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Texas Instruments TPS40210DGQR | Demoboard PMP30104
Multiplied SEPIC Constant Current Capacitor Charger (15Vin to 400V/@ 80mA) Reference Design
Overview
| Topology | SEPIC Buck-Boost Topology |
| Input voltage | 15 V |
| Output 1 | 400 V / 0.08 A |
| Output 2 | 420 V / 0.08 A |
| IC revision | B |
Description
A SEPIC converter is used to charge a load capacitor (up to 15000uF) up to 400V/420V (selectable). The input voltage range is 15V +/-10% and the constant output charging current 80mA. The multiplied SEPIC topology has several advantages compared to Boost + charge pump mainly thanks to reduce peak and RMS currents in the multiplier of the SEPIC.
Features
Remarks: Schematic and BOM is added with Test procedure PDF
huge ratio possible by multiplied single-stage SEPIC (15Vin to 420Vout)No spikes on switch-nodes compared to flyback solutionGood efficiency curve between 50Vout and 420Vout in the range of 80% to 87%Two active loops: CV and CC avoid overvoltage in case of load disconnection
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | Wire Section | L(µH) | IRP,40K(A) | ISAT(A) | RDC max.(mΩ) | fres(MHz) | Size | Version | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PD SMT Power Inductor, 2, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Pins2 | – | – | – | – | Inductance1000 µH | Performance Rated Current0.37 A | Saturation Current0.25 A | DC Resistance6000 mΩ | Self Resonant Frequency2.2 MHz | Size7345 | VersionStandard | Saturation Current @ 10%0.25 A | Saturation Current @ 30%0.31 A | Rated Current0.2 A | ||||
| WE-PD SMT Power Inductor, 2, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Pins2 | – | – | – | – | Inductance47 µH | Performance Rated Current4.9 A | – | DC Resistance60 mΩ | Self Resonant Frequency6.5 MHz | Size1210 | VersionStandard | Saturation Current @ 10%4.5 A | Saturation Current @ 30%5.5 A | Rated Current3.8 A | ||||
 | WR-TBL Series 101 - 5.00 mm Horizontal Entry Modular, 2, Wire Protector | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 101 - 5.00 mm Horizontal Entry Modular | Pins2 | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 26 to 14 (AWG) 0.5 to 2.5 (mm²) | – | – | – | – | – | – | – | – | – | – |