HR1200

HR1200

NOT RECOMMENDED FOR NEW DESIGNS

High-Performance Digital PFC+LLC Combo Controller

ALTERNATIVE PART

NRFND Datasheet

HR1200 continues to be in production for existing customers. Please consider this alternative for new designs:

HR1203

High-Performance Digital PFC + LLC Combo Controller

Features & Benefits

General System Features

Meets EuP Lot 6 and COC Version 5 Tier 2 Specifications
HV Current Source for Start-Up
Smart X-Cap Discharger
Standard I²C Interface
1k EEPROM to Store Parameters
User-Friendly GUI for Digital PFC

PFC Controller

High Efficiency from Light Load to Full Load by CCM/DCM Multi-Mode Control
High PF Due to Patented Input Capacitor Current Compensation
Programmable Filter for Noise Suppression
Programmable Frequency Jittering
Programmable Brown-In and Brown-Out
Programmable Soft Start (SS)
Cycle-by-Cycle Current Limit
Open-Loop Protection (OLP)

LLC Controller

600V High-Side Gate Driver with Integrated Bootstrap Diode and High dV/dt Immunity
Adaptive Dead-Time Adjustment of HB LLC with Minimum and Maximum Limit
Burst Mode Switching
Safe Start-Up in Case of System Fault
Two-Level Over-Current Protection (OCP)
Latch Shutdown Protection
Over-Temperature Protection (OTP)
Capacitive Mode Protection

… and many more!

Description

The HR1200 integrates a digital PFC controller and a half-bridge resonant controller into a single chip. It uses very low power at no-load or ultra-light load, making it compliant with Energy Using Product Directive (EuP) Lot 6 and Code of Conduct Version 5 Tier 2 specifications. The PFC of the HR1200 employs a patented average current control scheme, which can operate in CCM and DCM multi-mode according to the instantaneous condition of the input voltage and output load. The IC exhibits excellent efficiency and high PF at light load. When operating in CCM, the controller can be used in applications up to 500W with minimal board size limitations. The performance of the PFC can be optimized by programming multiple parameters through an I2C GUI. Programming is completed either by the factory or by the customer using a detailed user guide. The half-bridge LLC converter achieves high efficiency with zero-voltage switching (ZVS). The HR1200 implements an adaptive dead-time adjustment (ADTA) function, so the LLC converter can achieve easily ZVS from heavy load to light load. In addition, the HR1200 can prevent the LLC converter from operating in capacitive mode, making it more robust and easier to design. The HR1200 integrates a high-voltage (HV) current source inside the IC for start-up, eliminating the traditional start-up resistor or external circuit. When the AC input is removed, the HV current source functions as an X-cap discharger, eliminating the need for a resistor for

Features & Benefits

General System Features

Meets EuP Lot 6 and COC Version 5 Tier 2 Specifications
HV Current Source for Start-Up
Smart X-Cap Discharger
Standard I²C Interface
1k EEPROM to Store Parameters
User-Friendly GUI for Digital PFC

PFC Controller

High Efficiency from Light Load to Full Load by CCM/DCM Multi-Mode Control
High PF Due to Patented Input Capacitor Current Compensation
Programmable Frequency Jittering
Programmable Brown-In and Brown-Out
Programmable Soft Start
Cycle-by-Cycle Current Limit
Open-Loop Protection

LLC Controller

600V High-Side Gate Driver with Integrated Bootstrap Diode and High dv/dt Immunity
Adaptive Dead-Time Adjustment of HB LLC with Minimum and Maximum Limit
Burst Mode Switching
Safe Start-Up in Case of System Fault
Two-Level Over-Current Protection (OCP)
Latch Shutdown Protection
Over-Temperature Protection (OTP)
Capacitive Mode Protection