SDC603Z-E1 [SDC]
Current Mode PWM Controller;
| 型号： | SDC603Z-E1 |
| 厂家： | 
Shaoxing Devechip Microelectronics Co., Ltd |
| 描述： | Current Mode PWM Controller |
| 文件： | 总11页 (文件大小：389K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Datasheet
General Description
Features
SDC603 is a high-performance current mode control IC
designed for AC/DC convertor, which supplies about
continuous 12W output power at the universal AC input
range from 85V to 265V.
Built-in high voltage power transistor of 700V
High voltage start-up
Very low start-up and operating current
Low standby power consumption
Protections: OVP, UVLO, SCP, OLP and OTP
Built-in high precise current limit with temperature
compensation
12W and peak 15W output power at the universal
AC input range
15W and peoutput power at AC input 220V
Very fernal components
Package: P-8
Applications
Offline AC/DC flyback converter
Adaptor/Charger for cell and other Portable
Apparatus
Open Frame (for example, DVD, DVB)
DIP-8
Figure 1. Package Type
December, 2013 Rev. 1.2
1/11
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
www.sdc-semi.com
Datasheet
Pin Configuration
Package: DIP-8
OB
OC
1
8
VCC
GND
CT
7
6
2
3
OC
IS
FB
4
5
Figure 2. Pin Configuration
Pin Number
Pin Name
Function
1
2
OB
VCC
GND
CT
Startp current input, connecting to startup resistor
Supply voltage pin
Ground
3
4
Oscillate capacitor pin
5
FB
Feedback pin
6
IS
Cycle-by-cycle current limit, connecting a resistor to GND
Output of HV transistor, connecting to primary wind of transformer
7,8
OC
Table 1. Pin Description
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
2/11
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Datasheet
Functional Block Diagram
CT
VCC
OB
OC
OC
STC
VREF
OLP
Dmax
OSC
VU
OVP
UVP
10V
3.7V
FB
COMP
FB
1.4V
OTP
CS
COMP
PWM
0.625V
IS
GND
ure 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
SDC603 X
E1: Pb-free
G1: Halogen-free
Circuit Type
Package
DIP-8: Z
Blank: Tube
Part Number
Making ID
Package
Temperature
Packing Type
Pb-free
Halogen-free
P
Halogen-free
DIP-8
SDC603Z -E1
SDC603Z -G1
SDC603
SDC603G
Tube
-40℃~85℃
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
4/11
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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
Symbol
Value
Unit
VCC
VCB
Ip
18
-0.3~700
1000
V
V
Endurance voltage of OC collector
Peak value of switching current
Total dissipation power
mA
mW
A
PD
1000
Collector current
IC
1.8
Operating temperature
TJ
-40~150
-55~150
260
°C
°C
°C
mA
V
Storage temperature range
TSTG
TLEAD
-
Lead temperature (soldering, 10sec)
Latch-up test per JEDEC 78
200
ESD, HBM model per Mil-Std-883, Method 3015
ESD,MM model per JEDEC EIA/JESD22-A115
HBM
MM
2000
200
V
Table 2. Absolute Maximum Ratings
Recommended Operating Conditions
Parameter
Symbol
VCC
Min
4.8
55
Max
Unit
Power supply voltage, VCC
9.0
68
85
V
Oscillating frequency
fOSC
kHz
°C
Operating temperature
Ta
-40
Table 3. Recommended Operating Conditions
December, 2013 Rev. 1.2
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
5/11
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Datasheet
Electrical Characteristics(Ta=25°C, VCC =7.0V, CT=680pF, RIS=1Ω, unless otherwise specified)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Section
On-state saturation voltage drop
Output rise time
VSAT
Tr
IOC=600mA
CL=1nF
CL=1nF
-
-
-
-
-
-
-
1
V
ns
75
75
2.6
Output fall time
Tf
-
ns
HV start-up current
ISTC
1
mA
Oscillator Section
Oscillating frequency
fOSC
CT=680pF
55
-
61
-
68
1
1
-
kHz
%
△FV
Temperature Stability
Temperature Stability
VCC =4.
Ta=0°C~85°C
-
△FT
VP-P
Tf
-
-
%
Peak to peak value of oscillator
Fall time of oscillator
-
2.5
800
V
CT=680pF
-
-
ns
Feedback Section
Pull-up current
Pull-down resistance
0.35
10
-
0.45
15
0.70
20
mA
kΩ
dB
IFB
RFB
VFB=2.5V
Input impedance
PSRR
-
-
VCC =4.8V~9V
60
70
Current Sampling Section
Over current threshold voltage
IS-GND resistance
-
0.60
0.625
20
0.65
25
V
Ω
VTH_OC
15
-
ITH_OC
-
-
-
PSRR
60
70
dB
ns
Over current detection and control delay
-
-
150
250
TD
PWM Section
Maxum duty cycle
Minim duty cycle
VFB=4.0V
-
52
-
57
62
-
%
%
DMAX
DMIN
1.5
Power Current Section
Startup leakage current
Static operation current
Startup threshold voltage
Minimal operating voltage
-
-
15
2.8
9.0
3.7
50
4.0
9.4
4.0
uA
mA
V
IST
2.0
8.6
3.3
IOP
VST
VUV
VFB=0V，VCC=8V
-
-
V
December, 2013 Rev. 1.2
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Datasheet
Parameter
Symbol
Conditions
Min
1.7
Typ
2.0
Max
Unit
V
Restart voltage
-
-
2.4
VRST
Over voltage protection
9.6
10.0
10.6
V
VOV
OTP Section
TOTP
Thermal shutdown temperature
-
-
150
-
℃
Mosft Section
Collector cutoff current
V
CB=700V, IE=0
VCE=450V, IB=0
VEB=9V, IC=0
IC=0.
-
-
-
-
-
-
-
-
0.1
0.1
0.1
-
mA
mA
mA
V
ICBO
ICEO
Collector-emitter cutoff current
Collector-base cutoff current
Collector-base breakdown voltage
Collector-emitter sustain voltage
Collector-base sustain voltage
DC current gain
-
IEBO
700
450
9
VCBO
IC=1mA
-
-
V
V
-
VCEO
IE=0.1mA
VEBO
VCE=5V, IC=0.5A
IC=1A, IB=0.25A
15
-
50
hE
Collector-emitter saturation voltage
0.3
0.8
V
V
VCE_STA
VBE_STA
Base-emitter saturation voltage
IC=1A, IB=0.25A
0.8
1.2
ble 4. Electrical Characteristics
December, 2013 Rev. 1.2
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©2013 Shaoxing Devechip Microelectronics Co., Ltd.
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Datasheet
Function Description
Startup control
with it, the less FB is, the wider the cycle of the oscillator
is, until the oscillation stop.
During Startup phase, reference voltage, the oscillator
and all protection circuits are OFF. Startup current of
SDC603 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.
Power transistor Drive
During 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, SDC603
will turn into the OFF cycle. During the OFF cycle, OB is
pulled down, the transistor will shut off.
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.
Over tempure Protection
When IC’s internal temperature reaches 150°C, FB
vtage will be pulled down by internal control circuit,
the switching frequency decreases or shut off. This
protection protects the IC from over temperature.
Cooling Requirements
Layout is important for all switching regulators. To achieve
high efficiency, good regulation, and stability, a well
designed printed circuit board layout is required. The main
power loss inside IC is produced by the internal transistor,
an extra copper plane at the pin7 and pin8 help dissipate
the heat generated by losses in transistor. For a typical
application (AC input from 85V to 265V, 12W output), and
200mm2 copper plane is necessary.
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 reaed. The VCC over voltage
protection ensures IC to rate reliably.
Current limit
The output is shut off to limit the power when voltage of
IS Pieeds 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 conversion efficiency. If FB is
less than 1.4V(Typ), the cycle of the oscillator will increase
December, 2013 Rev. 1.2
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©2013 Shaoxing Devechip Microelectronics Co., Ltd.
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Datasheet
Typical Application
V+
GND
OB
OC
OC
IS
VCC
GND
CT
FB
SDC603
Figure 4. Typical Application
November, 2013 Rev. 1.1
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9/11
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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
November, 2013 Rev. 1.1
©2013 Shaoxing Devechip Microelectronics Co., Ltd.
10/11
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Datasheet
Shaoxing Devechip MicroelectronicCo., Ltd.
UUUUhttp://www.sdc-si.com/UUUU
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SDC reserves the right to mhanges, corrections, modifications or improvements, to this document, and the products and services
described herein aanytime, without notice. SDC does not assume any responsibility for use of any its products for any particular
purpose, nor does SDC assume 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.
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November, 2013 Rev. 1.1
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11/11
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