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reference designLP8774x-Q1 | Demoboard LP877451Q1EVM

Texas Instruments LP8774x-Q1 | Demoboard LP877451Q1EVM

LP877451Q1EVM Evaluation Module

Overview

TopologyBuck-Boost Converter
Input voltage3.1-3.5 V
Output 15 V / 3 A

Description

The LP8774x-Q1 device is designed to meet the power management requirements of the AWR and IWR MMICs in various automotive and industrial radar applications. The device has three step-down DC/DC converters, a 5 V boost converter and a 1.8 V/3.3 V LDO. The LDO is powered from the boost and intended for xWR and peripheral devices IO supply. The device is controlled by an SPI serial interface and by enable signal.The step-down DC/DC converters support programmable switching frequency of 17.6 MHz, 8.8 MHz or 4.4 MHz and have low noise across wide frequency range which enables LDO-free power solution with minimal or no additional passive filtering. LP8774x-Q1 device offers flexible external component selection to optimize the solution in terms of performance or cost. The features of the device target safety-relevant applications with system-safety requirements up to ASIL-C level.

Features

  • Evaluation of LP877451A1RXVRQ1 device features and performance
  • Onboard wide VIN preregulator to generate 3.3-V input to the PMIC from 12-V battery supply
  • Onboard USB2ANY MCU to communicate with the Device GUI and evaluate device safety features like Q&A watchdog

Typical applications

  • Short range and medium range radar, Ultra-short range radar, Long range radar

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438356015
SPECWE-MAPI SMT Power Inductor, 1.5 µH, 8.6 A
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1.5 µH
Performance Rated Current8.6 A
Saturation Current @ 30%10.2 A
DC Resistance16 mΩ
Self Resonant Frequency48 MHz
Operating Voltage80 V
MountSMT 
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