93% Efficiency, 400-W AC/DC reference design for avionics
PMP30763
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Key Document

Description

This is a compact, 30-V DC, 400-W reference design for avionics applications, accepting main frequencies between 400 Hz and 800 Hz. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on UCC28064A. This minimizes the PFC inductor size and reduces EMI filter requirements. The DC/DC is implemented by employing HB-LLC stage, using UCC256404. For efficiency improvement, synchronous rectification is used at secondary side with FETs driven by UCC24612.

Features
  • Overall efficiency of 92.5% at full load with peak efficiency > 93%
  • High power factor > 0.99, meets PFC regulations and current THD for DO-160 avionics requirements
  • ZCS avoidance feature and OVP sensing feature in LLC controller improves robustness and protects systems from overcurrent, short circuit and overvoltage to ensure safety
  • Small PCB form factor of 160 mm by 80 mm by 30 mm

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Schematic/Block Diagram

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Design Guide

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Design Files

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Parametrics
 PMP30763.1
(Output Voltage 1)
PMP30763.2
(Output Voltage 2)
Vin (Min) (V)96200
Vin (Max) (V)134260
Vout (Nom) (V)24030
Iout (Max) (A)1.813.3
Output Power (W)432399
Isolated/Non-IsolatedNon-IsolatedIsolated
Input TypeACDC
TopologyPFC- MultiphaseHalf Bridge- LLC

TI Devices (12)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD19531KCS  100V, N ch NexFET MOSFET™, single TO-220, 7.7mOhm  MOSFETs  Sample & Buy Not Available
INA181  26V, bi-directional, 350kHz current sense amplifier  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM4040  Fixed voltage, 45-µA, precision micropower shunt voltage reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
LP2951-N  100-mA, 30-V, low-dropout voltage regulator with power good & enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
LP2981  100-mA, 16-V, low-dropout voltage regulator with enable  Power management  Sample & Buy View Design Kits & Evaluation Modules
TL331  High Voltage Single Differential Comparator  Amplifiers  Sample & Buy Not Available
TL431LI  Adjustable precision shunt regulator with optimized reference current (pin layout: KRA)  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TLV171  36V Low-Power RRO General-Purpose Operational Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
UCC24612  High-frequency multi-mode synchronous rectifier controller  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC256404  LLC resonant controller with ultra-low power, ultra-quiet standby operation and high voltage startup  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules
UCC27517  4-A/4-A single-channel gate driver with 5-V UVLO and 13-ns prop delay in SOT-23 package  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC28064A  Natural Interleaving™ transition-mode PFC controller with high light-load efficiency  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD19531KCS Download
INA181 Download Download
Download
LM4040 Download
Download
Download
LP2951-N Download Download
Download Download
Download
Download
LP2981 Download Download
TL331 Download Download
TL431LI Download Download
TLV171 Download Download
Download
UCC24612 Download Download
UCC256404 Download Download
UCC27517 Download
UCC28064A Download Download

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Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 4888 27 Mar 2020
Design files (6)
Title Type Size (KB) Date
ZIP 856 27 Mar 2020
ZIP 3324 27 Mar 2020
PDF 1598 27 Mar 2020
PDF 370 27 Mar 2020
PDF 149 27 Mar 2020
PDF 578 27 Mar 2020

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