12v to 24v booster circuit diagram Daquan (two 12v to 24v booster circuit schematics explain)

12v to 24v booster circuit diagram (a)

The MC34063 boosts the circuit simulation from 12V to 24V.

aim of design:

Because we do not want to increase the 24V output for a few 24V vacuum pumps on the purchased switching power supply, the purchase cost increases a lot. Circuit Design Simulation:

Circuit simulation effect of mc34063 boosted from 12v to 24v:

Design experience summary:

(1) The following circuit can boost mc34063 from 12v to 24v, but if the load current rises to 1.2A, the voltage drops by about 2v.

(2) To be efficient, the switch tube should be a 1n5819 or 1n5822 high-speed switch tube

(3) npn should choose high frequency tube

(4) r6 can not be less than 0.2 ohms minimum, and can not be omitted, for on-chip current detection

(5) When the requirement is high, it is better to add a filter capacitor on the 6th pin of the chip.

(6) Output voltage = 1.25*(r10/r9+1)

(7) The switching frequency of the chip is up to 100khz, which is adjusted by the capacitance of the 3rd pin of the chip. The typical value is 1500pf.

(8) Pay attention to the switching ground when wiring, the ground of the feedback signal and the output voltage should be separated, and the single point should be grounded.

(9) Inductor l2 = 100uh is a typical value, increase the Bovan that can reduce the output voltage.

12v to 24v booster circuit diagram (2)

Input voltage range: 10-16V

Output voltage: 24V

This product is a pulse width modulation (PWM) method, non-isolated switching power supply, boosting the input 12V to 24V output, with high conversion efficiency, stable performance and other characteristics, is widely used in the automotive industry, new energy , industry and other fields.

The main features

1, the nature of the module: non-isolated module

2, conversion efficiency: up to 90%.

3, load adjustment rate: Â± 2%

4, voltage regulation rate: Â± 1%

5, dynamic response speed: 5% 200uS

6, the working temperature: industrial grade (-20 Â°C to +85 Â°C) (if the ambient temperature exceeds 40 degrees, need to reduce power usage, or enhance heat dissipation)

7. The product adopts an imported high-power integrated switching regulator module as its core, which can transform the unstable 10-16V DC power supply into a stable 24V DC power output. It has automatic protection functions such as input over-voltage, output over-current, over-temperature, and output short circuit, etc., and resumes normal operation after the fault is eliminated. Particularly suitable for car audio, LCD TVs.

working principle

DC12V DC24V can be boosted by a series of circuits such as oscillation-boost-rectifier-filter-regulator.

12v to 24v booster circuit diagram Daquan (two 12v to 24v booster circuit schematics explain)

Circuit diagram

Using Power Converter Considerations

1. Wire strictly in accordance with the character. The positive and negative polarity of the input voltage must not be reversed. Otherwise, the power module may be damaged. The output voltage may be damaged by the positive and negative polarity.

2. To ensure that the module can output enough voltage and power, make sure the input power supply has enough voltage and power.

3. If the output reaches the maximum current value, pay attention to the heat dissipation of the power module. It is recommended that the derating be 80% more reliable. (It is better to leave a certain current margin for the module, so that the service life is longer and the maximum value should not be used as much as possible.)

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