BD7679G-GTR

●General Description 

BD7679G is a PWM controller type DC/DC converter 

IC for AC/DC that provides an optimum system for all 

products that requires an electrical outlet. This product 

supports both isolated and non-isolated devices. IC 

enables simple design of low-power electrical 

converters. With switching MOSFET and current 

detection resistor as external devices, it enables more 

freedom in design. 

Since the peak current control is utilized, peak current 

is controlled in each cycles, application excels wide 

bandwidth and transient response. 

BD7679G includes various protective functions such 

as soft start function, burst function, per-cycle over 

current limiter, VCC overvoltage protection and 

overload protection. 

An external stop pin (COMP pin) is provided, so that 

switching stopping can be set by external signals. The 

function is available as overheating protection and over 

voltage protection of secondary output, so on. 

The PWM switching frequency is fixed at 65 kHz. 

A frequency hopping function is included which contributes 

to low EMI.