Infineon Technologies CYPD8125-48LDXIT

Overview

CYPD8125-48LDXIT 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 notebook USB-C docking stations requiring full PD 3.1 compliance and Fast Role Swap.

For engineers reviewing the CYPD8125-48LDXIT datasheet, CYPD8125-48LDXIT pinout, CYPD8125-48LDXIT application, or CYPD8125-48LDXIT equivalent, key selection criteria include EPR voltage capability (28 V), dual-port PD protocol stack support, integrated VBUS overvoltage/overcurrent protection thresholds, and hardware-controlled FRS readiness without external timing components.

Technical Context

The CYPD8125-48LDXIT implements two independent USB PD subsystems - one per Type-C port - each supporting full PD 3.1 message handling, Extended Data Messaging, and Fast Role Swap coordination via dedicated hardware state machines. Its integrated 48-MHz Cortex-M0+ executes firmware with deterministic timing for PD negotiation, while the programmable TCPWM blocks (4×) and SCBs (4× configurable as I²C/SPI/UART) enable real-time CC line monitoring and alternate-mode handshaking.

Analog integration includes a 12-bit SAR ADC, high-voltage LDO (operable up to 28 V), VBUS current sense amplifier (5-mΩ shunt compatible), and dual VCONN FETs with OCP. The device operates across VSYS (2.8–5.5 V) and VBUS (4–28 V), with deep-sleep mode enabled by wakeup interrupt controller (WIC) and brown-out detection (BOD) for robust power sequencing.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYPD8125-48LDXIT, CYPD8225-97BZXIT offers identical electrical and functional behavior with packaging optimized for volume production, whereas UPD358A-EVAL lacks EPR support, dual-port hardware, and integrated analog blocks - making it unsuitable for notebook docking or Thunderbolt host use cases requiring 28 V operation and FRS.

Availability

CYPD8125-48LDXIT is available at Aetrix Electronics and suitable for notebook docking stations, Thunderbolt host platforms, enterprise charging hubs, and industrial embedded USB-C hubs requiring stable component supply, long-term lifecycle support, and certified EPR compliance.

Supply support for CYPD8125-48LDXIT 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 ICs, and USB-C/PD solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.

The EZ-PD™ CCG8 product line delivers single-chip, dual-port USB Type-C controllers targeting high-reliability computing platforms - designed specifically for notebooks, docking stations, and Thunderbolt hosts needing full PD 3.1 EPR support and hardware-accelerated protocol handling.

FAQ

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

Yes. The device natively supports EPR up to 28 V through integrated high-voltage analog blocks, including the 28-V LDO, VBUS sense amplifier, and fault-protected gate drivers - no external voltage scaling or protection ICs are required for EPR operation.

What is the function of the integrated dead-battery Rd termination?

The integrated Rd resistor activates automatically when VSYS drops below 2.8 V, allowing the USB-C port to detect UFP attachment and initiate power negotiation even with a fully depleted system battery - critical for "cold-start" docking scenarios.

Is Fast Role Swap (FRS) implemented entirely in hardware?

FRS timing-critical functions - including CC line reconfiguration, VCONN toggle, and VBUS discharge signaling - are handled by dedicated hardware state machines. However, an external FRS-capable load switch on the VBUS provider path is required to meet PD specification timing constraints.

How does the cryptographic accelerator support secure firmware updates?

The on-die crypto block performs SHA-256 hash verification and AES-128 decryption of signed firmware images in ROM-bootloader context. Validated images are loaded into SRAM and executed only after signature and integrity checks pass - preventing unauthorized or corrupted firmware execution.