Texas Instruments BoosterPack C5545, Hardware User'S Manual, Page: 11 / 43

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Overview
11 SPRUI90 – September 2016
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Copyright © 2016, Texas Instruments Incorporated
TMS320C5545 BoosterPack Hardware
1.4 Power Supply
The C5545 BoosterPack can be powered from a 5 V Micro USB AB - Standard USB cable
connected to the Host PC. This +5 V input is in turn converted into required supply voltages using
regulators.
The regulators used in the C5545 BoosterPack are shown in Table 1 .
Table 1. Voltage Regulators
Regulator Purpose
TPS62161DSGT (U21) 1V8 Generation
TPS62162DSGT (U20) 3V3 Generation
TPS76601D (U22) External 1V3 Generation for C5545
The DC-DC Buck Regulator IC TPS62161DSGT and TPS62162DSGT (U21 and U20, respectively) takes
care of the generation of various powers to the C5545 Processor listed below:
• Core Voltage
– CVDD
• Internal LDO Voltages
– DSP_LDO
– ANA_LDO
– USB_LDO
• I/O Voltages
– DVDDIO
• RTC Voltages
– CVDDRTC
TPS62161DSGT (U21) is enabled by default to generate 1.8 V when C5545 BoosterPack is powered ON.
After that, TPS62162DSGT (U20) gets enabled to generate 3.3 V.
2 Introduction to C5545 BoosterPack Board
This section provides an introduction and details of interfaces in C5545 BoosterPack board. It contains:
• XDS100 On-Board Emulator
• CLOCK Distribution
• Reset Circuit and Distribution
• SPI FLASH Interface
• LED and Switch Interface
• CC2650 BLE Interface
• OLED Display Interface
• Audio CODEC Interface
• USB Interface
• UART Interface
• Connection Between C5545 and LaunchPad
• I2C Interface