SDC602Z-G1 [SDC]
Current Mode PWM Controller;型号: | SDC602Z-G1 |
厂家: | Shaoxing Devechip Microelectronics Co., Ltd |
描述: | Current Mode PWM Controller |
文件: | 总11页 (文件大小:367K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Datasheet
General Description
Features
SDC602 is a high-performance current mode control IC
designed for AC/DC convertor, which supplies about
continuous 5W output power at the universal AC input
range from 85V to 265V.
Built-in high voltage power transistor of 700V
Cycle-by-cycle current limit
Very low power consumption under no load
Internal slope compensation and feedback
compensation
Over load protection
Built-in high precise current limit with temperature
compensation
Over temperature protection
Low startup erating current
VCC ovtage clamp
5W outppower at the universal AC input range,
8W output power at AC input 220V
Package: DIP-8
Applications
Offline AC/DC flyback converter
Adaptor/Charger for cell and other portable
Apparatus
DIP-8
Figure 1. Package Type
December, 2013 Rev. 1.2
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©2013 Shaoxing Devechip Microelectronics Co., Ltd.
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Datasheet
Pin Configuration
Package: DIP-8
OB
OC
1
8
NC
GND
FB
7
6
2
3
OC
NC
VCC
4
5
Figure 2. Pin Configuration
Pin Number
Pin Name
OB
Function
1
2
Startup current input, connecting to startup resistor
NC
No connection
3
4
5
6
GND
FB
VCC
NC
Ground
Feedback pin
Supply voltage
No connection
7,8
OC
Output of HV transistor, connecting to primary wind of transformer
Table 1. Pin Configuration
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
2/11
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Datasheet
Functional Block Diagram
VCC
OB
OC
OC
STC
VREF
Dmax
OSC
OLP
VU
OVP
UVP
10V
3.5V
FB
COMP
FB
2.7V
OTP
CS
COMP
PWM
0.6V
GND
Figure 3. Functional Block Diagram
December, 2013 Rev. 1.2
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©2013 Shaoxing Devechip Microelectronics Co., Ltd.
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Datasheet
Ordering Information
-
X
X
SDC602 X
E1: Pb-free
G1: Halogen-free
Circuit Type
Package
DIP-8: Z
Blank: Tube
Part Number
Mking ID
Package
Temperature
Packing Type
Pb-free
Halogen-free
Pb-free
SD
alogen-free
SDC602G
DIP-8
SDC602Z -E1
SDC602Z -G1
Tube
-40℃~85℃
December, 2013 Rev. 1.2
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Datasheet
Absolute Maximum Ratings (NOTE: Stresses greater than those listed under Absolute Maximum Ratings may cause
permanent damage to the device.)
Parameter
Power supply voltage VCC
Collector current
Symbol
VCC
IC
Value
18
1.5
Unit
V
A
Endurance voltage of OC collector
Peak value of switching current
Total dissipation power
Operating Junction Temperature
Storage temperature range
Lead temperature (soldering, 10sec)
Latch-up test per JEDEC 78
ESD, HBM model per Mil-Std-883, Method 3015
ESD, MM model per JEDEC EIA/JESD22-A115
V
VCB
Ip
PD
TJ
TSTG
TLEAD
-0.3~700
300
1000
-40~150
-55~150
260
0
2000
200
mA
mW
°C
°C
°C
mA
V
V
-
HBM
MM
Table 2. Absolute Maximum Ratings
Recommended Operating Conditions
Symbol
VCC
Parameter
Power supply voltage, VCC
Operating temperature
Min
4.8
-40
Max
9.0
85
Unit
V
°C
Ta
Table 3. Recommended Operating Conditions
December, 2013 Rev. 1.2
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Datasheet
Electrical Characteristics (Ta=25°C, VCC =7.0V, unless otherwise specified)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Section
On-state saturation voltage drop
Output rise time
I
OC=270mA
CL=1nF
CL=1nF
-
-
-
-
-
-
-
1
V
ns
VSAT
75
75
2.6
Tr
Output fall time
-
ns
Tf
HV start-up current
1
mA
ISTC
Oscillator Section
fOSC
Oscillation frequency
Temperature Stability
Temperature Stability
-
55
-
61
-
68
1
kHz
%
VCC =V
Ta=0°C~85°C
△FV
△FT
-
-
1
%
Feedback Section
Pull-up current
Pull-down resistance
VFB=2.5V
-
0.40
10
-
0.55
15
0.70
20
mA
kΩ
dB
IF
RFB
Input impedance
PSRR
PSRR
VCC=4.8V~9V
60
70
Current Sampling Section
Over current threshold voltage
Current limit
-
-
-
-
0.55
0.60
0.27
60
0.65
0.29
70
V
A
VTH_OC
ITH_OC
0.25
PSRR
PSRR
-
-
dB
ns
Over current detection and control delay
150
250
TD
PWM Section
Maximum duty cycle
Minimum duty cycle
VFB=4.0V
-
52
-
57
62
-
%
%
DMAX
DMIN
1.5
Power Current Section
Startleakage current
Static operation current
Startup threshold voltage
Minimal operating voltage
Restart voltage
-
-
15
2.8
9.0
3.5
2.0
10
50
4.0
9.4
3.8
2.4
10.6
uA
mA
V
IST
2.0
8.6
3.2
1.7
9.6
IOP
VST
VUV
VRST
VOV
VFB=0V,VCC=8V
-
-
-
-
V
V
Over voltage protection
V
December, 2013 Rev. 1.2
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Datasheet
Parameter
Symbol
OTP Section
TOTP
Conditions
Min
Typ
Max
Unit
Thermal shutdown temperature
-
-
150
-
℃
BJT Section
ICBO
Collector cutoff current
V
CB=700V, IE=0
-
-
-
0.1
0.1
0.1
-
mA
mA
mA
V
Collector-emitter cutoff current
Collector-base cutoff current
Collector-base breakdown voltage
Collector-emitter sustain voltage
Collector-base sustain voltage
DC current gain
VCE=450V, IB=0
VEB=9V, IC=0
IC=0.1mA
-
ICEO
-
-
IEBO
700
400
9
-
-
VCBO
IC=1mA
-
V
VCEO
IE=0
-
-
V
VEBO
VCE=5V, IC=0.5A
IC=1A, IB=0.25A
IC=1A, IB=0.25A
15
-
30
0.9
1.2
-
hFE
Collector-emitter saturation voltage
Base-emitter saturation voltage
0.3
0.9
V
VCE_STA
VB_STA
V
Table 4. Electrical Characteristics
December, 2013 Rev. 1.2
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Datasheet
Function Description
Startup control
Current limit
During Startup phase, reference voltage, the oscillator
and all protection circuits are OFF. Startup current of
SDC602 is designed to be very low so that VCC could be
charged up above UVLO threshold level and device starts
up quickly. A large startup resistor can therefore be used
to minimize the power loss yet achieve a reliable startup
in application.
The output is shut off to limit the power when volage of
IS Pin exceeds Current sense threshold voltage.
Green mode control
Under no-load and light-load condition, the switching
frequency internally decreases to lower the switching
power loss and improve the onversion efficiency. If FB is
less than 2.7V(Typcycle of the oscillator will increase
with it, the less FB he wider the cycle of the oscillator
is, until the ion stop.
PWM control
The peak current (sensed on the IS pin) is set by the
voltage on FB pin. By comparing the voltage on FB pin and
the IS ramp voltage, the duty-cycle of the PWM
modulator is thus adjusted to provide the necessary load
current at the desired output voltage. FB can be
controlled by internal control circuit and external
feedback circuit.
Power transistor drive
Dng the ON cycle, OB pin supplies base current for the
power transistor, OE pulls down the emitter of the power
transistor to IS, and OB is adaptive to the IS current. If the
current of IS exceeds the specified current of FB, SDC602
will turn into the OFF cycle. During the OFF cycle, OB is
pulled down, the power transistor will shut off.
VCC over voltage protection
VCC over voltage protection circuit is ined into IC.
When VCC voltage reaches 9.8V(TYP), FB voltage is pulled
down via internal control circuit, then the PWM switching
is shut off. When VCC voltage goes down below 9.8V(TYP),
the switching is reacted. The VCC over voltage
protection ensures IC tate reliably.
Over temperature protection
When IC’s internal temperature reaches 150°C, FB
voltage will be pulled down by internal control circuit,
the switching frequency decreases or shut off. This
protection protects the IC from over temperature.
December, 2013 Rev. 1.2
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Datasheet
Typical Application
V+
GND
OC
OB
NC
OC
NC
GND
FB
VCC
SDC602
igure 4. Typical Application
December, 2013 Rev. 1.2
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Datasheet
Package Dimension
DIP-8
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A2
B
3.710
0.510
3.200
0.380
4.310
0.146
0.020
0.126
0.015
0.170
3.600
0.570
0.142
0.022
B1
C
1.524(BSC)
2.540(BSC)
0.060(BSC)
0.100(BSC)
0.204
9.000
6.200
7.320
0.360
9.400
6.600
7.920
0.008
0.354
0.244
0.288
0.014
0.370
0.260
0.312
D
E
E1
e
L
3.000
8.400
3.600
9.000
0.118
0.331
0.142
0.354
E2
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
10/11
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Datasheet
Shaoxing Devechip MicroelectronCo., Ltd.
UUUhttp://www.sdc-semi.com/UUU
IMPORTANT NOTICE
Information in this document is provided solely in connection with Shaoxing Devechip Microelectronics Co., Ltd. (abbr. SDC) products.
SDC reserves the right to hanges, corrections, modifications or improvements, to this document, and the products and services
described herein at anytimthout notice. SDC does not assume any responsibility for use of any its products for any particular
purpose, nor does SDC asume any liability arising out of the application or use of any its products or circuits. SDC does not convey
any license under its patent rights or other rights nor the rights of others.
© 2013 Devechip Microelectronics - All rights reserved
Contact
Headquarters of Shaoxing
Address: Tian Mu Road, No13,
Shaoxing city, Zhejiang province, China
Zip code: 312000
Shenzhen Branch
Address: 22A, Shangbu building, Nan Yuan Road, No.68,
Futian District, Shenzhen city, Guangdong province, China
Zip code: 518031
Tel: (86) 0575-8861 6750
Tel: (86) 0755-8366 1155
Fax: (86) 0575-8862 2882
Fax: (86) 0755-8301 8528
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
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