Renesas IW2206-11

Overview

The iW2206-11 from Renesas Electronics is a digital power factor correction (PFC) boost controller in SOT-23-6 package, designed for two-stage AC/DC power supplies requiring high PF (>0.9), low THD (<20%), and ultra-low standby power (<150mW at 230VAC up to 100W). It supports universal AC input up to 347VAC, delivers <±3% line/load regulation, and achieves PFC ready time under 0.2s.

For engineers reviewing the iW2206-11 datasheet, iW2206-11 pinout, iW2206-11 application, or iW2206-11 equivalent, key selection criteria include its 347VAC-rated input capability, integrated adaptive current limit for audible noise suppression, configurable DC bus voltage mode, and full protection suite including OVP, OPP, brown-out, and over-temperature.

Technical Context

The iW2206-11 implements transition-mode (TM) digital control with Dialog's PF-Boost™ technology to maintain >0.9 power factor and <20% THD across 90–347VAC input and 33–100% load. Its digital loop eliminates external compensation components while ensuring stability under all operating conditions.

It features a single-gate-drive output (pin 6) with programmable peak current sensing via CS/ZCD/CFG (pin 4), analog feedback of DC bus voltage (VFB, pin 2), and AC line monitoring (VIN, pin 3). The device operates from 8.0–20V VCC and supports both "following" and "fixed" DC bus configurations.

Key Specifications

Pinout & Package

The iW2206-11 is housed in a thermally enhanced SOT-23-6 package with exposed pad (θJA = 190°C/W), optimized for compact, high-density PFC stage layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital PFC controller applications.

Compared with UCC28056DR and ICE3PCS01G, the iW2206-11 provides superior high-line capability (347VAC), lower THD, and integrated digital control that eliminates compensation components-enabling smaller, quieter, and more compliant PFC stages in space-constrained industrial and lighting designs.

Availability

iW2206-11 is available at Aetrix Electronics and suitable for two-stage LED lighting drivers, industrial 277VAC adapters, and universal-input AC/DC power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for iW2206-11 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The iW2206-11 belongs to Renesas' high-performance digital PFC controller product line, engineered specifically for compact, high-efficiency two-stage AC/DC conversion in LED lighting, industrial adapters, and medical power supplies.

FAQ

What is the maximum AC input voltage supported by the iW2206-11?

The iW2206-11 supports up to 347VAC input voltage, as explicitly specified in the Ordering Information table of the Renesas Product Summary Rev. 1.1. This extended rating enables reliable operation in 277VAC lighting systems and high-line industrial applications where transient overvoltage margins exceed standard 305VAC limits. The iW2206-11 maintains full functionality-including PF >0.9 and THD <20%-across this extended range when loaded ≥33% of nominal.

How does the iW2206-11 achieve <150mW standby power?

The iW2206-11 achieves <150mW standby power at 230VAC input up to 100W through ultra-low quiescent current design and intelligent gate drive management. Its digital control engine disables non-essential functions during no-load conditions while maintaining readiness to resume PFC operation within 0.2s. This eliminates the need for external PFC disable circuitry, reducing BOM count and improving system reliability. The iW2206-11 sustains this performance without compromising protection coverage or regulation accuracy.

Does the iW2206-11 require external loop compensation components?

No, the iW2206-11 does not require external loop compensation components. Its fully digital control architecture implements an adaptive, self-tuning control loop that maintains stability across all operating conditions-including full AC line and load ranges-without external resistors or capacitors. This eliminates tuning effort and layout sensitivity associated with analog compensation networks. The iW2206-11's digital loop is integral to its PF-Boost™ technology and is confirmed in the Product Summary description of "digital control eliminates the need for external loop compensation."

What protection features are integrated into the iW2206-11?

The iW2206-11 integrates eight protection features: output over-voltage (OVP), output over-power (OPP), AC over-voltage, AC under-voltage (brown-out), cycle-by-cycle peak current limit, loop-open, current-sense-resistor short, and over-temperature protection. All protections are implemented in hardware with defined fault responses-either auto-restart or latch-off-ensuring robust system-level safety. These features are documented in Sections 1 and 3 of the Renesas Product Summary and eliminate the need for discrete protection ICs in most two-stage PFC designs.

Can the iW2206-11 be used in isolated versus non-isolated LED driver topologies?

Yes, the iW2206-11 is validated for both isolated and non-isolated two-stage dimmable LED driver topologies. Figure 3.2 shows its use with iW3637 and iW350 in a non-isolated buck-boost LED driver, while Figure 3.3 demonstrates implementation with the same companion ICs in an isolated flyback-based LED driver. In both cases, the iW2206-11 regulates the intermediate DC bus, and its configurable output voltage mode supports either "following" or "fixed" bus strategies depending on downstream stage requirements.