Monolithic Power Systems HFC0512 | Demoboard EVHFC0512-S-00A

Description

The EVHFC0512-S-00A is an evaluation board designed to demonstrate the capabilities of the HFC0512, a fixed-frequency, current-mode controller with internal slope compensation. The HFC0512 is specifically designed for medium-power, offline, flyback, switch-mode power supplies.The HFC0512 is a highly efficient, green-mode controller. At light loads, the controller maintains the peak current (IPEAK) and reduces its switching frequency (fSW) down to 27kHz to achieve excellent light-load efficiency. At very light loads, the controller enters burst mode to achieve very low standby power consumption.The HFC0512 offers frequency jittering to help dissipate energy generated by the conducted noise. The EVHFC0512-S-00A meets EN55022 conducted EMI requirements.The HFC0512 features an over-power compensation (OPC) function, which reduces the difference between the low line and high line for the over-power protection (OPP) point. In addition, the device features protections such as thermal shutdown, VCC under-voltage lockout (UVLO), overload protection (OLP), over-voltage protection (OVP), and brownout protection.

Features

• Fixed-Frequency, Current Mode Control with Internal Slope Compensation
• Frequency Foldback Down to 27kHz at Light Loads
• Burst Mode for Low Standby Power Consumption, Meeting EuP Lot 6 Standard
• Frequency Jittering for ReducedElectromagnetic Interference (EMI)
• Adjustable Over-Power Compensation
• Internal High-Voltage Current Source
• VCC Under-Voltage Lockout (UVLO) Protection with Hysteresis
• Brownout Protection via the HV Pin
• Overload Protection (OLP) with Configurable Delay
• Thermal Shutdown (Auto-Restart with Hysteresis)
• Latch-Off Protections:
• External Over-Voltage Protection (OVP) and Over Temperature Protection (OTP) via the TIMER Pin
• VCC OVP
• Short-Circuit Protection (SCP)
• Configurable Soft Start (SS)
• Available in an SOIC8-7A Package

Typical applications

• AC/DC Adapters for Notebook Computers, Tablets, and Smartphones, Offline Battery Chargers, LCD Televisions and Monitors
• AC/DC Power for Small and Large Appliances

More information

• Datasheet
• IC product information