Universal Input, Non-Isolated Off-Line Regulator With Improved EMI Performance Evaluation Board for TSOT23-5 package type

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Product Description

The EV173A-J-00AEvaluation Board is designed to demonstrate the capabilities of MP173A. The MP173A is a primary-side constant voltage regulator, which provides accurate constant voltage (CV) regulation without Opto-coupler. It supports Buck, Buck-Boost, Boost and Flyback topologies.

The EV173A-J-00A Evaluation Board is designed as Buck application. EV173A-J-00A typically outputs 3W with a 12V/250mA load from 85VAC to 265VAC input.

The EV173A-J-00A has excellent efficiency and meets IEC61000-4-5 surge immunity and EN55022 conducted EMI requirements. Most of all, the radiation performance gets improved compared with MP173. MP173A features various protections, including thermal shutdown (TSD), VCC under-voltage lockout (UVLO), over-load protection (OLP), short-circuit protection (SCP), and open loop protection.

MP173AGJ is available in TSOT23-5 package.

EV173A-J-00A is an Evaluation Board for MP173A TSOT23-5 package type

Product Features

  • Primary-Side non-isolated Constant Voltage (CV) Control
  • < 30mW No-load power consumption
  • Up to 3W output power
  • Good EMI Performance
  • Limited Maximum Frequency
  • Multiple Protections: SCP, OCP, OTP, OLD and VCC UVLO
  • Low Cost and Simple External circuit


700V, Non-Isolated, Offline Regulator, Up to 280mA Output Current with Improved EMI Performance

The MP173A is a primary-side regulator that provides accurate constant voltage (CV) regulation without an optocoupler. It supports buck, boost, buck-boost, and flyback topologies.

The device’s integrated 700V MOSFET simplifies the structure and reduces cost. This feature optimizes the device for offline, low-power applications, such as home appliances and standby power.

The MP173A is a green mode operation regulator. Both the peak current and switching frequency lower as the load decreases. This feature provides excellent efficiency at light load, and improves the overall efficiency.

Protection features include thermal shutdown (TSD), VCC under-voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open-loop detection.

The MP173A is available in TSOT23-5 and SOIC-8 packages.

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.