Ipkbl-sr 35w Schematic

The IPKBL-SR 35W is a specific motherboard revision commonly found in Intel 7th Generation (Kaby Lake) Small Form Factor (SFF) systems, most notably the HP Pavilion Wave 600 series.

• Controller IC: U1 – Likely a flyback controller (e.g., LD5760, NCP1342, or proprietary IPKBL IC). Supports frequency foldback for light load efficiency.
• MOSFET: Q1 – Primary switch (e.g., 650V, 4A, Rds(on) < 2Ω). Driven via gate resistor Rg.
• Current Sensing: Resistor Rcs (0.3–0.5Ω) from MOSFET source to GND for cycle-by-cycle current limiting.
• Snubber: RCD clamp (D1, R2, C2) across the primary winding to suppress leakage inductance spikes.

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3.6 Protection Circuits

IPKBL-SR 35W REV: x.x

4. Common Failure Points & Repair Guide

If you have a dead unit on your bench, check these components in order: The IPKBL-SR 35W is a specific motherboard revision