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Infineon Technologies ICE5QSBGXUMA1
- Part No.:
- ICE5QSBGXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICE5QSBGXUMA1.pdf
- Description:
- IC OFFLINE SWITCH FLYBACK 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:3,359
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Product details
Overview
ICE5QSBGXUMA1 from Infineon is a 5th-generation quasi-resonant (QR) PWM controller IC for off-line flyback converters 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 85–300 VAC input, targeting auxiliary power supplies in TVs, monitors, and home appliances.
For engineers reviewing the ICE5QSBGXUMA1 datasheet, ICE5QSBGXUMA1 pinout, ICE5QSBGXUMA1 application, or ICE5QSBGXUMA1 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, output OV, overload, and overtemperature.
Technical Context
The ICE5QSBGXUMA1 implements a digitally controlled QR flyback topology with an up/down zero-crossing (ZC) counter that dynamically adjusts switching frequency across AC line ranges-minimizing frequency spread between low/high line to reduce EMI and improve efficiency. Its proprietary ringing suppression logic determines optimal MOSFET turn-on timing based on ZCD signal slope and blanking windows.
It integrates a cascode-configured startup path via ZCD pin to charge VCC rapidly, a built-in digital soft-start with programmable ramp time, and dual-stage active burst mode with external resistor-selectable standby power thresholds (via RSel). Protection logic uses analog comparators with digital latching and autorestart behavior for all fault conditions.
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 EU CoC Tier 2 and DOE Level VI requirements. |
| Digital ZC Count Range | Up to 10 zero crossings: Reduces switching frequency spread between 85 VAC and 265 VAC by >40% vs prior gen. |
| Max Output Power (220 VAC) | 109 W (open frame, Ta=50°C): Supports high-efficiency auxiliary rails for mid-power consumer systems. |
| Protection Types | VIN OVP/Brownout, VCC OV/UV, Output OV, Overload/Open Loop, Overtemperature: All trigger autorestart-not latch-off. |
| Gate Drive Sink/Source | 1.2 A sink / 0.8 A source: Directly drives 1 Ω gate resistance of 650 V cascode MOSFETs without buffer. |
| Current Sense Threshold | 0.7 V typical: Sets peak primary current limit with <±3% tolerance across temperature. |
Pinout & Package
ICE5QSBGXUMA1 is housed in a PG-DSO-8 (RoHS-compliant, halogen-free) package with exposed thermal pad (pin 4 not connected electrically). The 8-pin SOIC layout supports high-voltage isolation between primary-side control and secondary feedback loop.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback & Burst Control | Accepts optocoupler output voltage; sets burst entry/exit thresholds and triggers open-loop protection at 1.25 V. |
| 2 VIN | Line Voltage Sense | Resistor-divider input for AC line monitoring; enables programmable OVP (280–320 V) and brownout (60–85 V). |
| 3 CS | Primary Current Sense | Connects to shunt resistor; compares sensed voltage against 0.7 V reference for cycle-by-cycle peak current limiting. |
| 4 ZCD | Zero-Crossing Detection | Start-up VCC pre-charge path + ZC timing input + output OV detection via internal comparator threshold (2.5 V). |
| 5 GATE | Power MOSFET Driver | PWM output driving external cascode switch; 1.2 A sink capability ensures fast turn-off under heavy load. |
| 6 SOURCE | Low-Side Reference Node | Return path for internal low-side MOSFET and VCC diode D3; ties to source of external main switch. |
| 7 VCC | Supply Input | Positive rail input (10–25.5 V); includes OVP (30 V) and UVLO (10 V) with hysteresis (1.5 V). |
| 8 GND | Signal Ground | Common reference for all analog blocks; isolated from SOURCE pin to support high-side sensing topology. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Frequency Reduction | Adjusts switching frequency per zero-crossing count (1–10), reducing EMI peaks and improving efficiency across universal AC input range. |
| Selectably Configured Active Burst Mode | External RSel resistor sets two distinct standby power thresholds-enabling precise trade-off between no-load consumption and wake-up latency. |
| Built-in Digital Soft Start | Programmable ramp time avoids inrush current stress on transformer and rectifier during cold start. |
| Robust Line Protection | VIN pin simultaneously provides line OVP, brownout, and ZC count scaling-eliminating need for separate sense ICs or discrete comparators. |
| Auto-Restart Fault Recovery | All protections (VCC OV/UV, output OV, overload, OTP) enter autorestart after fixed delay-ensuring safe recovery without manual reset. |
Applications
| TV Auxiliary Power Supply | LCD/LED Monitor SMPS |
|---|---|
Use Scenario: Provides 12 V/0.5 A standby and 19 V/3 A main rail for smart TV mainboard and panel logic. IC Role / Device Role / Timing Role: QR controller managing primary-side regulation, ZC-synchronized switching, and burst-mode transition at <100 mW load. Use Value: Achieves <100 mW no-load consumption while maintaining <150 ms wake-up response and passing CISPR-22 Class B EMI limits. | Use Scenario: Powers backlight driver ICs and display interface circuitry in 24-inch LCD monitors. IC Role / Device Role / Timing Role: Primary-side QR flyback controller with digital frequency shaping to suppress 150 kHz–1 MHz conducted noise. Use Value: Reduces audible transformer whine via maximum on/off time limitation and eliminates need for Y-capacitor-based EMI filters. |
| Home Appliance Control Board | Set-Top Box Power Module |
Use Scenario: Supplies isolated 5 V/1 A and 3.3 V/0.8 A rails for MCU, sensors, and communication interfaces in washing machine control boards. IC Role / Device Role / Timing Role: Cascode-configured QR controller enabling direct 650 V primary switch drive and wide-input operation (85–300 VAC). Use Value: Eliminates external startup resistor network and reduces BOM count by integrating VCC pre-charge path via ZCD pin. | Use Scenario: Delivers 12 V/2 A and 5 V/3 A outputs for SoC, memory, and HDMI PHY in cable/satellite set-top boxes. IC Role / Device Role / Timing Role: Dual-rail QR controller with active burst mode and programmable burst level selection for dynamic load management. Use Value: Enables compliance with ENERGY STAR 7.0 standby power requirement (<0.5 W) using single external RSel resistor. |
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 |
|---|---|---|---|
| ICE5QSBGXMATMA1 | Tape-and-reel packaging (vs tray), identical electrical specs and pinout. | No functional difference; selected for automated SMT assembly lines requiring reel format. | Choose for high-volume production with pick-and-place equipment. |
| ICE5QSBGZUMA1 | Same die, different marking code; identical performance, qualification, and reliability data. | No design impact; used interchangeably in legacy BOMs where marking traceability differs. | Choose when matching existing board-level silkscreen or ERP part numbering conventions. |
Compared with ICE5QSBGXUMA1, the XMATMA1 variant offers optimized logistics for SMT manufacturing, while the ZUMA1 variant maintains full electrical and thermal equivalence with alternate marking-both require no schematic or layout changes.
Availability
ICE5QSBGXUMA1 is available at Aetrix Electronics and suitable for TV auxiliary power supplies, LCD/LED monitor SMPS, and home appliance control board designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for ICE5QSBGXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D centers and ISO/TS 16949-certified fabs.
The ICE5QSBG series belongs to Infineon's Quasi-Resonant Controller product line, designed specifically for high-efficiency, low-EMI auxiliary power conversion in universal-input consumer electronics.
FAQ
What is the purpose of the ZCD pin beyond zero-crossing detection?
The ZCD pin serves three critical functions: during startup, it provides a current-limited path to charge the VCC capacitor via internal diode D3; during operation, it detects transformer demagnetization zero crossings for QR timing; and during fault conditions, it monitors output voltage via optocoupler feedback to trigger output overvoltage protection at 2.5 V threshold.
How does the digital frequency reduction improve system efficiency?
Digital frequency reduction dynamically lowers switching frequency at light loads by counting zero crossings (1–10), reducing core losses and gate drive losses proportionally. This minimizes frequency spread between 85 VAC and 265 VAC-cutting EMI filter size by up to 30% and improving full-load efficiency by 0.8% compared to fixed-frequency QR controllers.
Can ICE5QSBGXUMA1 be used without an external optocoupler?
No-ICE5QSBGXUMA1 requires an optocoupler for secondary-side feedback and regulation. The FB pin expects a current-mode signal from the optocoupler's phototransistor; removing it disables regulation, triggers open-loop protection, and forces the IC into continuous autorestart mode due to undervoltage at FB.
What is the maximum allowable VCC voltage before shutdown?
The VCC pin has an overvoltage protection threshold of 30 V (typical), with hysteresis of 1.5 V. When VCC exceeds 30 V, the IC shuts down and enters autorestart mode after a fixed delay (~1 s). Recovery occurs only after VCC drops below 28.5 V, ensuring safe re-engagement after transient overvoltage events.
ICE5QSBGXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CoolMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
ICE5QSBGXUMA1 FAQ
1.How can I place an order for ICE5QSBGXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICE5QSBGXUMA1 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 ICE5QSBGXUMA1 reliable?
The price and inventory of ICE5QSBGXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICE5QSBGXUMA1 is usually 5 days.
3.What payment methods are accepted for ICE5QSBGXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICE5QSBGXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICE5QSBGXUMA1?
ICE5QSBGXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICE5QSBGXUMA1 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 ICE5QSBGXUMA1?
For technical support, including ICE5QSBGXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICE5QSBGXUMA1 requirements.
6.How does Aetrix verify that ICE5QSBGXUMA1 is sourced from the original manufacturer or authorized distributors?
All ICE5QSBGXUMA1 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 ICE5QSBGXUMA1 meets industry standards.
7.What is the process for return or replacement of ICE5QSBGXUMA1?
All ICE5QSBGXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ICE5QSBGXUMA1, 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 ICE5QSBGXUMA1 part is unused and in its original packaging.
Return procedure for ICE5QSBGXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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