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Description

This reference design implements a 10 amp, two-phase boost converter with an adjustable output voltage that can be dynamically set for voltages from 16V to 40V DC. The output voltage range allows tracking an audio signal when provided by either a PWM signal from a processor or a voltage.

Key Features

  • PWM or DC level control of output voltage
  • Allows adjustment of audio amplifier power supply to match signal conditions
  • Input Voltage Range: 9V to 16V
  • Output Voltage Range: 16V to 40V
  • 10 amp output

Description

Based on TI's Jacinto™ DRA71x processor, this automotive reference design focuses on system-level cost savings. The 6 layer design reduces PCB costs through an optimized via breakout scheme, integration of key features and an optimized power distribution network. Functionality can be added or (...)

Key Features

  • TI Jacinto DRA71x processor with integrated features help customers design cost effective, feature rich, entry level (display audio) infotainment and cluster systems
  • ARM Cortex-A15 based processor with 600MHz, 800MHz, and 1GHz speeds, as well as 3D/2D graphics, C66x DSP and Cortex M4 options
  • Processor (...)

Description

System level cost savings tactics are a focus of this board design. Key areas affecting fabrication costs are number of PCB layers and via drill size. The AM570x features a package with via channel arrays. These channels make it possible to build the PCB in only 6-layers while still achieving 100 (...)

Key Features

  • Sitara™ AM570x System on Chip (17 x 17 mm)
  • Reference design files for a 6-layer board
  • 100% signal breakout and routing for all signals
  • SerDes routing for DDR, HDMI, USB3, & CSI-2
  • Reference power design with TPS65916 PMIC

Description

The PMP7837 is a 4-phase synchronous boost converter that can take a 6-17V input and put out 24V at 450W. It is used for powering up to eight 50W automotive trunk amplifiers. The 4-phase synchronous design with 450kHz switching frequency per phase results in a compact and efficient circuit well (...)

Key Features

  • Mininum 6V input voltage supports US automotive cold cranking requirement
  • 96% peak efficiency at 12V input
  • 1.8MHz effective switching frequency
  • Ripple cancellation as a result of 4-phase design
  • Synchronous operation saves power and eases thermal design.

Design Parameters

 
 
Vin (V) (Min)
Vin (V) (Min)
Vin (V) (Max)
Vin (V) (Max)
Vout (V) (Nom)
Vout (V) (Nom)
Iout (A) (Max)
Iout (A) (Max)
Output Power (W)
Output Power (W)
Isolated/Non-Isolated
Isolated/Non-Isolated
Input Type
Input Type
Topology
Topology
Designed for
Designed for
PMP7837.1
(Output
Voltage1)
6 17 24 15 360 Non-Isolated DC Boost- Multiphase

Description

This reference design demonstrates a low-power wireless sensor which detects gas leaks by analyzing the ultrasonic spectrum for particular signatures. The system is designed to operate from a single Li-Primary coin cell and communicate wirelessly to a base station, which removes all requirements for (...)

Key Features

  • Accurate li-primary battery gauging enables extended lifetime and predictable maintenance
  • Uses multiple power domains to optimize system current consumption
  • System diagnostics available for precision power evaluation during development
  • Over three years of operation on coin cell battery ehen sensing (...)

Description

This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates (...)

Key Features

  • Single digital signal processor (DSP) SoC for audio preprocessing
  • Linear microphone board (LMB) with 4 microphones
  • Audio-preprocessing software
  • Hardware/software solution with modularized components to build an audio preprocessing solution for clear voice triggering and recognition

Description

The PMP11769 reference design is a complete solution for a 700W automotive external amp. The boost converter provides 36.0V @ 10.0A continuous / 20.0A peak from an input voltage of 9-16V. It contains two premium Class-D audio amplifiers, which provide 2x 175W @ 4-Ω load (left & right (...)

Key Features

  • Easily integrated into automotive systems with 50V load dump and integrated protection system
  • Ultra-HD audio for best quality sound for any integrated Class-D amplifier
  • 100kHz bandwidth, which enables support for high resolution audio files and formats
  • Low noise, which eliminates the "hiss" or "buzz (...)

Design Parameters

 
 
Vin (V) (Min)
Vin (V) (Min)
Vin (V) (Max)
Vin (V) (Max)
Vout (V) (Nom)
Vout (V) (Nom)
Iout (A) (Max)
Iout (A) (Max)
Output Power (W)
Output Power (W)
Isolated/Non-Isolated
Isolated/Non-Isolated
Input Type
Input Type
Topology
Topology
Designed for
Designed for
PMP11769.1
(Output Voltage 1)
6 16 36 10 360 Non-Isolated DC Boost
PMP11769.2
(Output Voltage 2)
35 37 12 .2 2.4 Non-Isolated DC Boost- Non Sync
PMP11769.3
(Output Voltage 3)
35 37 -12 .05 .6 Non-Isolated DC Buck Boost- Inverting
PMP11769.4
(Output Voltage 4)
10 15 3.3 .05 .165 Non-Isolated DC Linear Regulator

Description

This power module generates all voltages to supply a class-D audio amplifier. The main output voltage is 36V and delivers 200W continuously and 840W peak. The first stage is a power-factor corrected Boost. A Flyback converter supplies 12V on primary side as well as 12V@300mA and 3.3V@200mA on (...)

Key Features

  • Low cost PFC + 2-switch forward topology provides 200W average, 840W peak power
  • Constant switching frequency: particularly suitable for audio applications
  • Simple thermal inteface: two small heat-sinks placed on one side of the board
  • Good plug-to-plug efficiency: 84% @ 115Vac, 86% @ 230Vac
  • Compact (...)

Design Parameters

 
 
Vin (V) (Min)
Vin (V) (Min)
Vin (V) (Max)
Vin (V) (Max)
Vout (V) (Nom)
Vout (V) (Nom)
Iout (A) (Max)
Iout (A) (Max)
Output Power (W)
Output Power (W)
Isolated/Non-Isolated
Isolated/Non-Isolated
Input Type
Input Type
Topology
Topology
Designed for
Designed for
PMP10215.1
(Output Voltage 1)
85 264 400 .55 220 Non-Isolated AC Boost- CCM
PMP10215.2
(Output Voltage 2)
120 430 12 .3 3.6 Isolated DC Flyback- DCM
PMP10215.3
(Output Voltage 3)
10 14 3.3 .2 .66 Non-Isolated DC Buck- Synchronous
PMP10215.4
(Output Voltage 4)
350 430 36 15 540 Isolated DC Forward- 2 Switch

Description

This design turns the extremely high performance analog input TPA3251 Class-D amplifier into a digital input system with audio processing using the highly versatile PCM5242 differential output DAC. Now the full performance of TPA3251 amplifier can be realized with a variety of digital input sources (...)

Key Features

  • High performance and audio fidelity from the TPA3251 with digital sources
  • Accepts USB, Optical, SPDIF and I2S format digital inputs
  • 175W @ 10% THD + N from digital sources
  • Less than 0.004% THD + N 10W into 4ohms
  • miniDSP processing flexibility with PCM5242 DAC
  • Fully differential analog path for noise (...)

Description

This wireless subwoofer amplifier reference design demonstrates the ease of integrating wireless connectivity to a traditional analog input subwoofer design.The wired or wireless mode is controlled by an MSP430. The reference design includes a high performance stereo digital audio amplifier system (...)

Key Features

  • Easy integration of wireless connectivity to analog subwoofer design
  • High performance stereo digital input amplifier system
  • Volume, bass, mute control
  • Selectable bass frequency
  • Wireless Subwoofer system comprising Analog & Wireless Control board, Audio RF SoC module board digital input Class D audio (...)
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