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https://cdn2.flux.ai/flux-comment-files/files/commentFileId-63d15f97b15b679e583e...
moetaz1

moetaz1

@copilot this is a full bridge rectifier to convert AC current to Dc current , what is the best diodes to use
2y

copilot

For a full bridge rectifier that converts AC current to DC current, selecting the best diodes depends on a few key parameters related to your application, such as the input voltage, current requirements, and thermal considerations. Without specific details, I will assume a common scenario and make some general recommendations.
General Recommendations:
  1. 1N400x Series: This is a very popular series for rectification purposes. The "x" in 1N400x stands for a number from 1 to 7, which relates to the reverse voltage rating of the diode. For instance, 1N4001 is rated for 50V while 1N4007 is rated for 1000V. Depending on your voltage requirements, you can choose accordingly. Typically, for most low to medium voltage applications (up to 1000V), these diodes are sufficient. They are also capable of handling forward current of up to 1A which is suitable for a wide range of applications.
  2. BYV Series: For higher current applications, you might consider the BYV series, such as BYV27 (fast recovery diode) which can handle larger currents and have reverse voltage ratings up to 1200V. This series is suitable if you need a fast recovery time, which is particularly useful in high-frequency rectification.
  3. Schottky Diodes: For applications where efficiency is key, and lower forward voltage drop is desired, Schottky diodes might be the right choice. For example, the 1N5819 Schottky diode has a low forward voltage drop and quick switching capabilities, but it is limited to lower reverse voltages (about 40V) and current (1A).
Assumptions:
  • Your application does not exceed a reverse voltage of 1000V.
  • You are looking for diodes capable of handling currents up to 1A for standard applications or higher for specific requirements.
  • Efficiency and speed are considerations but within the bounds of commonly available diodes.
Application Example:
Considering these parameters, if you're designing a typical low-power full bridge rectifier circuit using Flux to work with mains voltage (in countries where this is approximately 120V or 230V RMS), the 1N4007 could be a good choice due to its high reverse voltage rating, ensuring it can handle peak voltages comfortably. However, if your application requires handling higher currents, looking into diodes like the BYV27 or even considering a more specialized component based on the exact specifications might be necessary.
Remember, always check the diodes' datasheets for detailed specifications to ensure they meet your application's needs, including thermal characteristics, forward current rating, and reverse voltage rating. Additionally, consider using heat sinks if your application involves high current flow through the diodes, resulting in significant power dissipation.
2y
moetaz1

moetaz1

@copilot my application is to design a receiver of a wireless charger , the the reciever wil get a stable 15 w , with a maximum voltage of 9 volts
2y

copilot

For a wireless charger receiver that's supposed to handle a stable output power of 15W with a maximum voltage of 9 volts, your primary consideration would be efficiency and thermal performance since the system is compact and any inefficiency could lead to unacceptable heating. Given these requirements, especially the relatively low voltage and the need for efficiency, Schottky diodes seem like a suitable choice due to their lower forward voltage drop compared to traditional silicon diodes.
Recommended Diode Specification:
  • Schottky Diodes: Considering the voltage and power requirements, a Schottky diode such as the 1N5822 could be a good fit. This diode supports up to 40V reverse voltage, which is well above your maximum voltage requirement, and has a forward current capability of 3A, comfortably above the current your system would require to deliver 15W at 9V (approximately 1.67A). The low forward voltage drop (approximately 0.3-0.5V at 1.67A) will help in maintaining the efficiency of your receiver.
Key Considerations:
  1. Efficiency: Schottky diodes are preferred in power-sensitive applications due to their lower forward voltage drop, resulting in less power loss compared to standard diodes. This is critical in wireless charging systems where efficiency impacts charging speed and heat generation.
  2. Thermal Management: Despite their efficiency, Schottky diodes still dissipate heat (power = current x voltage drop across the diode). Ensure your design accommodates adequate heat dissipation, possibly through PCB layout and thermal vias if your application packaging allows.
  3. Reverse Leakage Current: One downside of Schottky diodes is their higher reverse leakage current, especially at higher temperatures. This shouldn't be a major issue for your application but is worth keeping in mind during the design phase, particularly if your design spends significant time exposed to high ambient temperatures.
  4. Protection and Safety: Incorporate proper safety measures, especially in a wireless charging application. This includes but is not limited to reverse polarity protection, overvoltage protection, and ensuring that the diode's maximum ratings are not exceeded during transient conditions.
Design Implementation in Flux:
In your Flux project for the wireless charger receiver:
  • Consider implementing a rectifier setup using four 1N5822 Schottky diodes arranged in a full bridge configuration.
  • Ensure the layout minimizes the distance between diodes and the rest of the rectification circuit to reduce potential power loss due to PCB trace resistance.
  • Incorporate thermal management practices in the PCB design, such as adequate spacing, thermal reliefs, and possibly adding heat sinks if the design calls for it.
By focusing on these considerations, you can design a highly efficient and compact wireless charger receiver that meets your application's requirements.
2y
moetaz1

moetaz1

@copilot in a wireless charger receiver , do i need to have an Ic like the transmitter
2y

copilot

In a wireless charging system, both the transmitter (charging pad) and receiver (built into the device being charged) incorporate sophisticated circuitry to manage the power transfer effectively. While the specific components can vary based on the charging standard (e.g., Qi wireless charging standard) and the power requirements, both sides generally incorporate dedicated ICs (Integrated Circuits) that perform several critical functions.
Receiver-Side IC:
On the receiver side of a wireless charging system, an IC is typically used to perform a variety of functions:
  1. AC to DC Rectification: The IC may work in conjunction with external rectifier diodes (like the Schottky diodes discussed earlier) to convert the AC power received from the transmitter’s inductive coil to DC power suitable for charging the battery.
  2. Control and Regulation: It regulates the voltage and current received to ensure safe charging of the battery. This includes managing the charging curve for Li-ion batteries, which requires precise control to safely charge the battery without overheating or overcharging.
  3. Communication: Wireless charging standards, such as Qi, require communication between the transmitter and receiver to negotiate power levels, ensure compatible devices are being used, and provide status information (like charging status). The receiver IC plays a crucial role in this bidirectional communication.
  4. Efficiency Optimization: Some ICs are designed to optimize the power transfer efficiency, managing factors like alignment and distance between coils by adjusting the resonant frequency or implementing power control algorithms.
  5. Safety Protections: Includes features like overvoltage, overcurrent, and temperature monitoring to ensure safe operation of the charging system.
Example ICs for Receiver Side:
  • BQ51013B: An integrated Qi-compliant wireless power receiver IC from Texas Instruments, which offers an integrated rectifier and voltage conditioner, and is capable of up to 5W power delivery.
  • P9025ACP: An IDT wireless power receiver IC designed for compact applications, delivering up to 5W of power, and integrating a full-bridge rectifier and LDO (Low Drop-Out regulator) for efficient power conversion and regulation.
When designing a wireless charger receiver in Flux, integrating a receiver IC is essential for ensuring efficient, safe, and compliant operation. Whether your design aims to meet the Qi standard or another proprietary solution, selecting a suitable IC is a critical step.
Design Considerations in Flux:
While designing your wireless charger receiver in Flux, it’s important to consider the following:
  • IC Selection: Choose a receiver IC that meets your power requirements and is compatible with the transmitter’s protocol.
  • Ancillary Components: Beyond the IC and rectifier diodes, include necessary components such as capacitors and inductors recommended in the IC datasheet for optimal performance.
  • PCB Layout: Pay careful attention to the layout, particularly the coil’s placement relative to the IC and other components to minimize losses and ensure efficient power transfer.
In conclusion, much like the transmitter side, a dedicated IC on the receiver side is crucial for managing the complexities of wireless power transfer, ensuring not just functionality but also safety and efficiency.
2y
moetaz1

moetaz1

@copilot can you draw me a schematic of a wireless charger receiver
2y

copilot

While I can't create or display visual content directly, I can certainly guide you through the process of drafting a basic schematic of a wireless charging receiver using components we've previously discussed. Let's outline a simple schematic in textual format, focused on a Qi wireless charging standard receiver for low-power applications (up to 15W):
Basic Components of a Wireless Charger Receiver:
  1. Rectifier Diodes (D1 - D4): Using Schottky diodes for efficient AC to DC conversion.
  2. Receiver IC (U1): A Qi-compliant wireless power receiver IC, such as the BQ51013B.
  3. Li-ion Battery Charging IC (U2): For managing the charging of the battery (e.g., BQ24190).
  4. Inductive Charging Coil (L1): The receiver coil that captures the electromagnetic field from the transmitter.
  5. Capacitors:
    • C1, C2: Input capacitors for filtering (connected across the outputs of the rectifying circuit).
    • C3: Bypass capacitor for the receiver IC.
    • C4: Output capacitor for the battery charging IC.
  6. Resistors:
    • R1: Current sense resistor for the battery charging IC (value as per the datasheet to set the desired charging current).
Schematic Description:
  1. Inductive Coil and Rectification Stage:
    • Connect L1 (the receiving coil) to the input of the full bridge rectifier made up of D1 to D4 (Schottky diodes arranged in a full-bridge configuration).
    • The positive output of the bridge rectifier connects to C1 and C2 (input capacitors for filtering) and then to VIN of U1 (Receiver IC).
    • The ground of the bridge rectifier connects to the system ground.
  2. Receiver IC:
    • U1's OUT pin connects to C3 (bypass capacitor) and the input of U2 (Battery Charging IC).
    • U1's GND pin is connected to the system ground.
  3. Battery Charging IC:
    • U2's BAT pin connects to the Li-ion Battery's positive terminal.
    • Place R1 between U2's SYS pin and ground to set the charging current based on U2's datasheet.
    • Connect C4 (output capacitor) between U2's BAT pin and ground.
  4. Charging Output:
    • The negative terminal of the Li-ion battery connects to the system ground.
This description provides a basic framework for a wireless charger receiver. When implementing this in Flux or any other circuit design software, ensure you refer to the datasheets of the specific components for detailed wiring instructions, recommended component values, and layout guidelines. Also, keep in mind considerations like coil alignment, efficiency optimization, thermal management, and electromagnetic compatibility (EMC).
2y
moetaz1

moetaz1

@copilot do U1 needs to be related to the optiga trust charge M , to the authentication
2y

copilot

Integrating an authentication mechanism like the Optiga Trust Charge into your wireless charger receiver design is an excellent method to ensure that the device being charged is authorized and meets the necessary specifications or standards. This approach is especially relevant in contexts where safety, device integrity, and intellectual property concerns are paramount. The Optiga Trust Charge is designed to authenticate the power receiver before allowing high-power charging, which can mitigate risks associated with counterfeit or incompatible devices.
Integrating Optiga Trust Charge with Receiver IC (U1):
  1. Communication Interface: The Optiga Trust Charge typically communicates with the main processor or microcontroller in your device through a standard communication interface, such as I²C. Ensure that U1 (the Receiver IC) or an associated microcontroller in your design supports this communication protocol and has available I/O pins for this purpose.
  2. Authentication Process:
    • During the initial negotiation phase between the wireless charger receiver and the transmitter, the receiver can leverage the Optiga Trust Charge to perform cryptographic authentication.
    • The authentication outcome can then determine whether the device is allowed to proceed with high-power charging or restrict it to a lower power or even deny charging altogether, based on the system's design.
  3. System Integration:
    • Modify the Receiver IC Connection: The Receiver IC (U1) needs to be part of a system capable of handling the authentication process. If U1 doesn't directly support authentication or communication with Optiga Trust Charge, an additional microcontroller may be necessary to facilitate this. The microcontroller would read the authentication status from the Optiga Trust Charge over I²C and control the charging process accordingly.
    • Integration Steps:
      • Connect the SDA and SCL lines of the Optiga Trust Charge to the microcontroller or directly to U1, if supported, ensuring proper pull-up resistors are in place for the I²C bus.
      • The microcontroller, upon successful authentication through the Optiga Trust Charge, could then enable or disable the charging functionality of U1 via a GPIO pin or through a software command, depending on the specific capabilities of the Receiver IC.
  4. Security and Protocol Considerations: Implementing authentication requires careful attention to security protocols and key management. The Optiga Trust Charge comes with built-in security features tailored for these applications, but integrating it into your design will necessally involve planning for secure communication within your device.
Example Schematic Modification:
  • Microcontroller (MCU1): Add a microcontroller that can handle I²C communication. Connect its SDA and SCL to the Optiga Trust Charge.
  • Connect MCU1 to U1: If U1 allows for control based on external inputs, connect a GPIO from MCU1 to a control pin on U1 to enable/disable charging based on authentication status.
In Flux, while detailing your schematic, ensure precise representation of communication lines between the Optiga Trust Charge, any intermediary microcontroller, and the Receiver IC. Including clear labeling and notes on the schematic can help clarify the purpose and functionality of each connection in the context of authentication control.
2y
moetaz1

moetaz1

Image

Image

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2y
1
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
    jharwinbarrozo
    1.1M

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