PFC Controller. SSC2005SC Datasheet

SSC2005SC Controller. Datasheet pdf. Equivalent

SSC2005SC Datasheet
Recommendation SSC2005SC Datasheet
Part SSC2005SC
Description PFC Controller
Feature SSC2005SC; Critical Conduction Mode PFC Control IC SSC2005SC General Description SSC2005SC is a Critical Condu.
Manufacture Sanken
Datasheet
Download SSC2005SC Datasheet




Sanken SSC2005SC
Critical Conduction Mode PFC Control IC
SSC2005SC
General Description
SSC2005SC is a Critical Conduction Mode (CRM)
control IC for power factor correction (PFC).
Since no input voltage sensing and no auxiliary
winding for inductor current detection are required, the
IC allows the realization of low standby power and the
low number of external components. The product
achieves high cost-performance and high efficiency PFC
converter system.
Features and Benefits
Inductor Current Detection
(No auxiliary winding required)
Low Standby Power
(No input voltage sensing required)
Minimum Off-time Limitation Function to restrict the
Rise of Operation Frequency
High Accuracy Overcurrent detection: 0.60 V ± 5 %
Protections
Overcurrent Protection (OCP): Pulse-by-pulse
Overvoltage Protection (OVP): Auto restart
FB Pin Undervoltage Protection (FB_UVP): Auto
restart
Thermal Shutdown Protection with hysteresis (TSD):
Auto restart
Typical Application Circuit
VAC
BR1
DBYP
L1
D1
D2 R2
C1
Q1
C2
R1 R3
RCS
VOUT
LINE
GND
R4
DZCS
C5
C
External power
supply
U1
CS
5
GND
6
OUT
7
RDLY
4
RT 3
COMP
2
8 VCC
FB 1
SSC2005SC
C6
RVS1
RVS2
C4
C3 RRT
RS
CP
CS
RDLY
TC_SSC2005SC_1_R2
Package
SOIC8
Not to scale
FB 1
COMP 2
RT 3
RDLY 4
8 VCC
7 OUT
6 GND
5 CS
Electrical Characteristics
VCC Pin Absolute Maximum Ratings, VCC = 28 V
OUT Pin Source Current, IOUT(SRC) = −500 mA
OUT Pin Sink Current, IOUT(SNK) = 1000 mA
Applications
PFC circuit up to 200 W of output power such as:
AC/DC power supply
Digital appliances (large size LCD television and so
forth).
OA equipment (Computer, Server, Monitor, and so
forth).
Communication facilities
SSC2005SC-DS Rev.1.1
SANKEN ELECTRIC CO.,LTD.
1
Feb. 06, 2015
http://www.sanken-ele.co.jp/en/



Sanken SSC2005SC
SSC2005SC
CONTENTS
General Description ------------------------------------------------------------------------ 1
1. Absolute Maximum Ratings--------------------------------------------------------- 3
2. Electrical Characteristics ------------------------------------------------------------ 3
3. Functional Block Diagram----------------------------------------------------------- 5
4. Pin Configuration Definitions------------------------------------------------------- 5
5. Typical Application Circuit --------------------------------------------------------- 6
6. Package Outline ------------------------------------------------------------------------ 7
7. Marking Diagram --------------------------------------------------------------------- 7
8. Operational Description-------------------------------------------------------------- 8
8.1 Critical Conduction Mode: CRM ----------------------------------------- 8
8.2 Startup Operation ------------------------------------------------------------ 9
8.3 Restart Circuit ---------------------------------------------------------------- 9
8.4 Maximum On-time Setting ------------------------------------------------- 9
8.5 Zero Current Detection
and Bottom-on Timing (Delay Time) Setting ------------------------ 10
8.6 Minimum Off-time Limit Function -------------------------------------- 11
8.7 Overvoltage Protection (OVP) -------------------------------------------- 11
8.8 FB pin Under Voltage Protection (FB_UVP) -------------------------- 11
8.9 Overcurrent Protection (OCP) ------------------------------------------- 12
9. Design Notes --------------------------------------------------------------------------- 12
9.1 Inductor Setup --------------------------------------------------------------- 12
9.2 External Components------------------------------------------------------- 13
9.3 PCB Trace Layout and Component Placement ----------------------- 15
10. Reference Design of Power Supply ----------------------------------------------- 17
OPERATING PRECAUTIONS -------------------------------------------------------- 18
IMPORTANT NOTES ------------------------------------------------------------------- 19
SSC2005SC-DS Rev.1.1
SANKEN ELECTRIC CO.,LTD.
2
Feb. 06, 2015



Sanken SSC2005SC
SSC2005SC
1. Absolute Maximum Ratings
For additional details, refer to the datasheet.
The polarity value for current specifies a sink as “+”, and a source as “−”, referencing the IC.
Unless specifically noted TA = 25 °C
Parameter
Symbol
Conditions
Pins
Rating
Unit
VCC Pin Voltage
OUT Pin Source Current
OUT Pin Sink Current
FB Pin Voltage
COMP Pin Current
RT Pin Current
RDLY Pin Current
CS Pin Voltage
Allowable Power Dissipation
Operating Ambient Temperature
Storage Temperature
Junction Temperature
VCC
IOUT(SRC)
IOUT(SNK)
VFB
ICOMP
IRT
IRDLY
VCS
PD
TOP
Tstg
Tj
86
28
V
76
500
mA
76
1000
mA
16
0.3 to 5
V
2 6 200 to 200 µA
3 6 500 to 0
µA
4 6 500 to 0
µA
56
5 to 0.3
V
0.5
W
40 to 110
°C
40 to 150
°C
150
°C
Notes
2. Electrical Characteristics
For additional details, refer to the datasheet.
The polarity value for current specifies a sink as +, and a source as “−”, referencing the IC.
Unless specifically noted, TA = 25 °C, VCC = 14 V, VCS = 0.1 V
Parameter
Symbol Conditions Pins Min.
Typ.
Power Supply Operation
Operation Start Voltage
Operation Stop Voltage
Operation Voltage Hysteresis
Circuit Current in Operation
Circuit Current in Non-Operation
Oscillation Operation
Maximum On-Time
Minimum Off-Time
RDLY Pin Voltage
RT Pin Voltage
Feedback Control Voltage
Feedback Line Regulation
FB Pin Bias Current
Error Amplifier
Transconductance Gain
VCC(ON)
VCC(OFF)
VCC(HYS)
ICC(ON)
ICC(OFF)
VCC = 9.5 V
tON(MAX)
tOFF(MIN)
VRDLY
VRT
VFB
VFB(LR)
IFB
V FB = 1.5 V
RRT = 22 kΩ
RDRY = 22 kΩ
gm
8 6 10.5
8 6 8.2
8 6 1.4
8 6 2.0
8 6 40
76
76
46
36
16
16
16
16
26
15
1.35
1.3
1.3
2.46
8
3.2
60
12.0
9.5
2.5
3.1
80
23
1.95
1.5
1.5
2.50
1
2.0
103
Max. Unit
13.5
V
11.0
V
3.1
V
4.4
mA
160
µA
33
µs
2.80
µs
1.7
V
1.7
V
2.54
V
12
mV
1.0 µA
150
µS
SSC2005SC-DS Rev.1.1
SANKEN ELECTRIC CO.,LTD.
3
Feb. 06, 2015





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