.
Symbol
1
D/Startup
2
S/GND
3
Name
Function
Drain / Startup circuit input pin
MOSFET drain and startup circuit input
Source/ Ground pin
MOSFET source and ground
VCC
Power Supply pin
4
FB
Feedback pin
5
BD
Bottom detection/ Input
compensation detection pin
6
OCP
Overcurrent protection input pin
7
ADJ
Adjust pin
Input for power supply for control circuit
Input for Constant voltage control signal/
Standby control/ Over load detection signal
Input for bottom detection signal/ Input
compensation detection signal
Input for Overcurrent detection signal/
Bottom skip signal detection signal
Soft start operation/ Delay time setting of
bottom skip / Input for remote ON/OFF
signal
Sanken Electric Co., Ltd.
7/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Typical Application Circuit
Sanken Electric Co., Ltd.
8/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Package
リードフォーミング
Lead
forming
4.2 ±0.2
φ3.2±0.2
15±0.3
Gate
burr
ゲートバリ
2.8±0.2
0.5
10±0.2
No.3001
STR
a
2.6±0.1
(根元寸法)
between roots
R-end
(5.4)
R-end
5×P1.17±0.15
=5.85±0.15
(根元寸法)
between roots
2±0.15
(根元寸法)
between
roots
3-(R1)
(5.4)
+0.2
7-0.55-0.1
10.4±0.5
7-0.62±0.15
5±0.5
5±0.5
b
+0.2
0.45-0.1
2.54±0.6
(先端寸法)
between
tips
5.08±0.6
(先端寸法)
between
tips
0.5
0.5 0.5
平面状態図
Planar
state
1
2 3 4 5 6 7
品名標示
a.a.Part
numberY6476Y6476
b.b.Lot
number
ロット番号
Pin material: Cu
端子の材質: Cu
Pin treatment: Ni plating and
solder dip
端子の処理:
Niメッキ+半田ディップ
Product weight (approximate):
2.3g
製品重量: 約2.2g
第1文字
注記 Note
Note
部は高さ0.3maxのゲートバリ発生個所をしめす。
―-― part shows the point gate burr (height 0.3 max) occurred
単位:
mm
Dimensions in millimeters
西暦年号下一桁
1st letter: The Last digit of year
第2文字
2nd letter:
Month 製造月
1~9月
Jan. to Sep.
Arabicアラビア数字
number
10月
O
Oct.
O
11月
N
Nov.
12月N
D
Dec. 第3、4文字
D
製造日
01~31
アラビア数字
th
3rd & 4第5文字
letter: day弊社管理記号
01-31 Arabic numbers
th
5 letter: Sanken management symbol
Sanken Electric Co., Ltd.
9/11
0.5
側面状態図
Side
view
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
OPERATING PRECAUTIONS
In the case that you use Sanken products or design your products by using Sanken products, the reliability largely depends
on the degree of derating to be made to the rated values. Derating may be interpreted as a case that an operation range is set
by derating the load from each rated value or surge voltage or noise is considered for derating in order to assure or improve
the reliability. In general, derating factors include electric stresses such as electric voltage, electric current, electric power etc.,
environmental stresses such as ambient temperature, humidity etc. and thermal stress caused due to self-heating of
semiconductor products. For these stresses, instantaneous values, maximum values and minimum values must be taken into
consideration. In addition, it should be noted that since power devices or IC’s including power devices have large self-heating
value, the degree of derating of junction temperature affects the reliability significantly.
Because reliability can be affected adversely by improper storage environments and handling methods, please observe the
following cautions.
Cautions for Storage
 Ensure that storage conditions comply with the standard temperature (5 to 35°C) and the standard relative humidity
(around 40 to 75%); avoid storage locations that experience extreme changes in temperature or humidity.
 Avoid locations where dust or harmful gases are present and avoid direct sunlight.
 Reinspect for rust on leads and solderability of the products that have been stored for a long time.
Cautions for Testing and Handling
When tests are carried out during inspection testing and other standard test periods, protect the products from power surges
from the testing device, shorts between the product pins, and wrong connections. Ensure all test parameters are within the
ratings specified by Sanken for the products.
Remarks About Using Silicone Grease with a Heatsink
 When silicone grease is used in mounting the products on a heatsink, it shall be applied evenly and thinly. If more
silicone grease than required is applied, it may produce excess stress.
 Volatile-type silicone greases may crack after long periods of time, resulting in reduced heat radiation effect. Silicone
greases with low consistency (hard grease) may cause cracks in the mold resin when screwing the products to a heatsink.
Our recommended silicone greases for heat radiation purposes, which will not cause any adverse effect on the product
life, are indicated below:
Type
Suppliers
G746
Shin-Etsu Chemical Co., Ltd.
YG6260 Momentive Performance Materials Inc.
SC102 Dow Corning Toray Co., Ltd.
Cautions for Mounting to a Heatsink
 When the flatness around the screw hole is insufficient, such as when mounting the products to a heatsink that has an
extruded (burred) screw hole, the products can be damaged, even with a lower than recommended screw torque. For
mounting the products, the mounting surface flatness should be 0.05mm or less.
 Please select suitable screws for the product shape. Do not use a flat-head machine screw because of the stress to the
products. Self-tapping screws are not recommended. When using self-tapping screws, the screw may enter the hole
diagonally, not vertically, depending on the conditions of hole before threading or the work situation. That may stress the
products and may cause failures.
 Recommended screw torque: 0.588 to 0.785 N・m (6 to 8 kgf・cm).
 For tightening screws, if a tightening tool (such as a driver) hits the products, the package may crack, and internal stress
fractures may occur, which shorten the lifetime of the electrical elements and can cause catastrophic failure. Tightening
with an air driver makes a substantial impact. In addition, a screw torque higher than the set torque can be applied and
the package may be damaged. Therefore, an electric driver is recommended.
When the package is tightened at two or more places, first pre-tighten with a lower torque at all places, then tighten with
the specified torque. When using a power driver, torque control is mandatory.
Soldering
 When soldering the products, please be sure to minimize the working time, within the following limits:
• 260 ± 5 °C 10 ± 1 s (Flow, 2 times)
• 380 ± 10 °C 3.5 ± 0.5 s (Soldering iron, 1 time)
 Soldering should be at a distance of at least 1.5 mm from the body of the products.
Sanken Electric Co., Ltd.
10/11
Power IC for Quasi-Resonant Type Switching Power Supply
with High Efficiency, Low Noise and Low Standby Power in Full Load Range
STR-Y6476
Sep, 2013
Electrostatic Discharge
 When handling the products, the operator must be grounded. Grounded wrist straps worn should have at least 1MΩ of
resistance from the operator to ground to prevent shock hazard, and it should be placed near the operator.
 Workbenches where the products are handled should be grounded and be provided with conductive table and floor mats.
 When using measuring equipment such as a curve tracer, the equipment should be grounded.
 When soldering the products, the head of soldering irons or the solder bath must be grounded in order to prevent leak
voltages generated by them from being applied to the products.
 The products should always be stored and transported in Sanken shipping containers or conductive containers, or be
wrapped in aluminum foil.
IMPORTANT NOTES
 The contents in this document are subject to changes, for improvement and other purposes, without notice. Make sure
that this is the latest revision of the document before use.
 Application and operation examples described in this document are quoted for the sole purpose of reference for the use
of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights,
intellectual property rights or any other rights of Sanken or any third party which may result from its use. Unless
otherwise agreed in writing by Sanken, Sanken makes no warranties of any kind, whether express or implied, as to the
products, including product merchantability, and fitness for a particular purpose and special environment, and the
information, including its accuracy, usefulness, and reliability, included in this document.
 Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of
semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at their own risk,
preventative measures including safety design of the equipment or systems against any possible injury, death, fires or
damages to the society due to device failure or malfunction.
 Sanken products listed in this document are designed and intended for the use as components in general purpose
electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring
equipment, etc.).
When considering the use of Sanken products in the applications where higher reliability is required (transportation
equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various safety
devices, etc.), and whenever long life expectancy is required even in general purpose electronic equipment or apparatus,
please contact your nearest Sanken sales representative to discuss, prior to the use of the products herein.
The use of Sanken products without the written consent of Sanken in the applications where extremely high reliability is
required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly prohibited.
 When using the products specified herein by either (i) combining other products or materials therewith or (ii) physically,
chemically or otherwise processing or treating the products, please duly consider all possible risks that may result from
all such uses in advance and proceed therewith at your own responsibility.
 Anti radioactive ray design is not considered for the products listed herein.
 Sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out of
Sanken’s distribution network.
 The contents in this document must not be transcribed or copied without Sanken’s written consent.
Sanken Electric Co., Ltd.
11/11