Power your devices through universal USB-C 48 V rail，Hynetek brings new USB PD3.2 DRP Controller

With increasing demand for high-power fast charging in electronic devices, the USB Power Delivery (USB PD) protocol has become the most widely employed charging protocol for modern smart devices. Thanks to mechanisms such as Programmable Power Supply (PPS) and configurable voltage/power output, the USB PD 3.1 specification already supports up to 240 W of power delivery, while the latest USB PD 3.2 further refines power levels to enable more flexible voltage output control.

The introduction of the Extended Power Range (EPR) specification, in particular, allows USB Type-C ports to support voltages up to 48 V, driving a full transition to USB power delivery for devices such as power tools and laptop computers. As a result, higher expectations have been placed on the reliability and safety of power delivery chips.

HUSB253

To meet the power demands of next-generation high-power devices, Hynetek has launched the HUSB253, a new USB PD Dual-Role Port (DRP) controller compliant with the USB PD 3.2 specification. This chip supports the EPR under USB PD 3.2, enabling up to 240 W power delivery and operating voltages as high as 48 V, with key pins rated up to 60 V. The HUSB253 intelligently adjusts power paths and protection strategies in real-time during PD communication, enabling smarter bidirectional power management. It provides a reliable power solution for the high-voltage USB Type-C devices, including:

• Power tools

• Power banks

• Laptops & tablets

• E-Bikes

• Robotics

• Home appliances

Figure 1: Photo of HUSB253 chip

FEATURES

The HUSB253 implements multiple design features for the high power applications including:

• USB Type-C DRP with PD 3.2 protocol supported

• Bidirectional PD protocol for USB Type-C with 48 V EPR FPDO and EPR AVS supported

• Embedded DPDM PHY to support multiple proprietary protocols including QC2 to QC5, AFC, FCP, SCP, UFCS

• Chunking messages supported for VDMs and EPR communication

• Integrated N-MOSFET gate driver with soft-start

• Cable oriented detection and VCONN source integrated

• Integrated Dead Battery function for power requesting as a sink device

• Hardware protections for OCP, OVP, OTP, TSD

• Integrated 11-bit ADC

• Up to 60 V tolerance voltage at VIN pin and VBUS pin for maximum output voltage to 48 V

• Programmable sleep mode to save power as low as 2.5 mW when attached

• Internal power discharger to minimize the component count

In terms of fast charging protocols supported, the HUSB253 can support any type of Power Data Objects (PDOs) such as SPR FPDO, SPR PPS APDO, SPR AVS APDO, EPR FPDO and EPR AVS APDO with programmable voltage and current Power to meet diverse application requirements from 15 W wireless charging pads to 240 W power tools. Additionally, its   programmable DPDM PHY module offers compatibility with multiple proprietary fast-charging protocols, including QC2.0, QC3.0, QC3+, AFC, FCP, SCP, UFCS, and Divider 3 mode, delivering a seamless interoperable solution for both legacy and emerging charging protocols.

Figure 2: HUSB253 240-W PDO Configuration

The HUSB253 integrates essential hardware protection features including Over-Current Protection (OCP), Fast Over-Current Protection (FOCP), Over-Voltage Protection (OVP), Over-Temperature Protection (OTP), and Thermal Shutdown (TSD). Additionally, the chip incorporates an N-MOSFET gate driver with soft-start capability for smooth power path switching, and features an embedded 11-bit resolution ADC for real-time voltage and current monitoring. With its built-in dead battery function, the device ensures reliable power request capability even with completely depleted batteries.

For the pin configuration, the HUSB253 provides up to 24 pins including power delivery interfaces (VIN, VBUS, and VCONN pins) for voltage detection and power transfer, along with multiplexed GPIO, UART, I²C, and ADC channels. The device offers multiple configurable I/Os for versatile system communication and control, while integrating specialized pins like VFB/VSNS for accurate voltage regulation and OPTO for opto-coupler feedback with isolated ACDC controllers. This comprehensive design enables high-precision power management across various system topologies.

Figure 3: HUSB253 Pinout Configuration

The HUSB253 comes in a compact 4 mm × 4 mm QFN-24L package with an ultra-low sleep mode power consumption of just 2.5 mW, making it ideal for portable power supplies, power tools, and various high-power mobile devices. Thanks to its versatile compatibility with OPTO, FB control, and I²C control application circuits, designers can flexibly choose among external compensation networks or digital management via the MCU according to different application scenarios, thereby achieving optimal balance between power delivery and system efficiency.

Figure 4: HUSB253 Typical Application Circuit

Below figure shows the schematic design diagram of Hynetek's 240W solution for 6-12 cells batteries, developed based on the HUSB253 in combination with TI's BQ25756 or BQ25758 buck-boost chargers.

Figure 5: Schematic Design of 240-W Solution Using HUSB253 and BQ25756/BQ25758

In this high-cell-count 240 W bidirectional buck-boost solution, the HUSB253 serves as the USB PD controller, handling port current sampling, PDO parsing, and power negotiation: It retrieves the connected power source's capabilities via the CC pin while monitoring bidirectional current in real-time. In Source (discharge) mode, the HUSB253 configures the BQ25756 or BQ25758 via I²C interface, integrating OVP/OCP/short-circuit protection to ensure 240 W output safety. In Sink (charge) mode, it negotiates voltage with the adapter and coordinates with the BQ25756 or BQ25758 via I²C interface to set charging power and protection parameters. The BQ25756 or BQ25758 controls the bidirectional buck-boost power stage, working closely with the HUSB253 to enable efficient energy transfer between the battery pack and USB Type-C devices. If you are interested in the HUSB253 evaluation board with BQ25756 or BQ25758, you can contact us via email below.

Hynetek has also simultaneously released a development board based on the HUSB253 to facilitate debugging.

Figure 6: HUSB253 Development Board

Hynetek also provides a 240 W USB PD solution from AC power adapter side to device side. It includes the 240 W PD3.2 EPR source controller HUSB368, the USB eMarker chip HUSB332E for 240 W USB Type-C cable, and the 240 W PD3.2 EPR DRP controller HUSB253. Additionally, the PFC and AHB flyback combo controller HP1020 is coming in the short term. It provides the most efficient solution for 240 W USB PD power adapter.

Figure 7: Block diagram of the 240-W integrated solution

The USB PD3.2 EPR ecosystem is evolving toward higher voltages, greater power rating, and smarter functionality. In line with this trend, highly integrated chip solutions that combine protocol processing and power control capabilities will become designers' preferred choice for building efficient and high-reliability systems.

Hynetek's newly launched HUSB253 complies with the latest USB PD3.2 specification, supporting input and output voltages of up to 48 V and flexible source/sink role switching. It also incorporates comprehensive hardware protections and monitoring features. This chip enhances high-power delivery capability through a single interface, accelerating the adoption and advancement of USB Type-C ecosystems across more applications.