Diodes Incorporated AL6562AS-13

Overview

AL6562AS-13 from Diodes Incorporated is a transition-mode (TM) current-mode Power Factor Correction (PFC) controller IC designed for single-stage LED drivers and PFC pre-regulators. It features a precision 2.5 V ±1% internal voltage reference, 40 µA dynamic OVP triggering current, 75–300 µs start-up timer, and totem-pole gate driver with 600 mA source / 800 mA sink capability. It operates across 85–265 V_AC input and supports up to 350 W applications in flat TVs, LED lighting, and IEC61000-3-2-compliant SMPS.

For engineers reviewing the AL6562AS-13 datasheet, AL6562AS-13 pinout, AL6562AS-13 application, or AL6562AS-13 equivalent, key selection criteria include its TM operation architecture, low 40 µA OVP trip threshold, 2.5 V error amplifier reference accuracy, ZCD-based zero-current turn-on timing, and SO-8 package compatibility with high-voltage auxiliary winding sensing.

Technical Context

The AL6562AS-13 implements a transition-mode PFC control loop using zero-current detection (ZCD) on Pin 5 to trigger MOSFET turn-on at inductor demagnetization, and a multiplier-based current reference (Pin 3 MULT + Pin 2 COMP) to determine turn-off timing via current sense comparison (Pin 4 CS). Its internal error amplifier (Pin 1 INV / Pin 2 COMP) regulates output voltage with 60–80 dB open-loop gain and 1 MHz GBW.

Functional safety is enhanced by dual OVP mechanisms: dynamic OVP triggers at 40 µA error amplifier output current (indicating abrupt overvoltage), while static OVP activates when the error amplifier saturates low under light-load conditions-both reducing quiescent current and enabling burst-mode recovery. The IC integrates UVLO with 11.0–13.0 V turn-on and 8.7–10.3 V turn-off thresholds, plus 2.5 V reference stability over –25°C to +125°C.

Key Specifications

Pinout & Package

AL6562AS-13 is housed in an SO-8 surface-mount package with exposed pad (RoHS-compliant, halogen-free "Green" molding compound). Thermal resistance R_θJA is 150°C/W; maximum junction temperature is +150°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transition-mode PFC controller applications.

Compared with FAN7930C and ICE2PCS01, AL6562AS-13 delivers tighter reference accuracy (2.5 V ±1%), lower OVP trip threshold (40 µA vs. 150 µA/none), and dedicated THD-reduction logic-making it optimal for sub-350 W LED drivers and consumer electronics where PF, efficiency, and EMI are critical.

Availability

AL6562AS-13 is available at Aetrix Electronics and suitable for LED lighting drivers, flat-panel TV power supplies, and desktop PC SMPS requiring stable component supply, long-term lifecycle support, and RoHS-compliant "Green" packaging.

Supply support for AL6562AS-13 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, specializing in high-performance power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AL6562AS-13 belongs to Diodes' LED lighting and PFC controller product line, engineered specifically for cost-effective, high-power-factor AC-DC conversion in single-stage topologies targeting energy-efficient lighting and consumer power supplies.

FAQ

What is the function of the INV pin beyond voltage feedback?

Pin 1 (INV) serves as both the inverting input of the internal error amplifier and a non-latched enable/disable control. When voltage at INV drops below 300 mV, the IC shuts down and enters ultra-low-quiescent-current mode (<90 µA); recovery requires voltage to exceed 480 mV. This dual function enables remote ON/OFF control and provides fail-safe shutdown if the feedback divider's lower resistor shorts to ground.

How does the AL6562AS-13 achieve low THD in LED driver applications?

The AL6562AS-13 incorporates dedicated THD optimization circuitry that adds a programmable positive offset to the multiplier output near AC line zero-crossings. This artificially extends MOSFET conduction time when instantaneous line voltage is low, minimizing conduction dead-angle and fully discharging the bridge rectifier's high-frequency filter capacitor-reducing current distortion and achieving THD <10%.

Can the AL6562AS-13 drive a 650 V MOSFET directly?

Yes-the GD pin (Pin 7) features a totem-pole output with 600 mA source / 800 mA sink capability and internal 12 V clamp, enabling direct drive of 650 V MOSFETs like the 11N65C3. The clamp prevents gate overvoltage even when VCC exceeds 12 V, and the high peak current ensures fast turn-on/turn-off transitions without external buffers.

What protection features does the AL6562AS-13 include beyond OVP?

In addition to dual-mode OVP (dynamic and static), the AL6562AS-13 integrates UVLO with 2.5 V hysteresis, internal 25 V Zener clamp on VCC, 200 ns leading-edge blanking on CS, ZCD input clamping (0.3–6.1 V), and thermal shutdown at +150°C junction temperature. These features collectively ensure robust operation during startup transients, load disconnects, and ambient temperature extremes.