Microchip Technology DM330017 Data Sheet
Digital Power Starter Kit User’s Guide
DS52078A-page 16
2012 Microchip Technology Inc.
1.3
STARTER KIT FUNCTIONALITY AND FEATURES
The Digital Power Starter Kit is a power supply board that consists of one independent
DC/DC synchronous Buck converter and one independent DC/DC Boost converter.
DC/DC synchronous Buck converter and one independent DC/DC Boost converter.
The Digital Power Starter Kit provides closed-loop Proportional-Integral-Derivative
(PID) control in the software to maintain the desired output voltage level. The dsPIC
(PID) control in the software to maintain the desired output voltage level. The dsPIC
®
DSC device provides the necessary memory and peripherals for A/D conversion, PWM
generation, analog comparison and general purpose I/O, preventing the need to
perform these functions in external circuitry.
generation, analog comparison and general purpose I/O, preventing the need to
perform these functions in external circuitry.
SMPS dsPIC DSC devices are specifically designed to provide low-cost and efficient
control for a wide range of power supply topologies. The specialized peripherals facilitate
closed-loop feedback control of switch mode power supplies, providing communication
for remote monitoring and supervisory control.
control for a wide range of power supply topologies. The specialized peripherals facilitate
closed-loop feedback control of switch mode power supplies, providing communication
for remote monitoring and supervisory control.
The dsPIC33F SMPS family of devices provide the following features:
• Integrated program and data memory on a single chip
• Ultra-fast interrupt response time with interrupt priority logic
• Up to 2 Msps, on-chip ADC with Successive Approximation Register (SAR), and
• Ultra-fast interrupt response time with interrupt priority logic
• Up to 2 Msps, on-chip ADC with Successive Approximation Register (SAR), and
three Sample-and-Hold (S&H) circuits.
• Three independent, high-resolution PWM generators, specially designed to support
different power topologies
• Two high-speed analog comparators for control loop implementation and system
protection
• On-chip system communications (I
2
C™/SPI/UART)
• On-chip fast RC oscillator for lower system cost
• High-current sink/source for PWM pins (16 mA/16 mA)
• CPU performance (40 MIPS)
• Extensive power-saving features
• High-current sink/source for PWM pins (16 mA/16 mA)
• CPU performance (40 MIPS)
• Extensive power-saving features
FIGURE 1-1:
DIGITAL POWER STARTER KIT SYSTEM DIAGRAM
V
DD
V
IN
5k
5k
Resistive
Load
VFB Buck
V
IN
PWM1L
PWM1H
PWM2H
Current Sense
Buck
VFB Buck
SW1
Resistive
Load
VFB Boost
PWM2L
V
IN
PWM4H
AN0
AN1
AN2
AN3
AN4
AN6
Current Sense
Boost
Vin_FB
RB8
AN5
Temperature
Sensor
AN7
On-Board
Debugger
Debugger
Voltage/Current/
Temperature/Fault
LCD
USB
PC
dsPIC33
F
J
09G
S
3
02
VFB Boost