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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 / 56 A |
| Output 2 | 56.2 V / 28 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. (°) | Pitch (mm) | Gender | Type | Mount | Working Voltage (V (AC)) | PCB/Cable/Panel | Contact Resistance (mΩ) | Tol. R | L (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | fres (MHz) | W (mm) | H (mm) | IR (A) | Ti | Tl (mm) | Pins (Value) (pcs) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 150060VS75000 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 570 | Bright Green | 572 | 40 | 2 | AlInGaP | 140 | – | – | – | SMT | – | – | – | – | 1.6 | Tape and Reel | – | – | – | – | 0.8 | 0.7 | – | – | – | – | ||
| 150060RS75000 | SPEC | 25 files RAY files
| Active i| Production is active. Expected lifetime: >10 years. | WL-SMCW SMT Mono-color Chip LED Waterclear | 625 | Red | 630 | 250 | 2 | AlInGaP | 140 | – | – | – | SMT | – | – | – | – | 1.6 | Tape and Reel | – | – | – | – | 0.8 | 0.7 | – | – | – | – | ||
 | 744043470 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TPC SMT Tiny Power Inductor | – | – | – | – | – | – | – | – | – | – | SMT | – | – | – | – | 4.8 | – | 47 | 0.75 | 0.5 | 10 | 4.8 | 2.8 | – | – | – | 2 | ||
 | 653006114822 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-WTB 1.25 mm Male Vertical Shrouded Header | – | – | – | – | – | – | – | 1.25 | Male | Vertical | THT | 125 | PCB | 20 | max. | 9.25 | Tube | – | 1 | – | – | – | – | 1 | – | – | 6 | |
 | 74650074R | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | – | – | THR | – | – | – | – | – | Tape and Reel | – | 50 | – | – | 7 | 3 | – | M4 | 2.5 | 4 | |
 | 74650094R | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | – | – | THR | – | – | – | – | – | Tape and Reel | – | 85 | – | – | 10 | 3.5 | – | M4 | 3 | 8 | |
| 750344830 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 150060VS75000 | SPEC | |
| 150060RS75000 | SPEC | |
| 744043470 | SPEC | |
| 653006114822 | SPEC | – |
| 74650074R | SPEC | – |
| 74650094R | SPEC | – |
| 750344830 | SPEC | – |
| Samples |
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| 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. (°) | Pitch (mm) | Gender | Type | Mount | Working Voltage (V (AC)) | PCB/Cable/Panel | Contact Resistance (mΩ) | Tol. R | L (mm) | Packaging | L (µH) | IR (A) | ISAT (A) | fres (MHz) | W (mm) | H (mm) | IR (A) | Ti | Tl (mm) | Pins (Value) (pcs) | Samples |
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