If a Vivo Y73, Y93, or Y95 comes to your bench dead after flash, stuck on logo, or showing a charging issue that software reset won't fix, the PMI632-602 power IC is one of the first components you check. This is a Qualcomm PMIC, and on these Vivo boards it sits at the center of power distribution, controlling how voltage gets regulated and delivered to the rest of the motherboard. A PMIC like the PMI632-602 doesn't just manage charging. It handles power sequencing across multiple rails on the board, meaning it turns different voltage lines on and off in the correct order during boot and shutdown. When this sequencing breaks down because the IC has failed or degraded, you get symptoms that look confusing at first: a phone that won't power on, a phone that charges but never boots, or one that boots but shows random resets. Before you jump to CPU or NAND, ruling out the power IC saves you time and avoids unnecessary jumper work on unrelated components. This chip is built on a WLCSP package, which is standard for Qualcomm PMICs in this generation, and it uses TSMC's 0.13 µm BCD manufacturing process. That process combines bipolar, CMOS, and DMOS elements on a single die, which is why a small chip like this can manage both the precision voltage regulation and the higher current switching that charging circuits demand, all without a heatsink or external power stage. For your workflow, replacing this IC follows the same discipline as any BGA-level power IC swap. Confirm the fault with a boot-up current test, check for hardware fault signs like short circuits on the affected rails, then move to reballing once you've isolated the PMI632-602 as the failure point. Board holder and hot air station heat profiles for Qualcomm PMICs of this size are well established, so you're not working blind. Because it's a genuine Qualcomm part number rather than a generic replacement, you get consistent solder ball behavior during reballing, which matters when you're running several boards a day. Vivo Y73, Y93, and Y95 share closely related board layouts in this generation, which is why the same PMI632-602 shows up across all three models. That's useful for a repair shop that keeps limited IC stock, since one part covers a wider range of incoming devices without needing to hold three separate SKUs. Common failure patterns technicians report with this IC include charging problems where the phone shows charging on screen but the percentage doesn't move, boot loop issues that clear temporarily after a battery disconnect, and complete dead phone symptoms with no display and no charging response. In many of these cases, software marna or a factory reset won't resolve anything because the fault sits in the power hardware, not the firmware. Once you've confirmed no external damage or liquid exposure caused a short, the PMI632-602 becomes the direct replacement path. Stock this IC if you handle regular Vivo Y-series traffic in your shop. It's a straightforward, verified part number that keeps your dead board and charging fault turnaround times predictable, without guessing at compatibility or sourcing an unverified alternative.
