LNK574 POWERINT [Power Integrations, Inc.], LNK574 Datasheet
LNK574
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LNK574 Summary of contents
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... Output Power Table 230 VAC ±15% Product 4 Open Adapter 2 Frame 3 LNK574DG Table 1. Output Power Table. Notes: 1. IEC 62301 Clause 4.5 rounds standby power use below zero. 2. Typical continuous power in a non-ventilated enclosed adapter measured at +50 °C ambient. 3. Maximum practical continuous power in an open frame design with adequate heatsinking, measured at 50 ° ...
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... LNK574 BYPASS/ MULTI FUNCTION (BP/M) GENERATOR FEEDBACK REF 1. 1.37 V OPEN LOOP PULL UP FEEDBACK (FB CUT BACK 1. 0.9 V POWER DOWN COUNTER 160 f OSC CYCLES 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. ...
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... V) depending on the load, a low logic level (disable) is generated at the output of the feedback circuit. This output is www.powerint.com LNK574 sampled at the beginning of each cycle. If high, the power MOSFET is turned on for that cycle (enabled), otherwise the power MOSFET remains off (disabled). Since the sampling is ...
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... The power down (PD) mode duty cycle and the no-load power 5.1 Ω EF16 C2 3.3 µF 3.3 µF 400 V 400 V D5 1N4148 LinkZero- LNK574DG 82 kΩ R1 4.7 kΩ 9.09 kΩ 220 1 220 pF 100 350 330 µF SS15 16 V ...
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... DRAIN pin at turn off. This can be achieved by using an RCD clamp or a Zener (~200 V) and diode clamp across the primary winding. In all cases, to minimize EMI, care should be taken to minimize the circuit path from the clamp components to the transformer and LinkZero-LP (U1). LNK574 (~3 V) determines BPPDRESET BP(PU) ), FEEDBACK Pin Noise Filter ...
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... LNK574 FB2 – Figure 5. PCB Layout 350 mA Charger. Thermal Considerations The copper area underneath the LinkZero-LP (U1) acts not only as a single point ground, but also as a heatsink connected to the quiet source node, this area should be maximized for good heat sinking of U1 ...
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... Absolute Maximum Ratings (1,6) DRAIN Voltage .................................. ......... ..............-0 700 V Peak DRAIN Current LNK574 ..............................200 (375) mA Peak Negative Pulsed Drain Current ................... ......... -100 mA Feedback Voltage ................................................. ....... -0 Feedback Current ................................................. .............. 100 mA BYPASS Pin Voltage ...................................... ............. -0 BYPASS Pin Voltage in Power Down Mode ........ -0 Storage Temperature ...................................... ..... -65 °C to 150 °C Operating Junction Temperature................. .... -40 ° ...
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... LNK574 Parameter Symbol Control Functions (cont.) Minimum Switch t ON-Time ON(MIN DRAIN Supply Current BYPASS Pin CH1 Charge Current I CH2 BYPASS Pin Voltage V BP BYPASS Pin V Voltage Hysteresis BP(H) BYPASS Pin BP Shunt Voltage SHUNT Circuit Protection Current Limit I LIMIT Power Coefficient ...
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... 100 ° ° 6 ° VAC See Note D See Figure 8 and maximum operating junction temperature. DSS at BP voltage. SD SHUNT LNK574 Min Typ Max Units 700 145 Rev. B 12/07/10 ...
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... LNK574 0.1 µF Figure 6. General Test Circuit. Figure 7. Duty Cycle Measurement. 10 Rev. B 12/07/10 BP 470 Ω MAX (internal signal DRAIN OSC Figure 8. Output Enable Timing. 100 -100 Time (ms) Figure 9. Peak Negative Pulsed DRAIN Current Waveform. ...
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... Time (ms) Figure 14. BYPASS Pin Start-up Waveform (C BP www.powerint.com 75 100 125 150 Figure 11. Frequency vs. Temperature. 100 150 Figure 13. FEEDBACK Pin Voltage vs. Temperature. 0.8 1.0 Figure 15. Output Characteristics. = 0.22 mF). LNK574 1.2 1.0 0.8 0.6 0.4 0.2 0 -50 - 100 125 Junction Temperature (°C) 1.1 1.0 0.9 -50 - 100 125 150 Temperature (° ...
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... LNK574 Typical Performance Characteristics (cont.) 1000 100 100 200 300 400 Drain Voltage (V) Figure 16. C vs. Drain Voltage. DSS 1.8 1.7 1.6 1.5 1.4 1 100 Output Load (%) Figure 18. FEEDBACK Pin Regulation Voltage Threshold vs. Output Load in CV Mode -10 -12 -14 ...
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... Typical Performance Characteristics (cont.) 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 200 400 600 800 1000 1200 1400 Power Down Off-Time (ms) Figure 22. Power Down Off-Time vs. BYPASS Pin Capacitor. V Start at 5.85 V (Temperature = 25 °C) BP www.powerint.com LNK574 -50 - Temperature (°C) Figure 23. Typical Drain Current vs. Temperature in Power Down Mode ...
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... LNK574 B 4 4.90 (0.193) BSC 3.90 (0.154) BSC 0.10 (0.004 Pin 1 ID 1.27 (0.050) BSC 1.25 - 1.65 1.35 (0.053) 1.75 (0.069) (0.049 - 0.065) 0.10 (0.004) 0.25 (0.010) Reference Solder Pad Dimensions 2.00 (0.079 D07C 1.27 (0.050) Part Ordering Information LNK 574 Rev. B 12/07/10 SO-8C (D Package) 0.10 (0.004 SEATING PLANE 6 ...
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... Notes LNK574 15 Rev. B 12/07/10 ...
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Revision Notes A Internal release. B Updated text and parameter tables. 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 ...