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 Output 325 VDC in Simple system configuration provides zero consumption Power Down Mode standby/Power-Down with user controlled wake up Very tight IC parameter tolerances improves system manufac- Wide Range turing yield High-Voltage D Suitable for low-cost clampless designs DC Input FB Frequency jittering greatly reduces EMI filter cost Power LinkZero-AX BP/M Down Extended package creepage improves system field reliability Pulse S 2.5 ms Advanced Protection/Safety Features C BP Reset/Wake Hysteretic thermal shutdown protection automatic recovery Up Pulse reduces field returns Universal input range allows worldwide operation PI-5909-120710 Auto-restart reduces delivered power by >85% during Figure 1. Typical Application Schematic. short-circuit and open loop fault conditions Simple ON/OFF control, no loop compensation needed High bandwidth provides fast turn on with no overshoot Output Power Table EcoSmart Energy Efficient 230 VAC 15% 85-265 VAC Standby/Power-Down consumption less than 3 mW at 3 Product 325 VDC input (Note 1) 2 2 Open Frame Open Frame Easily meets all global energy efficiency regulations with no LNK584DG 3 W 3 W added components ON/OFF control provides constant efficiency to very light loads LNK584GG 3 W 3 W LNK585DG 4.5 W 4 W Applications LNK585GG 5 W 4.5 W Ultra low consumption isolated or non-isolated standby and auxiliary supplies LNK586DG 6 W 5 W LNK586GG 6.5 W 5.5 W Description LinkZero-AX combines extremely low standby/Power-Down energy Table 1. Output Power Table. use with the industrys lowest component count standby supply Notes: 1. IEC 62301 Clause 4.5 rounds standby power use below 5 mW to zero. solution. Below 3 mW at 230 VAC in Power-Down (PD) mode 2. Maximum practical continuous power in an open frame design with adequate heat meets IEC 62301 definition of zero power consumption and is sinking, measured at 50 C ambient. immeasurable on most power meters. LinkZero-AX is set into 3. Packages: D: SO-8C, G: SMD-8C. Power-Down mode using an external signal to pull the FEEDBACK pin high for 2.5 ms. Such an external signal can be generated by a system micro controller or infrared controller. In Power-Down mode the BYPASS pin remains regulated allowing the LinkZero-AX to be woken up with a reset pulse 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 signicfi antly reduce both quasi-peak and average EMI, minimizing filter cost. www.powerint.com November 2012 +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 G Package (SMD-8C) D Package (SO-8C) operating current for both start-up, steady-state and Power- Down mode operation. 8 1 BP/M 1 8 S BP/M S BYPASS/MULTI-FUNCTIONAL (BP/M) Pin: 7 2 An external bypass capacitor, 0.1 mF or greater for the internally FB 2 S 7 S FB generated 5.85 V supply is connected to this pin. The minimum 6 S 6 S value of capacitor is 0.1 mF for internal circuit operation. Higher 4 5 values may be required to enter Power-Down mode (see D S D 4 5 S LinkZero-AX Power-Down (PD) Mode Design Considerations). 3a 3b An overvoltage protection disables MOSFET switching if the current into the pin exceeds 6.5 mA (I ). SD PI-5910-090810 FEEDBACK (FB) Pin: Figure 3. Pin Configuration. During normal operation, switching of the power MOSFET is controlled by this pin. MOSFET switching is disabled when a voltage greater than an internal V reference voltage is applied FB to this pin. The V reference voltage is internally set to 1.70 V. FB LinkZero-AX 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. B 11/12 www.powerint.com - +