Board-dat/OPM/OPM1168-dat/OPM1168-dat.md
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@@ -11,6 +11,10 @@ BQ51050 supports 4.2V lithium battery up to 1A charge management.
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- First two pads = + positive BAT
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- seconds two pads right = - negative GND
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+- [[coil-dat]] includes isolation pad, the side without the isolation pad should be face to the power transmitter coil.
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+
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+
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+
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## demo
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@@ -29,4 +33,4 @@ https://www.youtube.com/shorts/D4PBTednAjU
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- [[coil-dat]]
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-- [[OPM1168]] - [[OPN1168-fab]]
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+- [[OPM1168]] - [[OPM1168-fab]]
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Tech-dat/Interface-dat/USB-dat/CONN-USB-dat/CONN-USB-dat.md
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+
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+# CONN-USB-dat
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+
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+
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+- [[USB-A-dat]]
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+
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+- [[USB-B-dat]]
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+
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+- [[type-C-dat]]
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\ No newline at end of file
Tech-dat/Interface-dat/USB-dat/USB-A-dat/2025-10-10-18-23-34.png
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Tech-dat/Interface-dat/USB-dat/USB-A-dat/2025-10-10-18-26-34.png
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Tech-dat/Interface-dat/USB-dat/USB-A-dat/USB-A-dat.md
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# USB-A-dat
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-## Female
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+
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+![](2025-10-10-18-23-34.png)
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+
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+## type-A
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+
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+![](2025-10-10-18-26-34.png)
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+
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+
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+## type-A Female
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![](2024-05-09-18-00-58.png)
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-![](2024-05-09-18-01-18.png)
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+![](2024-05-09-18-01-18.png)
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+
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+
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+
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+## type-A male
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+
power-dat/battery-charger-dat/QI-dat/QI-dat.md
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@@ -0,0 +1,102 @@
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+
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+# QI-dat
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+
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+
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+
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+
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+## board
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+
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+- [[OPM1168-dat]] - [[OPM1167-dat]]
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+
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+
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+
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+
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+
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+## 🔋 What is Qi Wireless Charging?
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+**Qi** (pronounced *"chee"*) is a **wireless power transfer standard** developed by the **Wireless Power Consortium (WPC)**.
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+It allows devices such as smartphones, earbuds, and wearables to charge **without cables**, using **inductive power transfer**.
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+
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+---
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+
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+## ⚙️ How It Works
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+Qi charging uses **electromagnetic induction** between two coils:
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+- **Transmitter coil (Tx)** – in the charging pad/base.
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+- **Receiver coil (Rx)** – inside the device (e.g., phone or earbuds).
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+
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+### Process:
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+1. The charger creates an **alternating magnetic field**.
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+2. The receiver coil in the device converts it into **electrical energy**.
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+3. This energy is used to **charge the battery**.
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+
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+---
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+
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+## ⚡ Technical Details
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+
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+| Parameter | Typical Value | Notes |
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+| ------------------ | ------------- | --------------------------------- |
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+| **Frequency** | 110–205 kHz | For inductive power transfer |
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+| **Voltage Output** | 5V / 9V / 12V | Depending on power profile |
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+| **Power Levels** | 5W, 10W, 15W | Standard Qi power levels |
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+| **Efficiency** | ~70–85% | Depends on alignment and distance |
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+| **Distance** | ≤ 5 mm | Coil-to-coil gap must be small |
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+
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+---
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+
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+## 🧩 Qi Power Profiles
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+| Profile | Power | Usage |
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+| --------------------------------------- | ---------- | ------------------------------------- |
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+| **Baseline Power Profile (BPP)** | Up to 5W | Universal compatibility |
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+| **Extended Power Profile (EPP)** | Up to 15W | Fast wireless charging |
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+| **Future Qi2 (Magnetic Power Profile)** | Up to 15W+ | Magnetic alignment, higher efficiency |
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+
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+---
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+
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+## 🧲 Qi2 Standard (2023–2025)
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+The **Qi2** update introduces:
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+- **Magnetic Power Profile (MPP)** — based on Apple’s **MagSafe** design.
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+- **Automatic alignment** via magnets for higher efficiency.
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+- **15W fast charging** standardized for all brands.
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+- **Backward compatibility** with older Qi devices.
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+
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+---
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+
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+## ✅ Advantages
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+- No physical cable wear or connector damage.
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+- Water/dust sealing possible (no exposed port).
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+- Universal compatibility across many brands.
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+
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+---
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+
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+## ⚠️ Limitations
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+- Slower than wired fast charging.
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+- Requires precise coil alignment.
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+- Generates more heat.
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+- Charging distance is short (<5 mm).
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+
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+---
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+
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+## 📱 Common Qi-Compatible Devices
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+- Most modern **Android** phones (Samsung, Xiaomi, Huawei, etc.)
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+- **Apple iPhones** (iPhone 8 and later)
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+- **Wireless earbuds** with Qi charging cases
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+- **Smartwatches** (select models)
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+
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+---
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+
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+## 🧠 Tip
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+For best performance:
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+- Use **Qi-certified** chargers.
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+- Avoid **metal cases** or **thick covers** (>3 mm).
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+- Center the device properly on the pad.
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+- Keep the pad **cool and dust-free**.
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+
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+---
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+
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+## 🔌 Example Setup
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+```text
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+[Wall Adapter] → [Qi Charger Base (Tx Coil)] ⇄ (Inductive Field) ⇄ [Phone (Rx Coil → Battery)]
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+
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+```
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+## ref
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+
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+- [[wireless-charge-dat]] - [[TI-power-dat]]
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power-dat/battery-charger-dat/fast-charge-methods-dat/fast-charge-methods-dat.md
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@@ -11,7 +11,7 @@
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- [[FCP-dat]] - [[SCP-dat]] - [[VOOC-dat]] - [[PE-dat]] - [[AFC-dat]] - [[MTK-PE-dat]]
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-- [[wireless-charge-dat]]
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+- [[wireless-charge-dat]] - [[QI-dat]]
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- [[USB-FC-dat]] - [[USB-FC-trigger-dat]] - [[BC1.2-dat]] - [[Apple-2.4A-dat]] - [[DCP-dat]] - [[CDP-dat]] - [[SDP-dat]]
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power-dat/wireless-charge-dat/wireless-charge-dat.md
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@@ -5,9 +5,16 @@
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- [[BQ51013-dat]] - [[BQ51050-dat]] - [[TI-power-dat]]
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+
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+
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+
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+
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## standards
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-- [[WPC-1.2-dat]] - [[QI-wireless-charge-dat]]
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+
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+- [[QI-dat]] - [[QI-wireless-charge-dat]]
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+
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+- [[WPC-1.2-dat]]
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- [[fast-charge-methods-dat]]
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## ref
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+
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+- [[USB-dat]]
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+
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- [[wireless-charge]]
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