JAJSB26I February 2010 – March 2022 LMZ12010
PRODUCTION DATA
The architecture used is an internally compensated emulated peak current mode control, based on a monolithic synchronous SIMPLE SWITCHER core capable of supporting high load currents. The output voltage is maintained through feedback compared with an internal 0.8-V reference. For emulated peak current mode, the valley current is sampled on the down-slope of the inductor current. This is used as the DC value of current to start the next cycle. The primary application for emulated peak current mode is high input voltage to low output voltage operating at a narrow duty cycle. By sampling the inductor current at the end of the switching cycle and adding an external ramp, the minimum on time can be significantly reduced, without the need for blanking or filtering, which is normally required for peak current mode control.