---
title: "USB Charging Module"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:USB_CHARGING_MODULE"
  data_integrity_hash: "333a457fd3902b47c120211bc59e68d0"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:USB_CHARGING_MODULE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/usb-charging-module.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/usb-charging-module"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "4.75-5.25 VDC, 0-2.4 A continuous, -20°C to +85°C ambient"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 5.8
    unit: "VDC"
    consequence: "Thermal runaway in MOSFET switching elements due to excessive power dissipation (P=I²R) exceeding package thermal resistance (θJA=50°C/W), dielectric breakdown in ceramic capacitors at &gt;6.3 VDC exceeding rated voltage (X7R dielectric)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Transient voltage spike &gt; 8 kV (IEC 61000-4-5 Level 4) on AC mains input"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated TVS diode (SMBJ5.0A) with 5.0 V clamping voltage and 600 W peak pulse power rating"
  - node_2:
      trigger: "Continuous output overload at 3.1 A exceeding CC mode limit"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Fold-back current limiting with 2.6 A hard limit and negative temperature coefficient (NTC) current derating above 100°C"
bom_nodes:
  power-conversion-circuit:
    type: "part"
    urn: "URN:CNFX:ME:POWER_CONVERSION_CIRCUIT"
    interface_type: "physical-logic-coupled"
  voltage-regulator:
    type: "component"
    urn: "URN:CNFX:ME:VOLTAGE_REGULATOR"
    interface_type: "physical-logic-coupled"
  current-limiter:
    type: "part"
    urn: "URN:CNFX:ME:CURRENT_LIMITER"
    interface_type: "physical-logic-coupled"
  usb-connector-ports:
    type: "component"
    urn: "URN:CNFX:ME:USB_CONNECTOR_PORTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - EU DIRECTIVE 2014/35/EU (LOW VOLTAGE DIRECTIVE)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/usb-charging-module.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a4ce96b74de63e9c6cb0e8c465a35fb394bee7cecb2a9542b5050e6c4cbcc2e1"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: USB Charging Module

## 1. Technical Definition
Electronic component that provides USB charging functionality within a smart home electrical outlet

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **4.75-5.25 VDC, 0-2.4 A continuous, -20°C to +85°C ambient**. Failure boundary: **Input voltage &gt; 5.8 VDC sustained for &gt;100 ms, junction temperature &gt; 150°C, output current &gt; 3.0 A continuous**, Mechanism: **Thermal runaway in MOSFET switching elements due to excessive power dissipation (P=I²R) exceeding package thermal resistance (θJA=50°C/W), dielectric breakdown in ceramic capacitors at &gt;6.3 VDC exceeding rated voltage (X7R dielectric)**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Transient voltage spike &gt; 8 kV (IEC 61000-4-5 Level 4) on AC mains input | 8 | Primary-side flyback controller IC latch-up, resulting in no output voltage | Integrated TVS diode (SMBJ5.0A) with 5.0 V clamping voltage and 600 W peak pulse power rating |
| Continuous output overload at 3.1 A exceeding CC mode limit | 8 | Over-temperature protection cycling (thermal shutdown at 165°C, reset at 140°C) | Fold-back current limiting with 2.6 A hard limit and negative temperature coefficient (NTC) current derating above 100°C |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Power Conversion Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/power-conversion-circuit.md) `(Standalone System)`
- [Current Limiter](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/current-limiter.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pick and Place Machine**, **Reflow Oven**, **Automated Optical Inspection System**  
**Downstream Applications**: Smart Home Electrical Outlets, USB Wall Chargers, Portable Power Banks  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What safety features does this USB charging module include?
**A**: The module includes current limiting, over-voltage protection, and short-circuit protection to ensure safe charging for connected devices.

### Q: How is this USB module integrated into smart home electrical outlets?
**A**: The compact PCB design allows for direct integration into outlet housings, connecting to standard electrical wiring while providing USB ports on the faceplate.

### Q: What devices are compatible with this USB charging module?
**A**: It supports standard USB-powered devices including smartphones, tablets, Bluetooth headphones, and other 5V electronics with appropriate current ratings.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - EU DIRECTIVE 2014/35/EU (LOW VOLTAGE DIRECTIVE)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: USB Charging Module](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/usb-charging-module)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: USB_CHARGING_MODULE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: d47b69af
