Microchip Technology AC164133 Data Sheet

Page of 64
Introduction
© 2008 Microchip Technology Inc.
DS70336A-page 11
1.2
FEATURES
The Buck/Boost Converter PICtail Plus Daughter Board provides the following 
features: 
1.2.1
Power Stages
• Two synchronous buck converter power stages
• One boost converter power stage 
• Voltage/current measurement for digital control of buck converters
• Voltage/current measurement for digital control of boost converter 
• Switchable, one 5
Ω/5W resistive load on Buck Converter 1 output (VOUT1)
• Buck Converter 1 output (VOUT1) on J4 connector for external loading 
• Buck Converter 2 output (VOUT2) on J5 connector for external loading
• Boost Converter output (VOUT3) on J8 connector for external loading
• Connector J9 for auxiliary power input 
1.2.2
Additional Features
• 5 k
Ω Potentiometer (RP1) connected via jumper J10
• Input voltage source selection via jumper J6
• Additional resistive load R46 via jumper J11
• Connectors J1 and J2 (Explorer 16/16-bit 28-pin Starter Development Board)
• PMBus™ Connector (J3)
1.2.3
Daughter Board Power
• Auxiliary power input (J9): +7V to +15V (+9V nominal)
• 9V power input is through input connectors J2 and J1
• LED power-on indicator (D14)
• LED output voltage indicators (D11, D12 and D13)
1.3
PRODUCT PACKAGE
The Buck/Boost Converter PICtail Plus Daughter Board kit consists of the following 
items: 
• Buck/Boost Converter PICtail Plus Daughter Board 
• Buck/Boost Converter PICtail Plus Daughter Board CD 
The CD consists of the application software, example code, Readme file and User’s 
Guide.
Note:
9V input is supplied from the controller card (16-bit 28-pin Starter 
Development Board or Explorer 16 Development Board). All 16-bit 28-pin 
Starter Development Boards should have a blue wire connecting Pin 1 of 
J1 to Pin 28 of J2. If no blue wire connects them, connect a wire between 
them to supply the 9V input to the Buck/Boost Converter PICtail Plus 
Daughter Board.