0.5-5V 25A Single Output 300-1500KHz Int. LDO Integrated PoL Solution IR3447 (AC Analysis)

Open online SPICE simulator circuit link: IR3447_digital_12Vin_0.5-5Vo_300-1500KHz_25A_singleOut_intLDO_integrated_POL_AC_V1.tsc

IR3447 Synchronous Buck Regulator
12V Single Supply

Over Current Protection
0: FLOAT 26 A
1: VCC 32.5 A
2: LGND 19.5 A

Bode Plot Requirements:
1. Phase Margin (PM) > 50 degrees
2. Crossover Frequency (Fo) < Switching Frequency / 5 (F_sw/5)
3. Gain Margin (GM) > 10 dB

The IR3447 SupIRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC
regulator. The onboard PWM controller and MOSFETs make IR3447 a space-efficient
solution, providing accurate power delivery for low output voltage and high current
applications.

IR3447 is a versatile regulator which offers programmability of switching frequency
and current limit while operating in wide input and output voltage range.

The switching frequency is programmable from 300 kHz to 1.5MHz for an optimum
solution. It also features important protection functions, such as Over Voltage Protection
(OVP), Pre-Bias startup, hiccup current limit and thermal shutdown to give required
system level security in the event of fault conditions