DIODES EV3 Class A Charger Board User Manual

: July 31, 2024
: DIODES

Table of Contents

DIODES EV3 Class A Charger Board
Product Information
Product Usage Instructions
Chapter 1. Summary
Chapter 2. Power Supply Specification
Chapter 3. Schematic
Chapter 4. The Evaluation Board (EVB) Connections
Chapter 5. Testing the Evaluation Board
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

DIODES EV3 Class A Charger Board

Specifications :

Product: QC4/4+ 27W Class A Charger EV3 Board
Release: 1.0
Supports: USB PD3.0 Function and PPS (3V11V@20mV)
Efficiency: Meets DOE level 6 and CoC Tier 2 Efficiency Requirements

Product Information

General Description :
The QC4/4+ 27W Class A Charger EV3 Board is a high-quality charging solution designed for efficient power delivery.

Key Features:

SSR Topology Implementation with Opto-coupler for Accurate Step Voltage Controlling
Supports USB PD3.0 Function and PPS (3V11V@20mV)
Meets DOE level 6 and CoC Tier 2 Efficiency Requirements

Applications :
The EV3 Board is suitable for various applications requiring precise voltage control and efficient power delivery.

Main Power Specifications (CV & CC Mode):
The board operates in both Constant Voltage (CV) and Constant Current (CC) modes to ensure optimal charging performance.

Product Usage Instructions

Power Supply Specification:
Detailed specifications and test results are provided to ensure compliance with industry standards.
EV3 Board Schematic:
Refer to the schematic diagram for a detailed overview of the board’s internal components and connections.
Evaluation Board (EVB) Connections:
Follow the EVB PCB Layout guide for proper connections and setup before testing the board.
Testing the Evaluation Board:
Test input and output characteristics, including standby power, efficiency, and performance in different modes such as CV & CC, QC Series Compatible Mode, etc.

FAQ :

Q: What are the key features of the QC4/4+ 27W Class A Charger EV3 Board?
A: The board features SSR Topology Implementation with Opto-coupler for Accurate Step Voltage Controlling, supports USB PD3.0 Function and PPS, and meets DOE level 6 and CoC Tier 2 Efficiency Requirements.

QC4/4+ 27W Class A Charger EV3 Board User Guide

Chapter 1. Summary

General Description
The 27W QC4 Class A charger Evaluation Board EV3 is composed of three main parts, AP3302A offers the QR PWM switching control & working under the DCM mode with peak current controlling, APR345 is a Synchronous Rectification Controller, and the CY2312 is USB PD and Qualcomm Quick Charge 4 Controller for implementing quick charger decoder functions. Based on monitoring D+ & D- and CC1 & CC2 signals, CY2312 will interprets desired voltage and current setting, and then feedback information to primary side AP3302A controller for providing well-regulated voltage and current as well as related power protections.

key Features

System Key Features
- SSR Topology Implementation with an Opto-coupler for Accurate Step Voltage Controlling
- Supports the USB PD3.0 Function and PPS (3V-11V@20mV)
- Meet DOE level 6 and CoC Tier 2 Efficiency Requirements
- <75mW No-Load Standby Power
AP3302A Key Features
- Quasi-Resonant Operation with Valley Lock under all Lines and Load Conditions
- Switching Frequency: 22kHz-120kHz
- Non-audible-noise QR Controlling
- Soft Start Process during the Start-up Turn-on Moment
- During the burst mode operation and Low start-up operating quiescent currents, 75mW standby power can be achieved
- Built-in Jittering Frequency Function which is the EMI emission can be improved
- Internal Auto Recovery OCP, OVP, OLP, OTP Power Protection, cycle by cycle current limit, also with DC polarity & transformer short and Brown out Protection
APR345 Key Features
- Synchronous Rectification Working at DCM, CCM and QR Flyback
- Eliminate Resonant Ringing Interference
- Fewest External Components used
CY2312 Key Features
- Compliant with USB Type-C Rev 1.2
- Compliant with USBPD Rev.3.0 V1.1
- USB PD 3.0 v1.1 (PPS)
- Support QC4+
- Support non-USBPD Quick Charge
- BC1.2 DCP
- Apple Legacy built-in
- Built in CC/CV controller
- Built in Vconn switch, support E-marker cable detection
- Programmable OVP/UVP/OCP/OTP with auto-restart
- Internal Discharge MOS
- Programmable Cable Compensation
- Support fast VBUS fast turn off without external components
- Low standby current below 600uA
- High side current sense
- ttp://www.canyon-semi.com.tw/products.php

Applications
QC4 Wall Chargers

Main Power Specifications (CV & CC Mode)

Parameter	Value
Input Voltage	90Vac to 264Vac

Input standby

power

Evaluation Board Picture

Chapter 2. Power Supply Specification

Specification and Test Results

Parameter| Test conditions| Min| Nom| Max| Eff /DOE

Level VI

| Eff /CoC

V5 Tier2

| Test Summary
---|---|---|---|---|---|---|---
VACIN Input Voltage| –| 90 VRMS| 115/230| 264 VRMS| –| –| –
FLINE Frequency| –| 47Hz| 50/60| 64Hz| –| –| –
IIN Input Current| –| –| –| 1.5 ARMS| –| –| Pass
No load Pin| At 230Vac/50Hz, @ 5V, Pin < 75mW| ****

–

| ****

–

| ****

75mW

| ****

–

| ****

–

| Pass, 230Vac: 57.17mW
3VDC / 3A @115Vac/230Vac Average efficiency| ****

Board end

| ****

–

| ****

3V / 3A

| ****

–

| ****

77.96%

| ****

78.23%

|

Pass, 115Vac: 82.6%
230Vac: 81.1%

5VDC / 3A @115Vac/230Vac Average efficiency| ****

Board end

| ****

–

| ****

5V/3A

| ****

–

| ****

81.39%

| ****

81.84%

|

Pass, 115Vac: 86.5%
230Vac: 87.5%

5VDC / 3A @115Vac/230Vac 10% efficiency| ****

Board end

| ****

–

| ****

5V/0.3A

| ****

–

| ****

–

| ****

72.48%

|

Pass, 115Vac: 82.8%
230Vac: 82.9%

9VDC / 3 @115Vac/230Vac Average efficiency| ****

Board end

| ****

–

| ****

9V/3A

| ****

–

| ****

86.62%

| ****

87.30%

|

Pass, 115Vac: 89.4%
230Vac: 89.1%

9VDC / 3A @115Vac/230Vac 10% efficiency| ****

Board end

| ****

–

| ****

9V/0.3A

| ****

–

| ****

–

| ****

77.3%

|

Pass, 115Vac: 84.9%
230Vac: 82.3%

12VDC / 2.25A @115Vac/230Vac Average efficiency| ****

Board end

| ****

–

| 12V/2.25 A| ****

–

| ****

86.62%

| ****

87.30%

|

Pass, 115Vac: 89.1%
230Vac: 89.0%

Compliance

Parameter| Test conditions| Min| Nom| Max| Test Summary
---|---|---|---|---|---
Standby Power (mW)| 5V Output| –| –| 75mW| Pass
Output Voltage Tolerance| 3V/0-3A| | 3V| | Pass
Output Voltage Tolerance| 5V/0-3A| 4.75V| 5V| 5.25V| Pass (of 60mohm Cable end)
Output Voltage Tolerance| 9V/0-3A| 8.55V| 9V| 9.45V| Pass (of 60mohm Cable end)
Output Voltage Tolerance| 12V/0-2.25A| 11.4V| 12V| 12.6V| Pass
Output Connector| USB Type C| –| –| –|
Temperature| 90Vac , 9V / 3A| –| –| –| Pass
Dimensions (W /D/ H)| 40mm x 40mm x 25mm| –| –| –| –
Safety| IEC/EN/UL 60950

Standard

| –| –| –| –
EMI/EMC| FCC/EN55022 Class B| –| –| –|

Chapter 3. Schematic

EV3 Board Schematic

Bill of Material (BOM)

Power Main Board

Bill of Material for Power Main Board

Designator| Comment| Designator| Comment| Designator| Comment
BD1| MSB30KH| CY1| 470pF/Y1| R10| 100kΩ/0603
C1, C2| 15µF/400V| D1| RS1M| R13, R16| 1.8MΩ/1206
C3| 10nF/630V| D2, D5| S07M| R14A| 51Ω/1206
C4| 100pF/50V/0603| D3,| 1N4148WS| R36| 10Ω/0805
C5, C13| 2.2nF/250V/0805| F1| T2AL/250VAC| R22| 47kΩ/0603
C6, C7| 2.2µF/100V/1206| L2| 220µH| R29, R30| 0.82Ω/1206
C8| 680µF/16V| LF1| 10mH| R38| 10Ω/0603
C12| 4.7µF/50V/1206| Q1| DMJ65H650SCTI, TO220| R39| 110K//0603
C10| 22µF/400V| Q2| DMTH10H010LCT| T1| TRANS-RM8
C17| 1nF/200V/0805| Q3| DMN24H3D| U4| APR345
C23| 100nF/50v/0603| R3, R4| 100kΩ/1206| ZD1| 15V Zener
C22| 27nF/50V/0603| R8, R12| 2Ω/0603| |
Note:

Controller Daughter Board (EV3)

Bill of Material for Daughter Board

Designator| Comment| Designator| Comment| Designator| Comment
C9, C11, C32| 4.7µF/50V/1206| R11, R17, R26| 1kΩ/0603| D4, D6| 1N4148WS
C18, C21, C31| 100nF/50V/0603| R15| 51Ω/0805| Q4, Q5| DMP2007UFG
C20| 27nF/50V/0603| R18| 10Ω/0805| TVS1, TVS2， TVS3, TVS4| DESD5V0S1BA
C24, C25| 560pF/50V/0603| R19| 10mΩ 1206(1W)| U2| EL1019 / LTV-1009
C26, C27| 10pF/50V/0603| R20, R24| 10kΩ/0603| U3| AP3302A
C29| 220pF/50V/0603| R25| 200kΩ/0805| U5| CY2312–QFN16
C30| 100PF/50V/0603| R23| 91kΩ/0603| CN1| TYPE C RECEPTACLE
C15| 68nF/50V/0603| R32| 49.9kΩ/0603| |
R5| 100kΩ/0603| NTC1| 10kΩ NTC (N/A)/0603| |
R2, R27, R31, R33, R34| 0Ω/0603| R9, R21, C16, C19,| N/A /0603| |
Note:

Current sense resistor (R19) use the Low TCR type (Reference Type: SMF12M1FR010T “http://www.sartfuse.com”).

Schematics Description

AC Input Circuit & Differential Filter
There are three components in the section. The Fuse F1 protects against over- current conditions which occur when some main components failed. The LF1 is a common mode chock for the common mode noise suppression filleting because of the each coil with large impedance. The BD1 is rectifier, and basically converts alternating current & voltage into direct current & voltage. The C1, L2, C2, C3 & C10 are composted of the Pi filter for filtering the differential switching noise back to AC source.
AP3302A PWM Controller
The AP3302A PWM controller U1 and Opto-Coupler U2 and Q1 are the power converting core components. Connected to filtered output after bridge circuit, R13 & R16 resistor path will provide start-up voltage and current during starting up through Vcc (Pin 5). Subsequent VCC power will be provided by voltage feedback from middle-tapped auxiliary winding through two options, R12-D5 and R8-D2-Q3-D3, depending on desired output voltage. This design is to accommodate with the required wide voltage range to support various protocols (including QC 4/USB PD Programmable Power Supply PPS), from 3V to 12V.
Based on feedback of secondary side (Pin CATH of CY2312 Decoder) to primary side (FB pin of AP3302A) through Opto-coupler U2, AP3302A will switch ON and Off Q1 to regulate desired voltage and current on the secondary side.
APR345 Synchronous Rectification (SR) MOSFET Driver
APR345 operates in DCM mode in this design and drives the Q2 MOSFET based on the secondary side transformer on/off ‘s duty cycle. As the power loss with the APR345-controlled MOSFET Q2 is less than that with Schottky Diodes, the total efficiency can be improved.
CY2312 QC4/4+ Decoder & Protection on/off P MOSFET and Interface to Power Devices
The few sets of important pins provide critical protocol decoding and regulation functions in CY2312:
CC1 & CC2 (Pin 7, 8): CC1 & CC2 (Configuration Channel 1 & 2) are defined by USB PD spec to provide the channel communication link between power source and sink devices.
D+ & D- (Pin 5, 6): While defined under USB PD for data transfer only, D+ and D- are used in QC4+ to provide voltage information and backward compatibility with QC2.0 and QC3.0 devices.
Constant Voltage (CV): The CV is implemented by sensing VIN_PS (pin 13) via resistor divider and comparing with internal reference voltage to generate a CV compensation signal on the VFB_OUT pin (pin 16). The output voltages can be adjusted by firmware programming.
Constant Current (CC): The CC is implemented by sensing by current sense resistor (R19, 10mΩ) and current sense amplifier, then comparing with internal programmable reference voltage to generate a compensation signal on VFB_OUT pin (pin 16)
Loop Compensation: C15, R20 & C19 form the voltage loop compensation circuit, and C16, R21 & C20 form the current loop compensation circuit.
VFB_OUT (Pin 16): It is the key interface link from secondary decoder (CY2312) to primary regulation circuit (AP3302A). It is connected to Opto-coupler U2A cath for feedback information based all sensed CC1 & CC2, D+ & D- voltage status for getting desired Vbus voltage & current.
PWR_ENB Driver (Pin 12) to PMOSFET Gate: The pin is used to turn on/off Vbus load switch (Q4 & Q5) to enable/disable voltage output to the Vbus. An extra PMOSFET (Q5) is required to prevent reverse current from the attached battery source.

Chapter 4. The Evaluation Board (EVB) Connections

EVB PCB Layout
The thickness for both sides of PCB board trace cooper is 2 Oz.

Quick Start Guide Before Connection

Before starting the QC4/4+ 27W EVB test, the end user needs to prepare the following tool, software and manuals. For details, please contact Canyon Semiconductor local agent for further information.
- Test Kit: USBCEE Power Adapter Tester.
- Software: USBCEE_Adavanced_Tester_Version 1.0.1 (file name: USBCEETester)
- Firmware: CY2312PD20180119
- To buy a USB-C POWER ADAPTER PROGRAMMER AND TESTER (white color) –https://www.usbcee.com/
Prepare a certified three-foot Type-C cable and a Standard-A to Micro-B Cable.
Connect the input AC L&N wires to AC power supply output “L and N “wires.
Ensure that the AC source is switched OFF or disconnected before the connection steps.
Use a type-C cable for the connection between EV3’s board to Type-C receptacles of Tester (“USBCEE PAT Tester”).
Use 2 banana jack cables, one port of the cables are connected to E-load +&- terminals while the other port of the cables are connected to 27W QC4 unit’s VBUS & GND holes.
A Standard-A to Micro-B cable to be connected to the Micro-B receptacle of tester (“USBCEE PAT Tester”) & PC Standard-A receptacle respectively.

System Setup

Connection with E-Load
USBCEE Power Adapter Tester (PAT)
Input & Output Wires Connection

Chapter 5. Testing the Evaluation Board

Input & Output Characteristics

Input Standby Power
Load Condition: No Load +5VDC

Load Condition: No Load +5VDC

Vin(Vac)| Fin(Hz)| Vin(V)| Iin(mA)| PF| Pin(mW)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| EFF
90| 47| 90.12| 2.486| 0.146| 32.646| 5.043| 0| 0| —| —
115| 60| 115.12| 3.101| 0.126| 44.844| 5.043| 0| 0| —| —
230| 50| 230.36| 2.722| 0.090| 56.616| 5.042| 0| 0| —| —
264| 63| 264.28| 2.879| 0.088| 66.726| 5.042| 0| 0| —| —

Input Power Efficiency at Different AC Line Input Voltage

Load Condition: 2.25A @ 12VDC

Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| EFF
90| 47| 90.06| 0.587| 0.582| 30.761| 12.07| 2.25| 27.15| 3.61| 88.27%
115| 60| 115.07| 0.523| 0.506| 30.444| 12.07| 2.25| 27.17| 3.28| 89.23%
230| 50| 230.34| 0.346| 0.380| 30.312| 12.07| 2.25| 27.16| 3.15| 89.62%
264| 63| 264.32| 0.317| 0.363| 30.411| 12.08| 2.25| 27.17| 3.24| 89.35%
Load Condition: 3A @ 9VDC
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| EFF
90| 47| 90.05| 0.600| 0.578| 31.262| 9.10| 3.00| 27.29| 3.98| 87.28%
115| 60| 115.06| 0.531| 0.506| 30.901| 9.10| 3.00| 27.29| 3.62| 88.30%
230| 50| 230.34| 0.351| 0.381| 30.788| 9.09| 3.00| 27.28| 3.51| 88.61%
264| 63| 264.32| 0.322| 0.363| 30.896| 9.09| 3.00| 27.28| 3.62| 88.30%
Load Condition: 3A @ 5VDC
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| EFF
90| 47| 90.1| 0.373| 0.533| 17.902| 5.12| 3.00| 15.35| 2.56| 85.73%
115| 60| 115.1| 0.343| 0.452| 17.800| 5.12| 3.00| 15.35| 2.45| 86.22%
230| 50| 230.36| 0.219| 0.355| 17.894| 5.12| 3.00| 15.35| 2.55| 85.76%
264| 63| 264.34| 0.192| 0.355| 17.984| 5.12| 3.00| 15.35| 2.64| 85.33%
Load Condition: 3A @ 3.3VDC
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| EFF
90| 47| 90.11| 0.270| 0.495| 12.050| 3.30| 3.00| 9.90| 2.15| 82.13%
115| 60| 115.11| 0.252| 0.414| 12.016| 3.30| 3.00| 9.90| 2.12| 82.37%
230| 50| 230.37| 0.152| 0.346| 12.167| 3.30| 3.00| 9.90| 2.27| 81.33%
264| 63| 264.32| 0.134| 0.346| 12.253| 3.30| 3.00| 9.90| 2.36| 80.76%

Average Efficiency at Different Loading

Average Efficiency (12VDC)

Efficiency

115

| ****

60

| 115.08| 0.520| 0.507| 30.356| 12.02| 2.25| 27.04| 3.31| 89.1%| ****

89.1%

115.10| 0.412| 0.479| 22.723| 12.00| 1.69| 20.25| 2.48| 89.1%
115.11| 0.301| 0.433| 14.968| 11.98| 1.13| 13.47| 1.49| 90.0%
115.12| 0.169| 0.391| 7.629| 11.95| 0.56| 6.72| 0.90| 88.1%

230

| ****

50

| 230.30| 0.344| 0.382| 30.220| 12.02| 2.25| 27.05| 3.17| 89.5%| ****

89.0%

230.32| 0.273| 0.361| 22.695| 12.00| 1.69| 20.25| 2.45| 89.2%
230.32| 0.186| 0.351| 15.011| 11.98| 1.13| 13.47| 1.54| 89.8%
230.33| 0.101| 0.330| 7.685| 11.96| 0.56| 6.73| 0.96| 87.5%
Average Efficiency (9VDC)
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| Efficiency| Average

Efficiency

115

| ****

60

| 115.09| 0.552| 0.512| 32.539| 9.72| 3.00| 29.16| 3.38| 89.6%| ****

89.4%

115.10| 0.432| 0.483| 24.005| 9.57| 2.25| 21.53| 2.47| 89.7%
115.12| 0.318| 0.432| 15.782| 9.42| 1.50| 14.13| 1.65| 89.6%
115.13| 0.174| 0.392| 7.861| 9.28| 0.75| 6.96| 0.90| 88.5%

230

| ****

50

| 230.31| 0.361| 0.389| 32.372| 9.72| 3.00| 29.16| 3.22| 90.1%| ****

89.1%

230.32| 0.286| 0.364| 23.989| 9.57| 2.25| 21.54| 2.45| 89.8%
230.32| 0.195| 0.353| 15.845| 9.42| 1.50| 14.13| 1.71| 89.2%
230.34| 0.104| 0.331| 7.952| 9.28| 0.75| 6.96| 0.99| 87.5%
Average Efficiency (5VDC)
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| Efficiency| Average

Efficiency

115

| ****

60

| 115.11| 0.361| 0.46| 19.225| 5.55| 3.00| 16.65| 2.57| 86.6%| ****

86.5%

115.12| 0.286| 0.43| 14.055| 5.41| 2.25| 12.17| 1.89| 86.6%
115.13| 0.199| 0.40| 9.141| 5.27| 1.50| 7.90| 1.24| 86.4%
115.14| 0.103| 0.38| 4.498| 5.18| 0.75| 3.89| 0.61| 86.4%

230

| ****

50

| 230.33| 0.230| 0.36| 19.115| 5.64| 3.00| 16.92| 2.19| 88.5%| ****

87.5%

230.33| 0.173| 0.35| 14.050| 5.51| 2.25| 12.39| 1.66| 88.2%
230.34| 0.118| 0.34| 9.203| 5.37| 1.50| 8.06| 1.14| 87.6%
230.34| 0.063| 0.32| 4.579| 5.24| 0.75| 3.93| 0.65| 85.9%
Average Efficiency (3VDC)
Vin(Vac)| Fin(Hz)| Vin(V)| Iin(A)| PF| Pin(W)| Vout(V)| Iout(A)| Pout(W)| Pd(W)| Efficiency| Average

Efficiency

115

| ****

60

| 115.10| 0.237| 0.42| 11.538| 3.13| 3.00| 9.39| 2.15| 81.4%| ****

82.6%

115.11| 0.184| 0.40| 8.526| 3.12| 2.25| 7.02| 1.51| 82.3%

115.12

| 0.126| 0.39| 5.605| 3.10| 1.50| 4.66| 0.95| 83.1%

115.12

| 0.067| ****

0.36

| 2.774| ****

3.09

| 0.75| 2.32| 0.46| 83.6%

230

| ****

50

| ****

230.29

| 0.146| ****

0.35

| 11.648| ****

3.13

| 3.00| 9.39| 2.26| 80.6%| ****

81.1%

230.33

| 0.112| ****

0.34

| 8.648| ****

3.12

| ****

2.25

| 7.02| 1.63| 81.1%

230.33

| 0.076| ****

0.33

| 5.710| ****

3.10

| ****

1.50

| 4.66| 1.05| 81.5%

230.33

| 0.042| ****

0.30

| 2.856| ****

3.09

| ****

0.75

| 2.32| 0.54| 81.1%

Output CV & CC Mode Testing

PPS Mode I-V Curve
Fixed Mode I-V Curve

QC Series Compatible Mode Testing

QC 2.0 Mode Testing
QC 3.0 Continuous Mode 200mV/Step Testing
QC4/4+ CV Accuracy 20mV/Step Testing (PPS Support)
QC4/4+ CC Accuracy 50mA/Step Testing (PPS Support)

Key Performance Waveforms

AC Input Requirements
AC Brownout on/off

| | Input AC Reading
---|---|---
Turn_Off| Max Load| 73.54Vac
Min Load| 72.38Vac
Turn_On| Max Load| 80.43Vac
Min Load| 81.48Vac

AC Line Slow Transients (Sag/Surge)
27W QC4/4+ System Start-up Time & Hold-up Time
Q1 /Q2 Main Switching Voltage MOSFET Stress on at 12V/ 2.25A Loading
System Output Ripple & Noise with @ 1.2m Cable End
Output Voltage Transition Time
Thermal Testing
Test Condition: Vin=90V Vo=9V Io=3A Open Frame

| Temperature
---|---
Ambient Temp.| 24.7℃
Bridge| 82.6℃
Q3| 80.5℃

EMI (CE) Testing

IMPORTANT NOTICE

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LIFE SUPPORT
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Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user.
A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
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2/1/2018 www.diodes.com