High Efficiency Portable Media Player (PMP) Docking Station HIGHEFFPMPDOCK-REF (ACTIVE)

Description & Features

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Key Document

Description

The High Efficiency Portable Media Player (PMP) Docking Station reference design showcases Texas Instruments' PowerWise® power converters, battery charging circuitry, audio drivers and display interface. The reference design saves more power by initiating a power-saving mode when the PMP is unplugged from the wall power, automatically reducing the maximum brightness of the display as well as the output power of the audio drivers. See Figure 1 which shows the power management and audio segments of the reference design.

The LM3658SD-A dual source, USB/AC Li chemistry charger IC receives a wall wart or USB input and converts either input into a source voltage, using the LM20124 synchronous buck regulator, powers the docking station as well as providing the charging current to an external Lithium-Ion back-up battery pack.

The LM20124 provides the source voltage which biases both the audio and DS90UR241/124 serializer/deserializer (SERDES) segments of the video transport sections of the system. The LM4674 stereo Class D audio amplifier drives two 2W speakers. The LM2735Y Boost and SEPIC DC-DC Regulator boosts the 3.3VDC output to 5VDC, which supplies the bias voltage needed to charge the PMP device when docked in the docking station connector. Additionally, the wall wart also feeds an LM3478 Low-Side N-Channel Controller which boosts the voltage to 12VDC and provides power to the AVP-1280 video interface controller. The AVP-1280 converts the analog video output signal from the docking station into digital inputs for processing by the DS90UR241 serializer segment. Finally, the output of the DS90UR124 deserializer is taken and displayed by the Sharp LQ104S1DG21 TFT-LCD display, which is illuminated by an LED backlight with dimming capability.

Features
Inputs Output #1 Output #2 Output #3
  VinMin=4.5V     Vout1=3.3V     Vout2=5V     Vout3=12V  
  VinMax=6V     Iout1=0.9A     Iout2=1.5A     Iout3=0.1A  
  • 20W Wake-On-Load AC/DC Adapter provide source voltage to entire system.
  • Wall wart adapter or USB charging capability to Lithium-Ion battery backup.
  • Provides charging current for PMP device when docked in docking station connector.
  • Detachable LCD Display can be removed at least 10 meters from base.
  • Stereo Class D Audio Amplifier with logic selectable gain.
  • Low profile, high efficiency power management design.
  • Efficient LED Backlight Solution provides lighting to LCD Display.

 



  




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Part Number Status

HIGHEFFPMPDOCK-REF:
High Efficiency Portable Media Player (PMP) Docking Station

ACTIVE

TI Devices (6)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
DS90UR124  5-43MHz DC-Balanced 24-Bit FPD-Link II Deserializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
DS90UR124-Q1  5-43MHz DC-Balanced 24-Bit FPD-Link II Deserializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
DS90UR241  5-43MHz DC-Balanced 24-Bit FPD-Link II Serializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
DS90UR241-Q1  5-43MHz DC-Balanced 24-Bit FPD-Link II Serializer  FPD-Link SerDes  Sample & Buy View Design Kits & Evaluation Modules
LM20124  2.95-5.5V, 4A, Current Mode Synchronous Buck Regulator with Optional Automotive Grade  Step-down (buck)  Sample & Buy Not Available
LM3658  Dual Source USB/AC Li Chemistry Charger IC for Portable Applications  Battery management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
DS90UR124 Download Download
DS90UR124-Q1 Download
DS90UR241 Download Download
DS90UR241-Q1 Download
LM20124 Download Download
LM3658 Download

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Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.


Technical Documents
User guides (1)
Title Type Size (KB) Date
PDF 5469 27 Jan 2012

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