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reference designLM46001PWPR | Demoboard TIDA-01057

Texas Instruments LM46001PWPR | Demoboard TIDA-01057

3.5 to 60V, 1A Synchronous Step-Down Voltage Converter

Overview

TopologyBuck Converter
Input voltage3.5-60 V
Switching frequency200-2200 kHz
Output 12 A

Description

This reference design is designed for high performance data acquisition(DAQ) systems to improve the dynamic range of 20 bit differential input ADCs. Many DAQ systems require the measurement capability at a wide FSR (Full Scale Range) in order to obtain sufficient signal dynamic range. Many earlier reference designs for SAR ADCs have used the THS4551 FDA (fully differential amplifier). However, the THS4551 is limited to a 5.4V maximum supply which is not sufficient for realizing the true 10Vpp differential output (10V FSR) required to maximize the dynamic range of SAR ADCs with a 5V reference. This reference design explores the benefits of a true 10Vpp differential output by implementing TI's new THS4561 FDA which has a maximum supply of 12.6V. You will see that this design was able to achieve superior performance to the previous design (TIDA-01054) while also lowering overall power consumption.

Features

24-µA Quiescent Current in RegulationHigh Efficiency at Light Load (DCM and PFM)Meets EN55022/CISPR 22 EMI standardsIntegrated Synchronous RectificationAdjustable Switching Frequency: 200 kHz to 2.2 MHz (500 kHz default)

Typical applications

  • Sub-AM Band 12-V and 24-V Automotive / Commercial Vehicle Power Supplies
  • Telecommunications Systems
  • Industrial Power Supplies
  • General Purpose Wide VIN Regulation / High Efficiency Point-Of-Load Regulation

More information

Parts approved by Texas Instruments

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150060RS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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Size0603 
Operating Temperature -40 °C up to +85 °C
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Length1.6 mm
Width0.8 mm
Height0.7 mm
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PackagingTape and Reel 
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MountSMT 
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Packaging Unit4000 
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744025006
SPECWE-TPC SMT Tiny Power Inductor, –, –
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Downloads9 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-TPC SMT Tiny Power Inductor
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Size2828 
Operating Temperature -40 °C up to +125 °C
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Length2.8 mm
Width2.8 mm
Height2.8 mm
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Inductance6.8 µH
Rated Current1.1 A
Saturation Current1.3 A
Self Resonant Frequency59 MHz
MountSMT 
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Packaging Unit550 
Pins2 
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744031680
SPECWE-TPC SMT Tiny Power Inductor, –, –
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-TPC SMT Tiny Power Inductor
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Size3816 
Operating Temperature -40 °C up to +125 °C
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Length3.8 mm
Width3.8 mm
Height1.65 mm
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Inductance68 µH
Rated Current0.32 A
Saturation Current0.22 A
Self Resonant Frequency12 MHz
MountSMT 
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Packaging Unit1000 
Pins2 
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885012006057
SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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ActiveProduction is active. Expected lifetime: >10 years.
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Product seriesWCAP-CSGP MLCCs 50 V(DC)
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Capacitance100 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Packaging Unit4000 
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9774050360R
SPECWA-SMSI SMT Steel Spacer with internal Thread M3, –, –
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Downloads7 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SMSI SMT Steel Spacer with internal Thread M3
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Operating Temperature -55 °C up to +150 °C
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Length5 mm
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PackagingTape and Reel 
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Inner ThreadM3 
Inner Diameter4.2 mm
Outer Diameter6 mm
Packaging Unit650 
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61300211121
SPECWR-PHD Pin Header - Single, –, –
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Downloads7 files

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ActiveProduction is active. Expected lifetime: >10 years.
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Product seriesWR-PHD Pin Header - Single
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length5.08 mm
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PackagingBag 
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Rated Current3 A
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MountTHT 
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Pins2 
TypeStraight 
Working Voltage250 V (AC)
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61300311121
SPECWR-PHD Pin Header - Single, –, –
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Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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Operating Temperature -40 °C up to +105 °C
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Insulation Resistance1000 MΩ
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Length7.62 mm
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PackagingBag 
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Rated Current3 A
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MountTHT 
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Pins3 
TypeStraight 
Working Voltage250 V (AC)
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