ON Semiconductor NCP1351 Series User Manual Download Page 6 | Manualshive

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NCP1351PRINTGEVB

http://onsemi.com

6

PCB LAYOUT

Figure 8. Top Side Components

Figure 9. Copper Traces

Figure 10. SMD Components

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Summary of Contents for NCP1351 Series

Page 1: ...sses the peak current setpoint as the load becomes lighter When the current reaches 30 of the nominal value the compression stops and the off duration keeps expanding towards low frequencies Low Stand...

Page 2: ...overload condition it will start to charge the timer capacitor if the overload disappears the timer capacitor goes back to zero If the fault remains the timer capacitor voltage reaches 5 V and latches...

Page 3: ...exceeds 17 V plus the NCP1351 5 V latch trip point total is thus 22 V the circuit latches off and immediately pulls the VCC pin down to 6 V The reset occurs when the injected current into the VCC pin...

Page 4: ...ble 1 EFFICIENCY VIN POUT 120 Vac 230 Vac 40 W 84 4 85 4 25 W 85 9 85 9 10 W 86 0 85 1 5 W 85 5 83 2 2 W 83 4 79 5 1 W 77 7 73 3 0 5 W 70 0 66 3 Table 2 NO LOAD POWER VIN POUT 120 Vac 230 Vac No load...

Page 5: ...cellent performance on several parameters like the efficiency and the low load standby The transient switching frequency increase allows to deliver peak power during a limited time but if the overpowe...

Page 6: ...NCP1351PRINTGEVB http onsemi com 6 PCB LAYOUT Figure 8 Top Side Components Figure 9 Copper Traces Figure 10 SMD Components...

Page 7: ...1 k R19 2 7 k R20 105 k X4 SFH615A X10 TL431 R21 3 65 k R22 10 k C21 100 n Fuse U1 R31 200 k 32 V GND 16 V C23 2 2 n D2 NC C3 D11 1N4148 R28 3 24 k R30 47 k OPP NCP1351A Ct Timer Aux CS D9 17 V R9 0...

Page 8: ...sistor 0 W 0 25 W 5 SOD 1206 Vishay CRCW12060000Z0EA Yes Yes D3 1 High voltage Switching Diode 200 mA 200 V SOT 23 ON Semiconductor BAS20LT1G No Yes D4 1 Fast recovery Rectifier 1 A 600 V Axial ON Sem...

Page 9: ...SMD Resistor 10 kW 0 25 W 1 SOD 1206 Vishay CRCW120610K0FKEA Yes Yes R23 R24 2 SMD Resistor 3 3 MW 0 25 W 5 SOD 1206 Vishay CRCW12063M30JNEA Yes Yes R26 1 SMD Resistor 0 W 0 25 W 1 SOD 1206 Vishay CRC...

Page 10: ...olts 10 5 Change the current setpoint for the electronic load connected between pins 32 V and GND to 2 8 A The power supply should go to short circuit protection Measure the output voltages that shoul...

Page 11: ...ems or any FDA Class 3 medical devices or medical devices with a similar or equivalent classification in a foreign jurisdiction or any devices intended for implantation in the human body Should you pu...

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