TPS1689x-Q1 - 20A Stackable eFuse with PMBus | Texas Instruments
MPN: TPS1689x-Q1 ✓ NakahandaTPS1689x-Q1 Ulas
An eFuse is an electronic fuse that combines the functions of a traditional fuse with active protection features such as overcurrent, overvoltage, and inrush current limiting. Unlike a passive fuse, an eFuse can be reset and offers precise, programmable protection. The TPS1689x-Q1 is a hot-swap controller that manages the safe insertion and removal of circuit boards in live systems, preventing damage from inrush currents and short circuits. It is part of the broader power management IC hierarchy, specifically within the hot-swap and eFuse category, which is essential for high-reliability systems.
Key features include multiple protection modes: overload, short circuit, and excessive inrush current. The device responds to output overcurrent conditions during steady-state by performing a circuit-breaker action after a user-programmable transient fault blanking interval. This allows the device to support higher peak currents for a short user-defined interval while ensuring robust protection against persistent faults. The PMBus interface supports monitoring of voltage, current, and temperature, as well as configuration of protection thresholds and fault response.
The TPS1689x-Q1 is available in a small package, making it suitable for space-constrained designs. It is AEC-Q100 qualified for automotive applications, ensuring reliability under harsh conditions. The device is designed to work with very few external components, simplifying the design and reducing BOM cost. The stackable feature allows multiple devices to be connected in parallel, with the IMON pins tied together to provide total current telemetry.
Typical applications include automotive body control modules, infotainment systems, advanced driver-assistance systems (ADAS), and industrial power distribution. The device is also suitable for server and telecom power systems where hot-swap capability and high reliability are critical. The PMBus interface enables remote monitoring and control, making it ideal for smart power management in data centers and industrial automation.
When designing with the TPS1689x-Q1, it is important to consider the thermal performance of the package and the PCB layout. Adequate copper area and thermal vias are recommended to dissipate heat generated during high-current operation. The PMBus interface should be properly terminated and isolated if used in noisy environments. The device's programmable fault blanking interval should be set according to the system's inrush current requirements to avoid nuisance trips.
Mga alternatibo na pwedeng ilagay na TPS1689x-Q1 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok TPS1689x-Q1 (parehas na form factor at footprint) — pagkakaiba sa Absolute Maximum Input Voltage, Input Voltage Range, Number of Channels, Operating Temperature Range, Package.
TPS1689
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →TPS1685x
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
TPS23521
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →TPS2393
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →TPS1689x-Q1
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →TPS1689x-Q1 Mga Pinakamataas na Rating at Electrical Characteristics
| Hanay ng Voltage ng Input | 9V to 80V |
| Absolute Maximum Input Voltage | 92V |
| Negative Transient Voltage Tolerance | -5V at output |
| Integrated FET On-Resistance | 3.5mΩ (typ) |
| Maximum Continuous Current | 20A |
| Stackable | Yes |
| PMBus Interface | Yes |
| Protection Modes | Overload, short circuit, excessive inrush current |
| Circuit-Breaker Action | After user-programmable transient fault blanking interval |
| Package Type | VQFN (per datasheet) |
| Hanay ng Temperature na Operasyon | -40°C to +125°C (automotive grade) |
| AEC-Q100 Qualified | Yes |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
| Lead-Free | Yes |
Pin Configuration ng TPS1689x-Q1
| Pin 1 | VIN — Input voltage supply |
| Pin 2 | VOUT — Output voltage |
| Pin 3 | GND — Ground |
| Pin 4 | EN — Enable pin |
| Pin 5 | IMON — Current monitor output |
| Pin 6 | PMBUS_CLK — PMBus clock |
| Pin 7 | PMBUS_DATA — PMBus data |
| Pin 8 | FLT — Fault indicator |
Tipikal na mga Gamit
TPS1689x-Q1 ay nararapat para sa 6 aplikasyons: Automotive Body Control Module, Infotainment System Power Distribution, ADAS Power Management, Industrial Power Distribution, Server and Telecom Hot-Swap, Battery Management Systems.
Automotive Body Control Module
The TPS1689x-Q1 provides robust power protection for automotive body control modules, handling up to 20A with a 9V-80V input range. Its AEC-Q100 qualification ensures reliability in harsh automotive environments. The PMBus interface allows real-time monitoring of current and voltage, enabling predictive maintenance and fault logging. The device's low 3.5mΩ RON minimizes power loss, improving overall system efficiency. Its stackable feature supports higher current loads by paralleling multiple devices, making it scalable for various vehicle platforms.
Inirekomenda
Infotainment System Power Distribution
In infotainment systems, the TPS1689x-Q1 ensures clean and protected power delivery to sensitive audio and display modules. Its high current capability (20A) supports multiple loads, while the PMBus interface enables dynamic power management. The device's inrush current limiting prevents voltage dips during system startup, protecting downstream components. The small VQFN package fits space-constrained infotainment units, and the stackable feature allows for modular power expansion. The device's protection against short circuits and overloads enhances system reliability, reducing warranty returns.
Inirekomenda
ADAS Power Management
The TPS1689x-Q1 is ideal for ADAS power management, providing reliable protection for radar and camera modules. Its wide input range (9V-80V) accommodates automotive battery voltage variations, and the negative transient tolerance (-5V) protects against inductive spikes. The PMBus interface allows precise control of power-up sequencing, critical for ADAS safety. The device's fast circuit-breaker action protects against short circuits, ensuring system integrity. The AEC-Q100 qualification guarantees performance over the automotive temperature range, making it suitable for under-hood applications.
Inirekomenda
Industrial Power Distribution
In industrial automation, the TPS1689x-Q1 provides robust power distribution with hot-swap capability, allowing safe board insertion in live systems. Its 20A current rating supports high-power loads, and the PMBus interface enables remote monitoring and control in smart factories. The device's programmable fault blanking interval allows customization for different inrush current profiles, preventing nuisance trips. The stackable feature enables scaling to higher currents, making it suitable for large industrial systems. The device's low RON reduces heat generation, improving reliability in enclosed cabinets.
Inirekomenda
Server and Telecom Hot-Swap
The TPS1689x-Q1 is designed for server and telecom hot-swap applications, managing inrush current during board insertion to prevent damage. Its 20A current capability supports high-density power distribution, and the PMBus interface allows real-time telemetry for data center management. The device's circuit-breaker action protects against short circuits, ensuring system uptime. The stackable feature enables parallel operation for higher currents, making it scalable for large server racks. The device's small package and low external component count simplify PCB design, reducing time-to-market.
Inirekomenda
Battery Management Systems
The TPS1689x-Q1 can be used in battery management systems (BMS) for protection and power distribution. Its wide input range (9V-80V) accommodates various battery voltages, and the PMBus interface allows monitoring of current and voltage for state-of-charge estimation. The device's overcurrent protection prevents damage during high-load conditions, and the stackable feature supports parallel battery packs. The AEC-Q100 qualification ensures reliability in automotive BMS applications. The device's low RON minimizes power loss, improving overall system efficiency.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for TPS1689x-Q1 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | TPS1689 | TPS1685x | TPS23521 |
|---|---|---|---|---|
| Package | VQFN | VQFN | VQFN | VQFN |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| PMBus Interface | Yes | Yes | Yes | No |
| AEC-Q100 Qualified | Yes | No | No | No |
| Stackable | Yes | Yes | Yes | No |
Pangunahing mga Pagkakaiba
- AEC-Q100 automotive qualification (kumpara saTPS1689)
- Higher current rating and lower RON (kumpara saTPS1685x)
- Integrated PMBus interface (kumpara saTPS23521)
Talaan ng Disenyo
The TPS1689x-Q1 can dissipate significant power at high currents. For example, at 20A with a 3.5mΩ RON, power dissipation is 1.4W. Ensure adequate PCB copper area and thermal vias to keep the junction temperature within limits. The VQFN package has an exposed pad that should be soldered to a large copper pour for heat spreading.
Place input and output capacitors close to the VIN and VOUT pins to minimize parasitic inductance. Use low-ESR ceramic capacitors with sufficient voltage rating. For high-current paths, use wide traces or copper pours to reduce resistance and inductance. The PMBus lines should be routed with proper termination and isolation if necessary.
Do not exceed the absolute maximum input voltage of 92V. Ensure the transient fault blanking interval is set appropriately to avoid nuisance trips during inrush. The PMBus interface requires proper pull-up resistors and address configuration. Verify the stackable configuration's current sharing and ensure IMON pins are tied together correctly.
Impormasyon ng Pagsunod sa Kautusan
AEC-Q100 qualified per TI product page. RoHS and REACH compliant per TI datasheet.
