pks603 Power Integrations, Inc., pks603 Datasheet
pks603
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pks603 Summary of contents
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... PeakSwitch incorporates a 700 V power MOSFET, oscillator, high voltage switched current source for startup, current limit, ® Family AC IN Figure 1. Typical Peak Power Application. PRODUCT PKS603 P PKS604 P PKS604 Y/F PKS605 P PKS605 Y/F PKS606 P PKS606 Y/F PKS607 Y/F Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at +50 °C ambient. ...
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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 DRAIN (D) Pin: The power MOSFET drain connection provides internal operating current for both startup and steady-state operation. BYPASS (BP) Pin: A 0.33 µF external bypass capacitor for the internally generated 5.8 V supply is connected to this pin. In typical applications, this pin must be externally supplied via a bias winding ...
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... Once the BYPASS pin voltage drops below 4 must rise back to 5 enable (turn on) the power MOSFET. Over Temperature Protection The thermal shutdown circuitry senses the die temperature. The threshold is typically set at 142 °C with 75 °C hysteresis. When the die temperature rises above this threshold, the 5 power MOSFET is disabled and remains disabled until the die temperature falls by 75 °C, at which point it is re-enabled. A large PKS603-607 3 Rev. I 02/07 ...
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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. ...
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... MOSFET on at the beginning of each cycle. The MOSFET is turned off when the current ramps up to the current limit or when the DC is reached. Since the highest current limit level and frequency CLOCK D MAX I DRAIN V DRAIN <25 µA) MOSFET EN Figure 7. PeakSwitch Operation at Near Maximum Loading CLOCK D MAX I DRAIN V DRAIN Figure 8. PeakSwitch Operation at Moderately Heavy Loading. PKS603-607 limit MAX PI-2749-050301 PI-2667-090700 5 Rev. I 02/07 ...
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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 to proceed with the next switching cycle as described earlier ...
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... Figure 14 illustrates a very slow power-down timing waveform as in standby applications. An external resistor is connected to the EN/UV pin in this case to prevent unwanted restarts. Current Limit Operation Each switching cycle is terminated when the DRAIN current reaches the current limit of the PeakSwitch. Current limit operation provides good line ripple rejection. BYPASS Pin Capacitor The BYPASS pin uses a small 0.33 uF ceramic capacitor for decoupling the internal power supply. PKS603-607 V DC-INPUT V DRAIN 2.5 Time (s) (4 MW) UV Resistor Connected to EN/UV Pin ...
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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 VAC Figure 15. PeakSwitch PKS606Y Continuous Peak, Universal Input Power Supply. Application Example The circuit shown in Figure15 is a low cost, high efficiency, flyback power supply designed to provide ...
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... This design meets EN55022 Class B conducted EMI with >10 dB margin even with the output RTN directly connected to earth ground. Key Application Considerations PeakSwitch Design Considerations Output Power Table The data sheet maximum output power table (Table 1) represents PKS603-607 the maximum practical continuous output power level that can be obtained under the following assumed conditions: 1. The minimum DC input voltage is 100 V or higher for 85 VAC input, or 220 V or higher for 230 VAC input or single 100/115 VAC with a voltage doubler. 2. Efficiency of 70% for Y/F packaged devices, 75% for P ...
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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 skipping mode of operation used in PeakSwitch can generate audio frequency components in the transformer ...
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... PRI BIAS PRI D EN/UV BIAS Opto- coupler (a) Safety Spacing Capacitor PRI D PRI NC BIAS EN/UV GND BIAS coupler (b) PKS603-607 Maximize hatched copper areas ( ) for optimum heatsinking Y1- Output Output Filter Rectifier Capacitor T r SEC OUT Maximize hatched copper ...
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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 ...
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... Switching) PKS606 See Note A, B PKS607 PKS603-604 °C J PKS605-607 See Note PKS603-604 °C J PKS605-607 See Note C PKS603-607 (1,) = 25 ° oz. (610 g/m ) copper clad oz. (610 g/m ) copper clad Min Typ Max Units 250 277 304 kHz 16 62 ...
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... J PKS606 P di/dt = 255 mA/µ °C See Note E J PKS606 Y/F di/dt = 660 mA/µ °C See Note E J PKS607 Y/F di/dt = 800 mA/µ °C J PKS603 P di/dt = 200 mA/µ °C J PKS604 P/Y/F di/dt = 290 mA/µ °C J PKS605 P di/dt = 290 mA/µ °C J PKS605 Y/F di/dt = 325 mA/µ °C ...
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... 125 °C J See Note 375 6 ° See Note H EN/ 6 EN/UV See Note °C J See Figure 20 PKS603-607 Min Typ Max Units 0.75 × LIMIT(Min) 170 215 ns 150 ns 135 142 150 °C 75 °C 7.8 9.0 11.7 13.5 5.2 6.0 7.8 9.0 3 ...
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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 switching difficult to isolate the switching current from the supply current at the DRAIN ...
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... Figure 18. PeakSwitch General Test Circuit. Figure 19. Duty Cycle Measurement. 470 470 150 V 0.33 µF DC MAX (internal signal) EN/UV V DRAIN OSC Figure 20. Output Enable Timing. t (Blanking Time) LEB 0.8 I INIT(MIN) @ 100 °C I LIMIT(MIN) Figure 21. Current Limit Envelope. PKS603-607 PI-4317-030606 EN/UV PI-2364-012699 17 Rev. I 02/07 ...
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... Figure 27. C 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 125 Junction Temperature (°C) 1.4 1.2 1.0 0.8 0.6 0.4 0 Normalized di/dt Figure 25. Current Limit vs. di/dt. 1000 100 Scaling Factors: PKS603 1.0 PKS604 1.5 PKS605 2.0 PKS606 3.0 10 PKS607 4 100 200 300 400 500 Drain Voltage (V) vs. Drain Voltage. OSS 4 600 ...
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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 1 100 200 300 400 500 600 700 Drain Voltage (V) Drain Voltage. 800 1 Rev. I 02/07 ...
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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 1 .150 (3.81) Y07C MOUNTING HOLE PATTERN 20 Rev. I 02/07 PeakSwitch Product Family Series Number Package Identifier P Plastic DIP-8C Y Plastic TO-220-7C F Plastic TO-262-7C ...
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... Lead width measured at package body. 7. Lead spacing measured with the leads constrained to be .057 (1.45) perpendicular to plane T. .068 (1.73) (NOTE 6) .015 (.38) MINIMUM .008 (.20) .120 (3.05) .015 (.38) .140 (3.56) .300 (7.62) BSC .137 (3.48) (NOTE 7) MINIMUM .300 (7.62) .390 (9.91) PKS603-607 P08C PI-3933-100504 21 Rev. I 02/07 ...
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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 (1.40) .066 (1.68) .326 (8.28) .336 (8.53) .068 (1.73) MIN PIN 1 & 7 .024 (.61) .010 (.25) M .034 (.86) .012 (.30) .024 (.61) .050 (1.27) Notes: 1. Controlling dimensions are inches. Millimeter dimensions are shown in parentheses ...
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... PKS603-607 23 Rev. I 02/07 ...
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... PKS603-607 Revision Notes F 1) Final Release Data Sheet. Revised device symbol in Figures 1 and consistent with other PI documentation (added second G ground connection). Revised layout of Figure 17 (PI-4326). H Revised grounding in Figure 1 to match actual implementation. I Added PKS607. For the latest updates, visit our website: www.powerint.com Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS ...