company blog about Recycle TI Hot-Swap Controllers:Positive/Negative/HVDC Hot-Swap Controller

Recycle TI Hot-Swap Controllers:Positive/Negative/HVDC Hot-Swap Controller

Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned recycler of electronic components, provides customers with comprehensive electronic component recycling solutions through its professional expertise, competitive pricing and integrity.

TI hot-swap controllers are core power protection components for live backplane systems. They are divided into three main product lines: positive-pole hot-swap controllers, negative-pole hot-swap controllers and high-voltage direct current (HVDC) hot-swap controllers. By driving external MOSFETs, they provide surge suppression, current limiting, power clamping and fault protection during card hot-swapping, ensuring the safe hot-swapping of modules without power interruption in applications such as servers, telecommunications power supplies, energy storage, data centres, industrial DC bus systems, humanoid robot power supply circuits, and low Earth orbit satellite power distribution. This enables the safe insertion and removal of modules without interrupting power supply, thereby preventing backplane voltage drops, component breakdown and system downtime.

I. Positive Hot Swap Controllers

Positive hot-swap controllers are designed for positive-voltage DC bus systems and manage the positive power path. Mainstream models include the TPS2492, LM5066H, LM5068 and LM5064, covering a wide voltage range of 5.5V to 90V. Some models integrate a PMBus telemetry interface, enabling real-time collection of voltage, current, power and temperature data for reporting to the master control unit.

Key features: programmable soft-start slope, adjustable current limiting and power clipping protection to ensure external power transistors operate within the Safe Operating Area (SOA); support for under-voltage lock-out (UVLO), over-voltage lock-out (OVLO) and fast short-circuit protection; configurable fault modes including latch-off or automatic retry; built-in Power Good signal for convenient system timing control.

Typical Applications: AI computing server backplanes, industrial automation equipment, 24V/48V industrial DC power supplies, and power supply branches for humanoid robots.

II. Negative Hot-Swap Controller

The negative hot-swap controller uses the negative voltage rail as its reference and is designed for traditional telecommunications – 48V power supply architectures. Representative models include the TPS2398 and TPS23525, with an input range of –80V to –10V, making them suitable for redundant power supply systems in telecommunications base stations and communications equipment rooms.

Key features: Dedicated gate drive logic for the negative rail; support for dual OR-ing redundant power switching; high resistance to lightning surges; dual current-limiting stage design to handle voltage sags and input step disturbances; independent soft-start capacitor disengagement mechanism to reduce inrush current and ease the selection of external FETs; all protection thresholds and hysteresis parameters are externally programmable.

Typical Applications: Telecommunications base stations, data centres – 48V DC power distribution, redundant power supply parallel systems.

III. High-Voltage DC (HVDC) Hot-Swap Controller

The HVDC hot-swap controller is designed for 800V and ±400V high-voltage DC bus systems. Representative solutions include the LMI800 and TPS23521 floating-ground architecture solutions, which are suitable for high-power, high-voltage applications such as high-voltage energy storage, PV feed-in, high-voltage charging points and high-voltage power distribution for LEO satellites. It is a key solution for hot-swap protection in high-voltage DC systems.

Key features: Floating-ground control architecture with isolated bias power supply, enabling safe management of 800V high-voltage busbars; supports adjustable overvoltage, undervoltage, current limiting and short-circuit protection on the high-voltage side; the LMI800 model features PMBus+EEPROM, allowing online parameter configuration and fault log storage, with reinforced isolation specifications; Wide operating temperature range of –40°C to 125°C, meeting the high reliability requirements of automotive, industrial and aerospace applications.

Typical applications: Energy storage converters, high-voltage DC distribution cabinets, new energy charging points, and low Earth orbit satellite power systems.

IV. Details of TI Hot-Swap Controller Recycling by Shenzhen Mingjiada Electronics

Mingjiada Electronics concurrently operates both original equipment supply and stock recycling businesses, specialising in the long-term purchase of the full range of electronic component products. We assist factories, distributors, solution providers and traders in clearing obsolete stock, cancelled order stock and discontinued product inventory.

Scope of Recycling Categories

5G chips, new energy ICs, IoT ICs, Bluetooth ICs, V2X ICs, automotive-grade ICs, communications ICs, AI ICs, etc. Additionally, we supply memory ICs, sensor ICs, microcontroller ICs, transceiver ICs, Ethernet ICs, Wi-Fi chips, wireless communication modules, connectors and other electronic components

Requirements for Materials to be Recycled: Genuine, original products; items in original packaging or on reels are preferred; components removed from boards, refurbished items and counterfeit goods will not be accepted; full reels, entire batches and small quantities of loose stock are all eligible for valuation.

Advantages of Our Recycling Service

- Professional valuation team: Well-versed in chip market trends, capable of distinguishing between automotive, industrial, communications and aerospace-grade versions, with quotations aligned with current spot market prices;

- Flexible transaction methods: Cash and corporate bank transfers accepted; for large volumes, we offer on-site inspection and collection, with nationwide logistics support;

- Prompt settlement: Rapid payment upon verification of materials, ensuring efficient cash flow recovery;

- Compliant Disposal: Obsolete chips are sorted and processed in accordance with regulations; no unauthorised circulation, suitable for corporate financial inventory write-offs.

Standard Recycling Process

1. The client compiles a list, providing model numbers, quantities, batch numbers, packaging condition and material grade (industrial / automotive);

2. Mingjiada’s technical team verifies model specifications and cross-checks part numbers and versions, issuing a quotation within 24 hours;

3. Both parties confirm the price and agree on logistics arrangements, including on-site collection or sending samples for testing;

4. Physical inspection and authenticity verification upon receipt of goods; settlement is completed upon approval.