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Infineon Technologies CYPD3171-24LQXQT
- Part No.:
- CYPD3171-24LQXQT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CYPD3171-24LQXQT.pdf
- Description:
- IC USB TYPE-C CONTROLLER 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,016
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Product details
Overview
CYPD3171-24LQXQT from Infineon is a single-chip USB Type-C port controller with integrated Arm® Cortex®-M0 MCU (64 KB Flash, 8 KB SRAM), full USB PD 3.1 + PPS support, dual legacy charger detection (QC 4.0, Apple 2.4A, AFC, BC 1.2), and analog VBUS regulation with low-side current sensing - deployed in PC adapters, car chargers, and power banks.
For engineers reviewing the CYPD3171-24LQXQT datasheet, CYPD3171-24LQXQT pinout, CYPD3171-24LQXQT application, or CYPD3171-24LQXQT equivalent, this device delivers verified CC-line BMC PHY compliance, on-die OVP/OCP/SCP fault protection, ±8-kV IEC61000-4-2 ESD on CC/VBUS_C_MON_DISCHARGE/DP0/DM0/P2.2/P2.3, and 24-pin QFN package with –40°C to +105°C operation.
Technical Context
The CYPD3171-24LQXQT implements a dedicated USB PD 3.1 physical layer with half-duplex BMC encoding, integrated RP/RD termination switching, and collision-avoidance logic for robust CC-channel communication. Its dual 8-bit SAR ADCs sample GPIO, DP/DM, and VBUS feedback nodes with internal bandgap or VDDD reference.
VBUS regulation uses analog feedback control with shunt regulator function, supporting direct optocoupler or resistive divider interfaces. Two PFET gate drivers and integrated low-side current sense amplifier enable constant-voltage/constant-current output control with hardware-based OVP (programmable), OCP, UVP, and SCP response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB PD Standard | Complies with USB PD Revision 3.1 including Programmable Power Supply (PPS) mode for fine-grained voltage/current tuning. |
| MCU Core | Arm® Cortex®-M0 CPU with 64-KB flash and 8-KB SRAM - enables field-upgradable firmware and real-time PD policy engine execution. |
| VBUS Regulation | Analog feedback control with integrated shunt regulator; supports direct optocoupler interface or resistive divider for secondary-side voltage regulation. |
| Charger Detection | Dual independent blocks supporting QC 4.0, Apple 2.4A, Samsung AFC, and BC 1.2 via DP/DM line termination emulation. |
| ESD Protection | ±8-kV contact / ±15-kV air-gap per IEC61000-4-2 Level 4C on CC1, CC2, VBUS_C_MON_DISCHARGE, DP0, DM0, P2.2, P2.3. |
| Operating Temp | –40°C to +105°C industrial range - validated for automotive-grade car charger and high-ambient power bank environments. |
| Supply Range | 3.0 V to 24.5 V input (30-V tolerant) - accommodates wide-input AC/DC adapter and battery-backed power bank topologies. |
Pinout & Package
Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), wettable flank, RoHS-compliant, with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CC1, CC2 | USB Type-C Configuration Channel | BMC-encoded PD communication lines with integrated RP/RD switching, dead-battery RD bond option, and VBUS short protection up to 22 V DC. |
| DP0, DM0 | USB 2.0 Data Pair (Type-A) | Legacy charging detection interface for BC 1.2, Apple, QC 4.0, and AFC protocols; supports analog mux to ADC inputs. |
| VBUS_C_CTRL | VBUS Control Output | Drives external PFET gate for VBUS path control; paired with integrated low-side current sense amplifier for CC/CV regulation. |
| FB | Feedback Input | Analog input for secondary-side voltage regulation - accepts optocoupler output or resistor divider signal for closed-loop VBUS control. |
| VDDD | Digital Core Supply | 1.8 V regulated supply for MCU and digital peripherals; generated internally from VBUS or external source. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB PD PHY | Full BMC encoder/decoder with collision avoidance and RP/RD switching - eliminates need for external transceiver and discrete termination resistors. |
| Dual Legacy Charger Blocks | Independent DP/DM detection circuits emulate QC 4.0, Apple 2.4A, AFC, and BC 1.2 without external ICs or firmware overhead. |
| Analog VBUS Regulation | Direct feedback interface (opto or resistor divider) with shunt regulator function - enables stable CV/CC output without external error amplifier. |
| System-Level ESD Protection | On-chip ±8-kV contact ESD on CC, VBUS_C_MON_DISCHARGE, DP0, DM0, P2.2, P2.3 - reduces BOM count and PCB area vs. discrete TVS diodes. |
| High-Voltage VBUS Short Tolerance | CC1/CC2 pins withstand accidental shorts to VBUS up to 22 V DC for 1000 hours - prevents latch-up or permanent damage in compact Type-C connector layouts. |
Applications
| PC Power Adapter | Automotive Car Charger |
|---|---|
Use Scenario: 65 W USB-C PD adapter for ultrabooks with PPS support for fast charging. IC Role / Device Role / Timing Role: Primary USB PD policy manager and VBUS regulation controller with real-time BMC protocol handling and analog feedback loop. Use Value: Enables single-chip implementation of PD 3.1 + PPS, eliminating external PD transceiver, termination resistors, and discrete OVP/OCP circuitry. | Use Scenario: Dual-port 45 W car charger with Type-C + Type-A outputs and temperature-resilient operation. IC Role / Device Role / Timing Role: Integrated port controller managing CC negotiation, legacy charging on DP/DM, and VBUS discharge during plug removal. Use Value: –40°C to +105°C rating and on-die ESD ensure reliability in vehicle cabin environments; dual charger detection supports mixed-device fleets. |
| Portable Power Bank | USB-C Wall Charger |
Use Scenario: 20,000 mAh power bank with bidirectional PD 3.1 and PPS charging. IC Role / Device Role / Timing Role: Bidirectional PD controller with dead-battery RD bonding option and VBUS discharge FET control for safe port disconnect. Use Value: Bonded dead-battery RD on CC pins ensures sink-role detection even with zero battery voltage - critical for cold-start capability. | Use Scenario: Compact 30 W wall charger with no external clock required. IC Role / Device Role / Timing Role: Self-contained Type-C controller with integrated oscillator, flash-based firmware, and hardware OVP/OCP response. Use Value: Eliminates external crystal, reduces component count by ≥7 parts, and enables <10 ms hardware OVP shutdown without MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB Type-C port controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CYPD3174-24LQXQT | Same die, dual-port configuration (2× Type-C); lacks Type-A DP/DM support; higher pin count for second CC pair. | Targeted at dual-C-port adapters, not Type-C + Type-A hybrid designs. | Select when two independent Type-C ports are required and legacy Type-A compatibility is unnecessary. |
| STUSB4500QTR | Standalone USB PD 3.0 controller (no MCU, no legacy charging blocks, no VBUS regulation); requires external microcontroller and analog feedback circuitry. | Suitable only for simple PD-only applications without PPS, QC, or Apple charging support. | Choose only if firmware is handled externally and system already includes dedicated MCU and analog regulation circuitry. |
Compared with CYPD3171-24LQXQT, CYPD3174 offers dual-C port capability but removes Type-A support, while STUSB4500 requires full external system integration - making CYPD3171 optimal for cost-sensitive, feature-complete hybrid-port designs.
Availability
CYPD3171-24LQXQT is available at Aetrix Electronics and suitable for PC power adapters, automotive car chargers, and portable power banks requiring stable component supply, extended temperature operation, and USB PD 3.1 + PPS compliance.
Supply support for CYPD3171-24LQXQT 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 leader specializing in power management, automotive MCUs, and USB-C solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.
CYPD3171 belongs to the EZ-PD™ CCG3PA product line, engineered specifically for consumer-grade USB-C power delivery in space-constrained, thermally demanding applications like adapters and mobile chargers.
FAQ
Does CYPD3171-24LQXQT support USB PD 3.1 Programmable Power Supply (PPS)?
Yes, CYPD3171-24LQXQT fully supports USB PD 3.1 Revision including PPS mode, enabling precise 20 mV/step voltage and 50 mA/step current adjustments during charging. This is implemented in hardware within the BMC PHY and policy engine, with firmware updates delivered over the CC line or SWD interface.
What is the purpose of the dead-battery RD bonding option?
The dead-battery RD bonding option connects fixed pull-down resistors directly to CC1/CC2 pins via metal bond wires - ensuring reliable sink-role detection even when the host system battery is fully depleted (0 V). This is factory-configured per part number and essential for power bank cold-start functionality.
Can CYPD3171-24LQXQT regulate VBUS without an external optocoupler?
No - CYPD3171 requires either an optocoupler-based feedback loop or a resistor divider network connected to the FB pin to close the VBUS regulation loop. The chip provides the shunt regulator and error amplifier interface but does not include isolated feedback components; external isolation remains necessary for primary-side referenced designs.
How does the integrated low-side current sense amplifier function in constant-current mode?
The integrated low-side current sense amplifier measures voltage drop across an external shunt resistor placed between the load and ground. Its output feeds into the analog regulation loop, enabling hardware-assisted constant-current control without MCU intervention - critical for accurate battery charging and safety-critical current limiting.
CYPD3171-24LQXQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EZ-PD™ CCG3PA
- Package/Case:
- 24-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- USB Type C
- Core Processor:
- ARM® Cortex®-M0
- Program Memory Type:
- FLASH (64kB)
- Controller Series:
- -
- RAM Size:
- 8K x 8
- Interface:
- I2C, SPI, UART
- Number of I/O:
- 12
- Voltage - Supply:
- 3V ~ 24.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
CYPD3171-24LQXQT FAQ
1.How can I place an order for CYPD3171-24LQXQT through Aetrix?
Please submit a Request for Quotation (RFQ) for CYPD3171-24LQXQT 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 CYPD3171-24LQXQT reliable?
The price and inventory of CYPD3171-24LQXQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD3171-24LQXQT is usually 5 days.
3.What payment methods are accepted for CYPD3171-24LQXQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD3171-24LQXQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CYPD3171-24LQXQT?
CYPD3171-24LQXQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CYPD3171-24LQXQT 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 CYPD3171-24LQXQT?
For technical support, including CYPD3171-24LQXQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD3171-24LQXQT requirements.
6.How does Aetrix verify that CYPD3171-24LQXQT is sourced from the original manufacturer or authorized distributors?
All CYPD3171-24LQXQT 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 CYPD3171-24LQXQT meets industry standards.
7.What is the process for return or replacement of CYPD3171-24LQXQT?
All CYPD3171-24LQXQT units undergo pre-shipment inspection (PSI). If there is an issue with CYPD3171-24LQXQT, 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 CYPD3171-24LQXQT part is unused and in its original packaging.
Return procedure for CYPD3171-24LQXQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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