Diodes Incorporated AP3190PW6-7

Overview

AP3190PW6-7 from Diodes Incorporated is a primary-side regulated (PSR) multi-mode AC/DC controller IC for offline IoT power supplies. It delivers 80%+ efficiency at 10% load, supports QR/AM/Burst operation modes, and integrates adjustable OTP, OVP, SCP, and peak-load protection - enabling optocoupler-free 5–24W flyback designs for smart speakers and network adaptors.

For engineers reviewing the AP3190PW6-7 datasheet, AP3190PW6-7 pinout, AP3190PW6-7 application, or AP3190PW6-7 equivalent, key selection criteria include its 60/80kHz adaptive frequency switching, 2.74V FB threshold with cable compensation, 1.75× OCP boost for transient peaks, and SOT26 package compatibility with high-density PCB layouts.

Technical Context

The AP3190PW6-7 implements primary-side regulation using auxiliary winding voltage sampling at the FB pin to achieve ±3% CV accuracy without secondary-side feedback. Its valley-detection circuit monitors V_DS via FB to enable quasi-resonant (QR) turn-on at low line/heavy load, reducing MOSFET switching loss and EMI.

Multi-mode control dynamically selects between QR (low-line), AM2 (60kHz high-line / 80kHz low-line), and burst mode (no-load), with leading-edge blanking (275ns) and line-compensated current sensing (via R_{LINE_IC} = 173Ω) ensuring stable CC regulation across 90–264V_AC input.

Key Specifications

Pinout & Package

SOT26 (Type SM) package: 6-pin, surface-mount, lead-free, RoHS-compliant, 2.9mm × 2.8mm footprint with 0.95mm height and 0.95mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PSR AC/DC controller applications.

Compared with MP6004GJ-Z and LNK3206P, the AP3190PW6-7 uniquely combines burst-mode ultra-low standby, adaptive QR/AM frequency, and 1.75× transient OCP - making it optimal for thermally constrained, audio-capable IoT power supplies where both efficiency and dynamic response are critical.

Availability

AP3190PW6-7 is available at Aetrix Electronics and suitable for IoT offline power supplies, smart speaker adapters, and network adaptor power modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AP3190PW6-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.

The AP3190P belongs to Diodes' IoT Power Solutions product line, engineered specifically for high-efficiency, low-standby, optocoupler-free AC/DC conversion in space-constrained consumer and industrial edge devices.

FAQ

What is the purpose of the OTP pin on the AP3190PW6-7?

The OTP pin accepts an external NTC thermistor to implement programmable overtemperature protection. An internal 100μA current source develops a voltage across the NTC; when this drops below 0.50V, the IC shuts down. Recovery occurs at 0.75V, providing 40°C hysteresis. This allows precise thermal trip points tailored to heatsink and enclosure conditions.

How does the AP3190PW6-7 achieve quasi-resonant operation without a dedicated ZCD pin?

The AP3190PW6-7 uses the FB pin for dual-purpose sensing: it samples auxiliary winding voltage for CV regulation and detects the V_DS valley waveform during MOSFET off-time. Internal circuitry identifies the minimum point in the ringing waveform and triggers OUT turn-on at that instant - eliminating need for a separate zero-crossing detection pin while maintaining QR efficiency and EMI benefits.

Can the AP3190PW6-7 support constant-current regulation for LED drivers?

Yes - the AP3190PW6-7 implements precise constant-current regulation via its current-sense (CS) pin and internal OCP comparator. By configuring the sense resistor and adjusting line compensation (R_{LINE_IC} = 173Ω), it maintains ±5% CC accuracy across 90–264V_AC input, making it suitable for isolated LED drivers up to 24W with minimal external components.

What is the function of the "sample time" (tSAMPLE) in the AP3190PW6-7's CV control loop?

tSAMPLE defines the precise moment within the MOSFET on-time when the FB pin voltage is sampled for CV regulation. At heavy load, tSAMPLE is 67% of t_ON; at light load, it shifts to 51%. This dynamic sampling point compensates for diode forward-voltage variation and ensures stable output voltage despite changing load and line conditions - critical for maintaining ±3% regulation accuracy.