Summary of MP17XA NON-ISOLATED OFFLINE REGULATORS
Monolithic Power Systems’ MP17xA series are non-isolated, primary-side constant-voltage regulators with an integrated 700 V MOSFET. They support buck, boost, buck-boost, and flyback topologies, deliver up to 280 mA output current, and offer low no-load power (<30 mW) with green-mode scaling (frequency and peak current reduce at light load). Protection features include TSD, UVLO, OLP, SCP, and open-loop detection. Available in TSOT23-5 and SOIC-8, they target offline low-power applications like home appliances and standby power.
Parts used in the MP17xA series project:
- MP17xA primary-side regulator IC (integrated 700 V MOSFET)
- External passive components for chosen topology (inductor)
- External passive components for chosen topology (capacitors)
- External passive components for chosen topology (diodes for boost/flyback as needed)
- PCB and layout supporting TSOT23-5 or SOIC-8 package
- Input AC/DC supply for offline operation
- Output load or load connector
MPS’ MP17xA series non-isolated offline regulators feature an integrated 700 V MOSFET and offer up to 280 mA output current with improved EMI performance
Monolithic Power Systems’ MP17xA series are primary-side regulators that provide accurate constant voltage (CV) regulation without an optocoupler.
These devices support buck, boost, buck-boost, and flyback topologies. The devices’ integrated 700 V MOSFET simplifies the structure and reduces cost. This feature optimizes the devices for offline, low-power applications, such as home appliances and standby power. The MP17xA series are green mode operation regulators. 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. These devices are available in TSOT23-5 and SOIC-8 packages.
Features
- Primary-side CV control
- Support buck, buck-boost, boost, and flyback topologies
- Integrated 700 V MOSFET and current source
- Under 30 mW no-load power consumption
- Up to 4 W output power
- Max. DCM output current below 180 mA
- Max. CCM output current below 280 mA
- Low VCC operating current
- Frequency foldback
- Limited max. frequency
- Peak current compression
- Internally biased VCC
Read more: MP17XA NON-ISOLATED OFFLINE REGULATORS
- What topologies do MP17xA devices support?
They support buck, boost, buck-boost, and flyback topologies. - Do MP17xA devices include an integrated MOSFET?
Yes, they include an integrated 700 V MOSFET and current source. - What is the maximum output current of the MP17xA series?
Maximum CCM output current is below 280 mA; DCM output current is below 180 mA. - Are MP17xA devices suitable for low-power standby applications?
Yes, they are optimized for offline, low-power applications such as home appliances and standby power. - What protection features are included in MP17xA devices?
They include thermal shutdown, VCC under-voltage lockout, overload protection, short-circuit protection, and open-loop detection. - What are the package options for the MP17xA series?
They are available in TSOT23-5 and SOIC-8 packages. - How do MP17xA devices improve efficiency at light load?
They operate in green mode where peak current and switching frequency lower as load decreases, improving light-load efficiency. - What is the no-load power consumption of MP17xA devices?
No-load power consumption is under 30 mW.
