LinkZero-LP Power Integrations, Inc., LinkZero-LP Datasheet
LinkZero-LP
Related parts for LinkZero-LP
LinkZero-LP Summary of contents
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... AC power. IEC 62301 specifies measurements of standby power to a minimum accuracy of 10 mW, and so LinkZero-LP’s consumption of substantially less than 230 VAC rounds to zero based on the IEC definition. This low power level is also immeasurable on most power meters ...
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LNK574 BYPASS/ MULTI FUNCTION (BP/M) GENERATOR FEEDBACK REF 1. 1.37 V OPEN LOOP PULL UP FEEDBACK (FB CUT BACK 1. 0.9 V POWER DOWN COUNTER 160 f OSC CYCLES Figure 2 Functional ...
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... The BYPASS pin voltage is regulated by drawing a current from the DRAIN whenever the MOSFET is off if needed to charge up the BYPASS pin to a typical voltage of 5.85 V. When the MOSFET is on, LinkZero-LP runs off of the energy stored in the bypass capacitor. Extremely low power consumption of the internal circuitry allows LinkZero-LP to operate continuously from the current drawn from the DRAIN pin ...
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... The auto-restart function reduces the average output current during an output short-circuit condition. The LinkZero-LP device is self biased through the DRAIN pin. However, to improve efficiency at high line, an external bias may be added using optional components diode D5 and resistor R2. ...
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... When the LinkZero- mode, the time taken for the BYPASS pin voltage to discharge to V the duration of the PD off-time. The duration of the PD off time also determines the ripple on the output voltage. ...
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... Figure 5. PCB Layout 350 mA Charger. Thermal Considerations The copper area underneath the LinkZero-LP (U1) acts not only as a single point ground, but also as a heatsink connected to the quiet source node, this area should be maximized for good heat sinking of U1. The same applies to the cathode of the output diode ...
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Absolute Maximum Ratings (1,6) DRAIN Voltage .................................. ......... ..............-0 700 V Peak DRAIN Current LNK574 ..............................200 (375) mA Peak Negative Pulsed Drain Current ................... ......... -100 mA Feedback Voltage ................................................. ....... -0 Feedback Current ...
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LNK574 Parameter Symbol Control Functions (cont.) Minimum Switch t ON-Time ON(MIN DRAIN Supply Current BYPASS Pin CH1 Charge Current I CH2 BYPASS Pin Voltage V BP BYPASS Pin V Voltage Hysteresis BP(H) BYPASS Pin BP ...
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... C. Output frequency specification applies to low line input voltage in the final application. The controller is designed to reduce output frequency by approximately 20% at high line input voltages to balance low line and high line maximum output power. D. The auto-restart on-time/off-time is increased by 20% at high line input 265 VAC. E. LinkZero-LP shuts down if current into BYPASS pin reaches I www.powerint.com Conditions SOURCE = 0 V ...
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LNK574 0.1 µF Figure 6. General Test Circuit. Figure 7. Duty Cycle Measurement. 10 Rev. B 12/07/10 BP 470 Ω MAX (internal signal DRAIN ...
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Typical Performance Characteristics 1.1 1.0 0.9 -50 - Junction Temperature (°C) Figure 10. Breakdown vs. Temperature. 1.4 1.2 1.0 0.8 0.6 0.4 0 Temperature (°C) Figure 12. Current Limit vs. Temperature ...
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LNK574 Typical Performance Characteristics (cont.) 1000 100 100 200 300 400 Drain Voltage (V) Figure 16. C vs. Drain Voltage. DSS 1.8 1.7 1.6 1.5 1.4 1 ...
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Typical Performance Characteristics (cont.) 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 200 400 600 800 1000 1200 1400 Power Down Off-Time (ms) Figure 22. Power Down Off-Time vs. BYPASS Pin Capacitor. V Start at 5.85 ...
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... Package outline inclusive of plating thickness. 4. Datums A and determined at datum plane Controlling dimensions are in millimeters. Inch dimensions are shown in parenthesis. Angles in degrees. 0.60 (0.024) • LinkZero Product Family • LinkZero-LP Series Number • Package Identifier D Plastic SO-8C • Package Material G GREEN: Halogen Free and RoHS Compliant • ...
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Notes LNK574 15 Rev. B 12/07/10 ...
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... The PI logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, PeakSwitch, CPAZero, SENZero, EcoSmart, Clampless, E-Shield, Filterfuse, StakFET, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. ©2010, Power Integrations, Inc. ...