SG6561D System General Corporation, SG6561D Datasheet

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SG6561D

Manufacturer Part Number
SG6561D
Description
Power Factor Controller
Manufacturer
System General Corporation
Datasheet

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Part Number:
SG6561D
Manufacturer:
MOT
Quantity:
6 270
Power Factor Controller
FEATURES
APPLICATIONS
TYPICAL APPLICATION
©System General Corp.
Version 1.0 (IRO33.0006.B2)
Boundary Mode PFC Controller
Low Input Current THD
Controlled On-Time PWM
Zero-Current Detection
Cycle-by-Cycle Current Limiting
Leading-Edge Blanking instead of RC Filtering
Fast Current Sense Propagation Delay
Low Start-Up Current (20uA)
Low Operating Current (4.5mA)
Feedback Open Loop Protection
Programmable Maximum On-Time (MOT)
Output Over-Voltage Clamping Protection
Clamped Gate Output Voltage 17V
Few External Components Required
Pin Compatible with the L6561
Electronic Lamp Ballasts
AC-DC Switching Mode Power Converters
VAC
BD1
C1
C2
R1
D2
MOT
V
C5
D3
CC
RI
ZCD
R2
SG6561
COMP
GND
- 1 -
C3
T1
INV
DESCRIPTION
boundary mode IC intended for controlling PFC
pre-regulators. The SG6561/A is pin compatible with
the L6561, and it has many new features. It provides a
controlled on-time to regulate the output DC voltage
and achieve natural power factor correction. The
maximum on-time of the switch is programmable to
ensure safe operation during brownouts. An innovative
multi-vector error amplifier is built in to provide rapid
transient response and precise output voltage clamping.
A built in circuit will disable the controller if the output
feedback loop is opened. The start up current is lower
than 20uA and the operating current has been shrunk to
4.5mA. The supply voltage can be up to 25 volts,
maximizing application flexibility. The SG6561/A
enables cycle-by-cycle current limiting protection for
the external power MOSFET to be easily achieved.
GD
CS
Open Frame Power Supplies and Power Adapters
Flyback Power Converters with ZCS/ZVS
The SG6561/A PFC controller is an 8-pin
R5
RS
Q1
D1
R3
R4
Product Specification
C4
November 24,2003
www.sg.com.tw
V
O
SG6561/A

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SG6561D Summary of contents

Page 1

Power Factor Controller FEATURES Boundary Mode PFC Controller Low Input Current THD Controlled On-Time PWM Zero-Current Detection Cycle-by-Cycle Current Limiting Leading-Edge Blanking instead of RC Filtering Fast Current Sense Propagation Delay Low Start-Up Current (20uA) Low Operating Current (4.5mA) Feedback ...

Page 2

... Features SG6561UT Null=Without Advanced XXXXXXXYYWWV Features DIP SOP 1 XXXXXXX: Wafer Lot YY: Year; WW: Week ORDERING INFORMATION Part Number Package SG6561D 8-pin DIP SG6561S 8-pin SOP SG6561AD 8-pin DIP SG6561AS 8-pin SOP PIN DESCRIPTIONS Pin Name Function Inverting input of the error amplifier. INV is connected to the converter output via a resistive divider. This pin is also ...

Page 3

Power Factor Controller BLOCK DIAGRAM 1 INV 2.5V Voltage Regulator UVLO 12.5V/9.5V ©System General Corp. Version 1.0 (IRO33.0006.B2) COMP MOT 2 3 Saw Tooth Generator Internal Supply 6 5 GND ZCD - 3 - Product Specification Vlimit ...

Page 4

Power Factor Controller ABSOLUTE MAXIMUM RATINGS Symbol Parameter V DC Supply Voltage INV, ZCD, GD HIGH V Others (COMP,CS, MOT) LOW R Thermal Resistance J-A Θ T Operating Junction Temperature J T Operating Ambient Temperature A T Storage ...

Page 5

Power Factor Controller Error Amp (SG6561A compensation capacitor is connected between COMP pin and GND.) Symbol Parameter V Reference Voltage REF A Open Loop Gain V B Gain Bandwidth W Z Output Impedance o I Input Bias Current FB V ...

Page 6

Power Factor Controller Zero Current Detection Symbol Parameter V Input Threshold Voltage Rising Edge ZCD Threshold Voltage Hysteresis YS ZCD I Sink & Source Current Capability ZCD-MAX V Upper Clamp Voltage ZCD-HIGH V Lower Clamp Voltage ZCD-LOW ...

Page 7

Power Factor Controller TYPICAL CHARACTERISTICS vs 2.600 2.550 2.500 2.450 2.400 -40 -25 - ...

Page 8

Power Factor Controller OVP on Vcc which disable the output (V vs. Temperature 28.0 27.5 27.0 26.5 26.0 25.5 -40 -25 - TEMPERATURE ( ℃ ) The Voltage on MOT(V ) vs. Temperature RT 1.280 1.275 ...

Page 9

Power Factor Controller OPERATION DESCRIPTION Error Amplifier The inverting input of the error amplifier is referenced to INV. The output of the error amplifier is referenced to COMP. The non-inverting input is internally connected to a fixed 2.5V ± 2% ...

Page 10

Power Factor Controller activating cycle-by-cycle current designed protection point threshold is 0.8V. Leading-Edge Blanking A turn-on spike will inevitably occur at the CS pin when the power MOSFET is switched on. At the beginning of each switching pulse, the current-limit ...

Page 11

Power Factor Controller REFERENCE CIRCUIT: SG6561 Circuit: The compensation capacitor C3 is connected from the COMP pin to INV pin. BD1 C1 R1 VAC C2 REFERENCE CIRCUIT: SG6561A Circuit: The compensation capacitor C3 is connected from the COMP pin to ...

Page 12

Power Factor Controller BOM Reference Components BD1 1N4007×4 C1 1uF/400V C2 22uF/25V C3 10uF C4 47uF/450V C5 10nF D1 BYT13-600 D2 1N4150 D3 1N5248B ©System General Corp. Version 1.0 (IRO33.0006.B2) Reference Components T1 Q1 MOS STP8NA50 R1 1MΩ R2 68kΩ ...

Page 13

Power Factor Controller PACKAGE INFORMATION 8 PINS-DIP( Dimension Millimeters Symbol Min 0.381 A2 3.175 9.017 E E1 6.223 e L 2.921 e 8.509 B 0˚ θ˚ ©System General ...

Page 14

Power Factor Controller 8 PINS-SO( Dimension Millimeters Symbol Min. A 1.346 A1 0.101 4.648 E 0.381 5.791 L 0.406 0˚ θ˚ ©System General Corp. Version 1.0 (IRO33.0006.B2) ...

Page 15

Power Factor Controller LIFE SUPPORT System General’s products are not designed to be used as components in devices intended to support or sustain human life. Use of System General’s products in components intended for surgical implant into the body, or ...

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