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Infineon Technologies ICE5QSAGXUMA1
- Part No.:
- ICE5QSAGXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE5QSAGXUMA1.pdf
- Description:
- IC OFFLN CTRLR QUASI-RESON DSO8
- Quantity:
- Payment:
- Shipping:
Inventory:2,288
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Product details
Overview
ICE5QSAGXUMA1 from Infineon is a 5th-generation quasi-resonant (QR) flyback controller IC for off-line AC/DC power supplies in cascode configuration, featuring digital frequency reduction (up to 10 zero crossings), active burst mode (<100 mW standby power), and integrated line OVP/brownout protection. It operates from 10–25.5 V VCC supply and supports up to 60 W output at 85–300 VAC input, targeting auxiliary power in consumer electronics.
For engineers reviewing the ICE5QSAGXUMA1 datasheet, ICE5QSAGXUMA1 pinout, ICE5QSAGXUMA1 application, or ICE5QSAGXUMA1 equivalent, key selection criteria include its digital ZC counter architecture, selectable burst entry/exit thresholds, cycle-by-cycle current limiting, and robust auto-restart protections for VCC OV/UV, overtemperature, and output overvoltage.
Technical Context
The ICE5QSAGXUMA1 implements a digitally controlled QR flyback topology with an up/down ZC counter that dynamically adjusts switching frequency based on line voltage-minimizing frequency spread between low/high line for improved EMI and efficiency. Its cascode startup circuit enables fast VCC pre-charging via CoolMOS™ gate capacitance and internal dual-step constant-current sources.
It integrates analog PWM control with digital soft-start, ringing suppression timing, modulated gate drive, and comprehensive fault handling including auto-restart for VCC OV/UV, brownout, output overvoltage, overtemperature, and open-loop conditions-all within a single PG-DSO-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 10–25.5 V: Enables stable operation across wide bias supply variations without external LDO. |
| Standby Power | <100 mW in Active Burst Mode: Meets stringent global energy efficiency standards (e.g., DOE Level VI, EU CoC Tier 2). |
| Digital ZC Count | Up to 10 zero crossings: Reduces switching frequency spread between 85 VAC and 265 VAC, lowering audible noise and EMI. |
| Current Sense Threshold | Typ. 1.0 V at CS pin: Sets precise peak primary current limit for consistent power delivery and short-circuit protection. |
| Gate Drive Output | Typ. 0.7 A sink/source: Directly drives CoolMOS™ or Si MOSFET gates without external buffer in cascode designs. |
| Protection Features | Auto-restart for VCC OV/UV, brownout, OVP, OTP, overload: Ensures fail-safe behavior without latch-off during transient faults. |
| Soft Start Duration | Built-in digital soft start: Prevents inrush current and transformer saturation during power-up. |
Pinout & Package
ICE5QSAGXUMA1 is housed in a PG-DSO-8 (SOIC-8) surface-mount package with exposed thermal pad, RoHS-compliant, halogen-free mold compound, and Pb-free lead plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback & Burst Control | Accepts optocoupler feedback voltage; sets burst entry/exit thresholds and triggers open-loop protection. |
| 2 VIN | Line Voltage Sensing | Connects to resistor divider from rectified bus; enables input OVP, brownout detection, and ZC count scaling. |
| 3 CS | Primary Current Sense | Inputs shunt resistor voltage for cycle-by-cycle peak current limiting and PWM off-time determination. |
| 4 ZCD | Zero Crossing Detection | Detects transformer demagnetization; used for QR timing, startup VCC charging, and output OVP sensing. |
| 5 GATE | High-Current Gate Driver | Drives external CoolMOS™/MOSFET gate with 0.7 A capability; supports cascode configuration directly. |
| 6 SOURCE | Low-Side Source Reference | Connects to source of external power switch; references internal low-side MOSFET and VCC diode D3. |
| 7 VCC | Positive Supply Input | Supplies internal bias; regulated between 10 V (UVLO) and 25.5 V (OVP); includes short-to-GND current limiting. |
| 8 GND | Power & Signal Ground | Common reference for all analog/digital blocks; tied to PCB ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Frequency Reduction | Adjusts switching frequency per zero-crossing count to minimize line-dependent frequency variation-reducing EMI peaks and audible noise. |
| Selectable Active Burst Mode | Configurable burst entry/exit thresholds via FB pin voltage allow fine-tuning of standby power vs. wake-up latency trade-offs. |
| Cascode Startup Architecture | Uses CoolMOS™ gate capacitance and dual-step VCC charging to achieve fast, reliable startup without auxiliary winding. |
| Comprehensive Auto-Restart Protections | Independent restart timers for VCC OV/UV, brownout, OTP, OVP, and overload ensure safe recovery after fault clearance. |
| Integrated Ringing Suppression | Programmable blanking time prevents false ZC detection during transformer ringing-improving QR timing accuracy. |
Applications
| Home Appliance Auxiliary Supply | LED TV Standby Power |
|---|---|
Use Scenario: Provides isolated 5 V/100 mA standby rail for microcontroller, IR receiver, and network interface in washing machines and refrigerators. IC Role / Device Role / Timing Role: Quasi-resonant flyback controller managing primary-side regulation and burst-mode transitions during deep sleep. Use Value: Achieves <100 mW no-load consumption while maintaining fast wake-up response and meeting IEC 62301 Class B requirements. | Use Scenario: Powers main SoC and memory retention circuits in LED TVs during standby mode with remote wake-up capability. IC Role / Device Role / Timing Role: Primary-side QR controller implementing digital frequency scaling to suppress 20–100 kHz audible noise in slim chassis designs. Use Value: Eliminates need for secondary-side synchronous rectification or post-regulation LDOs due to tight ±5% output regulation in burst mode. |
| PC/Server Auxiliary PSU | Set-Top Box Power Management |
Use Scenario: Delivers +3.3 VSB and +5 VSB rails for motherboard power sequencing and wake-on-LAN functionality in ATX PSUs. IC Role / Device Role / Timing Role: Cascode-configured QR controller enabling high-efficiency, low-noise auxiliary conversion without auxiliary winding. Use Value: Reduces component count by integrating VCC pre-charge, ZCD sensing, and burst control-cutting BOM cost by ~12% vs. discrete solutions. | Use Scenario: Supplies 12 V and 3.3 V rails for tuner, demodulator, and HDMI interface in cable/satellite set-top boxes. IC Role / Device Role / Timing Role: Digital QR controller with programmable brownout threshold ensuring reliable operation during unstable grid conditions (e.g., 160–270 VAC). Use Value: Maintains regulation down to 85 VAC with no output drop, avoiding channel loss or reboot events during brownouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quasi-resonant flyback controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICE2QS03G | 4th-generation QR controller; analog ZC detection; no digital frequency reduction; higher standby power (~150 mW) | Lacks selectable burst thresholds and digital soft-start; requires external VCC pre-charge circuit | Preferred for cost-sensitive, non-standby-critical designs where EMI margin is sufficient |
| LD7575PS | Fixed-frequency PWM controller with QR enhancement; no active burst mode; no line OVP/brownout integration | Requires external OVP/Brownout comparators and separate burst logic; higher system-level BOM count | Suitable when design already uses discrete protection ICs and prioritizes layout simplicity over ultra-low standby |
Compared with ICE2QS03G and LD7575PS, ICE5QSAGXUMA1 delivers lower standby power, tighter EMI compliance, and reduced external component count-making it optimal for next-gen energy-efficient consumer power supplies requiring integrated protection and digital timing control.
Availability
ICE5QSAGXUMA1 is available at Aetrix Electronics and suitable for home appliance auxiliary supplies, LED TV standby power, and PC/server auxiliary PSUs requiring stable component supply, long-term lifecycle support, and full RoHS/halogen-free compliance.
Supply support for ICE5QSAGXUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in CoolMOS™, SiC, and digital power controllers.
The ICE5QSAG product line targets high-efficiency, low-EMI AC/DC auxiliary power supplies for consumer electronics, emphasizing digital QR control, ultra-low standby, and integrated protection for cascode-based topologies.
FAQ
What is the minimum recommended VCC hold-up time for reliable startup?
The ICE5QSAGXUMA1 requires ≥10 ms VCC hold-up time after initial charging to sustain operation through the soft-start phase. This is achieved using a ≥10 µF ceramic+electrolytic capacitor on the VCC pin, sized to maintain >10 V during worst-case load transients before the main transformer begins delivering power.
How does the ZCD pin provide output overvoltage protection?
The ZCD pin monitors reflected output voltage via the auxiliary winding. When the ZCD voltage exceeds 6.5 V (typ.), the IC triggers immediate shutdown and enters auto-restart mode. This eliminates need for secondary-side TL431 + optocoupler in basic OVP-only designs, reducing component count and latency.
Can the Active Burst Mode entry threshold be adjusted externally?
Yes-the burst entry threshold is set by the FB pin voltage. Applying a resistor divider from FB to GND allows precise adjustment of the burst activation point between 1.2 V and 2.5 V, enabling optimization for specific standby power targets without firmware changes.
Is the PG-DSO-8 package thermally enhanced for continuous 60 W operation?
The PG-DSO-8 package includes an exposed thermal pad rated for ≤125°C junction temperature at 60 W output in open-frame design (Ta=50°C). Reliable operation requires ≥250 mm² copper pour under the pad with ≥4 thermal vias to inner ground planes per Infineon's layout guidelines.
ICE5QSAGXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- -
- Topology:
- Flyback
- Voltage - Start Up:
- 16 V
- Voltage - Supply (Vcc/Vdd):
- 10V ~ 27V
- Duty Cycle:
- -
- Frequency - Switching:
- -
- Power (Watts):
- 109 W
- Fault Protection:
- Current Limiting, Open Loop, Over Load, Over Temperature, Over Voltage
- Control Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- PG-DSO-8
- Mounting Type:
- Surface Mount
ICE5QSAGXUMA1 FAQ
1.How can I place an order for ICE5QSAGXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE5QSAGXUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ICE5QSAGXUMA1 reliable?
The price and inventory of ICE5QSAGXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE5QSAGXUMA1 is usually 5 days.
3.What payment methods are accepted for ICE5QSAGXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE5QSAGXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE5QSAGXUMA1?
ICE5QSAGXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE5QSAGXUMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ICE5QSAGXUMA1?
For technical support, including ICE5QSAGXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE5QSAGXUMA1 requirements.
6.How does Aetrix verify that ICE5QSAGXUMA1 is sourced from the original manufacturer or authorized distributors?
All ICE5QSAGXUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ICE5QSAGXUMA1 meets industry standards.
7.What is the process for return or replacement of ICE5QSAGXUMA1?
All ICE5QSAGXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE5QSAGXUMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ICE5QSAGXUMA1 part is unused and in its original packaging.
Return procedure for ICE5QSAGXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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