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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Supply Controllers, Monitors

STMicroelectronics ST-ONEHP

Name: ST-ONEHP
Brand: STMicroelectronics
SKU: ST-ONEHP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ST-ONEHP

Manufacturer:: STMicroelectronics

Category:: Power Supply Controllers, Monitors

Package:: 36-BSOP (0.295", 7.50mm Width)

Datasheet:: ST-ONEHP.pdf

Description:: Linear IC's

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ST-ONEHP from STMicroelectronics is a fully integrated digital USB-PD 3.1 EPR controller embedding an ARM® Cortex®-M0+ MCU (64 kB flash, 8 kB SRAM), ZVS non-complementary active clamp flyback controller, synchronous rectifier driver, reinforced galvanic isolation channel, and USB-PD PHY - all in one package. It delivers up to 240 W output with <100 mW standby power, supports 800 V HV startup, and enables compact high-density chargers for laptops and tablets.

For engineers reviewing the ST-ONEHP datasheet, ST-ONEHP pinout, ST-ONEHP application, or ST-ONEHP equivalent, this device serves as a system-level solution for EPR-compliant USB-PD power supplies requiring coordinated primary-side ZVS control, secondary-side digital regulation, isolated bidirectional communication, and integrated Type-C interface management.

Technical Context

The ST-ONEHP implements a non-complementary ZVS active clamp flyback topology with real-time adaptive deadtime (programmable via R_DT) and leading-edge blanking (R_LEB), enabling >94% peak efficiency at 100–240 W. Its dual-domain architecture separates primary-side gate drive (HON/LON), current sensing (ISEN), and OVP (OVP pin) from secondary-side USB-PD protocol handling (CC1/CC2), voltage/current monitoring (SVCC/CSP/CSM), and SR control (SRGD/SRVDS).

The embedded 126.7–137.3 MHz master clock drives deterministic timing for PWM, burst mode entry (<60 µs IsoPWM absence), and ADC sampling (12-bit, ±1% gain error). Reinforced isolation meets IEC 62368-1 with 4 kV transient, 9.6 kV/1 min hipot, and 8 mm creepage/clearance - validated across both primary and secondary domains.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	ARM Cortex-M0+, 64 kB flash + 8 kB boot ROM + 8 kB SRAM - hosts full USB-PD 3.1 EPR stack and digital power control firmware
USB-PD Interface	Fully integrated PHY with 24 V tolerant CC1/CC2 pins, AVS support, electronically marked cable management - eliminates external transceiver
Isolation	Reinforced galvanic isolation: 4 kV transient, 9.6 kV/1 min hipot, 6.4 kV/1 s production test - certified per IEC 62368-1
Startup & Sensing	800 V HV pin (V_HV) with brown-in/out detection (100–122 V_pk), X-cap discharge (45 V residual, 64 ms detection)
Gate Drivers	Primary HON/LON (5 V logic, 4 mA sink/source); Secondary SRGD (11 V max drive, 0.6 A sink, 40 ns rise time); ORGD load switch driver (5–7 V above V_OSSNS)
ADC & Sensing	12-bit SAR ADC with ±1% gain error, 50 mV full-scale current sense (CSP–CSM), 6/12/24 V selectable voltage range (SVCC/VOSNS)
Thermal & Safety	Junction temp: –40 to +125 °C; R_{th j-amb} = 65 °C/W; UL 1577 certified (3770 V_rms isolation)

Pinout & Package

ST-ONEHP is housed in a 36-pin eWLB (embedded Wafer Level Ball Grid Array) package with 0.4 mm pitch, optimized for high-voltage spacing and thermal dissipation. Pin 1 (HV) withstands 800 V; pins 2–4 are internal spacers for creepage; primary and secondary grounds (PGND/SPGND/SSGND) are segregated to maintain isolation integrity.

Pin/Terminal	Circuit Role	Design Meaning
HV	High-voltage startup & AC sensing input	Connects to AC bridge via diodes; enables 800 V-rated startup, brown-in/out detection, and X-cap discharge control
HON / LON	Primary-side gate drive outputs	Drive high-side and low-side FETs in active clamp flyback; support anti-cross-conduction logic and programmable deadtime
SRGD / SRVDS	Synchronous rectifier gate drive & drain sense	SRGD drives sync FET gate; SRVDS senses drain voltage through cascode clamp to protect IC from overvoltage
CC1 / CC2	USB Type-C configuration channel I/O	Direct USB-PD 3.1 EPR communication interface; support alternate functions (I2C/UART/GPIO) when firmware-configured
CSP / CSM	Differential output current sense inputs	Measure load current via external shunt; full-scale range 25 mV, CMRR ≥50 dB at 100 kHz–1 MHz
SVCC / VOSNS	Output voltage sense & bleeder path	SVCC monitors VBUS ≤22.5 V; VOSNS connects to VBUS via clamping circuit for regulated bleeder current (7–20 mA)

Key Features

Feature	Design Value
ZVS Active Clamp Control	Non-complementary timing with adaptive deadtime ensures zero-voltage switching across full load range, reducing switching losses and EMI
Integrated USB-PD 3.1 EPR Stack	Pre-loaded firmware handles EPR negotiation, AVS, cable marking, and power role swapping - no external MCU or protocol IC required
Reinforced Dual-Channel Isolation	Embedded galvanic barrier supports simultaneous power telemetry and USB-PD messaging with 4 kV transient immunity and 1 MHz data rate
Ultra-Low Standby Power	Active X-cap discharge + deep sleep mode (1.4 mA @ SVCC=5 V) achieves <100 mW no-load consumption per IEC 62368-1
Programmable Voltage/Current Sensing	Configurable ADC ranges (6/12/24 V for SVCC/VOSNS; 25 mV for CSP–CSM) enable single IC support for 5 V to 48 V output designs

Applications

USB-PD 3.1 EPR Laptop Charger

Multi-Port GaN Desktop Adapter

Use Scenario: 140 W USB-C PD charger for ultrabooks with variable output (15–28 V) and AVS support.

IC Role / Device Role / Timing Role: ST-ONEHP acts as the system orchestrator - managing ZVS flyback timing, synchronous rectification, USB-PD negotiation, and isolated telemetry between primary and secondary sides.

Use Value: Enables 30% smaller magnetics vs. conventional controllers by supporting >300 kHz operation with MasterGaN, while maintaining <100 mW standby.

Use Scenario: 240 W desktop adapter with dual USB-C ports, one supporting EPR (28 V/5 A), the other standard PD (20 V/5 A).

IC Role / Device Role / Timing Role: ST-ONEHP controls the main EPR channel; its GPIO0/GPIO1 and configurable CC pins allow firmware-managed port arbitration and dynamic power sharing.

Use Value: Eliminates need for separate PD controllers and isolated communication ICs - reduces BOM count by ≥4 components per port.

USB-C Power Bank with EPR Output

Industrial USB-PD Test Fixture

Use Scenario: Portable 100 Wh power bank delivering 140 W EPR output to replace AC adapters in field service tools.

IC Role / Device Role / Timing Role: ST-ONEHP manages battery-to-VBUS conversion using active clamp flyback, monitors output current/voltage, and enforces EPR safety limits (e.g., cable marking verification).

Use Value: Integrated OVP/OCP/OTP protection plus 12-bit ADC enables precise compliance testing without external sensors or microcontrollers.

Use Scenario: Lab-grade USB-PD compliance tester validating EPR source behavior, cable e-marker handshake, and AVS transitions.

IC Role / Device Role / Timing Role: ST-ONEHP operates in programmable test mode - exposing raw CC line states, VBUS slew rates, and protocol timing via UART/I2C for automated measurement.

Use Value: On-chip USB-PD PHY and isolated telemetry allow direct capture of physical-layer events (e.g., CC wake-up threshold at 2.6 V ±0.1 V) without signal degradation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB-PD 3.1 EPR controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MPQ4282-AEC1	Single-domain buck-boost controller with external PD PHY; no integrated MCU or isolation; requires companion IC for EPR negotiation	Limited to ≤100 W; lacks ZVS active clamp and synchronous rectification drivers	Choose for cost-sensitive, lower-power applications where discrete PD implementation is acceptable
INN3379C-H302	Integrated flyback controller with digital control but no USB-PD PHY or ARM core; relies on external MCU for PD stack	No native EPR/AVS support; requires external isolation and CC interface components	Choose when leveraging existing MCU infrastructure and needing only analog flyback control with basic PD 3.0

Compared with MPQ4282-AEC1 and INN3379C-H302, ST-ONEHP uniquely integrates ARM-based firmware execution, reinforced isolation, and full EPR protocol handling - reducing system complexity, component count, and validation effort for >100 W USB-C chargers.

Availability

ST-ONEHP is available at Aetrix Electronics and suitable for USB-PD 3.1 EPR laptop chargers, multi-port GaN desktop adapters, and industrial USB-C test fixtures requiring stable component supply, long-term lifecycle support, and certified safety compliance.

Supply support for ST-ONEHP 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade solutions since 1987.

ST-ONEHP belongs to the ST-ONE® family - ST's dedicated platform for digitally controlled, USB-PD–integrated power converters targeting ultra-compact, high-efficiency AC-DC adapters and chargers compliant with USB-PD 3.1 EPR.

FAQ

What is the maximum output power supported by ST-ONEHP in a typical design?

ST-ONEHP supports up to 240 W output in reference designs using MasterGaN power stages and planar transformers. Its ZVS active clamp architecture, 300+ kHz operation capability, and integrated synchronous rectifier driver enable high power density without external controllers. Real-world performance depends on transformer design, thermal layout, and MOSFET selection - ST reference design AN5922 achieves 210 W at 94.2% peak efficiency.

Does ST-ONEHP require external firmware programming for USB-PD 3.1 EPR operation?

No - ST-ONEHP ships with pre-loaded firmware that fully implements USB-PD 3.1 EPR, including AVS, electronically marked cable management, and power role swapping. Users can personalize device configuration (e.g., voltage setpoints, current limits, wake-up thresholds) via UART or I2C without modifying the core PD stack. Firmware updates are supported through the GPIO0 boot interface.

How does the reinforced galvanic isolation in ST-ONEHP differ from standard optocoupler-based solutions?

ST-ONEHP uses an embedded capacitive isolation barrier rated for 4 kV transient and 9.6 kV/1 min hipot - exceeding IEC 62368-1 requirements. Unlike optocouplers, it provides dual-channel, bidirectional communication (power telemetry + PD messaging) at 1 MHz with <100 ns latency, no LED aging, and guaranteed lifetime reliability. The isolation is monolithically integrated, eliminating external components and PCB space.

Can ST-ONEHP be used in non-USB-PD applications such as constant-voltage/constant-current LED drivers?

Yes - ST-ONEHP's ARM Cortex-M0+ core and configurable peripherals allow repurposing for non-PD applications. Its voltage/current sensing, PWM generation, and gate drivers support CV/CC LED drivers, industrial SMPS, or battery chargers. However, USB-PD–specific pins (CC1/CC2) and firmware features remain inactive unless enabled; users must develop custom firmware and disable PD stack initialization during boot.

ST-ONEHP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 36-BSOP (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Active

Programmable:: -

Applications:: Digital Power Controller

Voltage - Input:: -0.3V ~ 3.6V

Voltage - Supply:: 6.5V ~ 16V

Current - Supply:: 2.8 mA

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 36-SSOP

ST-ONEHP FAQ

1.How can I place an order for ST-ONEHP through Aetrix?

Please submit a Request for Quotation (RFQ) for ST-ONEHP 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 ST-ONEHP reliable?

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

3.What payment methods are accepted for ST-ONEHP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST-ONEHP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ST-ONEHP?

ST-ONEHP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ST-ONEHP 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 ST-ONEHP?

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

6.How does Aetrix verify that ST-ONEHP is sourced from the original manufacturer or authorized distributors?

All ST-ONEHP 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 ST-ONEHP meets industry standards.

7.What is the process for return or replacement of ST-ONEHP?

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

Return procedure for ST-ONEHP:

1.Submit a request within 90 days.

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

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