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0.5-5V 25A Single Output 300-1500KHz Int. LDO Integrated PoL Solution IR3847 (AC Analysis)

Open online SPICE simulator circuit link: IR3847_digital_12Vin_0.5-5Vo_300-1500KHz_25A_singleOut_intLDO_integrated_POL_AC_V1.tsc

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

IR3847 Synchronous Buck Regulator
12V Single Supply

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

The IR3847 SupIRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC
regulator. The onboard PWM controller and MOSFETs make IR3847 a space-efficient
solution, providing accurate power delivery for low output voltage and high current

IR3847 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 1.5 MHz 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.

Evaluation board: IRDC3847
Other circuits

Product info: IR3847M
Technical Assistance
AC Transfer Characteristic