©On-Bright Electronics Confidential DESCRIPTIONS
OB6563 is an active transition-mode (TM) power factor correction (PFC) controller for AC-DC switching mode power supply applications.
OB6563 features an internal start-up timer for stand-alone applications, a one quadrant multiplier with THD optimizer for near unity power factor, zero current detector (ZCD) to ensure TM operation, a current nsing comparator with built-in leading-edge blanking, and a totem pole output ideally suited for driving a power MOSFET.
OB6563 offers great protection coverage including system over-voltage protection (OVP) to eliminate runaway output voltage due to load removal, VCC under voltage lockout (UVLO), cycle-by-cycle current limiting, multiplier output clamping that limit maximum peak switch current, and gate drive output clamping for external power MOSFET protection.
With added system open loop protection feature, OB6563 shuts down system when the feedback loop is open.
In OB6563, the dynamic OVP nsing current is t to 10uA, which will decrea system standby power greatly. When ud with On-Bright PWM controller OB2298 or Quasi-Resonant controller OB2203 in a 150W AC/DC power design, it can deliver <0.4W standby power at universal AC range input.
OB6563 is offered in SOP-8 and DIP-8 packages.
FEATURES
• Transition Mode (TM) Operation
• One quadrant multiplier with THD optimizer • Low Dynamic OVP Sensing Current Setting • Low Start-up Current and Operating Current • Cycle-by-Cycle Current Limiting • Internal RC Filter
• Trimmed 1.5% Internal Bandgap Reference • Under Voltage Lockout with Hysteresis
• Very Preci Adjustable Output Overvoltage Protection
• Internal Start-up Timer for Stand-alone Applications • Disable Function
• Totem Pole Output with High State Clamping • System Open Loop Protection
• Proprietary Audio Noi Free Operation • 9.5V to 28V wide range of VCC voltage
APPLICATIONS
• Electronic Ballast • AC-DC SMPS
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TYPICAL APPLICATION
GD CS
VCC 1234
8765
ZCD MULT COMP INV AC
GND OB6563
C1
C2
C3
R1
C4
C5
R2
R3
R4R5
Q1D1
L1
C6
R6
D2D3
R7R8
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©On-Bright Electronics Confidential GENERAL INFORMATION
Terminal Assignment In SOP8 or DIP8 Package.
Ordering Information Part Number Description OB6563AP 8 Pin DIP, Pb free in Tube OB6563CP 8 Pin SOP, Pb free in Tube OB6563CPA 8 Pin SOP, Pb free in T&R
Package Dissipation Rating
Package
R θJA ( C/W) DIP8 90 SOP8 150
Absolute Maximum Ratings Symbol Parameter Value VCC DC Supply voltage
30 V
I_ZCD
Zero Current
Detector Max.
Current
50mA(source)
-10mA(sink)
CS INV COMP MULT
Analog inputs & outputs
-0.3 to 7V
Tj Min/Max Operating Junction Temperature
-40 to 150 o
C Tstg
Min/Max Storage
Temperature
-55 to 150 o
C
Lead Temperature (Soldering, 10cs ) 260 o
C
Note: Stress beyond tho listed under “absolute maximum
ratings” may cau permanent damage to the device. The are stress ratings only, functional operation of the device at the or any other conditions beyond tho indicated under “recommended operating conditions” is not implied. Exposure to absolute maximum-rated conditions for extended periods may affect device reliability.
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COMP MULT
CS VCC GD GND ZCD O
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©On-Bright Electronics Confidential Marking Information
aieeTERMINAL DESCRIPTIONS
Pin Num Pin Name I/O Description 1 INV I Inverting Input of Error Amplifier. Connected to Resistor Divider from
System Output. This pin is also ud for system open loop protection.
puffy2 COMP O Output of Error Amplifier. A feedback compensation network is placed
between COMP and the INV pin.
3 MULT I Input of Multiplier. Connected to Line Voltage after Bridge Diodes via A
Resistor Divider to Provide Sinusoidal Reference Voltage to the Current Loop.
4 CS I Current Sen Input Pin. Connected to MOSFET Current Sensing Node.
5 ZCD I Zero Current Detection Input. When Activated, A New Switching Cycle
Starts. If it is connected to GND, the device is disabled.
6 GND P Ground Pin
7 GD O Gate driver output. Drive Power MOSFET.
8 VCC P DC Supply Voltage.
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©On-Bright Electronics Confidential BLOCK DIAGRAM
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©On-Bright Electronics Confidential ELECTRICAL CHARACTERISTICS
(T A = 25O C if not otherwi noted)
Symbol Pin Parameter Test Conditions Min Typ Max Unit SUPPLY VOLTAGE SECTION Vcc 8 Operating Range After Turn On 11 28 V 8 Turn-on Threshold 11 12 13 V
UVLO
生产用英语怎么说8 Turn-off Threshold 8.5 9.5 10.5 V
Hys 8 Hysteresis 2.5 V Vz 8 Zener Voltage Icc =
5mA 30 33 36 V
SUPPLY CURRENT SECTION
Icc-start 8 Start-up Current Vcc =
11V 35 70 uA Iq 8 Quiescent Current, No
Switching
Vcc =14.5V 2.9 4 mA
C L =1nf @ 70kHz 4 5.5 mA
Icc 8 Operating Supply Current In OVP condition Vpin1=2.7V
1.4
2.1 mA
Vpin5≤150mV Vcc=14.5V
1.1
2.1 mA
Iq 8 Quiescent Current Vpin5≤150mV, Vcc<Vcc off
35 70 uA ERROR AMPLIFIER SECTION
Vinv 1 Voltage Feedback Input Threshold V cc =
14.5V 2.45 2.5 2.55 V Vinv 1 Line Regulation 12V<Vcc<28V 2 5 mV
Iinv 1 Input Bias Current I DD = 10 mA -0.1 -1 uA Gv Voltage Gain Open Loop 60 80 dB Gb Gain Bandwidth 1.2 MHz
Source Current Vcomp=3.6V, Vinv=2.4V -1 -3 -5 mA
Icomp 2
Sink Current Vcomp = 3.6V, Vinv = 2.6V 1 3 5 mA Upper Clamp Voltage Isource=0.5mA 4.9 V
Vcomp 2
Lower Clamp Voltage Isink =0.2mA
2.25 V MULTIPLIER SECTION Vmult 3 Linear Operating Range Vcomp=
3.0V 0 to
3.5
V
ΔVcs/ ΔVmult Output Max. Slope Vmult=from 0 to 0.5v Vcomp=Upper Clamp
Voltage
1.65 1.9 V/V K Gain Vmult =1V, Vcomp =
3.5V 0.65 1/V CURRENT SENSE COMPARATOR Vcs 4 Current Sen Reference Clamp Vmult=2.5V Vcomp=Upper Clamp
Voltage
1.55 1.7 1.85 V
Ics 4 Input Bias Current Vcs=0 0.1 uA Td(H-L) 4 Delay to Output 200 450 ns O
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