SG6980DZ

Manufacturer Part NumberSG6980DZ
DescriptionIC PFC CTRLR AVERAGE CURR 16DIP
ManufacturerFairchild Semiconductor
SG6980DZ datasheets
 


Specifications of SG6980DZ

ModeAverage CurrentFrequency - Switching65kHz
Current - Startup10µAVoltage - Supply12.5 V ~ 20 V
Operating Temperature-20°C ~ 125°CMounting TypeThrough Hole
Package / Case16-DIP (0.300", 7.62mm)Output Voltage0.3 V to 25 V
Switching Frequency68 KHzOperating Temperature Range- 20 C to + 125 C
Mounting StyleThrough HoleDuty Cycle (max)98 %
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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Single-Stage PFC Controller
FEATURES OVERVIEW
Innovative switching-charge multiplier divider
Multi-vector control for improved PFC output
transient response
1:2 synchronous switching with SYNC
Average current mode control
Remote on/off control
Power-on sequence control
Programmable PFC output-voltage control
Cycle-by-cycle current limiting
Over-voltage and under-voltage protections
Brownout and open-loop protections
Low start-up and operating current
APPLICATIONS
Active-PFC switching power supplies
TV and home appliances
Computer and telecom
TYPICAL APPLICATION
© System General Corp.
Version 1.0.1 (IAO33.0071.B0
DESCRIPTION
The highly integrated SG6980D is designed for power
supplies with boost power-factor-correction (PFC).
It requires very few external components to achieve
desirable operation and includes versatile protection /
compensation. It is available in 16-pin DIP and SOP
packages.
The
innovative
multiplier-divider enhances the PFC circuit’s noise
immunity. The proprietary multi-vector control scheme
provides a fast transient response in a low-bandwidth PFC
loop, in which the overshoot and undershoot of the PFC
voltage are clamped. If the feedback loop is broken,
SG6980D shuts off to prevent extra-high voltage on output.
The PFC gate driver can be synchronized with external
SYNC signal and the switching noise can be reduced.
During start-up, the RDY (ready) is pulled low until the
PFC output voltage reaches to the setting level. This signal
can be used to control the second forward stage for proper
power-on sequence. In addition, SG6980D provides
complete protection functions, such as brownout protection
and RI open/short.
SG6980
- 1 -
www.sg.com.tw • www.fairchildsemi.com
Product Specification
SG6980D
switching-charge
September 17, 2007

SG6980DZ Summary of contents

  • Page 1

    Single-Stage PFC Controller FEATURES OVERVIEW „ Innovative switching-charge multiplier divider „ Multi-vector control for improved PFC output transient response „ 1:2 synchronous switching with SYNC „ Average current mode control „ Remote on/off control „ Power-on sequence control „ Programmable ...

  • Page 2

    Single-Stage PFC Controller MARKING DIAGRAMS DIP S=SOP SG6980DTP P: XXXXXXXYWWV Y: Year; WW: Week V: Assembly Location ORDERING INFORMATION Part Number Pb-Free Package SG6980DDZ SG6980DSZ (Preliminary) © System General Corp. Version 1.0.1 (IAO33.0071. Lead Free ...

  • Page 3

    Single-Stage PFC Controller PIN DESCRIPTIONS Name Pin Type VRMS 1 Line-Voltage Detection Over-Temperature OTP 2 Protection RI 3 Oscillator Setting IEA 4 Current Amplifier Output Inverting Input for PFC IPFC 5 Current Amplifier Non-inverting Input for IMP 6 PFC Current ...

  • Page 4

    Single-Stage PFC Controller BLOCK DIAGRAM © System General Corp. Version 1.0.1 (IAO33.0071. www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980D September 17, 2007 ...

  • Page 5

    Single-Stage PFC Controller ABSOLUTE MAXIMUM RATING Symbol Parameter V DC Supply Voltage* VDD I Input AC Current AC V OUT, SYNC, ON/OFF, RDY High V Others Low Power Dissipation Operating Junction Temperature J T Operating Ambient Temperature ...

  • Page 6

    Single-Stage PFC Controller ELECTRICAL CHARACTERISTICS V =15V, T =25°C unless otherwise noted Section DD Symbol Parameter V Continuously Operating Voltage DD-OP I Operating Current DD-OP I Input Current IC-OFF I Start-up Current DD-ST V Start Threshold Voltage ...

  • Page 7

    Single-Stage PFC Controller VRMS for UVP and RDY Symbol Parameter RMS AC Voltage Under-voltage Threshold V RMS-UVP-1 (with T Delay) UVP V Recovery Level on VRMS for UVP Mode RMS-UVP-2 Under-Voltage Protection Propagation t UVP Delay Time (No Delay at ...

  • Page 8

    Single-Stage PFC Controller Peak Current Limit Symbol Parameter I Constant Current Output P Peak Current Limit Threshold Voltage V PK Cycle-by-Cycle Limit (V sense t Propagation Delay PD-PFC t Leading-Edge Blanking Time LEB-PFC Multiplier Symbol Parameter I Input AC Current ...

  • Page 9

    Single-Stage PFC Controller SYNC Section Symbol Parameter V Synchronizing Signal High Threshold SYNC-HIGH V Synchronizing Signal Low Threshold SYNC-LOW F Minimum Synchronizing Frequency Min F Maximum Synchronizing Frequency Max t Minimum Synchronizing Pulse Width MIN_PULSE_W t Maximum Synchronizing Pulse Width ...

  • Page 10

    Single-Stage PFC Controller TYPICAL CHARACTERISTICS Operating Current ( Temperature DD OP Temperature ( Start Threshold Voltage ( Temperature DD-ON Temperature ( PW M frequency ( Temperature OSC Temperature ( © System General Corp. Version ...

  • Page 11

    Single-Stage PFC Controller RMS AC Voltage Under-voltage Threshold (w ith TUVP delay Temperature RMS-UVP-1 0.90 0.85 0.80 0.75 0.70 -40 -25 - Temperature ( Multiplier Current Output ( Tem perature MO-1 ...

  • Page 12

    Single-Stage PFC Controller OPERATION DESCRIPTION The highly integrated SG6980D is designed for a power supply with boost PFC. It requires very few external components to achieve high performance and versatile protections / compensation. The PFC function is implemented by average ...

  • Page 13

    Single-Stage PFC Controller ON/OFF For ON/OFF control, the SG6980D is disabled immediately if the voltage at this pin is below 1V. Usually, the pin opens when turn off can have the best power saving. The operating current during turn off ...

  • Page 14

    Single-Stage PFC Controller ---------------------------- The average total input power can be expressed as: u Pin Vin ( rms ) Iin ( rms ) RMS MO ...

  • Page 15

    Single-Stage PFC Controller Gate Drivers SG6980D output stages are fast totem-pole gate drivers. The output driver is clamped by an internal 18V Zener diode to protect the power MOSFET. Over-Temperature Protection SG6980D provides an OTP pin for over-temperature protection. A ...

  • Page 16

    Single-Stage PFC Controller PACKAGE INFORMATION 16 PINS – PLASTIC DIP ( Dimensions: Millimeter Symbol Min 0.381 A2 3.175 18.669 E E1 6.121 e L 2.921 e 8.509 ...

  • Page 17

    Single-Stage PFC Controller 16 PINS – PLASTIC SOP ( Dimension: Millimeter Symbol Min. A 1.346 A1 0.101 A2 1.244 9.804 E 3.810 e H 5.791 L 0.406 © System ...

  • Page 18

    Single-Stage PFC Controller © System General Corp. Version 1.0.1 (IAO33.0071. www.sg.com.tw • www.fairchildsemi.com Product Specification SG6980D September 17, 2007 ...