8

 2004 Semtech Corp.

www.semtech.com

POWER MANAGEMENT

SC1205

Proper layout will guarantee minimum ringing and elimi-

nate the need for external components. Use of SO-8 or

other surface mount MOSFETs while increasing thermal

resistance, will reduce lead inductance as well as radi-

ated EMI.

Applications Information (Cont.)

Over Temp Shutdown

The SC1205 will shutdown by pulling both driver if its

junction temperature, T

Typical Performance Plots

Figure 1: PWM input and Gate drive switch-

ing waveforms. The MOSFETs driven are

FDB7030BL . See Figure 4 (Evaluation Board

Schematic)

Ch1: PWM input signal

Ch2: Top Gate Drive

Ch3: Phase (Switching) Node

Ch4: Bottom Gate

Figure 2: PWM input and Gate drive and

phase node switching waveforms with time

scale expanded. The MOSFETs driven are

FDB7030BL . See Figure 4 (Evaluation

Board Schematic)

Ch1: PWM input signal

Ch2: Top Gate Drive

Ch3: Phase (Switching) Node

Ch4: Bottom Gate