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Part Number: uP9512R

Function: Phase Synchronous-Rectified Buck Controller

Package: VQFN5x5-40L package

Manufacturer: uPI Semiconductor( www.upi-semi.com )

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uP9512R datasheet controller

Description

The uP9512R is an 8/7/6/5/4/3/2/1-phase PWM controller specifically designed to provide high-precision output voltage system for next generation GPUs. The uP9512R provides programmable output voltage and active voltage positioning functions to adjust the output voltage as a function of the load current, so it is optimally positioned for a load current transient.

Features

1. Support up to 2MHz Operation Frequency

2. Continuous Inductor DCR Current Sensing

3. Auto-Phase Shedding

4. Adjustable Soft-Start Time

5. Power State Input (PSI)

6. Power Good Indication

7. Channel Current Limit Protection

8. Total Output Over Current Protection

9. Over/Under Voltage Protection

10. Over Temperature Protection

Pinout

uP9512R pinout pwm

Applications

1. Desktop/Server CPU Power Supply (Core VRM)

(1) uP9512R is suitable for CPU core power supply of Intel and AMD platforms.

(2) As a multi-phase synchronous buck controller for multi-core CPUs requiring high current and fast response, current distribution and efficient power supply are possible

(3) Example: High-end CPU power supply such as Intel LGA1700, LGA1200, AMD AM5, TR4

2. GPU power supply (Vcore and Memory Power)

(1) Can be used as Vcore and GDDR memory power supply of NVIDIA and AMD GPUs

(2) Especially adopted in many Power Delivery designs of board partner (AIB) graphics cards

(3) High switching frequency, fast DVID response performance is required

3. FPGA / ASIC / AI Accelerator board power supply

(1) Used as power supply of Xilinx, Intel FPGA, or AI computing SoC (e.g. Google TPU, NVIDIA Grace, etc.)

(2) Suitable for applications where load transient characteristics are important

4. Mainboard power supply for server / data center

(1) Adjust multiple power rails such as CPU, VCCIN, VDDR on server class mainboards

(2) Supports VR13 (Intel), SVID interface → Used as a server controller

(3) High-end motherboard CPU VCore ( ASUS ROG, MSI, GIGABYTE, NVIDIA RTX graphics card )

uP9512R Datasheet

The DS1804 is a nonvolatile digital potentiometer (NV trimmer) with 100 discrete wiper positions, designed for precise resistance adjustment in electronically controlled systems.

Function: Nonvolatile Trimmer Potentiometer

Package: DIP, SO 8 Pin Type

Manufacturer: Dallas Semiconductor -> Maxim Integrated -> Analog.com

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DS1804 datasheet pdf

Description

The DS1804 NV trimmer potentiometer is a nonvolatile digital potentiometer that has 100 positions. The device provides an ideal method for low-cost trimming applications using a CPU or manual control input with minimal external circuitry. Wiper position of the DS1804 can be stored in EEPROM memory on demand. The device’s wiper position is manipulated by a three-terminal port that provides an increment/decrement counter controlled interface.

This port consists of the control inputs CS, INC, and U/D. The DS1804 is available in three resistor grades, which include a 10kΩ, 50kΩ, and 100kΩ. The device is provided in an industrial temperature grade. Additionally, the DS1804 will operate from 3V or 5V supplies and is ideal for portable application requirements. Three packaging options are available and include the 8-pin (300 mils) DIP, 8-pin (150 mils) SO, and 8-pin (118 mils) μSOP.

The DS1804 is a single nonvolatile potentiometer. The device has a total of 100 tap-points including the L- and H- terminals. A total of 99 resistive segments exist between the L- and H- terminals. These tap points are accessible to the W-terminal, whose position is controlled via a three-terminal control port.