Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Primary Side Regulation Controllers and Switchers


PSR Controller with Peak Load Mode

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AP3190P is a high-performance offline PSR AC/DC power-supply controller. It is specially designed for the application that require the higher efficiency at light load and cost effectiveness. Using the multi-mode control scheme, the AP3190P can also achieve high conversion efficiency with full load conditions.

At heavy load and low line, the AP3190P will operate in QR mode to achieve high performance. When the load decreasing, it will enter into fixed switching frequency operating mode. To optimize product performance, the fixed frequency is different in high (60kHz) and low line (80kHz).

At light load or no load the IC will operate in burst mode to minimize power consumption. The AP3190P is designed to authorize a transient peak power excursion for peak load. It means the OCP reference can be increased to 1.75 times when the peak event disappears.

The AP3190P provides comprehensive protections without additional circuitry. It contains VCC over voltage protection, output over voltage protection, output short circuit protection, etc.

The AP3190P has adjustable OTP by external NTC resistor. It consumes less than 65mW input power at no load condition with high line voltage.

The AP3190P is packaged in SOT26 (Type SM).


  • Burst Mode Operation for Light-Load High Efficiency (at 10% loading > 80%)
  • A Transient Peak Power Excursion for Peak Load
  • Primary Side Control for Eliminating Opto-Coupler
  • 65mW No-Load Input Power
  • Adjustable Over Temperature Protection
  • Multiple QR/AM Mode to Improve Audio Noise and Efficiency
  • QR for Higher Efficiency and Better EMI
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • IoT offline powers
  • Smart speakers
  • Set-top box power supplies
  • Network adaptors

Product Specifications

Product Parameters

OperatingCurrent (µA) 450
StandbyPower (Max) (mW) 65
CableCompensation 2%
Power Rating (W) 45
Release Date 202306

Related Content


Technical Documents

Recommended Soldering Techniques