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  4. Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A (Monolithic Power Systems, Inc.)
Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A-HF920A
Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A-Monolithic Power Systems, Inc.

Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A
Monolithic Power Systems, Inc.

About This Product

■Summary

HF920A is a flyback regulator with a monolithic 900V MOSFET. The HF920A provides superior power control for AC/DC applications that require high reliability, such as smart meters, large appliances, industrial controls, and products powered from inadequate AC power grids. Requires a minimum number of external components. The HF920A uses peak current mode control to provide excellent transient response and easy loop compensation. When the output power falls below a predetermined level, the regulator enters burst mode. IC power consumption is specially optimized. As a result, the HF920A achieves very low power consumption in standby state. MPS' proprietary 900V monolithic process enables overtemperature protection on the same silicon as the 900V power MOSFET, providing the most accurate thermal protection. It also provides rich protection functions such as VCC low voltage lockout function, overload protection, overvoltage protection, low voltage protection, and short circuit protection. The HF920A is designed to minimize power line communication (PLC) electromagnetic interference in home and building automation applications. The operating frequency is programmed externally using a single resistor, so the power supply's radiated energy can be designed to avoid interference with the PLC. In addition to programmable frequency, the HF920A employs frequency jittering, which significantly reduces noise levels and EMI filter costs. HF920A is offered in SOIC8-7A and SOIC14-11 packages.

■Features and benefits

・Monolithic 900V/15Ω MOSFET and high voltage current source ・Fixed switching frequency, programmable up to 150kHz ・Current mode control method ・Frequency jittering ・Low standby power consumption with active burst mode ・<30mW no-load power consumption ・Internal leading edge blanking (LEB) ・Built-in soft start (SS) function ・Internal slope compensation -Programmable overvoltage and undervoltage protection via PRO pin ・Overheat protection (OTP) ・VCC undervoltage lockout function with hysteresis (UVLO) ・VCC overvoltage protection (OVP) ・Time-based overload protection (OLP)

  • Product

    Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A

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1 Models of Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A

Image Part Number Price (excluding tax) Control Method Type Typical Pmax (W) VCC (max) (V) Vac (max) (V) Vac (min) (V) Vbr (V) Fsw (max) (kHz) Package (mm)
Flyback Secondary Regulation 900V Fixed Frequency Offline Regulator with Input Undervoltage Protection HF920A-Part Number-HF920A

HF920A

Available upon quote

Fixed Frequency

Regulator

10

30

420

85

900

150

SOIC14-11, SOIC8-7

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About Company Handling This Product

Monolithic Power Systems, Inc.

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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