Powerbank Project Overview
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Table
| Process Step | Potential Failure Mode | Potential Failure Effect | Severity (S) | Occurrence (O) | Detectability (D) | RPN (Risk Priority Number) | Recommended Action |
|---|---|---|---|---|---|---|---|
| Power Conversion | IP5328P SOC failure | Power bank fails to operate | 9 | 3 | 2 | 54 | Use high-quality ICs, add redundancy |
| Charging Function | USB connectors (J1, J3, J4) fail | Unable to charge batteries | 8 | 4 | 3 | 96 | Ensure robust soldering, use ESD protection |
| Regulation Circuit | Capacitors (e.g., C19, C18) failure | Voltage fluctuations | 7 | 2 | 4 | 56 | Use capacitors with higher tolerance and proper derating |
| Communication | Data lines (e.g., D-, D+) short | Data transfer errors | 6 | 2 | 3 | 36 | Add line filtering, shielding, and proper layout design |
| Indicator Lights | LEDs (D1-D4) do not light | User misjudges device status | 4 | 3 | 5 | 60 | Use LEDs with higher reliability, add redundancy |
| Discharge Function | MOSFETs (e.g., Q1-Q4) failure | Improper load handling | 8 | 3 | 4 | 96 | Use MOSFETs with appropriate current rating, add heat sinks |
| Thermal Management | NTC thermistor (RNTC1) fails | Overheating of device | 9 | 2 | 3 | 54 | Regular thermal cycling tests, use more reliable thermistors |
| Power Distribution | Resistors (e.g., R7, R14) out of spec | Incorrect voltage division | 5 | 2 | 4 | 40 | Use precision resistors, perform regular calibration |
| Indicator Control | Button (SW1) failure | Cannot switch modes | 5 | 3 | 3 | 45 | Use tactile switches with higher cycle ratings |
Image
IP5328P. This IC is a fully integrated SoC (System on Chip) used for Power Delivery (PD) 3.0 fast charging, typically seen in power bank applications.J1, J2, J3, J4), resistors(R1, R5, R6, R7, R8, R9, R10, R12, R14), LEDs (D1, D2, D3, D4), transistors (Q1, Q2, Q3, Q4), capacitors (C1, C2, C3, C4, C5, C6, C7, C8, C9, C12, C13, C15, C16, C17, C18, C19, C20, CP1, CP2, CP3, CP4, CP6, CP10, CP14), the switch (SW1), and the inductor (L1).Table
| Capacitor | Capacitance | Voltage Rating | Status |
|---|---|---|---|
| C19 | 22µF | 10V (assumed) | OK |
| C18 | 22µF | 10V (assumed) | OK |
| C16 | 22µF | 10V (assumed) | OK |
| C17 | 22µF | 10V (assumed) | OK |
| C20 | 22µF | 10V (assumed) | OK |
| C12 | 100µF | undefined | WARNING: No voltage range specified |
Table
| Capacitor | Capacitance | Voltage Rating | Status |
|---|---|---|---|
| C13 | 10µF | 25V (assumed) | OK |
Markdown Table
| IC | Power Net | Voltage | Capacitor | Capacitance | Voltage Rating | Status |
|---|---|---|---|---|---|---|
| IP5328P | VSYS | 5V | C19 | 22µF | 10V (assumed) | OK |
| IP5328P | VSYS | 5V | C18 | 22µF | 10V (assumed) | OK |
| IP5328P | VSYS | 5V | C16 | 22µF | 10V (assumed) | OK |
| IP5328P | VSYS | 5V | C17 | 22µF | 10V (assumed) | OK |
| IP5328P | VSYS | 5V | C20 | 22µF | 10V (assumed) | OK |
| IP5328P | VSYS | 5V | C12 | 100µF | undefined | WARNING: No voltage range specified |
| IP5328P | VIN | 20V (max) | C13 | 10µF | 25V (assumed) | OK |
Notes:Mermaid
graph TD USB_Micro(J1: USB_B_Micro) -->|Power + Data| IP5328P(U1: IP5328P) USB_A_IN(J3: USB type A) -->|Power In| IP5328P USB_A_OUT(J4: USB type A) -->|Power Out| IP5328P TYPE_C(J2: 632723100011) -->|Power + Data| IP5328P IP5328P --|Power Delivery| VBUS(VBUS) IP5328P -->|Bi-directional PD| VING(VING) IP5328P --> VOUT1(VOUT1) IP5328P --> VOUT2(VOUT2) IP5328P -->|Sensing| RNTC1(RNTC1: NTCG204CH104JT1) SW1(SW1: TL3330AF260QG) -->|User Input| IP5328P Q1_MOSFET -->|Switch| VOUT2 Q2_MOSFET(Q2) -->|Switch| VBUS Q3_MOSFET -->|Switch| VOUT1 Q4_MOSFET(Q4) -->|Switch| VING LEDS -->|Indicators| D1_D4_LEDs(D1,D2,D3,D4: LEDs) IP5328P -->|Control Signal| LEDS R1 -->|Current Sensing| VMID(VMID) R1(R1: 0.01 Ohm) -->|Current Sensing| IP5328P Capacitors -->|Decoupling| IP5328P Capacitors(Capacitors: Various Values) -->|Energy Storage| VOUT1 & VOUT2 Inductors(L1: 2.2u Inductor) -->|Energy Storage for Switching| IP5328P
Plaintext
VIN (5V) +-----------------+ VOUT (3.3V) +---------->| VIN | | | | | | LT1117-3.3 | | | | +---------->| ADJ/GND | | | | | | VOUT |<------+-----> To Load (500mA max) +---------->| | | +-----------------+ | === 10uF -
Image
GND net for completeness.CP3 capacitor, judging from the provided information and typical circuit configurations, is likely intended for power line decoupling or filtering.CP3 would depend on its connections within the schematic. It is crucial to examine how this capacitor is connected within the circuit and which other components or nets it interfaces with. Without a detailed schematic or additional information on the component connections, this is the most accurate hypothesis I can provide.D, Source S, Gate G), the FETs are primarily used for two main functions:Reviews
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|---|---|---|
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|---|---|---|
Inspect
Powerbank board
Controls
Properties
Availability & Pricing
| Distributor | Qty 1 | |
|---|---|---|
| Arrow | $0.07 | |
| Digi-Key | $3.15–$5.10 | |
| LCSC | $7.15 | |
| Mouser | $6.27 | |
| TME | $0.64 | |
| Verical | $0.32–$0.44 | |
Assets
id=powerbank
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