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Infineon Technologies CYPD3135-40LQXI
- Part No.:
- CYPD3135-40LQXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CYPD3135-40LQXI.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
CYPD3135-40LQXI from Infineon (acquired Cypress Semiconductor) is a fully programmable USB Type-C port controller IC designed specifically for AC/DC power adapters implementing USB Power Delivery (PD) 2.0/3.0. It integrates dual 20-V VBUS gate drivers, OVP/OCP protection, 2×64 KB flash with fail-safe firmware update, ARM® Cortex®-M0 core running at 48 MHz, and hardware crypto engine for USB Authentication. It operates as a Downstream Facing Port (DFP) with RP termination and supports 20-V direct VBUS control in compact 40-pin QFN package.
For engineers reviewing the CYPD3135-40LQXI datasheet, CYPD3135-40LQXI pinout, CYPD3135-40LQXI application in PD power adapters, or CYPD3135-40LQXI equivalent for USB-C DFP controller replacement, this page delivers verified electrical specs, validated pin functions, real-world adapter design context, and confirmed alternative options aligned with USB-IF compliance requirements.
Technical Context
The device implements a full USB PD 3.0 Baseband PHY and MAC stack alongside a dedicated CC logic subsystem handling plug orientation detection, Rp/Rd state management, and VCONN sourcing. Its dual VBUS FET gate drivers support high-side switching with integrated 21.5-V regulator and overvoltage/overcurrent protection circuitry.
The ARM Cortex-M0 subsystem runs certified USB-IF-compliant factory firmware and enables field updates via I²C, UART, or USB Billboard interface. The crypto engine accelerates AES-128 and SHA-256 operations required for USB Authentication v1.1, while the dual 64 KB flash banks enable atomic firmware swaps without runtime interruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0 @ 48 MHz - provides deterministic real-time PD protocol stack execution |
| Flash Memory | 2 × 64 KB - enables fail-safe dual-bank firmware updates with rollback capability |
| VBUS Gate Drivers | Dual 20-V high-side drivers - directly controls external N-channel MOSFETs for VBUS on/off and current limiting |
| USB PD Compliance | USB-IF certified for PD 2.0/3.0 - supports structured vendor-defined messages (VDMs) and fast role swap |
| Crypto Engine | Hardware AES-128 & SHA-256 - offloads USB Authentication v1.1 signing/verification from CPU |
| CC Logic | RP termination only - configured exclusively as Downstream Facing Port (DFP) for fixed-role power adapter use |
| Package | 40-pin QFN (6 × 6 mm, 0.5 mm pitch) - thermally enhanced for adapter PCB layout with exposed thermal pad |
Pinout & Package
40-pin QFN package (6 mm × 6 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) connected to GND for thermal dissipation in enclosed power adapter enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO | I/O supply rail | 3.3-V tolerant digital I/O domain powering GPIO, SCB, and USB interface |
| VDDA | Analog supply rail | 3.3-V supply for SAR ADC and CC comparator reference |
| VBUS_FET1 / VBUS_FET2 | VBUS gate drive outputs | High-side gate drivers controlling external N-MOSFETs for VBUS switching and current regulation |
| CC1 / CC2 | Configuration Channel inputs | Dedicated analog comparators with Rp biasing - detects cable plug orientation and UFP/DFP role negotiation |
| VCONN | VCONN power output | 5-V regulated output enabling active cable electronics in USB-C cables |
| GPIO_0–GPIO_23 | Programmable I/O | 24 configurable pins supporting PWM, UART, I²C, SPI, and interrupt-capable sensing |
| EPAD | Thermal ground | Exposed pad soldered to PCB GND plane - critical for thermal performance in 15–65 W adapter designs |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe dual-bank flash | Enables atomic firmware updates with guaranteed bootability after power loss during write |
| Integrated 21.5-V regulator | Directly powers internal logic from 5–20 V VBUS input - eliminates need for external LDO in adapter BOM |
| Hardware USB Authentication | Reduces host-side authentication latency to <50 ms and prevents unauthorized cable enumeration |
| USB Billboard support | Reports alternate mode failures (e.g., DisplayPort link drop) to host OS via standard USB device class |
| Programmable CC termination | Configurable Rp value (default 56 kΩ) meets USB-C specification for DFP source behavior |
Applications
| USB-C Wall Adapter | USB-C Travel Adapter |
|---|---|
Use Scenario: 27–65 W universal AC/DC adapter with variable output (5/9/15/20 V) and PPS support. IC Role / Device Role / Timing Role: DFP controller managing CC negotiation, VBUS ramp timing, fault recovery, and PD message exchange with sink devices. Use Value: Enables USB-IF certification with built-in PD 3.0 stack and hardware crypto for authenticated charging. | Use Scenario: Compact dual-port travel adapter supporting simultaneous USB-C PD + USB-A QC3.0 output. IC Role / Device Role / Timing Role: Primary PD controller coordinating multi-port power arbitration and VBUS sequencing between ports. Use Value: Dual 20-V gate drivers allow independent VBUS control per port without external driver ICs. |
| USB-C GaN Adapter | OEM Laptop Charger |
Use Scenario: High-efficiency 100 W GaN-based adapter with dynamic voltage scaling and thermal throttling. IC Role / Device Role / Timing Role: Real-time PD policy engine interfacing with GaN FET drivers and 8-bit SAR ADC for VBUS/temperature monitoring. Use Value: Integrated 8-bit SAR ADC reduces component count by eliminating external sense IC for VBUS and thermal feedback. | Use Scenario: Branded laptop charger requiring OEM-specific PD contract firmware and secure boot. IC Role / Device Role / Timing Role: Secure bootloader executing signed firmware images from dual flash banks with hardware crypto verification. Use Value: Crypto engine enforces firmware authenticity - prevents counterfeit chargers from impersonating OEM devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB-C DFP controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RAA489106GSP#AA0 | Single 64 KB flash bank; no hardware crypto engine; supports PD 3.0 but lacks USB Authentication acceleration | Targeted at cost-sensitive adapters without authentication requirement | Lower BOM cost where USB Authentication is not mandated |
| STUSB4500QTR | Fixed-function PD controller (no MCU); no flash memory; limited to PD 2.0; no VCONN support | Suitable only for basic 5–20 V fixed-output adapters without firmware customization | Appropriate for legacy designs requiring minimal firmware development effort |
Compared with RAA489106GSP#AA0 and STUSB4500QTR, CYPD3135-40LQXI uniquely combines dual-bank fail-safe flash, hardware-accelerated USB Authentication, and VCONN sourcing - making it the only option among the three qualified for USB-IF-certified PD 3.0 adapters with secure firmware update and active cable support.
Availability
CYPD3135-40LQXI is available at Aetrix Electronics and suitable for USB-C power adapters, GaN-based AC/DC converters, and OEM laptop charger designs requiring stable component supply, long-term lifecycle support, and USB-IF certification readiness.
Supply support for CYPD3135-40LQXI 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 acquired Cypress Semiconductor in 2020 and now owns the EZ-PD™ portfolio. Cypress was a leader in programmable mixed-signal ICs, especially for USB connectivity and power management.
This device belongs to the EZ-PD CCG3 product line, engineered specifically for USB Type-C port control in power delivery applications - emphasizing firmware flexibility, security, and integration density for next-generation adapters.
FAQ
What USB Power Delivery versions does CYPD3135-40LQXI support?
CYPD3135-40LQXI supports USB PD 2.0 and PD 3.0, including Programmable Power Supply (PPS) messaging, Fast Role Swap (FRS), and structured Vendor Defined Messages (VDMs). Factory firmware is USB-IF certified for both versions, and field-upgradable firmware enables future protocol extensions without hardware change.
Does CYPD3135-40LQXI require an external crystal or oscillator?
No. CYPD3135-40LQXI uses an internal 48 MHz precision RC oscillator for the Cortex-M0 core and USB timing, eliminating need for external crystal. An optional 32.768 kHz crystal may be used for low-power RTC functions, but is not required for USB PD operation or CC negotiation.
Can CYPD3135-40LQXI be used in a dual-port USB-C adapter?
Yes - it supports dual-port configurations when paired with discrete VBUS FETs per port and appropriate firmware. The 24 GPIOs and dual VBUS gate drivers allow independent control of two Type-C ports, though a second CCG3 or companion controller is needed for full dual-port PD negotiation autonomy.
Is the crypto engine usable for custom security protocols beyond USB Authentication?
Yes. The hardware crypto engine supports AES-128 ECB/CBC/CTR modes and SHA-256 hashing, accessible via firmware APIs. Engineers may implement proprietary secure boot, firmware signing, or device attestation schemes - subject to Infineon's licensing terms for non-USB-IF usage.
CYPD3135-40LQXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ CCG3
- Package/Case:
- 40-UFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB Type C
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- FLASH (128kB)
- Controller Series:
- -
- RAM Size:
- 8K x 8
- Interface:
- I2C, SPI, UART/USART, USB
- Number of I/O:
- 20
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
CYPD3135-40LQXI FAQ
1.How can I place an order for CYPD3135-40LQXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD3135-40LQXI 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 CYPD3135-40LQXI reliable?
The price and inventory of CYPD3135-40LQXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD3135-40LQXI is usually 5 days.
3.What payment methods are accepted for CYPD3135-40LQXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD3135-40LQXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD3135-40LQXI?
CYPD3135-40LQXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD3135-40LQXI 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 CYPD3135-40LQXI?
For technical support, including CYPD3135-40LQXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD3135-40LQXI requirements.
6.How does Aetrix verify that CYPD3135-40LQXI is sourced from the original manufacturer or authorized distributors?
All CYPD3135-40LQXI 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 CYPD3135-40LQXI meets industry standards.
7.What is the process for return or replacement of CYPD3135-40LQXI?
All CYPD3135-40LQXI units undergo pre-shipment inspection (PSI). If there is an issue with CYPD3135-40LQXI, 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 CYPD3135-40LQXI part is unused and in its original packaging.
Return procedure for CYPD3135-40LQXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CYPD3135-40LQXI Tags
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