SSD Multi-Rail Power Supply with Adjustable Startup Timing and Slew Rate
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Solution Overview
Problem
Existing test power supplies cannot control the power-on interval and slew rate between different channels of Solid State Drives (SSDs), failing to meet complex timing requirements.
Innovation Solution
A digital power supply with adjustable power-on time interval and slew rate, utilizing a main control circuit connected to power supply circuits, which includes MOSFETs and filter capacitors to form step-down circuits, controlled by PWM waves to output stable voltage at determined intervals and slew rates, with optional PID and feedback mechanisms for precise voltage regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing test power supply is used, then device simplicity is maintained, but power-on time interval and slew rate control capability is lost
Solution Approach 1:
The power supply is divided into multiple independent power supply adjustable circuits, each capable of controlling power-on time interval and slew rate independently. This segmentation allows each channel to be adjusted separately while maintaining overall system functionality.
Solution Approach 2:
The power supply circuit incorporates adjustable parameters for power-on time interval and slew rate, transforming a static power supply into a dynamic one that can adapt to different timing requirements. This is achieved through controllable switches and adjustable circuit elements that modify the power-on characteristics in real-time.
2Reliability
If power-on time interval and slew rate are made adjustable, then SSD test requirement compliance is improved, but control circuit complexity increases
Solution Approach 1:
The control circuit pre-configures the power-on time interval and slew rate parameters before actual power delivery. By setting these parameters in advance through adjustable circuit elements, the system ensures compliance with SSD test requirements without requiring complex real-time control mechanisms.
Solution Approach 2:
Adjustable circuit elements such as variable resistors or programmable logic devices are introduced as intermediaries between the control signal and the power supply output. These intermediaries enable precise control of power-on characteristics while isolating the complexity from the main power delivery path.
3Measurement precision
If multiple power supply channels are controlled independently, then timing requirement precision is improved, but system complexity increases
Solution Approach 1:
Each power supply channel is equipped with its own adjustable circuit for controlling power-on time interval and slew rate. This segmentation enables independent precision control of each channel's timing characteristics, ensuring that multiple channels can meet specific timing requirements without interfering with each other.
Solution Approach 2:
Each power supply channel has customized adjustable parameters tailored to its specific timing requirements. This local quality approach allows different channels to have different power-on time intervals and slew rates optimized for their respective functions, achieving high timing precision across the system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise control of power-on time interval and slew rate, ensuring stable voltage output across multiple channels, meeting SSD test requirements and improving data operation efficiency.
Implementation Method 1
The main control circuit is configured to respond to external control parameters received by the first interface, and send pulse-width modulation (PWM) waves to each power adjustable circuit through a first pair of pins of the main control device
Implementation Method 2
the first MOS, the second MOS and the filter capacitor together form a step-down circuit, and the power supply adjustable circuits are configured to control an on-off of the first MOS and the second MOS in response to the PWM waves of the main control circuit
Data Source
AI summary
The present disclosure relates to the technical field of solid state drives, and discloses a digital power supply with adjustable power-on time interval and slew rate and an adjusting method. The digital power supply provides working power for the digital power supply by the power supply circuit, and is integrally controlled by the main control circuit including the main control device and the first interface, and outputs voltage by a multi-channel power supply adjustable circuit including a step-down circuit composed of a first MOS, a second MOS and a filter capacitor, wherein each power supply adjustable circuit corresponds to a power supply rail in the SSD, and in this process, external control parameters are received through the first interface in the main control circuit.