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Power Integrations TOP7078E | Demoboard DER-1019
DER-1019 - 356 W Isolated Flyback for Industrial Power Supplies Using TOPSwitchGaN
Overview
| Topology | Flyback Converter |
| Input voltage | 165-265 V |
| IC revision | A |
Description
This engineering report describes a flyback converter that provides an isolated output of 356W at 89 V intended for an e-bike battery charger application. This power supply utilizes the TOP7078E IC from the TOPSwitchGaN family of ICs.TOPSwitchGaN IC integrates an 800 V PowiGaN switch and a multi‑mode flyback controller capable of operating in both Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM), enabling high‑efficiency from light load to full load.The power supply delivers a 89 V constant‑voltage output and provides constant‑current charging down to 0 V across an input range is 165 VAC to 265 VAC. The design is optimized for high efficiency.The report contains the power supply specification, bill of materials (BOM), transformer construction, schematic and printed circuit board (PCB) layout, along with performance dataand circuit waveforms.
Features
Input: 165 VAC - 265 VACOutput: 89 V; 4 A91% full load efficiency at 230 VAC
91 % average efficiency at 230 VACUltrawide constant current region (88 V – 0 V)Low component count: 89 pcsExcellent transient load response
Typical applications
- Tools and E-bike charger
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Z @ 100 MHz(Ω) | Zmax(Ω) | RDC(Ω) | Type | L(µH) | IR(A) | RDC max.(Ω) | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | Inductance100 µH | Rated Current6 A | DC Resistance0.035 Ω | –Check availability | ||
 | SPECWE-CBA SMT EMI Suppression Ferrite Bead, 48 Ω, 90 Ω | Availability – | Downloads10 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBA SMT EMI Suppression Ferrite Bead | Impedance @ 100 MHz48 Ω | Maximum Impedance90 Ω | DC Resistance0.005 Ω | TypeHigh Current | – | Rated Current6 A | – | –Check availability |
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |