L6599A STMicroelectronics, L6599A Datasheet
L6599A
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L6599A Summary of contents
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... High efficiency industrial SMPS ■ AC-DC adapter, open frame SMPS Table 1. Device summary Order codes L6599AD L6599ADTR L6599AN September 2010 Improved high-voltage resonant controller DIP16 Package SO16N SO16N DIP16 Doc ID 15308 Rev 5 L6599A SO16N Packaging Tube Tape and reel Tube 1/36 www.st.com 36 ...
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... Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 Typical electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.1 Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.2 Operation at no load or very light load . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.3 Soft-start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.4 Current sense, OCP and OLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.5 Latched shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.6 Line sensing function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.7 Bootstrap section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2/36 Doc ID 15308 Rev 5 L6599A ...
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... L6599A 1 Description The L6599A is an improved revision of the previous L6599 double-ended controller specific for the series-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 ...
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... Block diagram 2 Block diagram Figure 1. Block diagram 4/36 Doc ID 15308 Rev 5 L6599A ...
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... L6599A 3 Pin connection Figure 2. Pin connection (top view) Table 2. Pin description Pin N# Type 1 Css 2 DELAY 3 CF Function Soft-start. This pin connects an external capacitor to GND and a resistor to RFmin (pin 4) that set both the maximum oscillator frequency and the time constant for the frequency shift that occurs as the chip starts up (soft-start). An internal switch discharges this capacitor every time the chip turns off (Vcc < ...
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... The information is latched and it is necessary to recycle the supply voltage of the IC to enable it to restart: the latch is removed as the voltage on the Vcc pin goes below the UVLO threshold. Tie the pin to GND if the function is not used. Doc ID 15308 Rev 5 L6599A ...
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... L6599A Table 2. Pin description (continued) Pin N# Type 9 PFC_STOP 10 GND 11 LVG 12 Vcc 13 N.C. 14 OUT 15 HVG 16 VBOOT Function Open-drain ON/OFF control of PFC controller. This pin, normally open, is intended for stopping the PFC controller, for protection purpose or during burst-mode operation. It goes low when the IC is shut down by DIS>1.85 V, ISEN > ...
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... Maximum pin voltage (Ipin ≤ 1 mA) Maximum source current Analog inputs and Outputs Power dissipation @ °C (DIP16) A Power dissipation @ °C (SO16) A Junction temperature operating range Storage temperature Parameter Doc ID 15308 Rev 5 L6599A Value Unit -1 to 618 -18 V BOOT 50 V/ns Self-limited V -0 ...
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... L6599A 5 Electrical characteristics 105 °C, Vcc = 15 V, VBOOT = kΩ; unless otherwise specified. RFmin Table 5. Electrical characteristics Symbol IC supply voltage Vcc Operating range Vcc Turn-on threshold On Vcc Turn-off threshold Off Hys Hysteresis V Vcc clamp voltage Z Supply current I Start-up current ...
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... Voltage rising Voltage falling Doc ID 15308 Rev 5 Min. Typ. Max. -1 (1) 1.78 1.85 1. 58.2 60 61.8 240 250 260 0.2 0.3 0.4 3.9 0.9 1.93 2 2.07 (1) 1.93 2 2.07 1 130 200 0.2 0.5 120 -1 (1) 1.2 1.24 1.28 50 0.5 100 150 200 (1) 1.98 2.05 2.12 (1) 3.35 3.5 3.65 (1) 0.3 0.33 0.36 L6599A Unit µ kHz µ A/A 1 µA Ω V µA Ω µ µA µ ...
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... L6599A Table 5. Electrical characteristics (continued) Symbol Low-side gate driver (voltages referred to GND) V Output low voltage LVGL V Output high voltage LVGH I Peak source current sourcepk I Peak sink current sinkpk t Fall time f t Rise time r UVLO saturation High-side gate driver (voltages referred to OUT) ...
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... Typical electrical performance 6 Typical electrical performance Figure 3. Device consumption vs supply voltage Figure 5. V clamp voltage vs CC junction temperature 12/36 Figure 4. IC consumption vs junction temperature Figure 6. UVLO thresholds vs junction temperature Doc ID 15308 Rev 5 L6599A ...
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... L6599A Figure 7. Oscillator frequency vs junction temperature Figure 9. Oscillator frequency vs timing components Typical electrical performance Figure 8. Dead-time vs junction temperature Figure 10. Oscillator ramp vs junction temperature Doc ID 15308 Rev 5 13/36 ...
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... Typical electrical performance Figure 11. Reference voltage vs junction temperature Figure 13. OCP delay source current vs junction temperature 14/36 Figure 12. Current mirroring ratio vs junction temperature Figure 14. OCP delay thresholds vs junction temperature Doc ID 15308 Rev 5 L6599A ...
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... L6599A Figure 15. Standby thresholds vs junction temperature Figure 17. Line thresholds vs junction temperature Typical electrical performance Figure 16. Current sense thresholds vs junction temperature Figure 18. Line source current vs junction temperature Pin 7 (uA) 13.5 13 12.5 12 11.5 ‐ Doc ID 15308 Rev 5 Vcc = 15V 100 120 Tj ...
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... Typical electrical performance Figure 19. Latched disable threshold vs junction temperature 16/36 Doc ID 15308 Rev 5 L6599A ...
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... L6599A 7 Application information The L6599A is an advanced double-ended controller specific for resonant half-bridge topology (see Figure 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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... R-C series circuit (CSS+RSS) connected between the pin and ground that enables to set up a frequency shift at start-up (see contribution of this branch is zero during steady-state operation. 18/36 Figure 22 shows a simplified internal Section 7.3: Soft-start). Note that the Doc ID 15308 Rev 5 L6599A ...
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... L6599A Figure 22. Oscillator's internal block diagram The following approximate relationships hold for the minimum and the maximum oscillator frequency respectively: Equation 1 After fixing CF in the hundred the nF (consistently with the maximum source capability of the RFmin pin and trading this off against the total consumption of the device), ...
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... The L6599A can be operated in burst-mode by using pin 5 (STBY): if the voltage applied to this pin falls below 1.24 V the IC will enter an idle state where both gate-drive outputs are ...
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... IC as possible to reduce switching noise pick-up, will help get clean operation. To help the designer meet energy saving requirements even in power-factor-corrected systems, where a PFC pre-regulator precedes the DC-DC converter, the L6599A allows that the PFC pre-regulator can be turned off during burst-mode operation, hence eliminating the ...
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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 26 . When the L6599A is in UVLO the pin is kept open, to let the PFC controller start first Figure 25. Load-dependent operating modes: timing diagram Figure 26 ...
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... With the L6599A converter's soft start-up is simply realized with the addition of an R-C series circuit from pin 4 (RFmin) to ground (see ...
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... min − start 1 f min min Figure simpler but the dissipation on the sense resistor Rs Doc ID 15308 Rev 5 L6599A − ⋅ The proposed criterion for C SS Figure 27 to see some Figure more complex but is ...
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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 L6599A 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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... Overloads or short circuits lasting less than T with immunity to short duration phenomena. If, instead, T protection (OLP) procedure is activated that shuts down the L6599A and, in case of continuous overload/short circuit, results in continuous intermittent operation with a user- defined duty cycle. ...
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... As a rough indication, with C reaches 3.5 V. This phase lasts: Delay = ⋅ µF. During this time the L6599A runs at a Delay (see Section 7.3: Soft-start start is 3.5V, the L6599A stops switching and the Delay . The IC will restart when the voltage on C Delay ...
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... Application information The timing diagram of voltage of the L6599A (Vcc) falls below the UVLO threshold the IC keeps memory of the event and will not restart immediately after Vcc exceeds the start-up threshold if V(DELAY) is still higher than 0.3 V. Also the PFC_STOP pin will stay low as long as V(DELAY) is greater than 0 ...
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... As an additional measure of safety (e.g. in case the low-side resistor is open or missing non-power factor corrected systems in case of abnormally high input voltage) if the voltage on the pin exceeds 7 V the L6599A is shutdown. If its supply voltage is always above the UVLO threshold, the IC will restart as the voltage falls below 7 V. ...
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... MOSFETs of the half- bridge leg is low, so that, generally check this point anyway and the following equation is useful to compute the drop on the bootstrap driver: 30/ the L6599A a patented integrated structure, BOOT Figure 31 b. (DS)ON rise is not an issue ...
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... L6599A Equation 13 where Qg is the gate charge of the external power MOS, R bootstrap DMOS (150 W, typ.) and T equals about half the switching period minus the dead time T MOSFET with a total gate charge of 30nC, the drop on the bootstrap driver is about switching frequency of 200 kHz: ...
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... Application information Figure 32. Application example: 90W AC/DC adapter using L6563H, L6599A and SRK2000 32/36 Doc ID 15308 Rev 5 L6599A ...
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... L6599A 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. Figure 33. DIP16 mechanical data DIM. ...
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... MAX. MIN. TYP. MAX. 1.75 0.069 0.25 0.004 0.009 1.6 0.063 0.46 0.014 0.018 0.25 0.007 0.010 0.5 0.020 45° (typ.) 10 0.386 0.394 6.2 0.228 0.244 1.27 0.050 8.89 0.350 4.0 0.150 0.157 5.30 0.181 0.208 1.27 0.150 0.050 0.62 0.024 8 ° (max.) Doc ID 15308 Rev 5 L6599A OUTLINE AND MECHANICAL DATA SO16 (Narrow) 0016020 D ...
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... L6599A 9 Revision history Table 6. Document revision history Date 19-Jan-2009 25-Feb-2009 13-Mar-2009 30-Oct-2009 28-Sep-2010 Revision 1 Initial release 2 Updated Table 5 on page 9 3 Updated data on Table 5 on page 9 4 Updated Table 5 on page 9 5 Added: Section 6 on page 12 Doc ID 15308 Rev 5 Revision history ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 36/36 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 15308 Rev 5 L6599A ...