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STMicroelectronics VIPER26HD | Demoboard STDES-3KWTLCP Control Board
3 kW telecom rectifier reference design based on the STM32G474RBT6 digital power MCU
Overview
| Topology | Full-Bridge Converter symmetrical isolated |
| Input voltage | 90-264 V |
| Output 1 | 56.2 V / 28 A |
| Output 2 | 56.2 V / 56 A |
| IC revision | 1 |
Description
The STDES-3KWTLCP reference design introduces a complete ST digital power solution for a 3 kW/53.5 V power supply targeting the latest 5G telecom rectifier application.The circuit configuration consists of a front-end AC-DC bridgeless totem pole converter and a back-end DC-DC isolated fullbridge LLC converter. The front-end totem pole converter provides power factor correction (PFC) and total harmonic distortion (THD). The LLC converter provides safety isolation and a tightly regulated output voltage.This reference design opens the path to a compact solution and offers a high peak efficiency. The measured peak efficiency of the complete PSU at 230 VAC is 96.3%. The overall outline dimensions of the PSU are 105 mm x 281 mm x 41 mm, which yields a power density up to 40 W/inch³.The STDES-3KWTLCP is a fully assembled kit developed for performance evaluation only, not available for sale.This document describes the converter hardware, a summary of the experimental results, and the design recommendations for the complete ST solution.
Features
- Input voltage range: 90 to 264 VAC
- Output voltage: 53.5 V
- Maximum output power: 3 kW at 230 V, 1.5 kW at 115 VAC
- Peak efficiency: 96.3%
- Power density: 40 W/in3
- Power factor >0.98 at 100% load
- Total harmonic distortion <5% at 100% load
Typical applications
- Server Telecom
- Power/On Board
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | Type | PCB/Cable/Panel | L(mm) | Packaging | W(mm) | H(mm) | IR(A) | Ti | Tl(mm) | Pins | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]570 nm | Emitting ColorBright Green | Peak Wavelength [typ.]572 nm | Luminous Intensity [typ.]40 mcd | Forward Voltage [typ.]2 V | Chip TechnologyAlInGaP | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | MountSMT | – | – | Length1.6 mm | PackagingTape and Reel | Width0.8 mm | Height0.7 mm | – | – | – | – | ||||
| WL-SMCW SMT Mono-color Chip LED Waterclear, 625 nm, Red | Downloads26 files RAY files
| Status Activei| Production 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 ° | – | – | – | – | MountSMT | – | – | Length1.6 mm | PackagingTape and Reel | Width0.8 mm | Height0.7 mm | – | – | – | – | |||
 | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | Inductance47 µH | Rated Current0.75 A | Saturation Current0.5 A | Self Resonant Frequency10 MHz | MountSMT | – | – | Length4.8 mm | – | Width4.8 mm | Height2.8 mm | – | – | – | Pins2 | ||||
 | WR-WTB 1.25 mm Male Header, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-WTB 1.25 mm Male Header | – | – | – | – | – | – | – | – | Rated Current1 A | – | – | MountTHT | TypeVertical | PCB/Cable/PanelPCB | Length9.25 mm | PackagingTube | – | – | Rated Current1 A | – | – | Pins6 | ||
 | WP-THRBU REDCUBE THR with internal through-hole thread, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | Rated Current50 A | – | – | MountTHR | – | – | – | PackagingTape and Reel | Width7 mm | Height3 mm | – | Inner ThreadM4 | Thread Length2.5 mm | Pins4 | |||
 | WP-THRBU REDCUBE THR with internal through-hole thread, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | Rated Current85 A | – | – | MountTHR | – | – | – | PackagingTape and Reel | Width10 mm | Height3.5 mm | – | Inner ThreadM4 | Thread Length3 mm | Pins8 | |||
750344830 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |