UG297: EFM8BB3 USB Type-C 60 W Charger Reference Design
SLRDK1001A is a reference design for a small and cost effective USB Type-C 60 W charger. A Silicon Labs EFM8BB3 Busy Bee microcontroller is used for USB Type-C Power Delivery (PD) negotiation.The USB Type-C 60 W Charger Reference Design ships with a ready to use demo firmware that is capable of delivering up to 60 W output power.An on-board SEGGER J-Link debugger enables easy customization and development.
The SLRDK1001A USB Type-C 60 W Charger reference design showcases the EFM8BB3 Busy Bee as a USB Type-C Power Delivery (PD) controller, where it handles power contract negotiaton while interfacing an I2C controlled voltage regulator.The voltage regulator is based on a buck boost controller IC with 4 external switching transistors, offering a conversion efficiency up to 95%. The boost converter can source up to 60 W output power (3.0 A at 20 V) for powering or charging a USB Type-C device such as a laptop, mobile phone, tablet etc.The board is powered by an external 12 V input. For maximum output power, the external source has to be capable of delivering more than 65 W at 12 V. A DC jack connector allows for easy connection of commonly available off-the-shelf power adapters, while solder connectors offer a flexible option for connecting an input source.To simplify application development, the board includes an on-board SEGGER J-Link debugger running on an EFM32 Giant Gecko MCU. The debugger also features a USB virtual COM port. The entire debugger design is located on the bottom side of the board so it is easy to distinguish from the actual reference design.
The board features are:
• EFM8BB3 Busy Bee USB PD controller
• 60 W buck boost converter
• 5.5 mm DC jack with 2.5 mm center pin for connecting a power adapter
• On-board J-Link debugger with a USB virtual COM port
• Area-effective design
• Breakout for all I/Os
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SLRDK1001A 、 EFM8BB3 、 BRD5204A 、 NCP81239 |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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March 2017 |
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Rev. 1.1 |
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UG297 |
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4.2 MB |
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