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reference designTPS40170 | Demoboard PMP6867

Texas Instruments TPS40170 | Demoboard PMP6867

9V - 32V input to -28V/1.5A negative output buck-boost LED current regulator

Overview

TopologyBuck-Boost Converter
Input voltage9-32 V
Output 1-28 V / 1.5 A
IC revisionC

Description

This reference design uses the TPS40170 sync buck controller in a buck-boost converter to regulate the current in a series string of 6 to 8 LEDs (-28V) at up to 1.5A. Efficiency is greater than 93%. The output current can be adjusted with an external control voltage.

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L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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74435573300
SPECWE-HCI SMT Flat Wire High Current Inductor, 33 µH, 8.7 A
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance33 µH
Performance Rated Current8.7 A
Saturation Current @ 10%8 A
Saturation Current @ 30%9 A
DC Resistance21.7 mΩ
Self Resonant Frequency9.5 MHz
MaterialMnZn 
Packaging Unit150 
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