L6566BH ,Multi-mode controller for SMPSElectrical characteristics . . . . 125 Application information . . . . . 165.1 High volta ..
L6566BHTR ,Multi-mode controller for SMPSblock diagram 7Figure 3. Pin connection (through top view) . . . . 8Figure 4. Multimode o ..
L6566BTR ,Multi-mode controller for SMPSElectrical characteristics . . . . 125 Application information . . . . . 175.1 High-volta ..
L6567 ,HIGH VOLTAGE DRIVER FOR CFLBLOCK DIAGRAMVhvRhv Cp/CavRHV CP13 8V 5 1 F VhvS SVSHIGH 2 G1PREHEATING LEVEL FEED FORWARD T1SIDE T ..
L6567D ,HIGH VOLTAGE DRIVER FOR CFLBLOCK DIAGRAMVhvRhv Cp/CavRHV CP13 8V 5 1 F VhvS SVSHIGH 2 G1PREHEATING LEVEL FEED FORWARD T1SIDE T ..
L6567D ,HIGH VOLTAGE DRIVER FOR CFLL6567HIGH VOLTAGE DRIVER FOR CFLn BCD-OFF LINE TECHNOLOGYMULTIPOWER BCD TECHNOLOGYn FLOATING SUPPLY ..
LC4032B-75T44C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4032C-75T48C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4032V-10TN44I , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4032V-25TN48C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4032V-5T44C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4032V-75T48C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
L6566BH-L6566BHTR
Multi-mode controller for SMPS
April 2012 Doc ID 16610 Rev 2 1/51
L6566BHMultimode controller for SMPS
Datasheet — production data
Features Selectable multimode operation: fixed
frequency or quasi-resonant On-board 840 V high voltage startup Advanced light load management Low quiescent current (< 3 mA) Adaptive UVLO Line feedforward for constant power capability
vs. mains voltage Pulse-by-pulse OCP, shutdown on overload
(latched or auto-restart) Transformer saturation detection Programmable frequency modulation for EMI
reduction Latched or auto-restart OVP Brownout protection -600/+800 mA totem pole gate driver with
active pull-down during UVLO SO16N package
Applications Industrial SMPS SMPS running off rectified 3-phase input line
Figure 1. Block diagram
Contents L6566BH2/51 Doc ID 16610 Rev 2
Contents Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.1 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.1 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165.1 High voltage startup generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Zero-current detection and triggering block; oscillator block . . . . . . . . . . 19
5.3 Burst-mode operation at no load or very light load . . . . . . . . . . . . . . . . . . 22
5.4 Adaptive UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.5 PWM control block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.6 PWM comparator, PWM latch and voltage feedforward blocks . . . . . . . . 25
5.7 Hiccup-mode OCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.8 Frequency modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.9 Latched disable function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.10 Soft-start and delayed latched shutdown upon overcurrent . . . . . . . . . . . 32
5.11 OVP block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.12 Brownout protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.13 Slope compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
5.14 Summary of L6566BH power management functions . . . . . . . . . . . . . . . 39
Application examples and ideas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
L6566BH Contents
Doc ID 16610 Rev 2 3/51
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
List of tables L6566BH
4/51 Doc ID 16610 Rev 2
List of tables
Table 1. Pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 5. L6566BH light load management features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 6. L6566BH protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Table 7. External circuits that determine IC behavior upon OVP and OCP . . . . . . . . . . . . . . . . . . . 44
Table 8. SO16N mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 9. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
L6566BH List of figures
Doc ID 16610 Rev 2 5/51
List of figures
Figure 1. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Typical system block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 3. Pin connection (through top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4. Multimode operation with QR option active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5. High voltage startup generator: internal schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 6. Timing diagram: normal power-up and power-down sequences . . . . . . . . . . . . . . . . . . . . 18
Figure 7. Timing diagram showing short-circuit behavior (SS pin clamped at 5 V) . . . . . . . . . . . . . . 19
Figure 8. VHV rating vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 9. Drain ringing cycle skipping as the load is gradually reduced . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10. Operation of ZCD, triggering and oscillator blocks (QR option active) . . . . . . . . . . . . . . . . 22
Figure 11. Load-dependent operating modes: timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 12. Addition of an offset to the current sense lowers the burst-mode operation threshold. . . . 23
Figure 13. Adaptive UVLO block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 14. Possible feedback configurations that can be used with the L6566BH . . . . . . . . . . . . . . . 24
Figure 15. Externally controlled burst-mode operation by driving the COMP pin: timing diagram. . . . 25
Figure 16. Typical power capability change vs. input voltage in QR flyback converters . . . . . . . . . . . 26
Figure 17. Left: overcurrent setpoint vs. VFF voltage; right: line feedforward function block. . . . . . . . 27
Figure 18. Hiccup-mode OCP: timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 19. Frequency modulation circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 20. Operation after latched disable activation: timing diagram. . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 21. Soft-start pin operation under different operating conditions and settings . . . . . . . . . . . . . 33
Figure 22. OVP function: internal block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 23. OVP function: timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 24. Maximum allowed duty cycle vs. switching frequency for correct OVP detection. . . . . . . . 36
Figure 25. Brownout protection: internal block diagram and timing diagram . . . . . . . . . . . . . . . . . . . . 37
Figure 26. Voltage sensing techniques to implement brownout protection with the L6566BH . . . . . . 38
Figure 27. Slope compensation waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 28. Typical low-cost application schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 29. Typical full-feature application schematic (QR operation) . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 30. Typical full-feature application schematic (FF operation) . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 31. Frequency foldback at light load (FF operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 32. Latched shutdown upon mains overvoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 33. SO16N package drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 34. Recommended footprint (dimensions are in mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
