Automotive 12V to USB 5V 2A output power adapter: design and development simulations

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STD Automotive 12V to USB 5V 2A output power adapter: design and development simulations

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Update time： 2019-12-19 09:29:31

Creation time： 2015-09-22 07:51:42

Description

Simulations created in development support of: https://easyeda.com/example/Automotive_12V_to_USB_5V_2A_output_power_adapter_-L1xrlfxrJ Contains: 1. Design and simulation of a stable input filter for the 12V to 5V SMPS. 2, Several outline schemes for the output overvoltage protection shunt clamp. The actual project as shown in the above link has been successfully built and tested.

Design Drawing

schematic diagram

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Notes
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Input filter stability with constant power load
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Output protection: DC Sweep
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Output protection: transient analysis with SMPS Switch failure
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Output protection 2: DC Sweep
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PCB

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BOM

BOM download Purchase Parts

ID	Designator	Quantity
1	B2	1
2	VAMMETER2,VAMMETER1	2
3	LFILT2	1
4	CIN2,CFILT1,CFILT2,CIN1	4
5	RLESR2,RLESR1	2
6	RCESR4,RCESR1,RCESR3,RCESR2	4
7	RDAMP2	1
8	CDAMP2	1
9	B1	1
10	V1	1
11	LFILT1	1
12	RDAMP1	1
13	CDAMP1	1
14	V1	1
15	U1,U2	2
16	Q1	1
17	R1,R5	2
18	Q2	1
19	R2	1
20	R3,R7	2
21	R4,R8	2
22	RSER1,RSER2	2
23	Q3	1
24	A1,A2	2
25	M1	1