Ps42419ha Schematic Work ((full)) «PREMIUM»

HP PS-4241-9HA (also identified as series PC8027 or PC9058) is a 240W 80 PLUS Gold certified power supply unit (PSU) designed for HP small form factor (SFF) desktops. Unlike standard ATX power supplies, it uses a proprietary HP architecture that primarily outputs 12V to the motherboard, which then handles further voltage conversion. Schematic & Circuit Overview

Step 3: Select the Power Inductor

L = (Vin_max - Vout) * (Vout / Vin_max) / (ΔIL * Fsw)
For 24V input, 5V output, 500kHz, and 30% ripple current (0.6A):
L ≈ 22µH to 33µH (saturation current > 3A).

Want a polished forum-ready post or a printable schematic PDF for this design? ps42419ha schematic work

Q3: Where can I find an official PS42419HA schematic example?

A: Search for the manufacturer’s application note (e.g., “PS42419HA EVM User Guide”). If unavailable, reference the datasheet’s “Typical Application Circuit.”

Choose R2 = 10kΩ (standard), then R1 = 52.5kΩ → 53.6kΩ (1% standard value). HP PS-4241-9HA (also identified as series PC8027 or

Testing Reports: Detailed verification and testing reports provide load fraction data and efficiency curves.

Proprietary Pinout: The wiring uses a 6-pin and 4-pin configuration rather than the standard 24-pin ATX. Testing requires a custom DIY test box or a known-good HP motherboard. Rcomp = 10kΩ Ccomp = 2

If you are attempting a component-level repair, visual guides can be more helpful than text alone: Video Walkthrough : A detailed repair video on the PS-4241-9HA