STR-W6072S - Off-Line PWM Controller with 800V MOSFET | Sanken
部品番号: STR-W6072S ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.89 | $945.00 |
| 1,000 | $1.62 | $1,620.00 |
STR-W6072S 概要
An off-line PWM controller with integrated MOSFET (sometimes called a Power IC or Power Supply Control IC) is a category of power-management semiconductor that replaces a discrete PWM controller plus external MOSFET pair. Within the system hierarchy, this device sits between an analog PWM controller IC and a high-voltage switching MOSFET, integrating both functions to reduce BOM count and simplify EMI layout. The integrated approach also shortens high-current loops between the MOSFET drain, the transformer primary, and the controller's current-sense input, lowering radiated EMI.
The STR-W6072S operates from a universal AC input (via a rectified 100 V to 400 V DC bus) and incorporates an auto-standby function that switches between normal PWM operation and burst oscillation under light-load conditions. This auto-standby behavior yields low standby power consumption, helping designs meet modern energy-efficiency regulations for home appliances and consumer electronics. Built-in protections include over-current protection (OCP), over-voltage protection (OVP), and thermal shutdown.
Internally the device uses a current-mode control topology with slope-compensated peak current sensing through the MOSFET source. The integrated MOSFET's avalanche rating is published for unclamped inductive switching events, simplifying snubber design. Operating frequency is trimmed across the 60 kHz to 74 kHz band, allowing the designer to optimize transformer size versus switching loss. According to the manufacturer datasheet, fault protection covers over-temperature and over-voltage events, with thermal shutdown typically engaging above 150 °C junction.
Typical applications for the STR-W6072S include low-to-medium-power AC/DC adapters, auxiliary and standby supplies in white goods, set-top box power supplies, and small appliance SMPS modules up to roughly 50 W output. Its 800 V drain rating provides wide margin on 265 V AC rectified inputs where reflected voltage spikes can stress the primary switch.
When designing with the STR-W6072S, thermal management of the TO-220-5 tab is critical: the exposed metal tab is the primary heat path and must be soldered (or clipped) to a copper area on the PCB or to a small heatsink. Drain-voltage ringing under 265 V AC operation also demands an RCD snubber sized to the leakage inductance of the flyback transformer.
ドロップイン代替品: STR-W6072S — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
STR-W6053S
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STR-W6071S
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STR-W6073S
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STR-W6052S
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STR-W6072S 最大定格＆電気的特性
| トポロジー | Off-Line Flyback |
| Integrated MOSFET | Yes (built-in power switch) |
| ドレイン-ソース間降伏電圧 | 800 V |
| スイッチング周波数 | 60 kHz to 74 kHz |
| Control Mode | Current-mode PWM |
| Auto Standby / Burst Mode | Yes (PWM/burst auto-switching) |
| Fault Protection | Over Temperature, Over Voltage |
| Maximum Power Dissipation | 50 W (package-level, per source listing) |
| 動作温度範囲 | -20 °C to +115 °C |
| パッケージ | TO-220-5 (formed leads, TO-220F-6 equivalent) |
| 実装タイプ | Through Hole |
| Input Voltage (DC bus) | Universal rectified AC (range not specified in source) |
| Output Power Range (typical) | Up to ~50 W (depends on thermal design) |
| Series | STR-W6000S |
STR-W6072S ピン構成
| ピン 1 | DRAIN — MOSFET drain (high-voltage switching node, connected to transformer primary) |
| ピン 2 | SOURCE / GND — MOSFET source and control ground reference |
| ピン 3 | VCC (UVLO) — Supply voltage for the control IC and undervoltage-lockout sense |
| ピン 4 | OCP / FB — Over-current protection / feedback input from optocoupler |
| ピン 5 | AUTO-STANDBY / NC — Auto-standby setting or no-connect (per datasheet figure) |
主な用途
STR-W6072S の用途: 7 件s: White Goods Standby Power Supply, Set-Top Box and Consumer Electronics SMPS, Industrial Auxiliary Power Supply (24 V / 12 V), AC/DC Adapters up to 50 W, LED Lighting Driver Auxiliary Supply, Home Appliance Control Board Power, Universal-Input Battery Charger Sub-Supply.
White Goods Standby Power Supply
The STR-W6072S is a strong fit for universal-input standby rails in washing machines, refrigerators, and microwave ovens where energy-efficiency standby regulations (EU ErP / US ENERGY STAR) mandate < 300 mW idle power. Its built-in 800 V MOSFET handles the reflected voltage spikes generated by the small offline transformer when the rectified 325 V DC bus is suddenly loaded at power-on. The auto-standby burst-oscillation function drops the controller into low-frequency pulsing when the appliance is idle, while the integrated OVP and OTP shutdown paths protect the supply during line transients and thermal stress.
おすすめ
Set-Top Box and Consumer Electronics SMPS
In set-top boxes, soundbars, and similar always-on consumer electronics, the STR-W6072S drives a single-output flyback converter producing 5 V or 12 V from the universal AC mains. The 60-74 kHz switching frequency keeps transformer size small while avoiding audible noise in the converter, and the integrated current-mode controller eliminates up to a dozen discrete parts versus a typical UC3842-based design. Designers benefit from the auto-standby burst mode which keeps no-load consumption below modern standby requirements without extra optocoupler feedback bias.
おすすめ
Industrial Auxiliary Power Supply (24 V / 12 V)
The STR-W6072S serves as the primary-side controller in industrial 24 V or 12 V auxiliary SMPS modules that need universal AC input and a wide operating temperature window. Its -20 °C to +115 °C rating and integrated 800 V avalanche-rugged MOSFET withstand the harsher industrial environment (line surges, motor inrush, higher ambient temperature) better than discrete alternatives. Over-temperature and over-voltage fault protection shut the supply down during sustained overload, increasing field reliability and reducing warranty return rates.
おすすめ
AC/DC Adapters up to 50 W
Cost-optimized universal-input AC/DC adapters for toys, small appliances, and aftermarket chargers benefit from the STR-W6072S's fewest-external-parts topology. With current-mode PWM, built-in OVP/OTP, and an integrated 800 V switch, the design needs only a transformer, a few ceramic caps, a startup resistor, and an optocoupler feedback loop. The low standby power from the auto-standby burst mode is especially important for adapters plugged in 24/7, where traditional designs waste hundreds of milliwatts continuously.
おすすめ
LED Lighting Driver Auxiliary Supply
LED lighting fixtures often need a small auxiliary supply (5 V or 12 V) to power control circuitry, fans, or communication modules in addition to the main LED driver. The STR-W6072S provides an isolated, low-power auxiliary rail with high conversion efficiency on universal AC mains. The integrated 800 V MOSFET handles the inrush spikes from capacitive loads on the LED driver's input stage, while the built-in protections prevent catastrophic failure during surge events (1 kV or higher) common on commercial lighting installations.
おすすめ
Home Appliance Control Board Power
Microwave oven controllers, induction cooktop auxiliary supplies, and rice cooker microcontrollers all need an isolated low-voltage rail sourced from 230 V AC mains. The STR-W6072S targets exactly this use case with its 800 V MOSFET rating, built-in OVP/OTP, and ultra-low standby consumption. Designers can shrink the heatsink or eliminate it entirely thanks to the integrated switch, while the auto-standby burst mode keeps idle losses below 300 mW to support energy-rating labels.
おすすめ
Universal-Input Battery Charger Sub-Supply
In e-bike chargers, power-tool chargers, and small UPS modules, the STR-W6072S drives a small flyback converter that powers the charger's control and monitoring electronics. The integrated 800 V MOSFET and current-mode controller simplify isolation barriers and reduce ground-loop noise, while the auto-standby function keeps the charger compliant with EU standby regulations when the battery is full and the charger is left plugged in. Over-temperature shutdown is especially valuable in enclosed charger housings.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STR-W6072S — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STR-W6053S | STR-W6071S | STR-W6073S | STR-W6052S |
|---|---|---|---|---|---|
| Brand | Sanken | Sanken | Sanken | Sanken | Sanken |
| Package | TO-220-5 (formed leads) | TO-220-5 - same | TO-220-5 - same | TO-220-5 - same | TO-220-5 - same |
| Integrated MOSFET Breakdown | 800 V | 650 V (-19%) | 800 V (same) | 800 V (same) | 650 V (-19%) |
| Switching Frequency | 60-74 kHz | 60-74 kHz | 60-74 kHz | 60-74 kHz | 60-74 kHz |
| Control Topology | Current-mode PWM + burst standby | Current-mode PWM + burst standby | Current-mode PWM + burst standby | Current-mode PWM + burst standby | Current-mode PWM + burst standby |
| Output Power Class | Up to ~50 W | Up to ~40 W | Up to ~30 W | Up to ~60 W | Up to ~30 W |
| Fault Protection | OVP + OTP + OCP | OVP + OTP + OCP | OVP + OTP + OCP | OVP + OTP + OCP | OVP + OTP + OCP |
| Operating Temperature | -20 °C to +115 °C | -20 °C to +115 °C | -20 °C to +115 °C | -20 °C to +115 °C | -20 °C to +115 °C |
主な差別化要因
- Higher integrated MOSFET breakdown (800 V vs 650 V) （vs STR-W6053S)
- Wider output power range than STR-W6052S （vs STR-W6052S)
- Same TO-220-5 footprint across entire STR-W6000S family （vs Cross-brand AC/DC controllers (Power Integrations, onsemi))
設計ノート
The TO-220-5 (formed-lead) tab is the primary thermal path for the integrated MOSFET. At 50 W package dissipation, even with the tab soldered to 2 oz copper on a 100 x 100 mm board, junction temperatures can exceed 115 °C without forced airflow. Estimated: at 25 °C ambient and 1 oz copper of 200 mm², theta_JA is roughly 45 °C/W for the TO-220-5 package, so at 2 W dissipation the junction rises about 90 °C - pushing the limit of the -20 °C to +115 °C operating range. For continuous operation above 2 W, attach a clip-on heatsink or use the tab as a heat-spreader to a 1 oz copper pour of at least 6 square inches.
Place the STR-W6072S's VCC bypass capacitor (typically 10 µF) within 5 mm of the VCC pin to keep the UVLO comparator stable during startup and burst-mode transitions. The current-sense path through the MOSFET source pin must be a Kelvin connection: run the source-return trace directly to the current-sense resistor and avoid sharing it with the power ground. Estimate layout impact: routing the source-return trace 10 mm too long adds roughly 20 nH of parasitic inductance, which can cause a 2-3% error in cycle-by-cycle current limit at the 60-74 kHz switching rate.
Do not exceed 800 V on the drain during normal operation or 650 V during avalanche events - the avalanche energy rating of an integrated MOSFET in a TO-220-5 package is much lower than a discrete MOSFET's. Always add an RCD snubber sized for the worst-case leakage inductance of the flyback transformer, and verify that reflected voltage plus leakage spike stays below 700 V at maximum input voltage (264 V AC). A common mistake is using a transformer with too-high primary inductance, which raises drain ringing above the avalanche limit during 265 V AC transient testing.
Keep the high-voltage drain loop (transformer primary to MOSFET drain to transformer primary) area as small as practical to minimize radiated EMI. Place the Y-capacitor (between primary and secondary ground return) close to the transformer secondary to provide a return path for high-frequency common-mode currents. Estimated: shrinking the drain loop from 50 mm² to 15 mm² typically reduces conducted EMI by 6-8 dB at the fundamental switching frequency, often eliminating the need for an extra-stage EMI filter.
The auto-standby burst mode behavior depends on the FB-loop compensation network. If the optocoupler pull-up resistor is too small (< 4.7 kΩ), the controller may false-trigger burst mode during normal load steps, causing audible transformer noise and output voltage ripple. If the resistor is too large (> 22 kΩ), standby power consumption rises because the controller cannot enter burst mode reliably. The Sanken reference design uses 10 kΩ; validate in your specific design across no-load to full-load step responses.
コンプライアンス情報
Compliance status not explicitly stated in the verified web data. The TO-220-5 package is typically lead-free by modern industry convention, but RoHS / REACH declarations should be confirmed directly with Sanken before use in regulated end products.
