Monolithic Power Systems Inc. HR1215GY-0000-P

Overview

HR1215GY-0000-P from Monolithic Power Systems is a digitally configurable, multi-mode PFC and current-mode LLC combo controller in SOIC-20 packaging. It integrates hybrid CCM/DCM PFC control (up to 250 kHz), current-mode LLC control (up to 500 kHz), adaptive dead-time adjustment, capacitive mode protection, and an internal high-voltage start-up/X-capacitor discharge circuit. It enables high-efficiency AC-DC power supplies for desktop PCs, gaming PSUs, and LCD TV power systems.

For engineers reviewing the HR1215GY-0000-P datasheet, HR1215GY-0000-P pinout, HR1215GY-0000-P application, or HR1215GY-0000-P equivalent, key selection considerations include its UART-configurable burst/skip modes, digital average current PFC architecture, zero-voltage switching guarantee without shutdown during X-cap discharge, and integrated 600V high-side gate driver with bootstrap diode.

Technical Context

The HR1215GY-0000-P implements dual digital control loops: a patented digital average current PFC controller supporting hybrid CCM/DCM operation to optimize peak MOSFET current at heavy loads and reduce switching frequency at light loads; and a current-mode LLC controller with adaptive dead-time adjustment (ADTA), capacitive mode protection (CMP), and three load-dependent operating modes (steady-state, skip, burst) for stability and transient response.

Its embedded MTP memory (256 bytes, 1,000 write cycles) stores configuration parameters loaded at startup, while the half-duplex UART interface (internal 1.6 kΩ pull-up, 3.3 V referenced) enables real-time tuning via MPS GUI-shared with HR1211-without requiring external programming hardware.

Key Specifications

Pinout & Package

HR1215GY-0000-P is housed in a SOIC-20 package with exposed pad thermal enhancement. Pin functions are validated per MPS HR1215 Rev. 1.0 datasheet (pp. 4–5), including dedicated high-voltage (HV), bootstrap (BST), and half-bridge current sense (CSHB) terminals for resonant topology integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PFC+LLC controller applications.

Compared with UCC28070DWR and ICE5QSAG, HR1215GY-0000-P delivers full digital integration of PFC and LLC control, eliminates external components for X-cap discharge and start-up, and provides real-time configurability-enabling faster design iteration, higher power density, and compliance with stringent acoustic and efficiency standards.

Availability

HR1215GY-0000-P is available at Aetrix Electronics and suitable for desktop PC ATX power supplies, gaming PSUs, and LCD TV power systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for HR1215GY-0000-P 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with over two decades of innovation in DC-DC converters, LED drivers, motor drivers, and AC-DC controllers.

The HR1215 product line targets high-efficiency, digitally configurable AC-DC power conversion for computing, consumer, and industrial applications-designed to replace multi-chip solutions with single-package integration and GUI-based tuning.

FAQ

What is the purpose of the HV pin on HR1215GY-0000-P?

The HV pin serves dual functions: it provides a 700 V-rated internal high-voltage current source for IC start-up (eliminating external start-up resistors), and acts as a regulated X-capacitor discharge path during AC input dropout-meeting IEC62368 safety requirements without additional components. Typical discharge current is 7 mA at 25 °C.

How does HR1215GY-0000-P achieve zero-voltage switching in LLC operation?

It uses adaptive dead-time adjustment (ADTA) that monitors dV/dt on the SW pin (minimum detectable slew rate: 85 V/µs) to dynamically adjust gate timing, ensuring turn-on occurs only after resonant tank voltage crosses zero. Capacitive mode protection (CMP) further prevents hard-switching by terminating HS/LS gate drive if current polarity indicates capacitive conduction.

Can HR1215GY-0000-P operate without an external microcontroller?

Yes. The device operates autonomously using factory-default or MTP-stored configurations. The UART interface is optional for tuning-used only during development or field calibration via MPS GUI. No host MCU is required for basic PFC+LLC functionality, start-up, or protection.

What protection features are implemented on the CSHB pin?

The CSHB pin enables two critical protections: over-current protection (OCP) triggers when sensed voltage exceeds 1.5 V, initiating auto-restart or latch-off; and capacitive mode protection (CMP) compares CSHB voltage against polarity references (±80 mV typical) to terminate HS/LS gate drive if current reverses direction-preventing destructive hard-switching in LLC resonant tanks.

Is the HR1215GY-0000-P pin-compatible with other MPS combo controllers?

No. HR1215GY-0000-P has a unique SOIC-20 pinout optimized for its dual-controller architecture, including dedicated HV, BST, CSHB, and UART pins. It is not pin-compatible with HR1211 (same GUI but different pin mapping) or earlier MPS PFC-only controllers like MPF32080.

What is the maximum recommended PCB temperature rise for SOIC-20 thermal design?

With θJA = 65 °C/W on a 4-layer JEDEC board, the maximum allowable power dissipation at 25 °C ambient is 1.92 W. To maintain junction temperature ≤125 °C, PCB copper area and airflow must limit case-to-ambient temperature rise to ≤(125 − 25) / 65 ≈ 1.54 °C/W - requiring ≥2 in² of 2-oz copper pour under the exposed pad and forced air cooling above 1.2 W continuous dissipation.