l6590a STMicroelectronics, l6590a Datasheet
l6590a
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l6590a Summary of contents
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... ORDERING NUMBER: L6590AN - HOME APPLIANCES/LIGHTING LINE CARD, DC-DC CONVERTERS DESCRIPTION The L6590A is a monolithic switching regulator de- signed in BCD OFF-LINE technology, able to operate with wide range input voltage and to deliver up to 15W output power. The internal power switch is a lat- eral power MOSFET with a typical R ...
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... L6590A DESCRIPTION (continued) The MOSFET is source-grounded, thus it is possible to build flyback, boost and forward converters. The device is meant to work with secondary feed- back for tight tolerance of the regulated output volt- age. The internal fixed oscillator frequency and the inte- grated non dissipative start-up generator minimize the external component count and power consump- tion ...
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... Storage Temperature stg Description COMP by modulating the current. COMP Parameter . Parameter < 50°C amb ) controls the PWM modulator: the higher Value Value -0.3 to 700 0 1.5 -40 to 150 -40 to 150 L6590A Unit °C/W °C/W Unit °C °C 3/19 ...
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... L6590A ELECTRICAL CHARACTERISTCS (T Symbol Parameter POWER SECTION V Drain Source Voltage (BR)DSS I Off state drain current dss R Drain-to-Source on resistance DS(on see fig. 17 DS(on) j PWM CONTROL INPUT V Vout High COMPH I Source Current COMP R Dynamic Resistance COMP OSCILLATOR SECTION F Oscillator Frequency osc D Min. Duty Cycle ...
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... Parameter guaranteed by design, not tested in production (***) Parameters guaranteed by design, functionality tested in production Test Condition Transition from osc SB Transition from osc Voltage either rising or falling pin I = 0.5 mA pin L6590A Min. Typ. Max. Unit 80 mA 190 mA 2.325 2.5 2.675 V -30 -50 -70 µA 5.6 6 ...
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... L6590A Figure 1. Start-up & UVLO Thresholds Vcc [ - [°C] Figure 2. Start-up Current Generator Icc [mA] 5.5 Vdrain = 4 Vcc [V] Figure 3. Start-up Current Generator Icc [mA] 5.5 Vdrain = 4 Vcc [V] 6/19 Figure 4. IC Consumption Before Start-up Icc [µ ...
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... Figure 11. OCP Threshold vs. Current Slope Ipklim / (Ipklim @ di/dt = 120 mA/µs) 1.06 1.04 1.02 1 0.98 0.96 50 100 150 Figure 12. OCP threshold vs. Temperature Ipklim / (Ipklim @ Tj = 25°C) 1.1 1.08 1. clamp 1.04 1. clamp 1 0.98 -50 100 150 L6590A 0 50 100 Tj [° °C 100 150 200 dI/dt [mA/µs] di/dt = 120 mA/µ 100 Tj [°C] 150 250 150 7/19 ...
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... L6590A Figure 13. COMP pin Characteristic VCOMP [ 0.2 0.4 0.6 0.8 ICOMP [mA] Figure 14. COMP pin Dynamic Resistance vs. Temperature RCOMP [kOhm] 10.5 10 9.5 9 8 [°C] Figure 15. Breakdown Voltage vs. Temperature BVDSS / (BVDSS @ Tj = 25°C) 1.08 1.06 Idrain = 200 µA 1.04 1.02 1 0.98 0.96 0.94 0.92 - [°C] 8/19 Figure 16. Drain Leakage vs. Drain Voltage Idrain [µ ...
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... Tj [° 1N5821 4.7 µH C8 C5, C6, C7 220 µF 470 µF 10V 16V Rubycon Rubycon 560 1 4 OP1 PC817 2. 6 100 IC2 2.43 k TL431 C4 2 class 0.22 mm) L6590A 150 5 Vdc / 9/19 ...
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... L6590A Figure 22. Test Board evaluation data Test board Load & Line regulation Output Voltage [V] 5 4.98 4.96 4.94 4.92 4.9 0.003 0.01 0.03 0.1 Load Current [A] Test Board Light-load Consumption Input Power [mW] 1,200 1,000 800 600 400 200 0 50 100 150 200 250 DC Input Voltage [V] Figure 23. Test Board EMI characterization ...
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... Vin = 100 V DC Iout = 2 A A1: Idrain A1: Idrain Vin = 100 V DC Iout = 50 mA transition Vin = 200 ⇒ Iout = 0.2 0.4 A Standby Function L6590A Vin = 400 V Iout = 2 A Vin = 400 V Ch1: Vdrain Iout = 50 mA Vout transition 65 ⇒ 22 kHz Vin = 200 V 65 kHz Iout = 0.1 Iout is tripped ...
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... EMI. Under UVLO conditions an internal pull-down circuit holds the gate low in order to ensure that the power MOS- FET cannot be turned on accidentally. 12/19 DRAIN 15 M UVLO Vcc 150 17 V L6590A POWER MOSFET GND of 700V min. and a typ- (BR)DSS ...
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... The signal coming from the sense circuit is digitally filtered to avoid false triggering of this function as a result of large load changes or noise. Max. Duty cycle S Clock from OCP PWM comparator - 1 mA COMP L6590A to gate driver L6590A 13/19 ...
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... RMS current. Figure 29. Brownout Function internal schematic and timing diagram HV Input bus 50 µA BOK + 6 2.5 V 14/19 Pout 80 mA 190 mA Peak Primary Current Load regulation Vout small glitch kHz kHz HV Input bus OFF Vcc VinOK Vcc VinOK L6590A PWM Vout 1 ms ...
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... Converter shutdown can be accomplished with the L6590A by means of an internal comparator that can be used to sense the voltage across the input bulk capacitor. This comparator is internally referenced to 2.5V and dis- ables the PWM if the voltage applied at its non-inverting input, externally available, is below the reference ...
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... L6590A At turn-on, there are large current spikes due to the discharge of parasitic capacitances and, in case of Contin- uos Conduction Mode operation, to secondary diode reverse recovery as well, which could falsely trigger the OCP comparator. To increase noise immunity the output of the OCP comparator is blanked for a short time (about 120 ns) just after the MOSFET is turned on, so that any disturbance within this time slot is rejected (Lead- ing Edge Blanking) ...
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... C8 C5, C6, C7 100 µF 470 µF 10V 560 R5 2. 240 470 nF R6 IC2 2 TL431 2. STPS3L60S 4.7 µH C8 C6, C7 100 µF 330 µ 1N4148 R4 100 OP1 PC817 BZX79C10 C5 2 L6590A 12 Vdc / 0 17/19 ...
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... L6590A 18/19 ...
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... STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain 2000 STMicroelectronics - All Rights Reserved ® STMicroelectronics GROUP OF COMPANIES - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com L6590A 19/19 ...