STR-W6072S - 72W Off-Line PWM Controller w/ MOSFET | Sanken
Référence : STRW6072S ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.55 | $25,50 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1 000 | $1.65 | $1 650,00 |
STRW6072S Présentation
A switching power supply controller (also called an AC-DC converter IC or PWM controller IC) is a semiconductor that regulates output voltage in a switch-mode power supply (SMPS) by modulating the duty cycle of an internal or external power switch at high frequency. The STR-W6072S belongs to the AC-DC converter sub-category of power management ICs (PMICs), sitting inside a flyback converter topology that is the dominant architecture for sub-100 W isolated supplies such as appliance adapters, set-top box wall warts, and standby rails for white goods. Within the device, a current-mode PWM controller IC is co-packaged with a power MOSFET, eliminating the drive loop between separate controller and MOSFET components.
Key features include integrated avalanche-rated 650 V MOSFET, automatic standby/burst-mode operation for sub-100 mW standby power, built-in soft-start, over-current protection (OCP) with auto-restart, over-voltage protection (OVP), thermal shutdown, and an under-voltage lockout (UVLO) on the VCC pin. The auxiliary winding feedback topology sets output voltage indirectly via the VCC supply, removing the need for an opto-isolator and TL431 in low-cost designs.
The internal architecture uses a current-mode PWM control loop with leading-edge blanking, slope compensation, and a built-in oscillator. The Sanken STR-W6000S series is positioned as a cost-performance optimized family for digital TV, monitor, and appliance standby power, where the controller integrates the high-voltage startup circuit and eliminates external bias components. Compared to a discrete UC3842 + MOSFET implementation, the STR-W6072S achieves a much smaller PCB footprint and lower standby power, at the expense of peak output power ceiling.
Typical applications include AC-DC adapters up to 72 W, auxiliary/standby supplies for white goods and industrial equipment, digital TV and monitor main power supplies, set-top box power bricks, and low-cost isolated DC-DC converters. Designers typically use it in quasi-resonant or hard-switched flyback configurations with a simple single-winding auxiliary feedback.
When designing with the STR-W6072S, ensure the VCC auxiliary winding is wound to deliver 15 V to 20 V at nominal load so that VCC stays within the 8.5 V to 18 V operating range. Verify that peak drain current does not exceed the integrated MOSFET rating, and add a Y-capacitor and adequate common-mode choke on the input for EMI suppression to meet EN55022 Class B.
This page synthesizes Sanken's official datasheet, current distributor pricing, verified drop-in alternatives in the same TO-220F footprint, and practical flyback design notes that are not collected in the equivalent value of a single product listing.
Alternatives de remplacement direct pour STRW6072S — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
STR-W6052S
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STR-W6065S
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STR-W6077S
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STR-A6051H
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STR-W6000S series member
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STRW6072S Valeurs maximales et caractéristiques électriques
| Topologie | Flyback, Off-Line |
| Control Mode | Current-Mode PWM |
| Fréquence de commutation | 60 kHz to 74 kHz |
| Integrated MOSFET Breakdown Voltage | 650 V |
| Approximate Output Power | 72 W |
| VCC Operating Range | 8.5 V to 18 V |
| Standby Function | Auto standby / burst oscillation |
| Démarrage progressif | Built-in |
| Over-Current Protection | Auto-restart |
| Over-Voltage Protection | Built-in |
| Arrêt thermique | Built-in |
| Under-Voltage Lockout | Yes (VCC) |
| Boîtier | TO-220F-5 (formed leads) |
| Température de fonctionnement | -40C to +125C |
| Type de montage | Through-Hole |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de STRW6072S
| Broche 1 | OCP/FB — Over-current protection / feedback input |
| Broche 2 | VCC — Supply voltage for control circuit (8.5 V to 18 V) |
| Broche 3 | GND — Ground |
| Broche 4 | NC — Not connected (per datasheet) |
| Broche 5 | DRAIN — Internal MOSFET drain (connected to tab) |
Zone de fonctionnement sûr - Integrated MOSFET
Applications typiques
STRW6072S convient pour 6 applications: AC-DC Wall Adapter up to 72 W, Digital TV and Monitor Main Power Supply, White Goods Auxiliary / Standby Power Supply, Set-Top Box and Streaming Device Power Brick, Industrial Auxiliary Power Supply, LED Lighting Driver Supply.
AC-DC Wall Adapter up to 72 W
The STR-W6072S's 72 W output rating and integrated 650 V MOSFET make it a fit for universal-input (85-265 VAC) flyback adapters up to that power level, common in laptop replacement chargers, monitor bricks, and small appliance supplies. The integrated MOSFET eliminates the drive loop and high-voltage startup components of a discrete UC3842 design, shrinking the PCB and lowering BOM cost. Its 60-74 kHz switching frequency keeps the converter above the AM band while keeping switching losses manageable; auto burst-mode standby drops no-load consumption below 100 mW for ErP Lot 6 compliance. Designers place it at the primary side with a single auxiliary 15-20 V winding for VCC, eliminating the opto-coupler in low-cost primary-side regulation topologies.
Recommandé
Digital TV and Monitor Main Power Supply
The STR-W6072S is a mainstream choice for the main power supply board of LCD/LED TVs and computer monitors in the 40-72 W range, where its TO-220F footprint has been used across Samsung, LG, and Panasonic TV models from 2005-2012 according to industry service notes. The integrated MOSFET handles the universal-input flyback stress while the auto-standby function keeps the standby rail under 0.5 W to meet EU energy regulations. The 650 V avalanche-rated MOSFET provides adequate margin for 400 VDC PFC bus transients. Designers benefit from a small BOM count - typically a snubber, VCC diode, sense resistor, and the auxiliary winding - enabling compact power-supply modules behind the display panel.
Recommandé
White Goods Auxiliary / Standby Power Supply
For washing machines, refrigerators, dishwashers, and air conditioners, the STR-W6072S delivers a cost-optimized auxiliary standby rail that powers the control MCU, display, and relays. The integrated MOSFET and auto-burst standby keep standby power below 100 mW, critical for appliances that remain plugged in continuously. The wide VCC range (8.5-18 V) accommodates the auxiliary-winding voltage variation across universal-input line and load conditions, eliminating the need for a separate LDO for the MCU supply. The TO-220F-5 isolated tab allows direct heatsink mounting on the appliance chassis without insulating hardware, simplifying the mechanical design.
Recommandé
Set-Top Box and Streaming Device Power Brick
Set-top boxes, streaming sticks, and small networking appliances commonly require 12-36 W flyback supplies, and the STR-W6072S is widely used in the higher-power members of that family. Its 60-74 kHz frequency is high enough to keep the transformer compact while avoiding audible noise in the ferrite core. The integrated OCP and OVP with auto-restart protect downstream SoCs and HDMI interfaces from fault conditions. Designers can use a 3-winding transformer (primary, secondary, VCC auxiliary) with a TL431 + opto feedback loop for tight output regulation, or skip the opto for the lowest-cost designs using primary-side regulation through the VCC winding.
Recommandé
Industrial Auxiliary Power Supply
In industrial PLCs, motor drives, and control panels, the STR-W6072S provides an isolated auxiliary 5 V, 12 V, or 24 V supply for powering control logic, relays, and sensors alongside the main 24 V or 48 V bus. The integrated MOSFET's 650 V breakdown handles 400 V rectified industrial DC bus transients, while the wide operating temperature range (-40C to +125C) suits cabinet-mounted applications. The auto-restart OCP lets the converter recover from a sustained overload without service intervention, important in unmanned industrial cabinets. The TO-220F package provides sufficient thermal headroom at the typical 15-30 W auxiliary loads found in industrial systems.
Recommandé
LED Lighting Driver Supply
For LED luminaires requiring isolated 24-48 V LED-driver supplies in the 30-72 W range, the STR-W6072S serves as the primary-side flyback controller in constant-voltage LED drivers. The integrated 650 V MOSFET handles universal input, and the auto-burst standby function reduces standby losses for lighting fixtures with standby connectivity (smart LEDs). The fixed-frequency operation simplifies EMI filter design for compliance with EN55015 Class B. Designers pair it with a downstream buck or buck-boost constant-current controller on the secondary side to deliver the LED current regulation while the STR-W6072S handles the isolated voltage conversion.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STRW6072S — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STR-W6052S | STR-W6065S | STR-W6077S | STR-A6051H | STR-W6080S |
|---|---|---|---|---|---|---|
| Package | TO-220F-5 (formed leads) | TO-220F-5 - same | TO-220F-5 - same | TO-220F-5 - same | TO-220F-5 - same | TO-220F-5 - same |
| Brand | Sanken | Sanken | Sanken | Sanken | Sanken | Sanken |
| Approximate Output Power | 72 W | ~52 W | ~65 W | ~77 W | ~51 W | ~80 W |
| MOSFET Breakdown Voltage | 650 V | 650 V | 650 V | 650 V | 650 V | 650 V |
| Switching Frequency | 60 kHz to 74 kHz | 60-74 kHz | 60-74 kHz | 60-74 kHz | 60-74 kHz | 60-74 kHz |
| Auto Standby / Burst Mode | Yes | Yes | Yes | Yes | Yes | Yes |
| OCP / OVP | Both built-in, auto-restart | Both built-in | Both built-in | Both built-in | Both built-in | Both built-in |
| Pinout Drop-In Compatibility | Reference | Drop-in | Drop-in | Drop-in | Verify (slight pin function mapping) | Drop-in |
Principaux différenciateurs
- Higher output power than STR-W6065S in identical TO-220F-5 footprint (vs STR-W6065S)
- Lower standby power than discrete UC3842 + MOSFET designs (vs UC3842 + discrete 8N60 MOSFET)
- TO-220F isolated tab eliminates insulator washer (vs STR-W6077S (same family, ~77 W))
Notes de conception
The TO-220F-5 fully-molded package provides 1500 VAC isolation between the integrated MOSFET drain and the heatsink surface, so the tab can be mounted directly to a grounded chassis or heatsink without an insulating mica washer. Estimated: at 72 W output from a 230 VAC input with 92% efficiency, internal dissipation is approximately 6.3 W; with theta-JA around 40 C/W for the TO-220F package on a 100 cm^2 copper pad, the junction rises ~250 C above ambient, requiring a modest clip-on heatsink to keep Tj below 125 C at 60 C ambient. Reduce the converter's output power by 30% (to about 50 W) for fan-less operation without a heatsink.
Route the high-voltage drain trace on the bottom layer or shield it with a grounded copper pour to minimize radiated EMI. Keep the sense resistor (OCP/FB pin 1) within 5 mm of the IC and away from the drain trace to avoid capacitive coupling that would distort current sensing. The VCC pin decoupling capacitor (typically 47 uF to 100 uF electrolytic in parallel with 100 nF ceramic) must be placed within 10 mm of pin 2 - this capacitor supplies the gate-drive current during MOSFET turn-on and undersized capacitance causes restart oscillation.
Do not confuse the TO-220F-5 (plastic, isolated) with the metal-tab TO-220-5; the metal-tab version is NOT pin-compatible and will short the drain to the chassis. Per the Sanken datasheet, the VCC auxiliary winding must deliver 15 V to 20 V under all line and load conditions - if VCC drops below the UVLO threshold (~8.5 V) at full load, the controller will restart-cycle audibly and overheat. Always include a primary-side RCD snubber sized for the worst-case drain voltage spike at 265 VAC full load.
Informations de conformité
RoHS and REACH compliant per Sanken product page; AEC-Q100 not applicable (industrial/consumer AC-DC controller).
