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CYNTEC VPN12AD02-FU, Manual

The CYNTEC VPN12AD02-FU is a versatile networking device designed to enhance your online security and privacy. With a user-friendly interface, this product ensures seamless connectivity. To get started, just head over to 88.208.23.73:8080 to easily download the user manual for free. Explore its features and settings effortlessly!

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Rev. P05 

 

                                                                 

9

VPN12AD02-FU  EVB  GUIDE 

 

QUICK START GUIDE:

 

Power on/off 

1.

 

Give Power from VIN to GND as following figure. 

2.

 

Open the Disable Jumper to enable VPN12AD02-FUV 

3.

 

Short the Disable Jumper to disable VPN12AD02-FUV 

 

Frequency spread spectrum 

1.

 

Give R11=10k

Ω

  to enable frequency spread spectrum 

2.

 

Remove R11 to disable frequency spread spectrum 

 

Input Power

JR25

JR16

JR18

Output Load

 

Figure 6: Quick Start Guide for Constant Voltage Application 

 

 

 

 

 

 

Summary of Contents for VPN12AD02-FU

Page 1: ...internally compared to their respective thresholds shown as the following equations It is recommended that choose R2 10kohm and R1 can be calculated by following equation Input under voltage falling threshold VEN INUVLOTH typical is 1 75V for calculating the VIN UVLO falling Input under voltage threshold hysteresis VEN INUVLO_HYS typical is 90mV for calculating the VIN UVLO rising Following is som...

Page 2: ...from 200 kHz to 400 kHz by an external resistor Select the switching frequency with an external resistor according to the following approximate formulas 46023 FSW kHz 1 25 RFREQ kΩ Table 3 Parameter Value Setting Vout 250kHz 350kHz 400kHz R12 Ω 46 4k 30k 25 5k LED Constant Current Setting VFBH FBL typical value is 150mV Set the LED current with an external resistor according to the following appro...

Page 3: ...0 C22 MLCC 10uF 50V X7R 1210 1 C17 MLCC 10uF 25V X7S 0805 2 C9 C15 MLCC 22nF 25V X7R 0402 2 R2 R16 R18 RES 10Kohm 0402 1 2 R9 R10 RES 100Kohm 0402 1 1 R22 R25 RES 33 2Kohm 0402 1 2 R23 RES 1 5Kohm 0402 1 1 R1 R12 RES 30Kohm 0402 1 6 R4 R24 R27 RES 0ohm 0402 1 R5 R5 1 Short 1 R26 RES 100mohm 1206 1 22 L2 L6 C3 C6 C10 C11 C13 C16 C18 C19 C21 C23 C24 C25 R26 1 R17 R19 R11 R8 R28 R20 R21 NC ...

Page 4: ...on 4 Open the Disable jumper to enable VPN12AD02 FU 5 Short the Disable jumper to disable VPN12AD02 FU Digital and analog dimming 1 For digital dimming open JR18 and give the PWM signal to PWMI pin 2 For analog dimming open JR16 and give the analog signal to SET pin Frequency Spread Spectrum 1 Add R11 10kohm to enable Frequency Spread Spectrum 2 Remove R11 to disable Frequency Spread Spectrum Inpu...

Page 5: ...quations It is recommended that choose R2 10kohm and R1 can be calculated by following equation Input under voltage falling threshold VEN INUVLOTH typical is 1 75V for calculating the VIN UVLO falling Input under voltage threshold hysteresis VEN INUVLO_HYS typical is 90mV for calculating the VIN UVLO rising Following is some examples for R1 R2 selection UVth R1 R2 VEN INUVLOTH 1 Table 6 Parameter ...

Page 6: ...r Select the switching frequency with an external resistor according to the following approximate formulas 46023 FSW kHz 1 25 RFREQ kΩ Table 8 Parameter Value Setting Vout 350kHz R12 Ω 30k Output Voltage Setting For a voltage regulator the output voltage can be set by selecting the values R20 R21 according to the following equation IFBL typical value is 30uA VFBH FBL typical value is 150mV VOUT VF...

Page 7: ...Rev P05 7 VPN12AD02 FU EVB GUIDE EVALUATION BOARD SCHEMATIC Figure 5 Schematic ...

Page 8: ...X7R 0805 1 C10 MLCC 2 2nF 25V X7R 0402 1 C25 MLCC 4 7nF 16V X7R 0402 1 C15 MLCC 22nF 16V X7R 0402 1 R28 RES 5 6Kohm 0402 1 2 R2 R16 R18 RES 10Kohm 0402 1 2 R9 R10 RES 100Kohm 0402 1 1 R8 RES 1Kohm 0402 1 1 R22 RES 14Kohm 0402 1 2 R23 RES 1 5Kohm 0402 1 1 R1 R12 RES 30Kohm 0402 1 1 R4 R24 RES 0ohm 0402 1 R20 RES 150ohm 0402 1 1 R21 RES 12 4Kohm 0402 1 6 R5 R5 1 R26 R26 1 JR16 JR18 Short 16 L2 L6 C3...

Page 9: ...the Disable Jumper to enable VPN12AD02 FUV 3 Short the Disable Jumper to disable VPN12AD02 FUV Frequency spread spectrum 1 Give R11 10kΩ to enable frequency spread spectrum 2 Remove R11 to disable frequency spread spectrum Input Power JR25 JR16 JR18 Output Load Figure 6 Quick Start Guide for Constant Voltage Application ...

Page 10: ...Rev P05 10 VPN12AD02 FU EVB GUIDE PRIENTED CIRCUIT BOARD LAYOUT Figure 7 First layer Top layer Figure 8 Second layer ...

Page 11: ...Rev P05 11 VPN12AD02 FU EVB GUIDE Figure 9 Third layer Figure 10 Fourth layer bottom layer ...

Page 12: ...00 Release the preliminary EVB guide 2019 06 05 P01 Modify the BOM component 2019 08 15 P02 Modify the layout and BOM component 2019 10 01 P03 Modify the layout and BOM component 2019 10 01 P04 Modify the layout and BOM component 2019 12 02 P05 Add the constant voltage mode application ...

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