5~12V Boost circuit

2 years ago 2024
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1、working principle: Due to the built-in power switch with a large current, 34063 can control the switch current to 1.5A. The internal circuit includes a reference voltage source oscillator, a converter, a logic control circuit, and a switching transistor. Reference voltage source is a bandgap reference with temperature compensation. The oscillation frequency of the oscillator is determined by the external timing capacitor of the 3 pin. The switching transistor is composed of a reverse input terminal of the comparator and a logic control circuit connected with the oscillator, and is provided with a ON, and is composed of a next pulse which is synchronized with the output of the oscillator to be OFF. 2、Function Description: This module is mainly to achieve DC 5V boost to DC 12V; 3、Description of each function module:

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4、Element and PCB plate before welding ;

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5、Physical map after welding ;

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ID Value Qty. Package Components Supplier SeeedStudio Manufacturer Part
1 OUT 2 H2-5.0-10.5X8.0MM X2,X1 SeeedStudio 320110006 GS009S-2P-2
2 150uH 1 Z-150uH L1
3 MC33063_MC34063P 1 DIP8 U1
4 1 1 PR-D2.3XL6.5MM R1 SeeedStudio 301020004 FHCFR-1/4W-000J
5 200 1 PR-D2.3XL6.5MM R2 SeeedStudio 301020004 FHCFR-1/4W-000J
6 104 2 CERAMIC-2.54 C1,C3 SeeedStudio 302010208 CC1-F5SL2A101KSPW
7 47uF 1 PC-D5.0MM C4 SeeedStudio 302030033 100
8 101 1 CERAMIC-2.54 C2 SeeedStudio 302010208 CC1-F5SL2A101KSPW
9 10K 1 PR-D2.3XL6.5MM R3 SeeedStudio 301020004 FHCFR-1/4W-000J
10 1.2K 1 PR-D2.3XL6.5MM R4 SeeedStudio 301020004 FHCFR-1/4W-000J
11 1N5819 1 DO-35 D1



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