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MP173 is a primary-side regulator that provides accurate constant voltage (CV) regulation without an opto-coupler. It supports buck, boost, buck-boost, and flyback topologies. It has an integrated 700 V MOSFET to simplify the structure and reduce cost. These features make it an ideal regulator for offline, low-power applications, such as home appliances and standby power. MP173 is a green-mode operation regulator. Both the peak current and switching frequency decrease as the load decreases. This feature provides excellent efficiency at light load and improves the overall average efficiency. MP173 has various protection features including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open-loop protection. MP173 is available in a small TSOT23-5 package and SOIC-8 package.
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Features & Benefits
- Primary-Side CV Control, Supporting Buck, Boost, Buck-Boost, and Flyback Topologies
- Integrated 700 V MOSFET and Current Source
- < 30 mW No-Load Power Consumption
- Up to 4 W Output Power
- Maximum DCM Output Current Less than 180 mA
- Maximum CCM Output Current Less than 280 mA
- Low VCC Operating Current
- Frequency Foldback
- Limited Maximum Frequency
- Peak-Current Compression
- Internally Biased VCC
- TSD, UVLO, OLP, SCP, Open-Loop Protection
EV173-J-00A Evaluation Kit Universal Input, Non-Isolated Off-Line Regulator Evaluation Board for the TSOT23-5 package type.
The EV173-J-00A evaluation board is designed to demonstrate the capabilities of MP173. The MP173 is a primary-side constant voltage regulator providing accurate constant voltage (CV) regulation without Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies.
The EV173-J-00A evaluation board is designed as Buck application. EV173-J-00A typically drives a 3W with a 12V/250mA load from 85VAC to265VAC, at 60/50Hz.
The EV173-J-00A has an excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. MP173 features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), over-load protection (OLP), short- circuit protection (SCP), and open-loop protection.
MP173 is available in small TSOT23-5 package and SOIC-8 package.
EV173-J-00A is the evaluation board for MP173 TSOT23-5 package type.