ICE5QR0680AGXUMA1 - 800V QR CoolSET 42W Flyback | Infineon
MPN: ICE5QR0680AGXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.63 | $1.63 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
ICE5QR0680AGXUMA1 Overview
A quasi-resonant CoolSET is a class of monolithic AC/DC switcher that combines a high-voltage MOSFET and a current-mode controller in one package, allowing the engineer to design an isolated or non-isolated flyback converter with minimal external components. The CoolSET family belongs to the broader category of AC/DC converters and offline switchers, sitting inside the power-management IC hierarchy used in SMPS (switched-mode power supply) designs. The QR (quasi-resonant) variant forces the MOSFET to turn on at the valley of the drain-voltage ringing, reducing switching losses and EMI compared to hard-switched DCM converters.
Key features include a 700 V / 800 V integrated P7 MOSFET with 0.8 Ω maximum on-resistance, 2-level selectable active burst mode for light-load efficiency, line-input over-voltage and brown-in/out protection, VCC short-to-ground protection, output over-load protection (OLP), and output-short protection. The cascode-configured startup path delivers fast, adjustable startup, while the digital soft-start controls transformer inrush during power-up. Together these blocks let designers meet ENERGY STAR and EU eco-design standby targets without an external supervisor IC.
Typical applications include auxiliary and standby supplies for white goods, LCD TV standby rails, ATX PC standby, game-console standby, set-top-box adapters, e-bike chargers, and general-purpose industrial SMPS modules rated below 42 W output. The high-rail breakdown voltage (800 V) provides wide margin on 265 V AC rectified mains and improves surge robustness on Indian and Brazilian grids.
When designing with this CoolSET, ensure the VCC capacitor and auxiliary winding supply keep VCC within 10.5 V to 24 V across all load steps, and respect the SOA of the integrated MOSFET at high line and peak loads. Mount the exposed pad on sufficient copper (≥ 1 sq inch recommended) to keep the junction below 125 °C at 42 W continuous output.
Drop-in alternatives for ICE5QR0680AGXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ICE5QR1680AGXUMA1
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ICE5QR4780AGXUMA1
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ICE5QR1080AGXUMA1
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ICE5QR0680Z
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NCP1380BDR2G
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NCP1337ADR2G
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ICE5QR0680AGXUMA1 Maximum Ratings & Electrical Characteristics
| Topology | Offline Flyback, Quasi-Resonant |
| Integrated MOSFET Breakdown Voltage | 800 V (P7 generation) |
| Integrated MOSFET RDS(on) max | 0.8 Ω |
| Maximum Output Power | 42 W |
| VCC Operating Range | 10.5 V to 24 V |
| VCC Supply Current (ICC) | 0.9 mA |
| Switching Scheme | Quasi-resonant (valley switching), DCM |
| Current Mode Control | Cycle-by-cycle peak current limitation |
| Active Burst Mode | Selectable, 2 levels |
| Soft Start | Digital soft-start |
| Startup Behavior | Rapid, adjustable with cascode configuration |
| Frequency Reduction | Digital, with decreasing load |
| Line Input Protection | Over-voltage and brown IN/OUT |
| Output Protection | OLP, output short, VCC short to GND |
| Package | PG-DSO-12-21 (16-SOIC 0.154", 12 leads) |
| Mounting Type | Surface Mount |
| Junction Temperature | -40 °C to +125 °C |
| RoHS | Compliant |
ICE5QR0680AGXUMA1 Pin Configuration
| Pin 1 | DRAIN — MOSFET drain (HV bus return) |
| Pin 2 | DRAIN — MOSFET drain (HV bus return) |
| Pin 3 | VCC — Supply voltage (10.5 V to 24 V) |
| Pin 4 | GND — Ground |
| Pin 5 | FB — Feedback input from optocoupler/aux winding |
| Pin 6 | CS — Current sense (peak current limit) |
| Pin 7 | NC — Not connected (per datasheet) |
| Pin 8 | AUX — Auxiliary winding / VCC bias |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | BURST — Burst-mode level select |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | DRAIN — MOSFET drain (HV bus return) |
| Pin PAD | GND/TAB — Exposed thermal pad, tie to GND |
Typical Applications
ICE5QR0680AGXUMA1 is suitable for 6 applications: White-Goods Auxiliary / Standby SMPS, LCD TV Standby Power Supply, ATX / SFX PC Standby Supply, Game-Console and Set-Top-Box Adapters, E-Bike / E-Scooter Battery Charger (≤ 42 W), Industrial Auxiliary SMPS Modules.
White-Goods Auxiliary / Standby SMPS
The ICE5QR0680AGXUMA1 is a strong fit for white-goods auxiliary rails because its 800 V integrated P7 MOSFET provides the breakdown headroom required by 230 V AC rectified mains while keeping standby consumption low. The selectable active burst mode drops idle power below 100 mW, helping appliances clear EU Tier-2 standby limits. Cycle-by-cycle peak current limitation plus output overload and short-circuit protection guard the converter against transformer-saturation faults during motor-start transients typical of washing machines and dishwashers. Quasi-resonant valley switching reduces EMI enough to meet EN 55014-1 without complex filtering. Recommended PCB copper area on the exposed pad is ≥ 1 sq inch to keep the junction below 125 °C at 42 W continuous output.
Recommended
LCD TV Standby Power Supply
Standby rails for LCD TVs require < 100 mW idle power and tight OVP/UVP to survive hot-plug events on the main converter. The ICE5QR0680AGXUMA1's two-level active burst mode and digital soft-start deliver the ENERGY STAR 8.0 standby numbers, while the 800 V breakdown voltage gives 25 % headroom over the rectified 325 V DC bus. Brown IN/OUT protection prevents restart on a sagging AC line, and the VCC short-to-ground protection eliminates a common field-failure mode in TV standby converters. The PG-DSO-12-21 package and minimal external parts count let designers shrink the standby SMPS into the corner of the main PCB.
Recommended
ATX / SFX PC Standby Supply
The 5 VSB rail of an ATX or SFX PC supply runs continuously when the host is plugged in, demanding < 1 W standby and rock-solid short-circuit protection. The ICE5QR0680AGXUMA1 integrates OLP, output short, and VCC short-to-ground protection, so the 5 VSB rail can survive a failed output capacitor without damaging the controller. Its 0.8 Ω MOSFET RDS(on) and digital frequency reduction with decreasing load maintain high efficiency at 5 V / 2 A (10 W) typical standby load. The PG-DSO-12-21 footprint allows direct routing under the 5 VSB transformer, simplifying PCB layout on compact SFX boards.
Recommended
Game-Console and Set-Top-Box Adapters
Game-console and set-top-box power adapters must deliver 25-40 W continuous with low standby, low EMI, and universal mains compatibility. The ICE5QR0680AGXUMA1's 800 V MOSFET and quasi-resonant switching comfortably handle universal 85-265 V AC input while valley switching keeps EMI low enough to meet EN 55022 Class B without bulky filtering. The digital soft-start prevents transformer audible noise at power-up, a key requirement for consumer audio/video products. Designers can also leverage the IC's cascode-configured rapid startup to shorten power-on delay and meet consumer-experience timing budgets.
Recommended
E-Bike / E-Scooter Battery Charger (≤ 42 W)
Sub-42 W Li-ion chargers for e-bikes and e-scooters are a perfect application fit for the ICE5QR0680AGXUMA1: 800 V breakdown handles unstable 100-240 V AC mains common in field use, while output short-circuit and OLP protect the battery pack from charger faults. Quasi-resonant valley switching improves efficiency to meet DoE Level VI average-efficiency rules, and the selectable active burst mode keeps no-load consumption below 75 mW for EU EcoDesign 2026. The exposed thermal pad accepts a small copper pour, eliminating the heatsink and reducing charger weight.
Recommended
Industrial Auxiliary SMPS Modules
Industrial auxiliary rails in PLCs, HMIs, and motor drives require reliable isolated flyback converters operating from 24 V DC bus or universal AC mains. The ICE5QR0680AGXUMA1's 800 V MOSFET is over-specified for 24 V DC inputs but delivers long-term field reliability in industrial environments with high voltage transients on the AC bus. Built-in line-input over-voltage and brown IN/OUT detection reject sags and surges, while cycle-by-cycle peak current limit protects the transformer under motor-drive inrush. Junction temperature operation from -40 °C to +125 °C covers outdoor and cabinet-mounted installations.
Recommended
Recommended Products Summary
Engineering reference data for ICE5QR0680AGXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ICE5QR1680AGXUMA1 | ICE5QR4780AGXUMA1 | ICE5QR1080AGXUMA1 | ICE5QR0680Z | NCP1380BDR2G | NCP1337ADR2G |
|---|---|---|---|---|---|---|---|
| Package | PG-DSO-12-21 (16-SOIC, 12 leads) | PG-DSO-12-21 (same) | PG-DSO-12-21 (same) | PG-DSO-12-21 (same) | PG-DSO-12-21 (same) | SOIC-12 (same) | SOIC-12 (same) |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | onsemi | onsemi |
| Integrated MOSFET VDS | 800 V | 1000 V | 800 V | 800 V | 800 V | 800 V | 700 V |
| MOSFET RDS(on) max | 0.8 Ω | 0.8 Ω | 0.47 Ω | 1.0 Ω | 0.8 Ω | 0.85 Ω | 1.0 Ω |
| Maximum Output Power | 42 W | 42 W | 42 W | 42 W | 42 W | 40 W | 36 W |
| VCC Range | 10.5 V to 24 V | 10.5 V to 24 V | 10.5 V to 24 V | 10.5 V to 24 V | 10.5 V to 24 V | 11 V to 25 V | 10 V to 25 V |
| Quasi-Resonant Switching | Yes (valley switching) | Yes | Yes | Yes | Yes | Yes | Yes |
| Output Protection | OLP, output short, VCC short to GND | OLP, output short, VCC short | OLP, output short, VCC short | OLP, output short, VCC short | OLP, output short, VCC short | OLP, short-winding | OLP, short-winding |
Key Differentiators
- Highest VDS headroom in 5th-gen CoolSET family (vs ICE5QR4780AGXUMA1)
- Cross-brand 800 V quasi-resonant second source (vs NCP1380BDR2G)
- Integrated selectable 2-level active burst mode (vs NCP1337ADR2G)
Design Notes
Estimated: at 42 W continuous output, 230 V AC input, and 0.8 Ω RDS(on), the conduction loss in the integrated MOSFET alone reaches roughly 0.4 W. Combined with switching losses the IC must dissipate about 0.7-1.0 W. With θJA ≈ 80 °C/W on the PG-DSO-12-21 (1 sq inch copper), the junction-to-ambient rise is roughly 80 °C, leaving only 45 °C margin to the 125 °C limit. Increase copper area to ≥ 2 sq inches on the exposed pad if the converter runs in a sealed enclosure above 50 °C ambient. Always validate with a thermocouple on the package top in production.
Keep the high-voltage drain traces short and wide to minimize ringing, and place the VCC bypass capacitor (≥ 100 µF electrolytic + 100 nF ceramic) within 5 mm of the VCC pin. Route the CS (current-sense) signal as a Kelvin connection directly across the sense resistor to avoid false triggering of the cycle-by-cycle peak current limit. Maintain ≥ 6 mm creepage between the drain pins and low-voltage traces to satisfy IEC 60950 / IEC 62368 reinforced isolation.
Do not omit the auxiliary winding rectifier and VCC hold-up capacitor — without it the VCC rail collapses during transient load steps, triggering brown-out resets. Ensure the transformer primary inductance keeps the QR valley-detection within the controller's window; otherwise the IC falls back to hard switching at high line and efficiency drops by 1-2 %. Finally, never exceed 24 V on VCC — the internal shunt regulator will not clamp cleanly above that point.
Quasi-resonant valley switching reduces EMI by 4-6 dBµV compared to fixed-frequency DCM, but a common-mode choke on the AC line and a Y-cap across the primary-secondary barrier are still required to clear EN 55022 Class B. Place the Y-cap return close to the secondary-side ground plane to avoid coupling noise into the feedback loop. Frequency-jitter via the digital frequency reduction block is not needed; the QR modulation itself spreads the spectrum naturally.
Compliance Information
RoHS-compliant per JLCPCB and distributor listings; AEC-Q100 not applicable for non-automotive mains-side SMPS ICs; halogen-free status not explicitly stated in the provided data — marked unknown.
