L6590D STMicroelectronics, L6590D Datasheet
L6590D
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L6590D Summary of contents
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... The internal power switch is a lat- eral power MOSFET with a typical R and a V (BR)DSS Pout AC line 88 to 264 Vac up to 15W Vcc 3 5 VFB L6590 MINIDIP SO16W ORDERING NUMBERS: L6590N L6590D DS(on) of 700V minimum. DRAIN 1 L6590 Vcc GND VFB COMP Secondary Feedback of 13 Pout ...
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... An heatsink can then be realized by simply making provision of few cm copper on the PCB. Furthermore, the pin(s) close to the high-voltage one are not connected to ease com- pliance with safety distances on the PCB. DRAIN [x] : L6590D (SO16W) (1) [1] START-UP VREF SUPPLY THERMAL & ...
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... PIN FUNCTIONS Pin# Name L6590 L6590D 1 1 DRAIN Drain connection of the internal power MOSFET. The internal high voltage start-up generator sinks current from this pin N.C. Not internally connected. Provision for clearance on the PCB Supply pin of the IC. An electrolytic capacitor is connected between this pin and ground. ...
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L6590 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. 20 DS(on) j ERROR AMP SECTION V Input Voltage FB ...
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... Masking Time STANDBY SECTION F Oscillator Frequency SB I Peak switch current for Standby pksb Operation I Peak switch current for Normal pkno Operation BROWNOUT PROTECTION (L6590D only) V Threshold Voltage th I Current Hysteresis Hys V Clamp Voltage CL THERMAL SHUTDOWN (***) Threshold Hysteresis (*) Parameters tracking one the other ...
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L6590 Figure 3. Start-up Current Generator Icc [mA] 5.5 Vdrain = 4 Vcc [V] Figure 4. IC Consumption Before Start-up Icc [µA] 700 600 500 400 Tj = 125 °C ...
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Figure 9. Vcc clamp vs. Temperature VCCclamp [V] 18 17.8 17.6 17.4 17 [°C] Figure 10. OVP Threshold vs. Temperature Vth [V] 16 15.8 15.6 15.4 15 [°C] Figure 11. ...
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L6590 Figure 15. COMP pin Characteristic VCOMP [ 0.2 0.4 0.6 0.8 ICOMP [mA] Figure 16. COMP pin Dynamic Resistance vs. Temperature RCOMP [kOhm] 10.5 10 9.5 9 8.5 8 -50 0 ...
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Figure 21. Rds(ON) vs. Idrain Rds(ON) / (Rds(ON) @ Idrain=120 mA) 1 °C 1.2 1.1 1 0.9 0 100 200 300 Idrain [mA] Figure 23. Standby Function Thresholds Drain Peak Current [mA] 220 22 kHz 65 kHz ...
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L6590 Figure 24. Test Board (1) with Primary Feedback: Electrical Schematic F1 2A/250V BD1 DF06M Vin 88 to 264 Vac C1 22 µF 400 V IC1 5 680 nF 1.1 k L6590 ...
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Figure 26. Test Board (1) Main Waveforms Ch3: Idrain Ch2: Vdrain Ch3: Idrain Ch2: Vdrain Figure 27. Test Board (2) with Secondary Feedback: Electrical Schematic F1 2A/250V Vin 100 264 Cx B ...
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L6590 Figure 28. Test Board (2) evaluation data 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] Light-load Consumption Input Power [mW] 1,000 800 600 400 200 0 50 ...
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Figure 30. Test Board (2) Main Waveforms A1: Idrain Ch1: Vdrain A1: Idrain Ch1: Vdrain Figure 31. Test Board (2) Load Transient Response Vout Iout Standby Function is not tripped Ch1: Vdrain Vin = 100 V DC Iout = 2 ...
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L6590 APPLICATION INFORMATION In the following sections the functional blocks as well as the most important internal functions of the device will be described. Start-up Circuit When power is first applied to the circuit and the voltage on the bulk ...
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Figure 33. PWM Control internal schematic OSCILLATOR Oscillator and PWM Control PWM regulation is accomplished by implementing voltage mode control. As shown in fig. 33, this block includes an oscillator, a PWM comparator, a PWM latch and an Error Amplifier. ...
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... STANDBY (before filter) STANDBY (filtered) Brownout Protection (L6590D only) Brownout Protection is basically a not-latched device shutdown functionality. It will typically be used to detect a mains undervoltage (brownout). This condition may cause overheating of the primary power section due to an excess of RMS current. Figure 35. Brownout Protection Function internal schematic and timing diagram HV Input bus 50 µ ...
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... Converter shutdown can be accomplished with the L6590D 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 disables the PWM if the voltage applied at its non-inverting input, externally available, is below the reference ...
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L6590 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 ...
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... L6590 4 (L6590D) ( 16) 5 (8) Figure 39. 15W Auxiliary SMPS for PC Vin = 200 to 375 Vdc R2 1 L6590D specification Core E20/10/6, ferrite 3C85 or N67 or equivalent 0.9 mm gap for a primary inductance <50 µH leakage Primary : 200 T, 2 series windings 100T each, AWG33 Sec : AWG23 ( 0.64 mm) ...
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... 100 nF Vin 88 to 264 Vac Cx B 100 (4) L6590 (L6590D 16 Core E20/10/6, ferrite 3C85 or N67 or equivalent 1 mm gap for a primary inductance of 2 <60 µH leakage Primary : 230 T, 2 series windings 115T each, AWG36 Sec : 13 T, AWG23 ( Aux : 60 T, AWG36 REFERENCES [1] “ ...
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L6590 21/23 ...
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L6590 22/23 ...
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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...