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MT6315GP Power IC

MT6315GP Power IC

Rs.300.00 PKR
Rs.300.00 PKR
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MT6315GP/B is MediaTek's 4-phase step-down buck converter IC, built to power the GPU, processor-little core, and SRAM/audio rails on MediaTek Dimensity-based boards. Packed in a compact 45-pin WLCSP, it delivers up to 5A per phase with programmable output voltage from 0.4V to 1.19375V. Technicians reach for this IC on dead-board jobs, no-power-after-drop cases, and GPU/core rail shorts where the power sequencing has failed. Genuine, tested replacement for board-level rework on Dimensity 1200-class devices.

⚖️ Weight: 0.01 kg

MST-IC-254

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Description

Jab koi MediaTek Dimensity board bilkul dead pari ho aur charging current bhi na khinche, zyada tar cases mein MT6315GP power management IC hi culprit nikalta hai. Ye chip board ka core power supply sambhalta hai — GPU, processor-little, aur SOC SRAM plus audio rail tak clean, stable voltage pohanchana isi IC ka kaam hai. Agar ye IC internally short ho jaye ya eFuse configuration corrupt ho jaye, phone bilkul dead ho jata hai ya sirf charging logo par hang hota hai.MT6315GP/B design ke hisaab se ek 4-phase buck converter hai — matlab is ek chip ke andar chaar independent step-down DC/DC converters bundle kiye gaye hain. Har phase apna alag current deliver karta hai, aur configuration eFuse ke zariye set hoti hai, is liye har board par voltage allocation thoda differ kar sakta hai. GPU rail ke liye ye typically 0.75V par 5A tak deliver karta hai (do phases combine hoke), jabke processor-little rail 0.8V par aur SOC_SRAM plus audio rail 0.75V par power leta hai. Output voltage 6.25mV steps mein 0.4V se 1.19375V tak adjust ho sakta hai, jo SPMI ya I2C-compatible interface ke zariye control hota hai — yahi wo mechanism hai jo main PMIC ko dynamic voltage scaling (DVS) allow karta hai.Board repair ke waqt is IC ki ek important khoobi kaam aati hai: FAULTB pin. Jab bhi koi internal fault trigger hota hai — over-current, short, ya over-temperature — ye pin seedha main PMIC ko alert bhej deta hai, jisse system automatically shut down ya recover kar sake. Built-in protections mein output short-circuit protection, input over-voltage protection, aur thermal shutdown shamil hain, jo chip ko permanent damage se bachate hain jab tak fault temporary ho.Practical repair scenario ye hai: agar board "dead after flash" ho, ya charging lagane par current flow to ho lekin phone on hi na ho, sabse pehle current draw test karke check karein ke fault kis rail par hai. Agar GPU ya processor rail short nikle, MT6315GP ko reball karna ya change karna needed hota hai. Isi tarah agar board boot loop mein phasi ho aur software marne se bhi masla theek na ho, hardware side par ye IC suspect list mein top par aata hai.Physical size ki baat karein to ye chip sirf 2.35 x 3.44 mm ke WLCSP 45-pin package mein aata hai — is size ki wajah se reballing ke liye fine-pitch stencil aur proper hot air control zaroori hai. Operating temperature range -30°C se +85°C tak hai, jo isay Pakistan ke climate conditions ke liye theek suit karta hai.Jo technicians Dimensity-based Redmi, Vivo, aur Huawei boards par regularly kaam karte hain, unke liye ye IC bench stock mein rakhna zaroori hai — kyunke power rail faults is chipset family mein kaafi common repair job ban chuke hain. Genuine tested part use karne se rework ke baad dobara short ya instability ka risk kaafi kam ho jata hai.

Key Features

Four high-efficiency step-down buck converters bundled into a single 4-phase configuration

Delivers up to 5A per phase for stable GPU and core power delivery

Programmable output voltage from 0.4V to 1.19375V in 6.25mV steps for DVS control

SPMI or I2C-compatible interface supports high-speed communication with main PMIC

Dedicated FAULTB pin reports fault alarms directly to the main PMIC

Built-in output short-circuit, input over-voltage, and over-temperature protection

Remote differential feedback sensing compensates I×R voltage drop between IC and load

Compact 45-pin WLCSP package suited for tight board layouts

Specifications

Brand Entity MediaTek
Product Entity MT6315GP/B Power Management IC
Technology Entity 4-Phase Buck DC/DC Converter, SPMI/I2C Interface
Compatible Device Entities MediaTek Dimensity 1200-class smartphones (Redmi K40, Huawei Note 10 Pro, Vivo S9)
Repair Process Entity Board-level IC reballing, power rail diagnosis, dead board repair
Industry Entity Mobile Phone Motherboard Repair, PCB Rework

Compatible Devices

Chipset-family compatibility — confirmed use on MediaTek Dimensity 1200-class boards, including Redmi K40, Huawei Nova/Note 10 Pro, and Vivo S9 series. Exact board-level compatibility should be cross-checked against the specific phone model's schematic before replacement, as eFuse voltage configuration can vary by device.

Common Repair Uses

Dead board power rail repair, no-power-after-flash troubleshooting, GPU/CPU-little core rail short diagnosis, boot loop repair caused by buck converter faults, IC reball and replacement on Dimensity-based motherboards.

FAQ

What is the product name?
The product name is MT6315GP Power IC.
What is the brand of this product?
The brand of this product is MediaTek.
What is the model of this product?
The model of this product is MT6315GP/B.
What is this product used for?
This product is used for supplying regulated core power to the GPU, processor-little, and SRAM/audio rails on MediaTek Dimensity-based boards.
Which devices are compatible with this product?
This IC is used on MediaTek Dimensity 1200-class boards, including Redmi K40, Huawei Note 10 Pro, and Vivo S9 — compatibility should be verified against the specific board schematic before replacement.
Who should use this product?
This product is suitable for mobile repair technicians, repair shops, service centers, and professional board-level repair specialists.
Does this IC support dynamic voltage scaling for board power rails?
Yes, output voltage adjusts from 0.4V to 1.19375V in 6.25mV steps via SPMI or I2C interface, enabling dynamic voltage scaling.
What causes a MediaTek board to stay dead even after replacing this Power IC?
If the board remains dead after replacement, check for shorts on the VBUCK output rails or eFuse configuration mismatch, since incorrect voltage allocation on a mismatched board variant can prevent normal boot.

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