L6562AT STMicroelectronics, L6562AT Datasheet
L6562AT
Available stocks
Related parts for L6562AT
L6562AT Summary of contents
Page 1
... L6562ATD L6562ATDTR March 2009 Transition-mode PFC controller DIP-8 ■ DIP-8/SO-8 packages Applications PFC pre-regulators for: ■ Street lighting ■ IEC61000-3-2 compliant SMPS (Flat TV, monitors, desktop PC, games) ■ Electronic ballast Package DIP-8 SO-8 Rev 2 L6562AT SO-8 Packaging Tube Tube Tape and reel 1/25 www.st.com 25 ...
Page 2
... Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 6 Typical electrical characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.1 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.2 Disable function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.3 THD optimizer circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.4 Operating with no auxiliary winding on the boost inductor . . . . . . . . . . . . 15 7.5 Comparison between the L6562AT and the L6562 . . . . . . . . . . . . . . . . . 16 8 Application examples and ideas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2/25 L6562AT ...
Page 3
... Description 1 Description The L6562AT 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 reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range ...
Page 4
... The high-level voltage of this pin is clamped at about avoid excessive gate voltages in case the pin is supplied with a high Vcc. Supply voltage of both the signal part of the IC and the gate driver. The supply voltage upper limit is extended min. to provide more headroom for supply voltage changes. L6562AT Vcc GD GND ZCD ...
Page 5
... T Storage temperature STG 5/25 Parameter ≤ supply voltage ( Output totem pole peak current Analog inputs and outputs 5 Zero current detector max. current Parameter = 50 °C A L6562AT Value Unit Self-limited V Self-limited A -0 ±10 mA Value Unit SO8 DIP8 150 100 °C/W ...
Page 6
... V, MULT COMP °C J (1) 10.5 V < V < INV Open loop 2.4 V COMP INV 2.6 V COMP INV I = 0.5 mA SOURCE ( 0.5 mA SINK L6562AT Min Typ Max Unit 10.5 22.5 V 11.7 12.5 13.3 V 9.5 10 10.5 V 2.2 2 µA 2.5 3.9 mA 3.5 5.5 mA 1.7 2.2 ...
Page 7
... 4.5 V ZCD I = 100 mA sink source mA; Vcc = 20 V source Vcc = CCon sink ( ) = ⋅ − ⋅ MULT COMP L6562AT Min Typ Max Unit 19.5 27 30.5 µA 20 µA 2.1 2.25 2 µA 100 200 300 ns 175 ns 1.0 1.08 1. 5.0 5.7 6 ...
Page 8
... Figure Operating Quiescent Disabled or during OVP Vcc = kHz Before start-up 50 100 150 Tj (°C) Start-up and UVLO Vcc-ON Vcc-OFF - 100 Tj (°C) Vcc Zener voltage - 100 Tj (°C) L6562AT J 150 J 150 ...
Page 9
... Tj (°C) Figure 10. Delay-to-output 300 Upper clamp 200 Vcc = 12V 100 Lower clamp 0 -50 50 100 150 Tj (°C) L6562AT OVP current Vcc = 12V 0 50 100 150 Tj (°C) J Vcc = 12V 0 50 100 150 Tj (°C) ...
Page 10
... Figure 14. Start-up timer Upper clamp Vcc = 12V IZCD = ±2.5 mA Lower clamp 50 100 150 Tj (°C) J 1.3 Vcc = 12V VCOMP = Upper clamp 1.2 1 (° 200 190 180 170 160 150 - (°C) L6562AT 100 150 J Vcc = 12V 100 150 ...
Page 11
... Figure 18. Output gate drive low J 1.1 Vcc = 20V 0.9 0.8 0.7 0.6 0.5 50 100 150 Tj (°C) saturation 0 200 400 I GD (mA) saturation vs T during UVLO J 1 Vcc = 11V Vcc = 0V - 100 Tj (°C) L6562AT °C Vcc = 12V SOURCE 600 Isink = 2 mA 150 ...
Page 12
... R1. Another advantage is the precision: the tolerance of the detection current is 13%, i.e. 13% tolerance on ΔVo. Since ΔVo << Vo, the tolerance on the absolute value will be proportionally reduced. Example 400 V, Δ Then V/27 µ 1.5 MΩ ·2.5/(400-2.5) = 9.43 kΩ. The tolerance on the OVP level due to the L6562AT will be 40·0.13 = 5.3 V, that is ± 1.2 %. 12/25 V – ...
Page 13
... This effect is magnified by the high- frequency filter capacitor placed after the bridge rectifier, which retains some residual voltage that causes the diodes of the bridge rectifier to be reverse-biased and the input current flow to temporarily stop. 13/25 L6562AT ...
Page 14
... Application information Figure 19. THD optimization: standard TM PFC controller (left side) and L6562AT (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 the line voltage zero-crossings as compared to that commanded by the control loop ...
Page 15
... With these values proper operation is guaranteed even with few volts difference ZCD between the regulated output voltage and the peak input voltage Figure 20. ZCD pin synchronization without auxiliary winding 15/25 C ZCD R ZCD ZCD 5 L6562AT L6562AT and 330 kΩ for ZCD ...
Page 16
... Application information 7.5 Comparison between the L6562AT and the L6562 The L6562AT 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. those parameters that may result in different values of the external components ...
Page 17
... R15 R15 SHORTED SHORTED R9 R9 R10 R10 R13 R13 0.68 Ω 0.68 Ω 0.68 Ω 0.68 Ω 15 kΩ 15 kΩ 0.25W 0.25W 0.25W 0.25W L6562AT Vo=400V Vo=400V Po=80W Po=80W R11 R11 1M Ω 1M Ω R12 R12 1M Ω 1M Ω µF 47 µF 450V 450V R13B R13B 82 kΩ ...
Page 18
... Vin = 100 Vac - 50 Hz, Pout = 80 W THD = 3.18 0.997 Figure 25. L6562A 80W TM PFC evaluation board: compliance to JEIDA-MITI standard JEIDA-MITI class D limits Harmonic Order (n) board: input current waveform @100 V-50 Hz – load L6562AT ...
Page 19
... THD vs Vin Pout = 80W 120 140 160 180 200 220 Vin (Vac) board: static Vout regulation vs Vin Pout = 80W 100 120 140 160 180 200 220 Vin (Vac) L6562AT 240 260 240 260 ...
Page 20
... Application examples and ideas Figure 30. Demonstration board EVL6562A-400W, wide-range mains, 20/25 L6562AT FOT ...
Page 21
... Package mechanical data 9 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. 21/25 L6562AT ...
Page 22
... Dim Figure 31. Package dimensions 22/25 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 2.54 7.62 7.62 6.6 5.08 3.18 3.81 1.52 L6562AT Inch Min Typ Max 0.131 0.020 0.045 0.065 0.014 0.022 0.008 0.012 0.430 0.313 0.384 0.100 0.300 0.300 0.260 0.200 0.125 0.150 0.060 ...
Page 23
... Figure 32. Package dimensions 23/25 mm. Min Typ Max 1.35 1.75 0.10 0.25 1.10 1.65 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 5.80 6.20 0.25 0.50 0.40 1.27 0° (min.), 8° (max.) 0.10 L6562AT inch Min Typ Max 0.053 0.069 0.004 0.010 0.043 0.065 0.013 0.020 0.007 0.010 0.189 0.197 0.15 0.157 0.050 0.228 0.244 0.010 0.020 0.016 0.050 0.004 ...
Page 24
... Revision history 10 Revision history Table 9. Document revision history Date 19-Jan-2009 04-Mar-2009 24/25 Revision 1 First release 2 Updated Table 5 on page 6 L6562AT Changes ...
Page 25
... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 25/25 Please Read Carefully: © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com L6562AT ...