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reference designUCD3138064A | Demoboard PMP20587

Texas Instruments UCD3138064A | Demoboard PMP20587

Highly Integrated Digital Controller for Isolated Power

Overview

TopologyBuck-Boost Converter
Input voltage-36 - -62 V
Switching frequency2000 kHz
Output 148 V / 12.5 A
IC revisionD

Description

This reference design uses UCD3138064A as a digital controller to control two-phase two-rail inverting buck-boost. This non-isolated converter is used for wireless radio power. The input voltage is from -35 V to -60 V. There are two outputs. The default output voltage of rail 1 is 32 V and max current is 8.5 A; the default output voltage of rail 2 is 48 V and max current is 5.5 A. The output voltage is adjustable from 30 V to 56 V. With some component changes and firmware changes, the hardware can be used for current mode control or transition mode control to increase power and improve load transient. Test results of three controls are provided respectively.

Features

  • Inverting buck boost for -48-V to 48-V system
  • Transient response with less than +/- 3% -overshoot/undershoot voltage

Typical applications

  • Merchant DC/DC

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(nH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Wire Type
LR(nH)
IR(A)
RDC(mΩ)
Material
SamplesAvailability & Sample
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744308040
SPECWE-HCM SMT High Current Flat Wire Inductor, 400 nH, 54.3 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance400 nH
Performance Rated Current54.3 A
Saturation Current @ 10%23.8 A
Saturation Current @ 30%28.3 A
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Self Resonant Frequency25 MHz
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Rated Inductance345 nH
Rated Current25 A
DC Resistance0.37 mΩ
MaterialMnZn 
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7443642200
SPECWE-HCF SMT High Current Inductor, 22000 nH, 34.95 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCF SMT High Current Inductor
Inductance22000 nH
Performance Rated Current34.95 A
Saturation Current @ 10%15.5 A
Saturation Current @ 30%18 A
DC Resistance2.64 mΩ
Self Resonant Frequency9 MHz
Wire TypeFlat 
Rated Inductance5000 nH
Rated Current35 A
DC Resistance2.4 mΩ
MaterialMnZn 
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