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STMicroelectronics STS6NF20V | Demoboard STEVAL-TTPPFC01 AN5964
99.3% efficiency, 2 kW, 3-channel interleaved totem pole PFC with resonant ZVS digital control
Overview
| Topology | Power Factor Correction |
| Input voltage | 90-253 V |
| Output 1 | 390 V |
| IC revision | 2.0 |
Description
Nowadays, in PFC for servers and telecom (for example, PSU for 5G base stations, grid connected smart systems) theachievement of an efficiency >99% is becoming mandatory. The demand for very high efficiency has a strong impact ontopologies, design parameters, materials, and control strategies.The STEVAL-TTPPFC01 offers a very high flat efficiency PFC solution in a full digital three-channel interleaved totem poletopology. A conversion efficiency of 99.3% is obtained using ST MDmesh DM6 superjunction power MOSFETs, as well as avery high power factor and low THDi. The PFC operates in the zero voltage switching (ZVS) resonant mode with hysteresiscurrent control, which is fully implemented in the STM32G474QE microcontroller, thanks to the integrated DACs, fast comparators, and high-resolution timer peripheral HRTIM, to ensure a high dynamic and precise cycle-by-cycle current control.The STEVAL-TTPPFC01 evaluation kit is a modular solution, which consists of a power board, which contains all the mainpassive devices and all the daughter boards plug connectors; a control board, which embeds the STM32G474QE microcontroller; an auxiliary power supply board, which generates all the voltages for driving, sensing, MCU, etc.; three high frequency half-bridge boards; a low-frequency half-bridge board.
Features
- Bridgeless topology: the large input bridge losses of conventional PFCs (diode forward voltage losses) are dramatically reduced thanks to the use of active switches for the mains rectification function (Rds (on) losses in a MOSFET).
- Interleaved architecture: thanks to the phase shedding (enabling/disabling the parallel channels basing on the load requirement) the light load efficiency is improved and a flat efficiency over the whole load range is obtained. Moreover, the superposition of the inductor currents of each boost cell results in a smooth mains current waveform (EMI filter and inductors volume reduction) and output capacitor loss reduction (lower equivalent inductor current ripple).
- Zero voltage switching (ZVS) resonant technique: eliminates the turn-on losses of the power switches over the full mains period to further improve converter efficiency
Typical applications
- Power Supply and converters
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | Operating Temperature | Safety Class | VIMP(V (DC)) | DF(%) | RISO | Ceramic Type | Packaging | VR 2(V (DC)) | dV/dt(V/µs) | DF @ 1 kHz(%) | Pitch(mm) | Q(%) | Z @ 100 MHz(Ω) | IR(A) | RDC max.(mΩ) | Z @ 25 MHz(Ω) | Fl(mm) | L(mm) | W(mm) | H(mm) | L(mH) | VR(V (DC)) | VT(V (AC)) | Material | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 10 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance10 pF | Capacitance±5% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Packaging7" Tape & Reel | – | – | – | – | Q-Factor600 % | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage50 V (DC) | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Capacitance±5% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Packaging7" Tape & Reel | – | – | – | – | Q-Factor1000 % | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage50 V (DC) | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 1 nF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance1 nF | Capacitance±5% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Packaging7" Tape & Reel | – | – | – | – | Q-Factor1000 % | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage25 V (DC) | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 2.2 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance2.2 nF | Capacitance±10% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage25 V (DC) | – | – | – | |||||
 | WCAP-CSSA Interference Suppression, 2.2 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSSA Interference Suppression | Capacitance2.2 nF | Capacitance±10% | Size2211 | Operating Temperature -55 °C up to +125 °C | Safety ClassX1 / Y2 | Impulse Voltage5000 V (DC) | Dissipation Factor2.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | Rated Voltage 23000 V (DC) | – | – | – | – | – | – | – | – | Pad Dimension0.6 mm | Length5.7 mm | Width2.8 mm | Height2.5 mm | – | Rated Voltage250 V (DC) | – | – | MountSMT-Chip | ||||
| WCAP-CSGP MLCCs 25 V(DC), 10 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance10 nF | Capacitance±10% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | Dissipation Factor3.5 % | Insulation Resistance10 GΩ | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage25 V (DC) | – | – | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | Capacitance100 nF | Capacitance±10% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | Dissipation Factor3.5 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage25 V (DC) | – | – | – | |||||
 | WCAP-FTX2 Film Capacitors, 470 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance470 nF | Capacitance±10% | SizePitch 12.5 mm | Operating Temperature -40 °C up to +105 °C | Safety ClassX2 | – | – | Insulation Resistance21.28 GΩ | – | PackagingBulk | Rated Voltage 2630 V (DC) | Rate of Voltage Rise280 V/µs | Dissipation Factor0.1 % | Pitch12.5 mm | – | – | – | – | – | – | Length15 mm | Width10 mm | Height16 mm | – | Rated Voltage275 V (DC) | – | – | MountBoxed THT | ||||
| WCAP-CSGP MLCCs 16 V(DC), 1 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance1 µF | Capacitance±10% | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | Dissipation Factor10 % | Insulation Resistance0.1 GΩ | Ceramic TypeX7R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Pad Dimension0.4 mm | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | Rated Voltage16 V (DC) | – | – | – | |||||
 | WCAP-FTBP Film Capacitors, 1 µF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTBP Film Capacitors | Capacitance1 µF | Capacitance±5% | SizePitch 15 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | Insulation Resistance10 GΩ | – | PackagingCarton | – | Rate of Voltage Rise85 V/µs | Dissipation Factor0.1 % | Pitch15 mm | – | – | – | – | – | – | Length18 mm | Width7 mm | Height13 mm | – | Rated Voltage250 V (DC) | – | – | – | ||||
| WCAP-FTX2 Film Capacitors, 3.3 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance3.3 µF | Capacitance±10% | SizePitch 27.5 mm | Operating Temperature -40 °C up to +105 °C | Safety ClassX2 | – | – | Insulation Resistance3.03 GΩ | – | PackagingBulk | Rated Voltage 2630 V (DC) | Rate of Voltage Rise130 V/µs | Dissipation Factor0.1 % | Pitch27.5 mm | – | – | – | – | – | – | Length31 mm | Width15.5 mm | Height29 mm | – | Rated Voltage275 V (DC) | – | – | MountBoxed THT | ||||
| WCAP-CSGP MLCCs 16 V(DC), 10 µF, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance10 µF | Capacitance±20% | Size0805 | Operating Temperature -55 °C up to +85 °C | – | – | Dissipation Factor10 % | Insulation Resistance0.01 GΩ | Ceramic TypeX5R Class II | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | – | Pad Dimension0.5 mm | Length2 mm | Width1.25 mm | Height1.25 mm | – | Rated Voltage16 V (DC) | – | – | – | |||||
 | WE-SUKW SMT EMI Suppression 5-Hole Ferrite Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-SUKW SMT EMI Suppression 5-Hole Ferrite Bead | – | – | – | Operating Temperature -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | Impedance @ 100 MHz580 Ω | Rated Current8.5 A | DC Resistance12 mΩ | Impedance @ 25 MHz425 Ω | Pad Dimension2 mm | Length11 mm | Width5 mm | Height4.65 mm | – | – | – | Material5 W 700 | MountSMT | ||||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | SizeXL | Operating Temperature -55 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current18 A | DC Resistance4.2 mΩ | – | – | Length36 mm | Width23 mm | Height34 mm | Inductance4.5 mH | Rated Voltage300 V (DC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | MountTHT | ||||
 | WE-CMB NiZn Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB NiZn Common Mode Power Line Choke | – | – | SizeS | Operating Temperature -40 °C up to +125 °C | – | – | – | – | – | – | – | – | – | – | – | – | Rated Current10 A | DC Resistance3 mΩ | – | – | Length18.5 mm | Width14.5 mm | Height22 mm | Inductance0.016 mH | Rated Voltage250 V (DC) | Insulation Test Voltage1500 V (AC) | MaterialNiZn | MountTHT |