Difference between revisions of "Power Dock for NanoPi NEO"

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[[File:Power Dock for NanoPi NEO .png|thumb|Power Dock for NanoPi NEO]]
 
[[File:Power Dock for NanoPi NEO .png|thumb|Power Dock for NanoPi NEO]]
 
* The Power Dock for NanoPi NEO is a power conversion board.
 
* The Power Dock for NanoPi NEO is a power conversion board.
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* It uses TI's TPS54331 device with wide voltage range.  
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* It uses TI's TPS54331 device with wide voltage range.TPS54331 integrates a low RDS(on) high-side MOSFET.
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<!---with an integrated high-side n-channel
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MOSFET. To improve performance during line and load transients, the device implements a constant-frequency,
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current mode control which reduces output capacitance and simplifies external frequency compensation design.
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The TPS54331 device has a preset switching frequency of 570 kHz.
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, .电源转换芯片，输入电压范围宽，带载能力强，输出电流大。使用了低内阻、大电流屏蔽电感，提高转换效率，降低发热量。--->
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* Its slow-start feature limits inrush currents. Its overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions.
 
* Its slow-start feature limits inrush currents. Its overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions.
 
* Its side A has double-layer tall female connectors which allow a NEO to be stacked on the board. Its side B populates NEO's GPIO pins.
 
* Its side A has double-layer tall female connectors which allow a NEO to be stacked on the board. Its side B populates NEO's GPIO pins.
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* Switching Frequency: 570KHz
 
* Switching Frequency: 570KHz
 
* Shutdown Quiescent Current: 1uA  
 
* Shutdown Quiescent Current: 1uA  
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<!---* 输入欠压保护--->
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* Under Voltage Lockout
 
* Overvoltage Protection
 
* Overvoltage Protection
 
* Slow-Start
 
* Slow-Start
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<!---
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<!--- 小康建议去掉，这两项需要实际测量
 
* 负载调整率：±1%
 
* 负载调整率：±1%
 
* 电压调整率：±0.5%
 
* 电压调整率：±0.5%

Latest revision as of 09:44, 19 April 2017

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1 Introduction

Power Dock for NanoPi NEO
  • The Power Dock for NanoPi NEO is a power conversion board.
  • It uses TI's TPS54331 device with wide voltage range.TPS54331 integrates a low RDS(on) high-side MOSFET.
  • Its slow-start feature limits inrush currents. Its overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions.
  • Its side A has double-layer tall female connectors which allow a NEO to be stacked on the board. Its side B populates NEO's GPIO pins.

2 Hardware Spec

  • Input Voltage: 12V
  • Output: 5V/2A
  • Switching Frequency: 570KHz
  • Shutdown Quiescent Current: 1uA
  • Under Voltage Lockout
  • Overvoltage Protection
  • Slow-Start
  • PCB dimension(mm): 40 x 88

Power Dock for NanoPi NEO_PCB

  • Pin Description:
  • GPIO Pin Description
Pin# Name Linux gpio Pin# Name Linux gpio
1 SYS_3.3V 2 VDD_5V
3 I2C0_SDA 4 VDD_5V
5 I2C0_SCL 6 GND
7 GPIOG11 203 8 UART1_TX/GPIOG6 198
9 GND 10 UART1_RX/GPIOG7 199
11 UART2_TX/GPIOA0 0 12 PWM1/GPIOA6 6
13 UART2_RTS/GPIOA2 2 14 GND
15 UART2_CTS/GPIOA3 3 16 UART1_RTS/GPIOG8 200
17 SYS_3.3V 18 UART1_CTS/GPIOG9 201
19 SPI0_MOSI/GPIOC0 64 20 GND
21 SPI0_MISO/GPIOC1 65 22 UART2_RX/GPIOA1 1
23 SPI0_CLK/GPIOC2 93 24 SPI0_CS/GPIOC3 67
  • USB/Audio/IR Pin Description
NanoPi-NEO V1.1
Pin# Name Description
1 VDD_5V 5V Power Out
2 USB-DP1 USB1 DP Signal
3 USB-DM1 USB1 DM Signal
4 USB-DP2 USB2 DP Signal
5 USB-DM2 USB2 DM Signal
6 GPIOL11/IR-RX GPIOL11 or IR Receive
7 SPDIF-OUT/GPIOA17 GPIOA17 or SPDIF-OUT
8 PCM0_SYNC/I2S0_LRC I2S/PCM Sample Rate Clock/Sync
9 PCM0_CLK/I2S0_BCK I2S/PCM Sample Rate Clock
10 PCM0_DOUT/I2S0_SDOUT I2S/PCM Serial Bata Output
11 PCM0_DIN/I2S0_SDIN I2S/PCM Serial Data Input
12 GND 0V

3 Device Operation

  • The Power Dock for NanoPi NEO uses TI's TPS54331 device. The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET.

4 Hardware Setup

4.1 Connect Power Dock to NanoPi NEO

A NanoPi NEO can be stacked on the board at side A's female connector. Its side B populates NEO's GPIO pins.

Hardware Setup
Power Dock for NanoPi NEO_nanopi_NEO
Connect Power Dock to NanoPi BAT & Other Modules:
Power Dock for NanoPi BAT Power Dock for NanoPi NEO Hub Power Dock for NanoPi RTC Power Dock for NanoPi GPS

5 Resources

6 Update Log

6.1 April-19-2017

  • Released English version
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