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reference designLM5171 | Demoboard PMP41079

Texas Instruments LM5171 | Demoboard PMP41079

Dual-phase staggered boost converter reference design for Class H audio amplifiers

Overview

TopologyBoost Converter
Input voltage9-16 V
Output 142 V / 10 A
IC revision1

Description

This reference design showcases a 450W dual-phase staggered boost converter reference design for Class H audio amplifier applications. To power an external audio amplifier, the controller is able to track the Class H control signal from the amplifier and generate an output voltage that tracks the amplitude of the speaker. As a result, minimal overall power consumption and loss can be achieved.

Features

  • Functional Safety-Capable
  • 85V HV-port and 80V LV-port max ratings
  • 1% Typical accuracy of bidirectional current regulation
  • 1% Typical accuracy of channel current monitoring
  • I2C interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5A peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch

Typical applications

  • Battery Testing System (BTS), Super-cap or battery backup power converter
  • Boost Converter

More information

Products

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74651173
SPECWP-THRSH REDCUBE THR with external thread, 7 mm, 8.5 mm
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWP-THRSH REDCUBE THR with external thread
Width7 mm
Height8.5 mm
Outer ThreadM3 
Thread Length5 mm
Pins4 
–
MountTHR 
–
Rated Current50 A
–
Operating Temperature -55 °C up to +150 °C
–Check availability
61300211121
SPECWR-PHD Pin Header - Single, –, –
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
–
–
–
Pins2 
TypeStraight 
MountTHT 
Length5.08 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability