PKS607FN Power Integrations, PKS607FN Datasheet
PKS607FN
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PKS603-607 PeakSwitch Enhanced, Energy-Efficient, Off-Line Switcher IC With Super Peak Power Performance Product Highlights ® EcoSmart – Extremely Energy-Efficient • Standby output power ≥0.6 W for 1 W input (high line) • Sleep mode power ≥2 input (high line) • No-load consumption <200 mW at 265 VAC input • Surpasses California Energy Commission (CEC), ENERGY STAR, and EU requirements PeakSwitch Features Reduce System Cost • Delivers peak power three times maximum continuous output power • 277 kHz operation during peak power significantly reduces transformer size • ...
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PKS603-607 BYPASS (BP) LINE UNDER-VOLTAGE 240 µA 25 µA LATCH OFF/ RESTART COUNTER ON TIME EXT 6.3 V ENABLE JITTER 1 OSCILLATOR ENABLE/ 1.0 V UNDER- VOLTAGE (EN/UV) Figure 2. Functional Block Diagram. Pin Functional Description ...
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PeakSwitch Functional Description PeakSwitch integrates a 700 V power MOSFET switch with a power supply controller on the same die. Unlike conventional pulse width modulation (PWM) controllers, PeakSwitch uses a simple ON/OFF control to regulate the output voltage. The controller consists of an oscillator, enable circuit (sense and logic), current-limit state machine, 5.8 V regulator, BYPASS pin under-voltage circuit, over- temperature protection, current limit circuit, and leading edge blanking. PeakSwitch incorporates ...
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PKS603-607 hysteresis of 75 °C (typical) is provided to prevent overheating of the PC board during a continuous fault condition. Current Limit The current limit circuit senses the current in the power MOSFET. When this current exceeds the internal threshold (I power MOSFET is turned off for the remainder of that cycle. The current limit state machine reduces the current limit threshold by discrete amounts under medium and light loads. The leading edge blanking circuit inhibits the current limit comparator for a short time (t ) after the power MOSFET is LEB turned on. This leading edge blanking time has been set so that current spikes caused by capacitance and secondary-side rectifier reverse recovery time will not cause premature termination of the MOSFET conduction portion of the switching cycle. During startup and fault conditions, the controller prevents excessive drain currents by reducing ...
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V 300 DRAIN 200 100 DC-OUTPUT Time (s) Figure 6. PeakSwitch Auto-Restart Operation. the line under-voltage sense circuit prevents a restart attempt until the AC input voltage is removed (I <25 µA). Then the internal auto-restart latch is reset and EN the power MOSFET switching will resume once the AC input ...
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PKS603-607 of a PeakSwitch design are constant, the power delivered to the load is proportional to the primary inductance of the transformer and peak primary current squared. Hence, designing the supply involves calculating the primary inductance of the transformer for the maximum output power required. If the chosen PeakSwitch family member is appropriate for the power level, the current in the calculated inductance will ramp up to current limit before the DC limit is reached. MAX Enable Function PeakSwitch senses the EN/UV pin to determine whether or not ...
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V DC-INPUT BYPASS 0 Modifying current schematic 300 200 100 V DRAIN Time (ms) Figure 12. PeakSwitch Power Up Without Optional External UV Resistor Connected to EN/UV Pin. 200 V 100 0 400 300 ...
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PKS603-607 C4 D1-D4 150 µF 1N4007 400 1.3 MΩ 1.3 MΩ D5 1N4007 C3 680 RT1 10 Ω C7 C1-C2 100 nF F1 100 pF 400 V 3.15 A 250 ...
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This protects the load and supply from a continuous fault condition. Removing the AC input resets this condition. The output voltage is determined by the Zener diode VR2, the voltage drop across R12 and the forward drop of D9 and the LED of optocoupler U2. Resistor R13 provides bias current through D9 and VR2, to ensure that VR2 is operating close to its knee voltage, while R12 sets the overall gain of the feedback loop. Capacitor C15 boosts high frequency loop gain to help distribute the enabled switching cycles and reduce pulse grouping. When the output voltage exceeds the feedback threshold voltage, current will flow in the optocoupler LED, causing current flow in the transistor of the optocoupler. W hen this exceeds the ENABLE pin threshold current the next switching cycle is inhibited, as the output voltage falls (below the feedback threshold) a conduction cycle is allowed to occur and by adjusting the number of enabled cycles output regulation is maintained. As the load reduces the number of enabled cycles decreases, lowering the effective switching frequency and scaling switching losses with load. This provides almost constant efficiency down to very light loads, ideal for meeting energy efficiency requirements. PeakSwitch device U1 is supplied from an auxillary winding on the transformer which is rectified and filtered by D7 and C6. Resistor R7 provides approximately supply current into the BYPASS pin capacitor C8. During startup or fault conditions when the bias voltage is low, the BYPASS pin is supplied from ...
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PKS603-607 Power ( ∆t ∆ Figure 16. Continuous (Average) Output Power Calculation Example. Figure 16 shows how to calculate the average power requirements for a design with two different peak load conditions. Where P are the different output power conditions, Δt X durations of each peak power condition, and T is the period of one cycle of the pulse load condtion. Audible Noise The cycle ...
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Input Filter Capacitor PeakSwitch S TOP VIEW S + Input Filter Capacitor HV - TOP VIEW Heat Sink Figure 17. Recommended Layout for PeakSwitch in (a) P and (b) Y/F Packages. Safety Spacing Capacitor PRI ...
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PKS603-607 Thermal Considerations For the P package, the four SOURCE pins are internally connected to the IC lead frame and provide the main path to remove heat from the device. Therefore, all the SOURCE pins should be connected to a copper area underneath the PeakSwitch to act not only as a single point ground, but also as a heatsink. As this area is connected to the quiet source node, it should be maximized for good heatsinking. Similarly, for axial output diodes, maximize the PCB area connected to the cathode. Y-Capacitor The placement of the Y-type cap should be directly from the primary input filter capacitor positive terminal to the common/ return terminal of the transformer secondary second Y- type cap is required from primary to secondary return, connect the primary side directly to the negative terminal of the input capacitor. Such a placement will route high magnitude common mode surge currents away from the PeakSwitch device. Note – input π ( EMI filter is used, then the inductor in ...
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DRAIN Voltage .................................. . .............-0 700 V DRAIN Peak Current: ....................... . ..... 2 × I EN/UV Voltage ....................................................-0 EN/UV Current .................................................... ....... 100 mA BYPASS Voltage .................................................. - 0 Storage Temperature ......................................-65 °C to 150 °C Operating Junction Temperature .................-40 °C to 150 °C (2) Lead Temperature ................ . ...................................... 260 °C (3) Thermal Impedance: Y/F Package ........................................80 °C/W ( ..........................................2 °C/W ( Package: ...
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PKS603-607 Parameter Symbol CONTROL FUNCTIONS (cont.) BYPASS Pin Shunt V Regulator Voltage BP(SH) BYPASS Pin V Voltage BP BYPASS Pin V Voltage Hysteresis BPH EN/UV Pin Line Under-Voltage I LUV Threshold CIRCUIT PROTECTION Current Limit I LIMIT Power Coefficient I ...
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Parameter Symbol CIRCUIT PROTECTION (cont.) Initial Current Limit I INIT Leading Edge t Blanking Time LEB Current Limit t Delay ILD Thermal Shutdown Temperature Thermal Shutdown Hysteresis OUTPUT ON-State R Resistance DS(ON) I DSS1 OFF-State Drain Leakage Current I DSS2 ...
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PKS603-607 Parameter Symbol OUTPUT (cont.) Auto-Restart t ON Time AR Auto-Restart t OFF Time AROFF NOTES: A. Total current consumption is the sum of I switching) and the sum of I and Since the output MOSFET is ...
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EN/ NOTE: This test circuit is not applicable for current limit or output characteristic measurements. Figure 18. PeakSwitch General Test Circuit. Figure 19. Duty Cycle Measurement. 470 470 ...
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PKS603-607 Typical Performance Characteristics 1.1 1.0 0.9 -50 - Junction Temperature (°C) Figure 22. Breakdown vs. Temperature. 1.2 1 0.8 0.6 0.4 0 Junction Temperature (°C) Figure 24. Standard Current Limit vs. Temperature. ...
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Typical Performance Characteristics (cont.) 1.2 1 0.8 0.6 0.4 0 Junction Temperature (°C) Figure 28. Under-Voltage Threshold vs. Temperature. 100 150 Figure 29. Maximum Allowable Drain Current vs. PKS603-607 2.5 2 1 ...
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PKS603-607 PART ORDERING INFORMATION PKS 60 .390 (9.91) .146 (3.71) .420 (10.67) .156 (3.96) + .860 (21.84) .880 (22.35) PIN 1 .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 (1.27) .200 (5.08) .100 (2.54) PIN ...
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D S .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) -T- SEATING PLANE .100 (2.54) BSC .048 (1.22) .053 (1.35) .014 (.36) ⊕ .010 (.25) ...
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PKS603-607 .390 (9.91) .420 (10.67) .795 (20.18) REF. PIN 1 .050 (1.27) BSC .150 (3.81) BSC .050 (1.27) .050 (1.27) .050 (1.27) .200 (5.08) .100 (2.54) PIN 1 .150 (3.81) MOUNTING HOLE PATTERN F07C 22 Rev. I 02/07 TO-262-7C .055 ...
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PKS603-607 23 Rev. I 02/07 ...
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... A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. The PI logo, TOPSwitch, TinySwitch, LinkSwitch, DPA-Switch, PeakSwitch, Clampless, EcoSmart, E-Shield, Filterfuse, StackFET, PI Expert and PI FACTS are trademarks of Power Integrations, Inc. Other trademarks are property of their respective companies. ©Copyright 2007, Power Integrations, Inc. Power Integrations Worldwide Sales Support Locations WORLD HEADQUARTERS GERMANY 5245 Hellyer Avenue Rueckertstrasse 3 San Jose, CA 95138, USA ...