Other Consumer SMPS
Style and Performance
CGD ICeGaN® power devices enable super-compact consumer products by minimising the space needed for mains power conversion while meeting new regulatory energy consumption requirements.
- TV
- Set Top Box
- Gaming
- All-in-one PC
Application Requirements:
Power Factor Correction (PFC)
Normally required in most jurisdictions as the SMPS power level increases.
Very low standby power
Required in most jurisdictions - not only for “no load” situations but also in very light load conditions for products that are always-on.
Compact size
Increasing the switching frequency for the power conversion stages allows for smaller sized transformers and capacitors, although power losses will typically increase. Use ICeGaN® technology for both small size and high efficiency.
High efficiency
Power conversion efficiency is both a regulatory and application requirement. For very compact products, the waste heat must be minimised to avoid internal overheating. For always-on products, power efficiency is also important in light load conditions and brief periods of activity. Achieve High Efficiency as well as High Frequency operation by using CGDs ICeGaN® technology.
Techniques & Topologies
LLC DC-DC converter
A DC-DC conversion provides a low voltage output, current regulation, and safety isolation. The LLC configuration achieves very high efficiency because it can operate in zero-volt and zero-current switching mode, which greatly reduces losses. High frequency operation, enabled by CGD GaN technology ensures also best in class power density.
Totem-Pole Power Factor Correction
After a PFC stage, DC-DC conversion provides low voltage output, current regulation, and safety isolation suitable for operating the load. The LLC configuration achieves very high efficiency because it can operate in zero-volt and zero-current switching mode, which greatly reduces losses. High frequency operation, enabled by CGD GaN technology means small size as well.
Flyback DC-DC converter
In lower power, less demanding applications, flyback converters with single power switches can offer economical solutions. If some flicker is acceptable, then power factor correction and DC-DC conversion can be combined in one stage. Power losses can be minimised by using quasi-resonant operation. Active clamp Flyback for optimised losses requires an additional low power switch but is valuable for best performance. High frequency operation, enabled by ICeGaN® achieves all of this as well as compact overall size.
Documents
Application Notes
CGD-AN2201-ICeGaN in LLC Application Note
2022-03-21 | .pdf | 2386.29KB
CGD-AN2206-Current Sensing with ICeGaN Application Note
2024-03-20 | .pdf | 1535.44KB
CGD_AN2207_ICeGaN_HEMT PCB_Layout_Guide
2022-03-21 | .pdf | 1821.46KB
CGD-AN2302 - How to use ICeGaN
2024-05-27 | .pdf | 7380.81KB