0.5-5V 25A Single Output 306-1454KHz Int. LDO Integrated PoL Solution IR38063 (AC Analysis)

Open online SPICE simulator circuit link: IR38063_analog_12Vin_0.5-5.0V_306-1454K_25A_singleOut_intLDO_integrated_POL_AC_V1.TSC


IR38063 Synchronous Buck Regulator with PMBus Interface
12V Single supply in Analog Mode

Over Current Protection
0: FLOAT 27 A
1: VCC 33 A
2: LGND 21 A

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

{ Please double click here to enter design criteria }

{ Input Voltage }
V_in := 12;
{ Target output voltage }
V_out := 1.2;
{ Maximum output current }
I_out := 25;
{ Target Switching Frequency }
F_sw := 600k;
{ Derated (DC & AC) value for a single output capacitor }
C_out := 50.77u;
{ Number of output capacitors with value C_out }
C_out_Nr := 7;
{ Target Vout ripple }
Vout_ripple := 12m;
{ Compensation capacitor. Default is 2.2nF }
C8_Cc := 2.2n;
{ I_ripple vs Iout percentage }
L_ripple_percentage := 35;
{ Load step current }
I_step := 7.5;

The IR38063 PMBus SupIRBuck™ is an easy-to-use, fully integrated and highly efficient
DC/DC regulator with I2C/PMBus interface. The onboard PWM controller and MOSFETs
make IR38063 a space-efficient solution, providing accurate power delivery for low
output voltage and high current applications.

The IR38063 can be comprehensively configured via PMBus and the configuration
stored in internal memory. In addition, PMBus commands allow run-time control, fault
status and telemetry.

The IR38063 can also operate as a standard analog regulator without any programming
and can provide current and temperature telemetry in an analog format.

Other circuits

Product info: IR38063M
Evaluation board: IR38063
Technical Assistance
AC Transfer Characteristic