L6599 STMicroelectronics, L6599 Datasheet
L6599
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... Order code Package L6599D SO-16N SO-16N L6599N DIP- BOOT 15 HVG HVG DRIVER 14 OUT LEVEL SHIFTER DRIVER 10 + GND 1.5V R UVLO 6 ISEN + - 0.8V 9 PFC_STOP - LINE_OK + ISEN_DIS DIS STANDBY L6599 Packaging Tube Tape and reel Tube H.V. C BOOT LC TANK CIRCUIT 1/36 www.st.com 36 ...
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... Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Typical electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2 Operation at no load or very light load . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.3 Soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.4 Current sense, OCP and OLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.5 Latched shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 7.6 Line sensing function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 7.7 Bootstrap section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.8 Application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2/36 L6599 ...
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... L6599 1 Device description The L6599 is a double-ended controller specific for the resonant half-bridge topology. It provides 50 % complementary duty cycle: the high-side switch and the low-side switch are driven ON\OFF 180° out-of-phase for exactly the same time. Output voltage regulation is obtained by modulating the operating frequency. A fixed dead- time inserted between the turn-OFF of one switch and the turn-ON of the other one guarantees soft-switching and enables high-frequency operation ...
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... Css 1 16 DELAY RFmin 13 4 STBY 12 5 ISEN 6 11 LINE 7 10 DIS 9 8 Function < UVLO, LINE < 1. > DIS > 1.85 V, ISEN > CC L6599 VBOOT HVG OUT N.C. Vcc LVG GND PFC_STOP ...
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... L6599 Table 2. Pin functions (continued) N. Name Minimum oscillator frequency setting. This pin provides a precise 2 V reference and a resistor connected from this pin to GND defines a current that is used to set the minimum oscillator frequency. To close the feedback loop that regulates the converter output voltage ...
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... High-side gate-drive floating supply Voltage. The bootstrap capacitor connected between this pin and pin 14 (OUT) is fed by an internal synchronous bootstrap diode driven in-phase 16 VBOOT with the low-side gate-drive. This patented structure replaces the normally used external diode. 3 Typical system block diagram Figure 3. Typical system block diagram 6/36 Function L6599 ...
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... L6599 4 Electrical data 4.1 Maximum ratings Table 3. Absolute maximum ratings Symbol Pin V 16 BOOT V 14 OUT 14 dV /dt OUT PFC_STOP I 9 PFC_STOP V 7 LINEmax I 4 RFmin Analog inputs and outputs Note: ESD immunity for pins 14, 15 and 16 is guaranteed up to 900 V 4 ...
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... Voltage rising = nF 470 pF; LVG F Min Typ Max 8.85 10 10.7 11.4 7.45 8.15 8.85 2. 17.9 200 - 0 1.5 STBY 3.5 DELAY < 1.25 V 300 clamp 150 ISENdis LVG 250 (1) 0.76 0.8 0.84 50 (1) 1.44 1.5 1.56 300 L6599 Unit 250 µ 400 µA 5 µA 5 µA Ω -1 µ 400 ns ...
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... L6599 Table 5. Electrical characteristics (continued) Symbol Line sensing V Threshold voltage th I Current hysteresis Hyst V Clamp level clamp DIS function I Input bias current DIS V Disable threshold th Oscillator D Output duty cycle f Oscillation frequency osc T Dead-time D V Peak value CFp V Valley value CFv Voltage reference at ...
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... Voltage rising Voltage rising Voltage falling I = 200 mA sink source CC(ON sink I = 200 mA sink source Min Typ Max 0.5 100 150 200 (1) 1.92 2 2.08 (1) 3.3 3.5 3.7 (1) 0.25 0.3 0.35 1.5 12.8 13.3 -0.3 0 1.1 1.5 12.8 13.3 -0.3 0 L6599 Unit µA µ kΩ ...
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... L6599 6 Typical electrical performance Figure 4. Device consumption vs supply voltage Figure 6. V clamp voltage vs CC junction temperature Typical electrical performance Figure 5. IC consumption vs junction temperature Figure 7. UVLO thresholds vs junction temperature 11/36 ...
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... Typical electrical performance Figure 8. Oscillator frequency vs junction temperature Figure 10. Oscillator frequency vs timing components 12/36 Figure 9. Dead-time vs junction temperature Figure 11. Oscillator ramp vs junction temperature L6599 ...
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... L6599 Figure 12. Reference voltage vs junction temperature Figure 14. OCP delay source current vs junction temperature Typical electrical performance Figure 13. Current mirroring ratio vs junction temperature Figure 15. OCP delay thresholds vs junction temperature 13/36 ...
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... Typical electrical performance Figure 16. Standby thresholds vs junction temperature Figure 18. Line thresholds vs junction temperature Figure 20. Latched disable threshold vs junction temperature 14/36 Figure 17. Current sense thresholds vs junction temperature Figure 19. Line source current vs junction temperature L6599 ...
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... L6599 7 Application information The L6599 is an advanced double-ended controller specific for resonant half-bridge topology. In these converters the switches (MOSFETs) of the half-bridge leg are alternately switched on and OFF (180° out-of-phase) for exactly the same time. This is commonly referred to as operation at "50 % duty cycle", although the real duty cycle, that is the ratio of the ON-time of either switch to the switching period, is actually less than 50 % ...
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... Chapter 7.3: L6599 RFmin 0.9V R Fmax - + - ------------------------------------ - ⋅ min ----------------------------------------------------------------- ⋅ ⋅ ( max Figure 22 shows a simplified internal Soft-start). Note that the K ·I K · 2·K · ⋅ min min max L6599 ...
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... L6599 After fixing CF in the hundred the nF (consistently with the maximum source capability of the RF the value of RF min cover the entire range needed for regulation, from the minimum value f voltage and maximum load) to the maximum value f minimum load): A different selection criterion will be given for RF will be used (see " ...
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... To overcome this issue, the L6599 enables the designer to make the converter operate intermittently (burst-mode operation), with a series of a few switching cycles spaced out by long idle periods where both MOSFETs are in OFF-state, so that the average switching frequency can be substantially reduced ...
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... IC is idle during burst-mode operation. This signal will be externally used for switching off the PFC controller and the pre-regulator as shown in Figure 27 When the L6599 is in UVLO the pin is kept open, to let the PFC controller start first. will define the switching frequency f ...
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... Application information Figure 26. Load-dependent operating modes: timing diagram STBY 1.25V f osc LVG HVG PFC_STOP PFC GATE-DRIVE Figure 27. How the L6599 can switch OFF a PFC controller at light load Vcc 12 L6599 9 20/36 Resonant Mode Burst-mode ZCD 22 k Ω L6561/2 100 kΩ BC547 BC547 PFC_STOP ...
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... With the L6599 converter's soft start-up is simply realized with the addition of an R-C series circuit from pin 4 (RF ...
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... RESONANCE FREQUENCY | Steady-state frequency will be selected based on the following relationships min R = --------------------- - SS f start ----------- - 1 – f min ⋅ ------------------- Initial frequency – The proposed criterion for C min Figure 32 to see some L6599 is SS ...
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... Figure 30. Current sensing technique with sense resistor a couple of current sensing methods are illustrated that will be Figure ISEN L6599 10 τ ≈ min Application information is simpler but the dissipation on the sense Figure 31 is more I Cr Vspk 0 6 L6599 23/36 ...
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... It is normal that the voltage on the ISEN pin may overshoot above 0.8 V; however, if the voltage on the ISEN pin reaches 1.5 V, the second comparator will be triggered, the L6599 will shutdown and latch off with both the gate-drive outputs and the PFC_STOP pin low, hence turning off the entire unit ...
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... With the L6599 the designer can program externally the maximum time T converter is allowed to run overloaded or under short circuit conditions. Overloads or short circuits lasting less than T with immunity to short duration phenomena ...
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... V. This phase lasts: Delay ⋅ µF. During this time the L6599 runs at a frequency Delay Chapter 7.3: Soft-start) to minimize the energy inside the resonant circuit. is 3.5 V, the device stops switching and the PFC_STOP pin is Delay . The IC will restart when the voltage on C ⋅ ...
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... PFC pre-regulator front-end, the output voltage of the PFC stage, in which case the function will serve as power-on and power-off sequencing. L6599 shutdown upon input undervoltage is accomplished by means of an internal comparator, as shown in the block diagram of available at pin 7 (LINE). The comparator is internally referenced to 1.25 V and disables the IC if the voltage applied on the LINE pin is below the internal reference ...
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... ON ) thresholds of the input voltage: OFF Vin – 1.25 ON --------------------------------- - = Vin – 1.25 OFF ------------------------------------ - R H and R , yield Vin – ----------------------------------------- - H ⋅ ⋅ ------------------------------------ - Vin OFF Figure 33. 1.25 – 6 ⋅ + ---------- - R H 1.25 = ---------- - R H Vin OFF – 6 1.25 1.25 – voltage (if not CC L6599 ...
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... The supply of the floating high-side section is obtained by means of a bootstrap circuitry. This solution normally requires a high voltage fast recovery diode to charge the bootstrap capacitor the L6599 a patented integrated structure, replaces this external diode. BOOT It is realized by means of a high voltage DMOS, working in the third quadrant and driven ...
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... ON-time of the bootstrap driver, which equals charge – 9 ⋅ ------------------------------------------------------ - 150 V = Drop – 6 – 6 ⋅ ⋅ 2.5 10 – 0 the internal DMOS. DS(on) rise is not an issue. However wise ) arg e is the on-resistance of the DS(on) . For example, using a MOSFET with D + 0.6 = 2.7V L6599 ...
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... L6599 7.8 Application example Figure 35. EVAL6599-90W demo board, 90W adapter with L6563 and L6599: electrical schematic Application information 31/36 ...
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... Application information Table 6. EVAL6599-90W demo board, 90W adapter with L6563 & L6599: evaluation data Vin = 115 Vac Vout Iout [V] [A] 18.95 4.71 18.95 3.72 18.97 2.7 18.98 1.71 18.99 1.0 18.99 0.5 19.00 0.25 19.01 0.080 19.01 0.053 19.01 0.027 19.01 0.013 19.01 0 32/36 Pout Pin Eff. Vout [W] [W] % 89.25 99.13 90.04 18.95 70.49 78.00 90.38 18.96 51.22 56.55 90.57 18.97 32.46 36.00 90.16 18.98 18.99 21.70 87.51 18.99 9.50 11.30 84.03 19.00 4.75 5.86 81.06 19.00 1.52 3 50.70 19.01 1.01 2 50.38 19.01 0.51 1.08 47.53 19.01 0.25 0.66 37.44 19.01 0 0.28 --- 19.01 Vin = 230 Vac Iout Pout Pin [V] [A] [W] [W] 4.71 89.25 97.23 3.72 70.53 76.74 2.7 51.22 55.85 1.71 32.46 35.57 1.0 18.99 21.30 0.5 9.50 10.87 0.25 4.75 5.77 0.080 1.52 2.4 0.053 1.01 1.68 0.027 ...
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... L6599 8 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. Table 7. Plastic DIP-16 mechanical data Dim ...
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... F ( Figure 37. Package dimensions 34/36 mm. Min Typ Max 1.75 0.1 0.25 1.6 0.35 0.46 0.19 0.25 0.5 45° 9.8 10 5.8 6.2 1.27 8.89 3.8 4.0 4.60 5.30 0.4 1.27 0.62 inch Min Typ 0.004 0.014 0.007 0.020 (typ.) 0.386 0.228 0.050 0.350 0.150 0.181 0.150 8°(max.) L6599 Max 0.069 0.009 0.063 0.018 0.010 0.394 0.244 0.157 0.208 0.050 0.024 ...
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... L6599 9 Revision history Table 9. Document revision history Date 15-May-2006 18-Jul-2006 11-Feb-2009 Revision 1 Initial release 2 Typo in cover page Not recommended for new designs, the device has been 3 replaced by L6599A Revision history Changes 35/36 ...
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... 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 36/36 Please Read Carefully: © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com L6599 ...