L6562AD STMicroelectronics, L6562AD Datasheet
L6562AD
Specifications of L6562AD
Available stocks
Related parts for L6562AD
L6562AD Summary of contents
Page 1
... UVLO and voltage clamp ■ DIP-8/SO-8 packages Figure 1. Block diagram Table 1. Device summary Order codes L6562AN L6562AD L6562ADTR August 2007 Transition-mode PFC controller DIP-8 Applications PFC pre-regulators for: ■ IEC61000-3-2 compliant SMPS (Flat TV, monitors, desktop PC, games) ■ ...
Page 2
Contents Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
L6562A 1 Description The L6562A is a current-mode PFC controller operating in Transition Mode (TM). Coming with the same pin-out as its predecessors L6561 and L6562, it offers improved performance. The highly linear multiplier includes a special circuit, able to ...
Page 4
Pin settings 2 Pin settings 2.1 Pin connection Figure 2. Pin connection (top view) 2.2 Pin description Table 2. Pin description Pin N° Name 1 INV 2 COMP 3 MULT ZCD 6 GND Vcc ...
Page 5
L6562A 3 Maximum ratings Table 3. Absolute maximum ratings Symbol Pin --- ZCD 4 Thermal data Table 4. Thermal data Symbol R Max. Thermal Resistance, Junction-to- thJA ambient P Power Dissipation @T ...
Page 6
Electrical characteristics 5 Electrical characteristics Table 5. Electrical characteristics ( -25°C < T < +125° 12V Symbol Parameter Supply voltage V Operating range CC Vcc Turn-on threshold On Vcc Turn-off threshold Off Hys Hysteresis V ...
Page 7
L6562A Table 5. Electrical characteristics (continued) ( -25°C < T < +125° 12V Symbol Parameter Upper clamp voltage V COMP Lower clamp voltage V Disable threshold INVdis V Restart threshold INVen Output overvoltage Dynamic OVP ...
Page 8
Electrical characteristics Table 5. Electrical characteristics (continued) ( -25°C < T < +125° 12V Symbol Parameter Gate driver V Output low voltage OL V Output high voltage OH I Peak source current srcpk I Peak ...
Page 9
L6562A 6 Typical electrical characteristic Figure 3. Supply current vs supply voltage 10.00 1.00 0.10 0.01 0.00 0.00 5.00 Figure 5. IC consumption 0.1 0.01 -50 0 Figure ...
Page 10
Typical electrical characteristic Figure 7. Feedback reference vs T 2.6 2.55 2.5 2.45 2.4 -50 0 Figure 9. E/A output clamp levels -50 0 10/26 Figure Vcc = ...
Page 11
L6562A Figure 11. Multiplier characteristic 1.2 Upper Volt. Clamp 1.1 5.75 V 1.0 0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -0.1 0 0.2 0.4 0.6 0.8 Figure 13. ZCD clamp levels ...
Page 12
Typical electrical characteristic Figure 15. Gate-driver output low saturation 5.00 4.00 3.00 2.00 1.00 0.00 0 200 Figure 17. Gate-drive clamp vs T 13.5 13.25 13 12.75 12.5 -50 0 12/26 Figure 16. Gate-drive output high 12.00 11.00 10.00 9.00 ...
Page 13
L6562A 7 Application information 7.1 Overvoltage protection Under steady-state conditions, the voltage control loop keeps the output voltage PFC pre-regulator close to its nominal value, set by the resistors R1 and R2 of the output divider. Neglecting ...
Page 14
Application information When the load of a PFC pre-regulator is very low, the output voltage tends to stay steadily above the nominal value, which cannot be handled by the Dynamic OVP. If this occurs, however, the error amplifier output will ...
Page 15
L6562A Figure 19. THD optimization: standard TM PFC controller (left side) and L6562A (right side) Rectified mains voltage Imains Input current To overcome this issue the circuit embedded in the device forces the PFC pre-regulator to process more energy near ...
Page 16
Application information 7.4 Operating with no auxiliary winding on the boost inductor To generate the synchronization signal on the ZCD pin, the typical approach requires the connection between the pin and an auxiliary winding of the boost inductor through a ...
Page 17
L6562A 7.5 Comparison between the L6562A and the L6562 The L6562A is not a direct drop-in replacement of the L6562, even if both have the same pin-out. One function (Disable) has been relocated. Table 2 compares the two devices, i.e. ...
Page 18
Application examples and ideas 8 Application examples and ideas Figure 21. Demo board EVL6562A-TM-80W, wide-range mains : electrical schematic W08 W08 4A/250V 4A/250V Vac Vac - - 88V 88V to to 264V 264V Boost ...
Page 19
L6562A Figure 22. L6562A 80W TM PFC evaluation board: compliance to EN61000-3-2 standard Measurements @ 230Vac Full load 1 0.1 0.01 0.001 0.0001 ...
Page 20
Application examples and ideas Figure 26. L6562A 80W TM PFC evaluation board: Power Factor vs Vin 1.00 0.95 0.90 Pout = 80W 0.85 0.80 80 100 120 140 160 180 Vin (Va c) Figure 28. L6562A 80W TM PFC evaluation ...
Page 21
L6562A Figure 30. Demo board EVL6562A-400W, wide-range mains, Application examples and ideas : electrical schematic FOT 21/26 ...
Page 22
Package mechanical data 9 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect . The category of second level interconnect is marked on the package ...
Page 23
L6562A Table 7. DIP-8 mechanical data Dim Figure 31. Package dimensions mm Min Typ Max 3.32 0.51 1.15 1.65 0.356 0.55 0.204 0.304 10.92 7.95 9.75 ...
Page 24
Package mechanical data Table 8. SO-8 mechanical data Dim ( ddd 1. Dimensions D does not include mold flash, protru-sions or gate burrs. Mold flash, potrusions or gate ...
Page 25
L6562A 10 Revision history Table 9. Revision history Date 03-Mar-2007 28-Jun-2007 07-Aug-2007 Revision 1 First release 2 Updated electrical characteristics 3 Added Chapter 6: Typical electrical characteristic on page 9 Revision history Changes 25/26 ...
Page 26
... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...