LNK584DG Power Integrations

LNK584-586 LinkZero-AX Zero Standby Consumption Integrated Off-Line Switcher Product Highlights Lowest System Cost with Zero Standby Consumption + P <0.00 W at DC IN Simple system configuration provides zero consumption standby/ Output 325 VDC in Power Down Mode power-down with user controlled wake up Very tight IC parameter tolerances improves system manufacturing yield Wide Range Suitable for low-cost clampless designs High-Voltage D Frequency jittering greatly reduces EMI filter cost DC Input FB Power Extended package creepage improves system field reliability LinkZero-AX BP/M Down Pulse S Advanced Protection/Safety Features 2.5 ms Hysteretic thermal shutdown protection automatic recovery C BP reduces field returns Reset/Wake Up Pulse Universal input range allows worldwide operation Auto-restart reduces delivered power by >85% during short-circuit PI-5909-120710 and open-loop fault conditions Simple ON/OFF control, no loop compensation needed Figure 1. Typical Application Schematic. High bandwidth provides fast turn on with no overshoot EcoSmart Energy Efficient Standby/power-down consumption less than 3 mW at Output Power Table 325 VDC input (Note 1) Easily meets all global energy efficiency regulations with no added 230 VAC 15% 85-265 VAC components 3 Product 2 2 ON/OFF control provides constant efficiency to very light loads Open Frame Open Frame Applications LNK584DG 3 W 3 W Ultra low consumption isolated or non-isolated standby and auxiliary LNK584GG 3 W 3 W supplies LNK585DG 4.5 W 4 W Description LNK585GG 5 W 4.5 W LinkZero-AX combines extremely low standby/power-down energy LNK586DG 6 W 5 W use with the industrys lowest component count standby supply LNK586GG 6.5 W 5.5 W solution. Below 3 mW at 230 VAC in power-down (PD) mode meets IEC 62301 definition of zero power consumption and is immeasurable on Table 1. Output Power Table. most power meters. LinkZero-AX is set into power-down mode using Notes: an external signal to pull the FEEDBACK pin high for 2.5 ms. Such an 1. IEC 62301 Clause 4.5 rounds standby power use below 5 mW to zero. external signal can be generated by a system micro controller or 2. Maximum practical continuous power in an open frame design with adequate infrared controller. In power-down mode the BYPASS pin remains heat sinking, measured at 50 C ambient. regulated allowing the LinkZero-AX to be woken up with a reset pulse 3. Packages: D: SO-8C, G: SMD-8C. to pull the BYPASS pin below a reset threshold (1.5 V). Ultra low system consumption is therefore achieved without needing to disconnect the input voltage with a relay. LinkZero-AX is designed to be used in isolated or non-isolated converters. In either, the tightly specified FEEDBACK (FB) pin voltage reference enables universal input primary side regulated power supplies that cost effectively replace unregulated linear transformer and other switched mode supplies. The start-up and operating power are derived directly from the DRAIN pin. The internal oscillator frequency is jittered to significantly reduce both quasi-peak and average EMI, minimizing filter cost. www.power.com November 2015 This Product is Covered by Patents and/or Pending Patent Applications. +LNK584-586 BYPASS/ DRAIN MULTI FUNCTION (D) (BP/M) REGULATOR 5.85 V OVERVOLTAGE + PU + PROTECTION + BYPASS PIN GENERATOR - 3 V 6.5 V UNDERVOLTAGE 5.85 V FEEDBACK REF + 4.85 V OPEN LOOP 1.70 V PULL UP FAULT CURRENT LIMIT FEEDBACK AUTO-RESTART COUNTER (FB) RESET JITTER + VI 0.9 V LIMIT S Q CLOCK DC MAX CC CUT BACK R Q ADJ 1.70 V - 0.9 V OSCILLATOR SYSTEM LEADING POWER POWER EDGE DOWN DOWN BLANKING COUNTER 160 f OSC CYCLES PU RESET PI-5912-111412 SOURCE (S) Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: The power MOSFET drain connection provides internal operating G Package (SMD-8C) current for both start-up, steady-state and power-down mode D Package (SO-8C) operation. BYPASS/MULTI-FUNCTIONAL (BP/M) Pin: 8 1 BP/M 1 8 S BP/M S An external bypass capacitor, 0.1 mF or greater for the internally 7 2 generated 5.85 V supply is connected to this pin. The minimum value FB 2 S 7 S FB of capacitor is 0.1 mF for internal circuit operation. Higher values may 6 be required to enter power-down mode (see LinkZero-AX Power- S 6 S 4 5 Down (PD) Mode Design Considerations). An overvoltage protection D S D 4 5 S disables MOSFET switching if the current into the pin exceeds 6.5 mA (I ). SD 3a 3b FEEDBACK (FB) Pin: During normal operation, switching of the power MOSFET is PI-5910-090810 controlled by this pin. MOSFET switching is disabled when a voltage greater than an internal V reference voltage is applied to this pin. Figure 3. Pin Configuration. FB The V reference voltage is internally set to 1.70 V. LinkZero-AX FB goes into auto-restart mode when the FEEDBACK pin voltage has come down to 0.9 V. SOURCE (S) Pin: This pin is the power MOSFET source connection. It is also the ground reference for the BYPASS and FEEDBACK pins. 2 Rev. C 11/15 www.power.com - +