lnk500 Power Integrations, Inc., lnk500 Datasheet
lnk500
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lnk500 Summary of contents
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... LinkSwitch is specifically designed to replace low power linear transformer/RCC chargers and adapters at equal or lower system cost with much higher performance and energy efficiency. LNK500 is a lower cost version of the LNK501 with a wider tolerance output CC characteristic. LinkSwitch introduces a revolutionary patented topology for the design of low power ...
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... V - 4.7 V HYSTERETIC THERMAL SHUTDOWN COMPARATOR LOW FREQUENCY OPERATION Figure 3. Pin Configuration. DRAIN CURRENT LIMIT ADJUST CURRENT LIMIT COMPARATOR - + LEADING EDGE EDGE BLANKING SOURCE PI-3416-032603 LNK500 Package (DIP-8B) G Package (SMD-8B) PI-3417-111802 ...
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... I 3.8% LIM C characteristic C Frequency f OSC that depends on power f OSC(low the desired value Figure 4. CONTROL Characteristics Figure 5. Power Supply Outline Schematic. LNK500 Auto-restart CONTROL Current I C Auto-restart I I CD1 DCS CONTROL Current I C Auto-restart CONTROL Current I C PI-2799-112102 LinkSwitch ...
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... U1 current and VR1 slope resistance should be consulted to determine whether R5 is required arranged with collector connected to primary ground and emitter to the anode of D1. This connection keeps the opto in an electrically “quiet” position in the circuit. If the opto was LinkSwitch D S LNK500 ...
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... Tolerance envelope Inherent without optocoupler transition point characteristic without V O(MAX) Characteristic with Power supply peak output power curve Characteristic observed with load variation often applied during laboratory bench testing Output Current LNK500 Typical inherent optocoupler optocoupler PI-2790-112102 5 D 2/05 ...
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... LNK500 However, in laboratory bench tests often more convenient to test the power supply output characteristic starting from a low output current and gradually increasing the load. In this case, the optocoupler feedback regulates the output voltage until the peak output power curve is reached as shown in Figure 8. ...
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... LNK500 AWG C4 0.1 µF R1 100 V 20.5 kΩ 4.7 µF 400 V D5 1N4937 R2 100 Ω PI-3419-071304 200 300 400 Output Current (mA) LNK500 116 AWG 470 µF TIW 11DQ06 EE13 2.55 mH PERFORMANCE SUMMARY Output Power: 2.75 W ≥72% Efficiency: ...
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... LNK500 To aid the designer, the power table reflects these differences. For CV/CC designs the typical power column and for CV designs the minimum power column should be used, respectively. Additionally, figures are based on the following conditions: 1. The minimum DC input bus voltage higher. This corresponds to a fi ...
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... capacitor is required, it should be connected close to the transformer secondary output return pin(s) and the primary bulk capacitor negative return. Such placement will maximize the EMI benefit of the Y capacitor and avoid problems in common- mode surge testing. LNK500 requires a diode PIV 2/05 ...
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... LNK500 Quick Design Checklist As with any power supply design, all LinkSwitch designs should be verified on the bench to make sure that component specifications are not exceeded under worst case conditions. Note LinkSwitch circuit, the SOURCE is a switching node. This should be taken into consideration during testing. ...
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... OSC(LOW) J Frequency = °C OSC(LOW 1 °C C DCT °C J See Figure DCT °C C DCT J LNK500 (1, ° oz. (610 g/m ) copper clad oz. (610 g/m ) copper clad Min Typ Max 34 2.4 3.8 5.2 1.8 3.15 4 -0.45 -0 ...
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... LNK500 Parameter Symbol SHUTDOWN/AUTO-RESTART CONTROL Pin I Charging Current C(CH) I Control/Supply/ CD1 Discharge Current I CD2 Auto-Restart V Threshold Voltage C(AR) Auto-Restart V Hysteresis Voltage C(AR)hyst Auto-Restart Duty DC Cycle (AR) Auto-Restart f Frequency (AR) CIRCUIT PROTECTION Self-Protection I Current Limit LIM I f Coefficient Current Limit at I Auto-Restart LIM(AR) ...
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... ° See Note E specification by ramping the DRAIN pin voltage up to but not DSS to correlate to power supply output current (it is multiplied vs. DRAIN voltage (Figure 13) for low voltage operation characteristics. C LNK500 Min Typ Max Units 28 32 Ω µ ...
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... LNK500 Figure 12. LinkSwitch General Test Circuit 5. 1.6 1.2 0.8 0 DRAIN Voltage (V) Figure 13. I vs. DRAIN Voltage. C 120 100 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 CONTROL Pin Voltage (V) Figure 15. CONTROL Pin I-V Characteristic 2/05 750 Ω 10 kΩ 0.22 µF 80 100 Figure 14. Duty Cycle Measurement. ...
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... Figure 19. Current Limit vs. Temperature. 1.200 1.000 0.800 0.600 0.400 0.200 0.000 - Junction Temperature (°C) Figure 21. I vs. Temperature. DCT Figure 18. Switching Frequency vs. Temperature. Figure 20. I 100 150 Figure 22. PWM Gain vs. Temperature. LNK500 1.200 1.000 0.800 0.600 0.400 0.200 0.000 - 100 Junction Temperature (°C) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 ...
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... LNK500 Typical Performance Characteristics (cont 2/05 300 =25 °C T CASE =100 °C T 250 CASE 200 150 100 Drain Voltage (V) Figure 23. Output Characteristics (DRAIN Current vs. DRAIN Voltage). 10 ...
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... Minimum metal to metal spacing at the package body for the omitted lead location is .137 inch (3.48 mm). 6. 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 (NOTE 7) .300 (7.62) .390 (9.91) LNK500 P08B PI-2551-121504 17 D 2/05 ...
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... LNK500 ⊕ .004 (.10) -E- .240 (6.10) .260 (6.60) Pin 1 .100 (2.54) (BSC) .367 (9.32) -D- .387 (9.83) .125 (3.18) .145 (3.68) .032 (.81) .048 (1.22) .037 (.94) .053 (1.35 2/05 SMD-8B .137 (3.48) MINIMUM .372 (9.45) .388 (9.86) ⊕ .010 (.25 .046 .060 Pin 1 .086 .186 Solder Pad Dimensions .057 (1.45) .068 (1.73) (NOTE 5) .004 (.10) .009 (.23) ...
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... LNK500 19 D 2/05 ...
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... LNK500 Revision Notes B 1) Released Final Data Sheet Added lead-free ordering information Minor error and formatting corrections. 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 ...