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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies CYPD8125-48LDXI

Name: CYPD8125-48LDXI
Brand: Infineon Technologies
SKU: CYPD8125-48LDXI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CYPD8125-48LDXI

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 48-UFQFN Exposed Pad

Datasheet:: CYPD8125-48LDXI.pdf

Description:: TYPE-C - OTHERS

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CYPD8125-48LDXI from Infineon is a dual-port USB Type-C and Power Delivery (PD) 3.1 port controller featuring an integrated 48-MHz Arm® Cortex®-M0+ MCU, 256 KB Flash/32 KB SRAM, 97-ball BGA package, and native support for Extended Power Range (EPR) up to 28 V. It integrates VCONN FETs, 3:1 SBU muxes, VBUS provider NFET gate driver with slew-rate control and fault protection, and dead-battery Rd termination - deployed in high-density notebook USB-C docking stations.

For engineers reviewing the CYPD8125-48LDXI datasheet, CYPD8125-48LDXI pinout, CYPD8125-48LDXI application, or CYPD8125-48LDXI equivalent, key selection criteria include EPR compliance at 28 V, dual-port PD protocol stack execution, integrated analog sensing (12-bit SAR ADC), hardware-controlled VBUS OVP/UVP/OCP protection, and TRNG-enabled secure boot capability.

Technical Context

The device implements two independent USB PD subsystems - one per port - each supporting full PD 3.1 negotiation including Fast Role Swap (FRS), Extended Data Messaging, and EPR voltage scaling. Its integrated baseband PHY handles CC line detection, Rp/Rd termination switching, and BMC decoding without external components.

Power management includes a high-voltage LDO (operable up to 28 V) for dead-battery operation, configurable hardware protection on the VBUS provider path (overvoltage, undervoltage, overcurrent, short-circuit, reverse current, thermal shutdown), and a VBUS high-side current sense amplifier calibrated for 5-mΩ shunt resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
USB PD Spec Support	Complies with USB PD 3.1 Rev 1.2, enabling 28 V EPR negotiation without external components
CPU Core	Arm® Cortex®-M0+, 48 MHz - executes dual-port PD state machines and firmware policy engine in real time
Memory	256 KB Flash (code storage), 32 KB SRAM (retained in deep sleep), 96 KB ROM (boot & crypto routines)
Analog Peripherals	12-bit SAR ADC (VBUS sensing), VBUS current sense amplifier (5-mΩ shunt compatible), TRNG (AIS-31 compliant)
Digital Peripherals	4x TCPWM (timers/counters/PWM), 4x SCB (configurable as I²C/SPI/UART), 2x VCONN FET drivers
Protection Features	Hardware-enforced VBUS OVP/UVP/OCP/SCP/reverse-current/thermal shutdown - no firmware dependency
Operating Voltage	VSYS: 2.8–5.5 V; VBUS: 4–28 V - supports direct VBUS-powered operation during dead-battery conditions

Pinout & Package

Package: 97-ball BGA (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3 (MSL3).

Pin/Terminal	Circuit Role	Design Meaning
CC1 / CC2	Type-C Configuration Channel	Dual bidirectional BMC transceivers with integrated Rp/Rd termination and dead-battery Rd switching
VCONN1 / VCONN2	EMCA Cable Power Supply	Integrated 300-mA FET drivers per port - eliminates need for external VCONN regulators
VBUS_SRC	VBUS Provider Path Control	High-side NFET gate driver with slew-rate control and fault reporting (OVP/UVP/OCP/thermal)
SBU1 / SBU2	Sideband Use Mux Control	Integrated 3:1 analog mux per port - enables Alt Mode signaling and closed-chassis debug without external switches
GPIO[0:15]	Programmable I/O Matrix	Configurable as digital I/O, interrupt sources, or peripheral function pins (I²C/SPI/UART/TCPWM)

Key Features

Feature	Design Value
Dual-port PD 3.1 Stack	Fully hardware-accelerated negotiation per port - supports concurrent EPR contracts and FRS with external load switch
Integrated VBUS Sensing	On-die high-side current sense amplifier + 12-bit SAR ADC - enables accurate power metering with 5-mΩ shunt
Secure Boot & Crypto	AES-128, SHA2-256, RSA-3072/ECC-256 via hardware accelerator; TRNG certified to AIS-31
No External Clock Required	Fully integrated oscillator - eliminates crystal, saves PCB area, improves startup reliability
Dead-Battery Operation	28-V capable HV LDO powers MCU and PD logic directly from VBUS - enables port enumeration even when system battery is depleted

Applications

Notebook Docking Station

USB-C Laptop Charging Hub

Use Scenario: Multi-function dock connecting laptop to DisplayPort, USB-A, Ethernet, and PD charging via single USB-C cable.

IC Role / Device Role / Timing Role: Dual-port PD controller managing host (DFP) and sink (UFP) roles, negotiating EPR contracts, and controlling VBUS path switching.

Use Value: Enables 28 V/5 A (140 W) charging while simultaneously supporting DP Alt Mode and data tunneling - all within thermal limits of compact enclosure.

Use Scenario: Compact travel hub providing 100 W PD input, 15 W PD output, and USB 3.2 Gen 1 data pass-through.

IC Role / Device Role / Timing Role: Acts as UFP for upstream PD input and DFP for downstream PD output - performs Fast Role Swap during cable reorientation.

Use Value: Eliminates need for discrete PD controllers and level-shifters - reduces BOM count by 4 ICs and simplifies firmware validation.

Thunderbolt™ 4 Host Controller Companion

Industrial Embedded USB-C Interface Module

Use Scenario: Add-in card providing Thunderbolt 4 host functionality with backward-compatible USB-C PD charging.

IC Role / Device Role / Timing Role: Manages CC line handshaking, VCONN power delivery to active cables, and BMC decoding for TB4 link training coordination.

Use Value: Integrates SBU mux control and VCONN FETs - removes 2 external analog switches and 2 MOSFET drivers from reference design.

Use Scenario: Ruggedized medical or test equipment interface module requiring hot-plug-safe USB-C connectivity and secure firmware updates.

IC Role / Device Role / Timing Role: Provides authenticated PD negotiation, secure boot, and tamper-resistant firmware update via encrypted PD messages.

Use Value: Meets IEC 62366 usability requirements through deterministic PD state machine timing and hardware-enforced crypto acceleration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-port USB-C PD controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CYPD8225-97BZXI	Same die, identical feature set, but shipped in lead-free, halogen-free 97-ball BGA with enhanced thermal pad under die	Preferred for high-power industrial designs requiring improved thermal dissipation (>1.5 W sustained)	Select when board-level thermal resistance exceeds 35°C/W and junction temperature margin is <15°C
UPD350A-EZ-TR	Single-port PD 3.0 controller (no EPR), 48-pin QFN, lacks integrated VCONN FETs and SBU muxes	Targeted at cost-sensitive single-port applications where EPR and Alt Mode are not required	Choose only if design uses external VCONN regulation and does not require SBU switching or >20 V PD contracts

Compared with CYPD8125-48LDXI, CYPD8225-97BZXI offers identical functionality with superior thermal performance, while UPD350A-EZ-TR sacrifices EPR, dual-port capability, and integration to reduce cost - making it unsuitable for notebook docking or Thunderbolt companion use cases.

Availability

CYPD8125-48LDXI is available at Aetrix Electronics and suitable for notebook docking stations, USB-C laptop charging hubs, Thunderbolt™ 4 add-in cards, and industrial embedded USB-C interface modules requiring stable component supply across multi-year production cycles.

Supply support for CYPD8125-48LDXI 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 MCUs, and USB-C/Power Delivery solutions - with over 20 years of silicon leadership in high-reliability mixed-signal ICs.

CYPD8125-48LDXI belongs to the EZ-PD™ CCG8 family - designed specifically for space-constrained, thermally demanding dual-port USB-C systems requiring EPR compliance, secure firmware execution, and minimal external component count.

FAQ

Does CYPD8125-48LDXI support USB PD 3.1 Extended Power Range (EPR) without external components?

Yes. The device natively supports EPR up to 28 V using its integrated high-voltage LDO and VBUS sensing circuitry. No external voltage dividers, level shifters, or auxiliary regulators are required for EPR negotiation or monitoring - confirmed in Section 6.6 of datasheet 002-33920 Rev. *G.

What is the maximum continuous current rating for the integrated VCONN FET drivers?

The integrated VCONN FETs are rated for 300 mA continuous current per channel (CC1/VCONN1 and CC2/VCONN2), sufficient to power full-featured USB-C EMCA cables with e-marker chips - verified in Table 6-12 (Analog Peripherals) and Figure 5-1 (Application Diagram) of the datasheet.

Can CYPD8125-48LDXI operate without an external crystal or oscillator?

Yes. It contains a fully integrated precision oscillator meeting USB PD timing jitter requirements (<±1.5% deviation). This eliminates the need for external crystals, reducing BOM cost and PCB footprint - specified in Section 2.2.2 (Clock System) and validated in production test reports.

Is Fast Role Swap (FRS) supported in hardware or does it require external circuitry?

FRS signaling is handled in hardware by the USB PD subsystem, but meeting PD specification timing requires an external load switch with sub-200 ns turn-on response on the VBUS provider path - as explicitly stated in Note [1] on page 1 of the datasheet and detailed in Application Note AN229872.

CYPD8125-48LDXI Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: EZ-PD™ CCG8

Package/Case:: 48-UFQFN Exposed Pad

Packaging:: Tray

Product Status:: Active

Programmable:: -

Applications:: USB Type C

Core Processor:: ARM® Cortex®-M0+

Program Memory Type:: FLASH (256kB), ROM (96kB)

Controller Series:: EZ-PD™

RAM Size:: 32K x 8

Interface:: I2C, SPI, UART, USB

Number of I/O:: 26

Voltage - Supply:: 2.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-QFN (6x6)

CYPD8125-48LDXI FAQ

1.How can I place an order for CYPD8125-48LDXI through Aetrix?

Please submit a Request for Quotation (RFQ) for CYPD8125-48LDXI 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 CYPD8125-48LDXI reliable?

The price and inventory of CYPD8125-48LDXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD8125-48LDXI is usually 5 days.

3.What payment methods are accepted for CYPD8125-48LDXI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD8125-48LDXI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CYPD8125-48LDXI?

CYPD8125-48LDXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CYPD8125-48LDXI 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 CYPD8125-48LDXI?

For technical support, including CYPD8125-48LDXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD8125-48LDXI requirements.

6.How does Aetrix verify that CYPD8125-48LDXI is sourced from the original manufacturer or authorized distributors?

All CYPD8125-48LDXI 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 CYPD8125-48LDXI meets industry standards.

7.What is the process for return or replacement of CYPD8125-48LDXI?

All CYPD8125-48LDXI units undergo pre-shipment inspection (PSI). If there is an issue with CYPD8125-48LDXI, 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 CYPD8125-48LDXI part is unused and in its original packaging.

Return procedure for CYPD8125-48LDXI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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