DSPIC30F2020-30I/MM Microchip Technology, DSPIC30F2020-30I/MM Datasheet - Page 139

• Manufacturer Part Number: DSPIC30F2020-30I/MM
• Description: IC DSPIC MCU/DSP 12K 28QFN
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F2020-30I/MM

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 30 MIPs
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 12KB (4K x 24)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-QFN
• Core Frequency: 15MHz
• Core Supply Voltage: 3.3V
• Embedded Interface Type: I2C, SPI, UART
• No. Of I/o's: 21
• Flash Memory Size: 12KB
• Supply Voltage Range: 3V To 3.6V
• Package: 28QFN-S EP
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 30 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 21
• Interface Type: I2C/SPI/UART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM300023 - KIT DEMO DSPICDEM SMPS BUCKAC164322 - MODULE SOCKET MPLAB PM3 28/44QFNDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

12.34 APPLICATION EXAMPLES:
12.34.1 STANDARD PWM MODE
In standard PWM mode, the PWM output is typically
connected to a single transistor, which charges an
inductor, as shown in Figure 12-22. Buck and Boost
converters typically use standard PWM mode.
FIGURE 12-22:
© 2006 Microchip Technology Inc.
PWM1H
+V
+V
IN
PWM1H
IN
PWM1H
T
Inductor charges during T
ON
L1
versus Period controls power flow
T
ON
APPLICATIONS OF
STANDARD PWM MODE
Boost Converter
Buck Converter
Period
L1
T
OFF
ON
V
+
OUT
+
V
OUT
Preliminary
12.34.2 APPLICATION OF COMPLEMENTARY
Complementary mode PWM is often used in circuits
that use two transistors in a bridge configuration where
transformers are not used, as shown in Figure 12-23.
If transformers are used, then some means must be
provided to ensure that no net DC currents flow
through the transformer to prevent core saturation.
FIGURE 12-23:
PWM1H
PWM1L
+V
dsPIC30F1010/202X
IN
PWM1L
PWM1H
+V
PWM1H
IN
PWM MODE
Dead Time
Synchronous Buck Converter
Series Resonant Half Bridge Converter
PWM1L
C
R
APPLICATIONS OF
COMPLEMENTARY PWM
MODE
Period
L
Dead Time
R
T1
DS70178C-page 137
L1
Dead Time
V
OUT
+
V
+
OUT