."> IR3891_analog_12Vin_0.5-5Vo_0.5-5Vo_300-1500KHz_4A_dualOut_intLDO_integrated_POL_AC_V2.TSC - Infineon Designer
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0.5-5V 4A Dual Output 300-1500KHz Int. LDO Integrated PoL Solution IR3891 (AC Analysis)

Open online SPICE simulator circuit link: IR3891_analog_12Vin_0.5-5Vo_0.5-5Vo_300-1500KHz_4A_dualOut_intLDO_integrated_POL_AC_V2.TSC

IR3891 Dual Synchronous Buck Regulator
12V Single Supply

Bode plot can be calculated for one channel at a time.
- For channel 1 bode plot select CH1_V_Out and CH1_acin.
- For channel 2 bode plot select CH2_V_Out and CH2_acin.

Double click on SW-SPDT1 and SW-SPDT2 and change "DC state" parameter to select signal.

The IR3891 SupIRBuck® is an easy-to-use, fully integrated and highly efficient DC/DC
regulator. The onboard PWM controller and MOSFETs make IR3891 a space-efficient
solution, providing accurate power delivery for low output voltage.

IR3891 is a versatile regulator which offers programmability of switching frequency and
a fixed current limit while operating in wide input and output voltage range.

The switching frequency is programmable from 300kHz 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.

AC Transfer Characteristic
Evaluation board: IRDC3891
Other circuits

Product info: IR3891M
Technical Assistance