NXP Semiconductors PTN5100BSMP

Overview

PTN5100BSMP from NXP Semiconductors is a single-port USB Type-C Power Delivery PHY and Protocol IC that implements the physical layer (BMC/4B5B/CRC), protocol layer (packet assembly/disassembly, retries, resets), and Type-C configuration channel (CC1/CC2) functions for host or device-side PD implementations. It supports Provider (P), Consumer (C), and Dual-Role (P/C, C/P) operation with register- and NVM-programmable DFP/UFP/DRP roles, VCONN low-RON switching (1 A, 2.7–5.5 V), and operates from VDD (3.3 V ±10%) or VBUS (up to 25 V) - enabling Dead Battery mode in notebooks and Chromebooks.

For engineers reviewing the PTN5100BSMP datasheet, PTN5100BSMP pinout, PTN5100BSMP application, or PTN5100BSMP equivalent, key selection considerations include its dual SPI/I2C interface (pre-configured at factory), CC orientation detection via CC_ORIENT pin, programmable forward/reverse current protection on VCONN, open-drain FET enable outputs (EN_USBSRC/EN_USBFET1/EN_USBFET2), and HVQFN20 package compatibility with thermal pad grounding requirements.

Technical Context

PTN5100BSMP integrates a full USB PD PHY (slew-controlled BMC encoding/decoding, 4B5B line coding, CRC generation/checking) and protocol engine (SOP/SOP'/SOP'' handling, Good CRC response, automated retries, hard/cable reset management) tightly coupled with a Type-C CC block supporting Rp/Rd programmability, plug orientation detection, and debug accessory identification. Its autonomous CC front-end enables dead-battery UFP behavior without MCU intervention.

The IC features three open-drain gate drivers (EN_USBSRC, EN_USBFET1, EN_USBFET2) for external PMOS power path control, a 1 A VCONN switch with register-programmable forward/reverse current protection, and dual-domain power architecture: VDD/VIO for core/IO logic and VBUS for dead-battery operation. Interface selection (SPI or I2C) is factory-set via NVM; I2C supports three slave addresses (0xE0/0xE4/0xE8 write).

Key Specifications

Pinout & Package

HVQFN20 package (SOT917-4) with 4 mm × 4 mm body, 0.5 mm pitch, and exposed center ground pad requiring direct soldering to PCB ground plane and thermal vias for reliable operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C PD PHY and protocol applications.

Compared with TI TUSB1146 and STUSB4500, PTN5100BSMP uniquely combines full PD PHY/protocol offload, integrated 1 A VCONN switching with reverse current protection, and three dedicated open-drain FET gate drivers - enabling complete single-chip USB-C port control in resource-constrained computing platforms without external power path logic.

Availability

PTN5100BSMP is available at Aetrix Electronics and suitable for notebook PCs, USB-C docking stations, and Chromebook peripheral hubs requiring stable component supply, long-term lifecycle support, and compliance-certified USB Type-C PD implementation.

Supply support for PTN5100BSMP 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer electronics, with leadership in USB, NFC, and secure authentication technologies.

PTN5100BSMP belongs to NXP's USB Type-C Power Delivery PHY and Protocol IC product line, designed specifically to offload timing-critical PD physical and protocol layer functions from host MCUs in space-constrained computing platforms.

FAQ

What is the primary function of the PTN5100BSMP in a USB-C system?

The PTN5100BSMP serves as a dedicated USB Type-C Power Delivery PHY and Protocol IC, implementing the physical layer (BMC encoding/decoding, 4B5B line coding, CRC), protocol layer (SOP packet handling, retries, resets), and Type-C configuration channel (CC1/CC2) functions. It works alongside an external policy controller MCU to deliver full PD functionality while offloading timing-critical tasks - enabling robust, standards-compliant USB-C port implementation in notebooks, docks, and mobile devices. The PTN5100BSMP itself does not contain a policy engine.

Does PTN5100BSMP support Dead Battery operation, and how is it implemented?

Yes, PTN5100BSMP supports Dead Battery (DB) operation by drawing power directly from VBUS (up to 25 V) instead of VDD. When VDD is absent, the IC remains fully functional - maintaining CC detection, orientation reporting via CC_ORIENT, VCONN switching, and SPI/I2C communication - allowing the host system to boot and negotiate power contracts even with zero battery charge. This capability is critical for notebook and Chromebook platforms requiring guaranteed USB-C port responsiveness during DB conditions. The PTN5100BSMP handles VBUS-to-core power conversion internally.

How is the interface type (SPI vs. I2C) selected for PTN5100BSMP?

The interface type for PTN5100BSMP - SPI or I2C - is factory pre-configured in non-volatile memory (NVM) and cannot be changed in-system. The selection is fixed at manufacturing based on orderable part number: PTN5100BSMP is configured for SPI interface, while PTN5100ABSMP is configured for I2C. Both variants share identical pinout and functionality except for interface mode. Users must select the correct variant at procurement; no runtime reconfiguration or software toggle is supported. The PTN5100BSMP datasheet confirms SPI mode support up to 30 MHz.

What protection features does PTN5100BSMP provide on its CC and VBUS pins?

PTN5100BSMP provides 5.5 V tolerance on CC1 and CC2 pins, and 28 V tolerance on the VBUS pin and VBUS power path MOSFET enable pins (EN_USBSRC/EN_USBFET1/EN_USBFET2). It also includes back-current protection on all pins when unpowered, ensuring no leakage paths compromise system integrity during power sequencing. These ratings allow direct connection to USB-C connectors without external TVS diodes for basic ESD suppression - though NXP recommends PESD5V0S1USF-type protection for cable plug/unplug transients. All protection features are inherent to the PTN5100BSMP silicon design.

Can PTN5100BSMP operate as both a USB-C provider and consumer on the same port?

Yes, PTN5100BSMP supports Dual-Role Power (DRP) operation - functioning as either Provider (P), Consumer (C), or Provider/Consumer (P/C) on a single port - through NVM and register programming. Its DRP capability includes configurable Rp/Rd pull-up/down on CC pins, orientation-aware CC routing, and coordinated control of EN_USBSRC and EN_USBFET1/2 outputs to manage bidirectional VBUS power flow. This enables dynamic role swapping in devices like laptops and docks without hardware modification. The PTN5100BSMP implements the physical and protocol layers required for DRP; the policy decision logic resides in the external MCU.