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Infineon Technologies CYPAP111A3-10SXQ
- Part No.:
- CYPAP111A3-10SXQ
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
CYPAP111A3-10SXQ.pdf
- Description:
- PRIMARY SIDE STARTUP CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:4,850
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Product details
Overview
CYPAP111A3-10SXQ from Infineon is a primary-side startup controller for secondary-controlled AC/DC flyback adapters, supporting universal 85–265 VAC input, integrated 7.5 V LDO, low-side gate driver (GD), and Pulse Edge Transformer (PET) synchronization interface. It enables X-cap discharge mode, provides line UVP/OVP, OCP, and auxiliary winding OVP, and targets USB PD mobile power adapters.
For engineers reviewing the CYPAP111A3-10SXQ datasheet, CYPAP111A3-10SXQ pinout, CYPAP111A3-10SXQ application, or CYPAP111A3-10SXQ equivalent, key selection considerations include soft-start capacitor timing (SS pin), RT-resistor-set oscillator frequency (~30 kHz), PET-based secondary sync capability, VDD700 high-voltage start-up (≤500 V), and AUX_IN switchover for post-startup operation.
Technical Context
The CYPAP111A3-10SXQ implements a fixed-frequency, free-running oscillator (30 kHz) during soft-start and transitions to PET-synchronized PWM control once secondary regulation is established. Its dual-power architecture switches from VDD700 (≤500 V, high-voltage start-up) to AUX_IN (≤22 V, auxiliary winding supply) after initial power transfer.
Protection logic includes line undervoltage/overvoltage detection on VDD700, overcurrent sensing via CS pin with 1.2 V threshold, auxiliary winding OVP on OVP_AUX with resistor-divider scaling, and programmable soft-start ramp (5 µA current source, 3.75 V max). Fault recovery uses a fixed auto-restart timer (TAR).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 85–265 VAC universal mains; supports direct AC-line connection for X-cap discharge |
| Oscillator frequency | ~30 kHz (set by 499 kΩ RT resistor); governs soft-start timing and fault timer base |
| Soft-start ramp | 5 µA current source charging external SS capacitor; 3.75 V max sets 70% duty limit at 30 kHz |
| VDD700 rating | ≤500 V DC; enables high-voltage start-up directly from rectified AC or AC line via diode |
| CS overcurrent threshold | 1.2 V (V_CSTH1); triggers immediate GD shutdown when primary current exceeds limit |
| OVP_AUX detection | Scaled secondary voltage monitoring; fault triggered above V_OVPAUXRISE during open-loop operation |
| Gate driver type | Integrated low-side driver (GD pin); drives external N-channel FET with 7.5 V output |
Pinout & Package
Package: 10-pin SOIC (surface-mount, 3.9 mm × 4.9 mm, 1.27 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD700 | High-voltage start-up supply input | Accepts ≤500 V DC; powers IC during initial start-up before AUX_IN takeover |
| 2 NC | No connect | Unbonded pin; must remain unconnected per design |
| 3 RT | Oscillator timing resistor input | Connects 499 kΩ resistor to set ~30 kHz free-running frequency |
| 4 PULSEIN | Pulse Edge Transformer (PET) input | Receives synchronized PWM edges from secondary; positive = turn-on, negative = turn-off |
| 5 SS | Soft-start capacitor node | External 0.1 µF capacitor sets soft-start duration; internal 5 µA current source ramps voltage |
| 6 GND | Analog/digital ground reference | Common return for CS, GD, PULSEIN, and internal regulators |
| 7 CS | Primary current sense input | Monitors source current of external FET; compares to 1.2 V threshold for OCP |
| 8 GD | Low-side gate driver output | Drives N-channel MOSFET gate with 7.5 V swing; rated for typical flyback switching loads |
| 9 AUX_IN | Auxiliary supply input | Takes over power delivery after start-up; connects to rectified auxiliary winding (≤22 V) |
| 10 OVP_AUX | Auxiliary winding overvoltage sense | Resistor-divider input for secondary-side OVP; monitored only in open-loop conditions |
Key Features
| Feature | Design Value |
|---|---|
| X-cap discharge mode | Detects VDD700 UV transitions to activate active X-cap discharge path-replaces lossy bleeder resistors |
| Secondary synchronization | Uses PET-coupled pulses to align primary FET switching with secondary-side PWM-enables precise regulation |
| Auto-restart fault recovery | Fixed TAR timer initiates soft-start sequence after faults like OVP/UVP/OCP-no manual reset required |
| Dual power supply architecture | Seamlessly transitions from VDD700 (high-voltage start-up) to AUX_IN (low-voltage steady-state)-improves efficiency |
| Programmable soft-start | External SS capacitor sets ramp time; internal 3.75 V clamp limits max duty cycle to 70% during start-up |
Applications
| USB-C Power Delivery Adapters | Universal Input AC/DC Adapters |
|---|---|
Use Scenario: Compact 20–65 W USB PD chargers for smartphones and laptops using secondary-controlled flyback topology. IC Role / Device Role / Timing Role: Primary-side startup controller that handles initial power-up, fault response, and PET-synchronized gate drive-handing off regulation to EZ-PD™ PAG1S. Use Value: Enables fast, reliable start-up and efficient X-cap discharge-reducing no-load power and meeting CoC Tier 2 requirements. | Use Scenario: Multi-output wall adapters powering accessories across global mains voltages (85–265 VAC). IC Role / Device Role / Timing Role: Provides robust line protection (UVP/OVP), OCP, and soft-start-ensuring safe operation under brownout, surge, and overload conditions. Use Value: Integrated protections eliminate need for discrete protection ICs-reducing BOM count and board space. |
| Efficiency-Optimized Flyback Designs | Secondary-Controlled Isolated SMPS |
Use Scenario: High-efficiency offline SMPS where X-cap discharge replaces passive bleeders to meet <30 mW no-load standards. IC Role / Device Role / Timing Role: Detects VDD700 UV transitions to trigger active discharge path-discharging X-cap within 1 second after AC removal. Use Value: Achieves >88% average efficiency and <25 mW no-load consumption-exceeding DOE Level VI and EU CoC v5. | Use Scenario: Isolated DC-DC converters requiring precise timing coordination between primary and secondary sides. IC Role / Device Role / Timing Role: Synchronizes primary FET switching to secondary PWM edges via PET-eliminating frequency jitter and improving cross-regulation. Use Value: Reduces output ripple by 40% vs. asynchronous operation-critical for noise-sensitive analog or RF circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar primary-side startup controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCP1015 | Self-biased, fixed-frequency PWM controller without PET sync or X-cap discharge; requires external start-up circuit | Targeted at cost-sensitive, non-USB-PD flyback designs with simpler protection needs | Select when PET synchronization and active X-cap discharge are not required and BOM cost is prioritized |
| TI UCC28740 | Quasi-resonant flyback controller with valley-switching; includes primary-side regulation and no PET interface | Used in primary-regulated flyback topologies-no secondary controller needed | Select when full primary-side regulation is preferred over secondary-controlled architecture |
Compared with NCP1015 and UCC28740, CYPAP111A3-10SXQ uniquely delivers PET-based secondary synchronization and active X-cap discharge-making it optimal for high-efficiency, USB PD-compliant adapters requiring tight inter-side coordination and ultra-low no-load power.
Availability
CYPAP111A3-10SXQ is available at Aetrix Electronics and suitable for USB-C PD adapter development, universal-input AC/DC power supplies, and efficiency-optimized flyback converters requiring stable component supply and long-term lifecycle support.
Supply support for CYPAP111A3-10SXQ 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 high-voltage analog and digital power solutions.
CYPAP111A3-10SXQ belongs to the EZ-PD™ PAG1P product line-designed specifically for secondary-controlled AC/DC flyback adapters targeting USB Power Delivery compliance and ultra-low no-load power.
FAQ
What is the maximum voltage rating on the VDD700 pin?
The VDD700 pin has a maximum absolute rating of 500 V DC. It is designed to accept rectified AC mains or direct AC-line input via a series diode, enabling high-voltage start-up before auxiliary supply takeover. Exceeding 500 V risks permanent damage to the internal start-up regulator and shunt circuitry.
How does the soft-start function interact with the RT and SS pins?
The RT pin sets the oscillator frequency (~30 kHz) via a 499 kΩ resistor, determining the timing base for soft-start ramping. The SS pin connects to an external 0.1 µF capacitor charged by a 5 µA internal current source; the resulting 3.75 V ramp voltage limits gate duty cycle to 70% until secondary control is established.
Can CYPAP111A3-10SXQ operate without a secondary controller?
No-it is designed exclusively for secondary-controlled flyback topologies. It relies on Pulse Edge Transformer (PET) signals from a companion secondary controller (e.g., EZ-PD™ PAG1S) for PWM synchronization. Without valid PULSEIN pulses, it remains in soft-start or fault-recovery mode and cannot sustain regulated operation.
What protection features are active during the start-up phase?
During start-up, CYPAP111A3-10SXQ actively monitors line UVP/OVP via VDD700, overcurrent via CS (1.2 V threshold), and auxiliary winding OVP via OVP_AUX. It also enforces 19 µs max ON-time (70% duty at 30 kHz) and initiates auto-restart on fault detection-ensuring safe power-up before secondary handover.
CYPAP111A3-10SXQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ PAG1P
- Package/Case:
- 10-SOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Output Isolation:
- Isolated
- Internal Switch(s):
- No
- Voltage - Breakdown:
- 500V
- Topology:
- Flyback, Secondary Side SR
- Voltage - Start Up:
- -
- Voltage - Supply (Vcc/Vdd):
- 85V ~ 265V
- Duty Cycle:
- 70%
- Frequency - Switching:
- 30kHz
- Power (Watts):
- -
- Fault Protection:
- Current Limiting, Over Temperature, Over Voltage, Short Circuit, UVLO
- Control Features:
- Frequency Control, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-SOIC
- Mounting Type:
- Surface Mount
CYPAP111A3-10SXQ FAQ
1.How can I place an order for CYPAP111A3-10SXQ through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPAP111A3-10SXQ 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 CYPAP111A3-10SXQ reliable?
The price and inventory of CYPAP111A3-10SXQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPAP111A3-10SXQ is usually 5 days.
3.What payment methods are accepted for CYPAP111A3-10SXQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPAP111A3-10SXQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPAP111A3-10SXQ?
CYPAP111A3-10SXQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPAP111A3-10SXQ 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 CYPAP111A3-10SXQ?
For technical support, including CYPAP111A3-10SXQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPAP111A3-10SXQ requirements.
6.How does Aetrix verify that CYPAP111A3-10SXQ is sourced from the original manufacturer or authorized distributors?
All CYPAP111A3-10SXQ 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 CYPAP111A3-10SXQ meets industry standards.
7.What is the process for return or replacement of CYPAP111A3-10SXQ?
All CYPAP111A3-10SXQ units undergo pre-shipment inspection (PSI). If there is an issue with CYPAP111A3-10SXQ, 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 CYPAP111A3-10SXQ part is unused and in its original packaging.
Return procedure for CYPAP111A3-10SXQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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