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Infineon Technologies CYPAP111A3-10SXQT
- Part No.:
- CYPAP111A3-10SXQT
- Manufacturer:
- Infineon Technologies
- Category:
- AC DC Converters, Offline Switches
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
CYPAP111A3-10SXQT.pdf
- Description:
- PRIMARY SIDE STARTUP CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
CYPAP111A3-10SXQT 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 X-cap discharge mode. It synchronizes to secondary PWM via Pulse Edge Transformer (PET) and delivers fault protection including line UVP/OVP, OCP, and auxiliary winding OVP - deployed in USB PD Type-C mobile power adapters.
For engineers reviewing the CYPAP111A3-10SXQT datasheet, CYPAP111A3-10SXQT pinout, CYPAP111A3-10SXQT application, or CYPAP111A3-10SXQT equivalent, key selection criteria include PET-based synchronization timing, soft-start capacitor programmability (SS pin), VDD700 high-voltage start-up capability (≤500 V), and dual-power-source switching (VDD700 → AUX_IN).
Technical Context
The device operates in a secondary-controlled flyback topology where regulation is handled exclusively by the companion EZ-PD™ PAG1S controller; CYPAP111A3-10SXQT provides only start-up sequencing, primary FET gate drive, and fault response. Its free-running oscillator (RT pin, 499 kΩ) sets nominal 30 kHz frequency, and soft-start ramp (5 µA current source, 3.75 V max) limits initial duty cycle to 70% (19 µs ON time).
Synchronization occurs via PULSEIN using pulse-edge detection: positive edge triggers FET turn-on, negative edge triggers turn-off; three consecutive negative pulses signal shutdown. Protection logic includes auto-restart on line UVP/OVP (TAR = fixed timer), latch-off on critical faults, and OVP_AUX monitoring only during open-loop operation (e.g., start-up or post-fault recovery).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 85–265 VAC universal mains; enables single-design global adapter compliance without hardware change. |
| VDD700 max rating | 500 V; allows direct connection to rectified AC or AC mains via diode for X-cap discharge, eliminating passive bleed resistors. |
| Oscillator frequency | 30 kHz (typical); set by 499 kΩ RT resistor; determines base switching frequency and soft-start timing resolution. |
| Soft-start ramp | 5 µA current source charging external SS capacitor to 3.75 V; defines controlled power ramp-up duration and prevents inrush stress. |
| Gate driver output | Low-side MOSFET driver (GD pin); drives external primary switch with 19 µs max ON time during soft-start, 25 µs when synchronized. |
| AUX_IN switchover | Automatic transition from VDD700 to AUX_IN supply once auxiliary winding delivers ≥7.5 V; reduces primary-side power loss after start-up. |
| OVP_AUX detection | Monitors scaled secondary voltage at OVP_AUX; trips if >V_OVPAUXRISE; active only during open-loop phases to avoid false triggers under regulation. |
Pinout & Package
Supplied in a 10-pin SOIC package with standard 1.27 mm pitch and gull-wing leads; RoHS-compliant, surface-mountable, and rated for industrial temperature range (–40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD700 | High-voltage start-up supply input | Accepts up to 500 V; powers IC during start-up before AUX_IN takes over; enables X-cap discharge functionality. |
| 2 NC | No connect | Unbonded pad; must remain unconnected per design; no routing or thermal tie permitted. |
| 3 RT | Oscillator timing resistor node | Connects external 499 kΩ resistor to set 30 kHz free-running oscillator frequency and soft-start timing reference. |
| 4 PULSEIN | Pulse Edge Transformer (PET) input | Receives isolated PWM edges from secondary; positive edge = FET ON, negative edge = FET OFF; supports shutdown signaling via triple negative pulses. |
| 5 SS | Soft-start capacitor node | Connects 0.1 µF capacitor to GND; internal 5 µA current source ramps voltage to 3.75 V to control duty-cycle ramp rate. |
| 6 GND | Analog/digital ground reference | Common return for CS, GD, PULSEIN, SS, and internal regulators; requires low-impedance PCB plane connection. |
| 7 CS | Primary current sense input | Monitors voltage across RSENSE; triggers OCP when >V_CSTH1 threshold; used only during start-up and fault conditions. |
| 8 GD | Low-side gate driver output | Drives external N-channel MOSFET gate; limited to 19 µs ON time during soft-start, 25 µs when synchronized to secondary. |
| 9 AUX_IN | Auxiliary supply input | Switches IC power source from VDD700 to auxiliary winding output after start-up; improves efficiency by disabling HV start-up path. |
| 10 OVP_AUX | Auxiliary winding overvoltage monitor | Inputs scaled secondary voltage via resistor divider; detects OVP only during open-loop operation (e.g., start-up or fault recovery). |
Key Features
| Feature | Design Value |
|---|---|
| X-cap discharge mode | Enables active discharge of EMI filter X-capacitors using internal circuitry instead of lossy bleed resistors, improving standby efficiency by ~15–20 mW. |
| Secondary synchronization via PET | Eliminates need for optocoupler-based feedback; uses pulse-edge transformer for galvanic isolation and precise timing transfer between primary and secondary controllers. |
| Dual power supply architecture | Automatically transitions from high-voltage VDD700 start-up supply to low-loss AUX_IN auxiliary supply once secondary winding delivers stable voltage. |
| Programmable soft-start | External RC network (SS pin + 0.1 µF cap, RT pin + 499 kΩ resistor) sets ramp time and oscillator frequency independently for robust start-up tuning. |
| Multi-level fault protection | Combines auto-restart (UVP/OVP), latch-off (critical failure), gate-OFF (transient), and max-duty-cycle limiting (soft-start) to match failure severity with recovery strategy. |
Applications
| USB PD Type-C Mobile Adapter | Universal Input Wall Charger |
|---|---|
Use Scenario: Compact 27–65 W USB PD adapter powering smartphones and tablets with variable output (5–20 V). IC Role / Device Role / Timing Role: Primary-side start-up controller that initiates flyback operation, drives primary FET, and synchronizes to EZ-PD™ PAG1S secondary controller via PET during regulation. Use Value: Enables zero-crossing-free start-up, eliminates optocoupler, and supports X-cap discharge for <30 mW no-load consumption meeting DOE Level VI and EU CoC Tier 2. | Use Scenario: Multi-USB port wall charger delivering simultaneous 5 V/3 A and 9 V/2 A outputs with shared flyback transformer. IC Role / Device Role / Timing Role: Provides isolated primary-side gate drive and fault response while offloading voltage/current regulation entirely to secondary-side controller. Use Value: Reduces BOM count by removing optocoupler and start-up resistor network; improves reliability and simplifies EMI filter design via active X-cap discharge. |
| Efficiency-Optimized AC/DC Adapter | Secondary-Controlled Flyback Reference Design |
Use Scenario: High-efficiency 45 W adapter targeting <100 mW no-load power and >90% peak efficiency at 230 VAC input. IC Role / Device Role / Timing Role: Manages start-up sequence, monitors line UVP/OVP and primary OCP, and executes auto-restart or latch-off based on fault type and duration. Use Value: Achieves DOE Level VI compliance through active X-cap discharge and dual-supply architecture, reducing standby losses by 25–30% vs. passive solutions. | Use Scenario: Infineon reference design (e.g., PAG1P+PAG1S EVK) demonstrating USB PD 3.0 + PPS implementation. IC Role / Device Role / Timing Role: Primary-side timing and gate control unit that interfaces with EZ-PD™ PAG1S via PET and handles all primary-side protection logic independent of secondary regulation loop. Use Value: Enables full separation of control responsibilities: secondary handles closed-loop regulation and protocol, primary handles isolation barrier interface and safety-critical protection. |
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 |
|---|---|---|---|
| MP6908A | Standalone SR controller with integrated gate driver; lacks X-cap discharge, PET interface, and dual-supply architecture. | Designed for synchronous rectification only; requires separate primary controller and optocoupler-based feedback. | Select when retrofitting existing flyback designs with SR but retaining legacy primary control and feedback architecture. |
| UCC28780 | Active-clamp flyback controller with integrated HV start-up; supports quasi-resonant operation but no PET synchronization or X-cap discharge mode. | Targets higher-power (>65 W), higher-efficiency QR flyback topologies; not compatible with secondary-controlled PAG1S ecosystem. | Select for new high-efficiency QR designs requiring tighter regulation and lower EMI, not for USB PD PAG1P+PAG1S interoperability. |
Compared with MP6908A and UCC28780, CYPAP111A3-10SXQT uniquely integrates PET-based synchronization, active X-cap discharge, and seamless VDD700→AUX_IN switchover - making it the only solution qualified for Infineon's EZ-PD™ PAG1P+PAG1S USB PD reference platform.
Availability
CYPAP111A3-10SXQT is available at Aetrix Electronics and suitable for USB PD Type-C mobile adapters, universal-input wall chargers, and efficiency-optimized AC/DC power supplies requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for CYPAP111A3-10SXQT 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 electronics, and industrial control ICs, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CYPAP111A3-10SXQT belongs to the EZ-PD™ PAG1P product line, engineered specifically for secondary-controlled USB PD power adapters - enabling compact, efficient, and standards-compliant AC/DC conversion without optocouplers or passive X-cap bleed networks.
FAQ
What is the maximum allowable voltage on the VDD700 pin?
The VDD700 pin has an absolute maximum rating of 500 V. This allows direct connection to rectified AC mains or AC input via a series diode for X-cap discharge operation. Operation above this voltage risks permanent damage to the internal high-voltage start-up regulator and shunt circuitry. Designers must ensure transient clamping (e.g., TVS) is applied if surge immunity beyond 500 V is required.
How does the PULSEIN pin interpret secondary-side PWM signals?
The PULSEIN pin detects edge transitions: a rising edge triggers primary FET turn-on, and a falling edge triggers turn-off. The device requires clean, fast-rising/falling pulses within specified amplitude (V_PULSEINPOSAMP/V_PULSEINNEGAMP) and width (T_PULSEINPW) limits. Three consecutive falling edges signal shutdown, initiating a 200 ms delay before gate driver disable.
Can CYPAP111A3-10SXQT operate without an auxiliary winding?
No - the device requires AUX_IN to sustain operation after start-up. While VDD700 powers the IC initially, the internal LDO switches to AUX_IN once auxiliary winding voltage exceeds the switchover threshold (~7.5 V). Without AUX_IN, the IC will shut down after soft-start completes due to VDD700 depletion; no continuous operation is possible.
What protection features activate during line undervoltage?
Upon detecting VDD700 voltage below V_VDDUVRISE (typically ~65 V), the gate driver disables immediately and enters auto-restart mode. The fixed TAR timer waits before initiating a new soft-start sequence. This prevents erratic switching during brown-out conditions and ensures clean restart once line voltage recovers into specification.
CYPAP111A3-10SXQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ PAG1P
- Package/Case:
- 10-SOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
CYPAP111A3-10SXQT FAQ
1.How can I place an order for CYPAP111A3-10SXQT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPAP111A3-10SXQT 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 CYPAP111A3-10SXQT reliable?
The price and inventory of CYPAP111A3-10SXQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPAP111A3-10SXQT is usually 5 days.
3.What payment methods are accepted for CYPAP111A3-10SXQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPAP111A3-10SXQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPAP111A3-10SXQT?
CYPAP111A3-10SXQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPAP111A3-10SXQT 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 CYPAP111A3-10SXQT?
For technical support, including CYPAP111A3-10SXQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPAP111A3-10SXQT requirements.
6.How does Aetrix verify that CYPAP111A3-10SXQT is sourced from the original manufacturer or authorized distributors?
All CYPAP111A3-10SXQT 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 CYPAP111A3-10SXQT meets industry standards.
7.What is the process for return or replacement of CYPAP111A3-10SXQT?
All CYPAP111A3-10SXQT units undergo pre-shipment inspection (PSI). If there is an issue with CYPAP111A3-10SXQT, 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 CYPAP111A3-10SXQT part is unused and in its original packaging.
Return procedure for CYPAP111A3-10SXQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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