Hello TI Support Team,
I’m evaluating the TPS61232 boost converter using the official PSpice macromodel package.
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Download & Setup
• I downloaded the complete “TPS61232_STARTUP-trans” example project from the TI TPS61232 Unencrypted PSpice Transient Model Package (Rev. B).
• I opened the provided schematic in PSpice for TI (Version 2024).
• I made no modifications to the component values, netlist, or pin wiring—everything is exactly as shipped. -
Simulation Conditions
• Input voltage (VIN): 3.3 V
• Inductor: 1 µH
• CIN: 22 µF, COUT: 30 µF
• RLOAD: 2.5 Ω (i.e. 2 A load at 5 V)
• EN tied directly to VIN
• Soft‑start cap: 10 nF on SS, bootstrap cap: 100 nF on HYS/VS
• Transient run for 1.15 ms with 20 ns max time‑step -
Observed Behavior
Instead of ramping up to 5 V, the output settles at about 3.2 V, and never transitions into the expected regulated mode.
Could you please help me understand:
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Is there a known limitation or special setting required when using the TPS61232 PSpice macromodel in PSpice for TI?
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How can I get 5V in the output?
Thank you for your time and assistance.
Best regards,
Armando Isaac Parra Cruz.