Membuat Rangkaian Alat Buck Converter dan Boost Converter
Kali ini saya akan membahas mengenai bagaimana cara membuat rangkaian buck dan boost converter, sebelumnya apa buck converter itu ? yaitu sebuah rangkaian yang digunakan untuk menurunkan tegangan dengan efisiensi daya yang bagus dari pada mengunakan IC regulator misal IC regulator step down 7805 atau lm317, kemudian sebaliknya, boost converter adalah sebuah rangkaian yang digunakan untuk menaikkan tegangan dari tegangan sumber, misal dari tegangan 5 volt menjadi tegangan 12 volt atau 20 volt tergantung dari duty cycle yang dipakai, untuk lebih jelasnya berikut adalah penjelasan program dan skemanya.
Dioda MUR1560
Optocopler TLP250
a. Minimum System ATMega8
b. Rangkaian Buck Converter
c. Rangkaian Boost Converter
d. Dioda MUR1560
e. Program Bascom AVR
'====================
'PWM dengan Frequency 40 Khz
'====================
$regfile = "m8535.dat"
$crystal = 16000000
Config Lcdpin = Pin , Rs = Portc.7 , E = Portc.5 , Db4 = Portc.3
Config Lcdpin = Pin , Db5 = Portc.2 , Db6 = Portc.1 , Db7 = Portc.0
Config Lcd = 16 * 2
Config Adc = Free , Prescaler = 64 , Reference = Avcc
Config Timer1 = Pwm , Pwm = 8 , Compare B Pwm = Clear Up , Prescale = 1
Const Inisial = &HFFB0
Cls
Cursor Off
Dim Dataadc As Word
Dim Adcpotensio As Word
Dim Adcarusinput As Word
Dim Adcarusoutput As Word
Dim V1 As Single
Dim V2 As Single
Dim A1 As Single
Dim A2 As Single
Dim X As Integer
X = 2
Ddrc.2 = 1
Portc.2 = 0
On Timer1 Timer1_isr
Tcnt1l = Low(inisial)
Tcnt1h = High(inisial)
Enable Timer1
Enable Interrupts
Start Adc
Do
Loop
Timer1_isr:
Tcnt1l = Low(inisial)
Tcnt1h = High(inisial)
Dataadc = Getadc(x)
If X = 2 Then
Adcpotensio = Dataadc
End If
If X = 3 Then
Adcarusinput = Dataadc
End If
If X = 4 Then
Adcarusoutput = Dataadc
End If
V1 = Adcarusinput * 5
V1 = V1 / 1023
A1 = V1 - 2.5
A1 = A1 / 0.1
V2 = Adcarusoutput * 5
V2 = V2 / 1023
A2 = V2 - 2.5
A2 = A2 / 0.1
Upperline
Lcd "Du= " ; Adcpotensio
Lowerline
Lcd "Ai=" ; Fusing(a1 , "#.##") ; " " ; "Ao=" ; Fusing(a2 , "#.##")
'Lcd Adcarusinput ; " " ; Adcarusoutput
'output di PORTD.4 = OC1B
Pwm1b = Adcpotensio
Incr X
If X > 4 Then
X = 2
End If
Return
f. Program Code Vision AVR
/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.3 Standard
Automatic Program Generator
� Copyright 1998-2011 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project :
Version :
Date : 7/20/2016
Author : tyery08
Company : embeeminded.blogspot.com
Comments:
Chip type : ATmega8535
Program type : Application
AVR Core Clock frequency: 16.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 128
*****************************************************/
#include <mega16.h>
#include <stdlib.h>
#include <delay.h>
#include <math.h>
// Standard Input/Output functions
#include <stdio.h>
// Alphanumeric LCD functions
#include <alcd.h>
#define ADC_VREF_TYPE 0x40
// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | (ADC_VREF_TYPE & 0xff);
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=0x40;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
return ADCW;
}
// Declare your global variables here
// Declare your global variables here
unsigned char buffer[32];
unsigned int inADC17, inADC24, outADC, arusout;
unsigned int dutyc;
float ainx, aoutx, voutx, vin, ain, arusin, aout, vin1, dayain, dayain1, slope;
float dc17, dc24, ft17, ft24, ftOut, deltavin, deltadaya;
float dayain;
char temp[10];
char temp1[10];
char temp2[10];
char temp3[10];
char temp4[10];
void main(void)
{
// Declare your local variables here
unsigned char i;
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0x00;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTC=0x00;
DDRC=0xFF;
// Port D initialization
// Func7=In Func6=In Func5=Out Func4=Out Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=0 State4=0 State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x30;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: 16000.000 kHz
// Mode: Fast PWM top=ICR1
// OC1A output: Inverted
// OC1B output: Inverted
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0xA2;
TCCR1B=0x19;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x01;
ICR1L=0x90;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;
// USART initialization
// USART disabled
UCSRB=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// ADC initialization
// ADC Clock frequency: 125.000 kHz
// ADC Voltage Reference: AVCC pin
// ADC High Speed Mode: Off
// ADC Auto Trigger Source: Free Running
ADMUX=ADC_VREF_TYPE & 0xff;
ADCSRA=0xA7;
SFIOR&=0x0F;
// SPI initialization
// SPI disabled
SPCR=0x00;
// TWI initialization
// TWI disabled
TWCR=0x00;
// Alphanumeric LCD initialization
// Connections are specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTC Bit 7
// RD - PORTC Bit 6
// EN - PORTC Bit 5
// D4 - PORTC Bit 3
// D5 - PORTC Bit 2
// D6 - PORTC Bit 1
// D7 - PORTC Bit 0
// Characters/line: 16
lcd_init(16);
while (1)
{
// (optional) 400 adalah nilai maksimal pwm==100%
// OCR1A=in17;
OCR1B=inADC17;
// OCR1B=dutyc;
delay_ms(200);
OCR1A=0;
OCR1B=0;
delay_ms(1);
inADC17=read_adc(7);
vin = (inADC17 * 5.0)/1023.0;
ftoa(vin,1,temp);
lcd_gotoxy (0,0);
lcd_putsf("V= ");
lcd_puts(temp);
arusin=read_adc(4);
ain = (arusin * 5.0)/1023.0;
ainx = (ain - 2.5)/0.1;
ftoa(ainx,1,temp1);
lcd_gotoxy (0,1);
lcd_putsf("Ai=");
lcd_puts(temp1);
arusout=read_adc(6);
aout = (arusout * 5.0)/1023.0;
aoutx = (aout -2.5)/0.1;
// ftoa(aoutx,1,temp2);
// lcd_gotoxy (8,1);
// lcd_putsf("A0=");
// lcd_puts(temp2);
ftoa(dayain,1,temp3);
lcd_gotoxy (8,1);
lcd_putsf("P=");
lcd_puts(temp3);
ftoa(slope,1,temp4);
lcd_gotoxy (8,0);
lcd_putsf("S=");
lcd_puts(temp4);
dayain = ainx * vin;
deltadaya = dayain - dayain1;
if(deltadaya >0){
deltavin = vin - vin1;
if(deltavin > 0){
//dutyc = dutyc + 5;
}
if(deltavin < 0){
//dutyc = dutyc - 5;
}
}
if(deltadaya <0){
deltavin = vin - vin1;
if(deltavin < 0){
//dutyc = dutyc + 5;
}
if(deltavin > 0){
//dutyc = dutyc - 5;
}
}
//slope = (dayain - dayain1) / (vin - vin1);
// if (slope > 0) {
//dutyc = dutyc + 5;
// }
// if (slope < 0) {
//dutyc = dutyc - 5;
// }
dayain1 = dayain;
vin1 = vin;
}
}
g. Gambar Hasilnya
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No Wa/Telepon (fajar) : 085369237896
Email: Fajarudinsidik@gmail.com
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