Editor Version ×
Standard

1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

Profession

1.Brand new interactions and interfaces

2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

4.For enterprises, more professional users

Std EditionCar DC-DC step down Converter

Profile:This is an automotive power supply, that takes the vehicle 12V as input, and is able to generate a total of 200W of 5V power (40A) It is based on two modules i6A4W020A033V-001-R from TDK Lambda. It is useful to power a large amount of 5V LED Strips as they are quite power hungry

License: CC-BY 3.0

Published Time:2021-06-03 00:16:04
  • 802
  • 0
  • 0
Description

The project only uses through-holes standard components. 


You can just have the PCB Done, and then assemble the modules, Fuse holders, capacitors, and screw terminals.

WARNING : the PCB needs to have 2 OZ /ft² of copper planes to ensure right thermals and dimensionning of the traces.


INPUT : 9-16 V DC - 20 A

OUTPUT : 5V DC - 40 A

 

All outputs are fuse-protected

Input is also fuse protected (however if you connect this to the battery of your car, you need to have a fuse close to the battery to protect the wire going to the PCB)

 

The Input wires can be directly soldered on the board (using at least 6mm² wires), and a connector like XT60 can be used if disconnection is necessary.

 

There is a ZERO ohm resistor that can be either populated or not populated.
If not populated, the two Modules each supply half of the outputs. Otherwise, output power is commonalized.

 

OUT1_x are outputs using module 1

OUT2_y are outputs using module 2 

 

Each modules has 6 outputs: 4 outputs rated at each 5 Amps (1.5² mm wire recommanded) and 2 outputs rated each at 2.5 A.

 

Each module can be independantly activated or disactivated using the DCDCn_Switch header (for instance by using a bistable switch)

 

The TDK Lambda module used is a good quality one, can be found for around 30€ on Mouser or Digikey.

 

Thermal behavior has not been tested, but at full output power, self heating should be around 10W, so forced air might be required to avoid modules self-protection.

 

Use this module at your own risk, there is no warranty that this design is safe for your application.

 

Don't hesitate to message me if you want more details on this design.

Documents
ID Name Designator Footprint Quantity
1 64600001003 FUSE_5A,FUSE_16A,FUSE_10A,FUSE_10A_2,FUSE_10A_3,FUSE_10A_4,FUSE_5A_2 64600001003 7
2 100nF C5,C6 CAP-TH_L4.5-W3.0-P5.00-D1.2 2
3 0 U3 R1210 1
4 100uF C4,C3,C2,C1 CAP-TH_BD5.0-P2.00-D0.8-FD 4
5 8.2K R4,R3 RES-TH_BD2.5-L6.5-P10.50-D0.6 2
6 390 R1,R2 RES-TH_BD2.5-L6.5-P10.50-D0.6 2
7 POWER_12V_30A_connection 12V_INPUT 6MM² POWER CONNECTOR 1
8 DCDC U2,U1 16TH BRICK MODULE FOOTPRINT 2
9 WJ127-5.0-2P OUT2_4,OUT2_2,OUT1_5,OUT2_5,OUT2_3,OUT1_6,OUT2_6,OUT2_1,OUT1_4,OUT1_2,OUT1_1,DCDC2_SWITCH,DCDC1_SWITCH,OUT1_3 CONN-TH_2P-P5.00_CPC3703CTR 14

Unfold

Project Attachments

服务时间

周一至周五 9:00~18:00
  • 0755 - 2382 4495
  • 153 6159 2675

服务时间

周一至周五 9:00~18:00
  • 立创EDA微信号

    easyeda

  • QQ交流群

    664186054

  • 立创EDA公众号

    lceda-cn