ROHM Semiconductor BM85060FV CRM Totem Pole PFC Controller IC

ROHM Semiconductor BM85060FV CRM Totem-Pole PFC Controller IC drives bridgeless totem-pole power-factor-correction topologies. The device controls a fast-switching leg operating at high frequencies and a second leg operating at the AC line frequency. Eliminating the conventional diode bridge helps improve conversion efficiency and power density.

The ROHM BM85060FV PFC Controller supports Critical Conduction Mode, Discontinuous Conduction Mode, and burst-mode operation under very light loads. High-voltage startup, brownout detection, X-capacitor discharge, dynamic response enhancement, and comprehensive protection simplify the implementation of AC-DC power supplies. The controller is ideal for 5G and telecom equipment, industrial systems, gaming consoles, ultra-high-definition equipment, and commercial power supplies.

Features

Bridgeless totem-pole PFC topology control
Critical Conduction Mode and Discontinuous Conduction Mode operation
Burst-mode operation at very light loads
High-voltage startup
Brownout detection
X-capacitor discharge function
Dynamic response enhancer
Fast and secondary output overvoltage protection
Output undervoltage protection

Input overvoltage protection
Peak-current and soft-overcurrent protection
Inrush-current limiting
Open-loop detection
Internal thermal shutdown
AC voltage sudden-change detection
Negative overcurrent limiting
Light-load operating mode
Soft-start function
V_CC discharge function

Applications

Power supplies for 5G / Telecom
Power supplies for industrial applications
Power supplies for gaming consoles

Ultra-High Definition (UHD) power supplies
Commercial power supplies

Specifications

One PFC control channel
Supply operating voltage ranges
- V_CC pin voltage range of 8.0V to 36V
- HV pin voltage range of 80V to 600V
Maximum rated V_CC pin voltage of 40V
Switching frequency range of 25kHz to 1MHz
Typical input voltage of 2.5V
Maximum input voltage of 36V
Reference-voltage accuracy of 2%
Auxiliary winding zero-cross detection

Logic-level control outputs
- High-side fast-leg PWM output
- Low-side fast-leg PWM output
- High-side slow-leg control output
- Low-side slow-leg control output
Dedicated fault-trigger output
Operating temperature range of -40°C to +125°C
SSOP-B20 package
Package dimensions of 6.5mm x 6.4mm x 1.45mm
RoHS-compliant construction