TPS26633PWPT - 60V, 6A eFuse w/ Surge Protection | Texas Instruments
Référence : TPS26633PWPT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.35 | $53,50 |
| 100 | $4.76 | $476,00 |
| 500 | $4.28 | $2 140,00 |
| 1 000 | $3.81 | $3 810,00 |
TPS26633PWPT Présentation
An eFuse (electronic fuse) is a semiconductor-based protection device that replaces traditional PTC fuses, thermistors, and discrete hot-swap controller plus FET combinations. As a member of the broader hot-swap controller and power-path protection IC category within power management, an eFuse integrates current sensing, MOSFET switching, and fault recovery logic into one package, giving system designers faster response, programmable behavior, and resettable protection that does not require manual replacement after a fault event. Compared with a fuse + TVS + load-switch stack, a single eFuse reduces board area, improves diagnostic capability, and enables I2C telemetry or pin-strapped configuration.
Key features of the TPS26633PWPT include a 31-mΩ on-resistance integrated N-channel MOSFET, programmable current limit from 0.6 A to 6 A using an external resistor, output power limiting (constant-power mode), surge protection with adjustable slew rate, integrated thermal shutdown, and fault output indication. The device also offers reverse-current blocking when paired with an external B-FET driver pin, and input under-voltage lockout with programmable thresholds.
The TPS26633 architecture uses a charge-pump-driven N-channel MOSFET, a high-side current-sense amplifier, and a state machine that handles inrush, steady-state, and fault conditions. Its constant-power foldback mode allows higher transient currents for capacitive loads while preventing SOA violations at elevated input rail voltages, a behavior that traditional fuses and PTCs cannot emulate.
Typical applications include industrial 24-V PLC and sensor power rails, factory automation I/O modules, building automation controllers, telecom secondary-side hot-swap, and battery management systems where a resettable, programmable protection element is preferred over a one-shot fuse. When laying out the PCB, place the eFuse close to the input connector to maximize surge absorption, and provide a thermal copper pour under the PowerPAD exposed pad to keep junction temperature within the 150 °C maximum under sustained fault events.
Alternatives de remplacement direct pour TPS26633PWPT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec TPS26633PWPT (même facteur de forme et même empreinte) — différant par Operating Temperature Range, Output Power Limiting, Package, Thermal Shutdown.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TPS26633PWPR
✅ Remplacement direct✓ En stock
$2.4 / unité
Voir la fiche technique →TPS26632PWPT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS26635PWPT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS26630PWPT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS26631PWPT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TPS26633PWPT Spécifications
| Fonction | Electronic fuse (eFuse) with output power limiting and surge protection |
| Plage de tension d'entrée | 4.5 V to 60 V |
| Output Current Range | 0.6 A to 6 A (programmable) |
| On-Resistance (RDS(on)) | 31 mΩ (integrated FET) |
| Output Power Limiting | Yes (constant-power foldback mode) |
| Surge Protection | Yes (adjustable slew rate) |
| Reverse-Current Blocking | Yes (via external B-FET driver) |
| Arrêt thermique | Yes (integrated) |
| Fault Output | Yes (FLT pin, active-low) |
| Plage de température de fonctionnement | -40 °C to +125 °C |
| Boîtier | 20-pin HTSSOP (PWP) with PowerPAD |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| UVLO | Programmable (external resistor divider) |
Configuration des broches de TPS26633PWPT
| Broche 1 | VIN — Input supply voltage (4.5 V to 60 V) |
| Broche 2 | VIN — Input supply voltage (4.5 V to 60 V) |
| Broche 3 | VIN — Input supply voltage (4.5 V to 60 V) |
| Broche 4 | GND — Ground |
| Broche 5 | GND — Ground |
| Broche 6 | ILIM — Current limit programming (resistor to GND) |
| Broche 7 | dVdT — Inrush slew rate programming (capacitor to GND) |
| Broche 8 | UVLO/EN — Undervoltage lockout / enable input |
| Broche 9 | FLT — Fault output indicator (active-low, open-drain) |
| Broche 10 | PGOOD — Power good indicator (open-drain) |
| Broche 11 | B-FET — External N-channel FET gate driver for reverse-current blocking |
| Broche 12 | MODE — Operating mode selection (current-limit vs. constant-power) |
| Broche 13 | TIMER — Fault timer programming (capacitor to GND) |
| Broche 14 | VOUT — Regulated output voltage |
| Broche 15 | VOUT — Regulated output voltage |
| Broche 16 | VOUT — Regulated output voltage |
| Broche 17 | VOUT — Regulated output voltage |
| Broche 18 | SENSE — Current sense input |
| Broche 19 | NC — Not connected (per datasheet) |
| Broche 20 | NC — Not connected (per datasheet) |
Applications typiques
TPS26633PWPT convient pour 6 applications: Industrial 24-V PLC Power-Path Protection, Factory Automation I/O Module Hot-Swap, Building Automation Controller Power Input, Telecom Secondary-Side Hot-Swap, Battery Management System Protection, Motor Drive Auxiliary Rail Protection.
Industrial 24-V PLC Power-Path Protection
The TPS26633PWPT fits 24-V industrial PLC power rails because of its 4.5-V to 60-V input tolerance, which absorbs 24-V bus transients and IEC 61000-4-2 surge events without a front-end TVS. Its 0.6-A to 6-A programmable current limit, set by a single ILIM resistor, lets one stock SKU cover I/O module bias, sensor rails, and small actuator power paths. Placed at the input side of the PLC card, the device's 31-mΩ on-resistance keeps continuous conduction loss low while the constant-power foldback prevents SOA violation during capacitive load inrush. Compared with a discrete fuse + load switch stack, the integrated eFuse reduces BOM count, board area, and field-replacement costs across the PLC product family.
Recommandé
Factory Automation I/O Module Hot-Swap
Factory automation I/O modules require hot-swap capability so a single card failure does not bring down an entire backplane, and the TPS26633PWPT meets this need through its adjustable dVdT timer and programmable inrush slew rate. The integrated 31-mΩ MOSFET keeps the live insertion transient within the backplane's capacitance budget, while the FLT output drives a system-level diagnostic LED or isolator. According to the TI TPS2663x datasheet, the device's constant-power foldback mode prevents the FET from exceeding its SOA when hot-plugging into heavily discharged bulk capacitance. For I/O modules with reverse-polarity concerns, the B-FET driver pin enables reverse-current blocking with a single external N-channel MOSFET, eliminating the need for a Schottky blocking diode in series with the load.
Recommandé
Building Automation Controller Power Input
Building automation controllers often share a 24-V AC-rectified rail that must tolerate miswiring, field surges, and short-to-ground faults without damage, and the TPS26633PWPT addresses all three with its integrated protection suite. The wide 4.5-V to 60-V input range covers rectified 24-VAC plus tolerance, while the programmable current limit prevents the controller PCB from drawing excessive current during a field short, which would otherwise trip upstream breakers and disable lighting or HVAC zones. According to TI datasheet surge curves, the device's adjustable output slew rate minimizes inrush into downstream bulk capacitance, reducing stress on electrolytic capacitors and improving controller MTBF. The PowerPAD package enables the part to handle continuous 6-A loads without external heatsinking, important for fan-less building automation enclosures.
Recommandé
Telecom Secondary-Side Hot-Swap
On telecom 48-V secondary-side distribution boards, the TPS26633PWPT provides hot-swap and overcurrent protection at the rail that feeds isolated DC-DC converters and PoE subsystems. Its 60-V maximum input voltage tolerates the upper bound of a 48-V telecom rail with margin, and its integrated surge protection rejects line transients that propagate through the isolation transformer. Placed immediately after the input fuse or OR-ing controller, the device limits inrush into downstream bulk capacitors to a programmable dVdT rate, which is essential for parallel redundant power architectures where staggered startup prevents back-feeding. According to TI documentation, the constant-power foldback also enables short-duration current surges above 6 A to charge large capacitive loads, then automatically folds back to the safe SOA region.
Recommandé
Battery Management System Protection
In battery management systems, the TPS26633PWPT serves as a resettable protection element between the battery stack and downstream DC-DC converters, replacing legacy automotive fuses with a programmable, diagnostic-rich alternative. Its 4.5-V to 60-V input range covers 12-V, 24-V, and 48-V battery architectures, while the 0.6-A to 6-A programmable current limit protects wiring harnesses from sustained overcurrent conditions. According to TI documentation, the FLT output pin can be wired to the BMS controller to log fault events, enabling predictive maintenance rather than reactive fuse replacement. The B-FET driver also supports reverse-polarity protection when wired with an external N-channel MOSFET, critical in battery systems where miswiring during service is a real-world hazard.
Recommandé
Motor Drive Auxiliary Rail Protection
Motor drive auxiliary rails (24-V logic, brake, fan, and encoder supplies) benefit from TPS26633PWPT protection because the device's adjustable inrush and constant-power foldback prevent nuisance trips during motor startup events. The 60-V maximum rating tolerates back-EMF transients that couple through shared harnesses, and the integrated thermal shutdown protects the eFuse itself during sustained overload conditions like a stalled fan. Compared with discrete PTC thermistors, the TPS26633PWPT recovers automatically once the fault clears and the user retries, avoiding manual component replacement in field-deployed motor cabinets. According to TI datasheet curves, the device's surge protection also rejects the inductive kick seen when nearby relay coils release, a common cause of auxiliary rail resets in industrial machinery.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TPS26633PWPT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TPS26633PWPR | TPS26632PWPT | TPS26635PWPT | TPS26630PWPT | TPS26631PWPT |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 20-HTSSOP (PWP) PowerPAD | 20-HTSSOP (PWR) PowerPAD | 20-HTSSOP (PWP) PowerPAD | 20-HTSSOP (PWP) PowerPAD | 20-HTSSOP (PWP) PowerPAD | 20-HTSSOP (PWP) PowerPAD |
| Input Voltage Range | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V | 4.5 V to 60 V |
| Output Current Range | 0.6 A to 6 A | 0.6 A to 6 A | 0.6 A to 6 A | 0.6 A to 6 A | 0.6 A to 6 A | 0.6 A to 6 A |
| On-Resistance (RDS(on)) | 31 mΩ | 31 mΩ | 31 mΩ | 31 mΩ | 31 mΩ | 31 mΩ |
| Output Power Limiting | Yes (constant-power foldback) | Yes (constant-power foldback) | Yes (constant-power foldback) | Yes (constant-power foldback) | No | No |
| Surge Protection | Yes (adjustable slew rate) | Yes | Yes | Yes | No | No |
| Reverse-Current Blocking (B-FET) | Yes | Yes | Yes | Yes | Yes | Yes |
| Fault Output (FLT pin) | Yes | Yes | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- Output power limiting with constant-power foldback (vs TPS26630PWPT)
- Integrated surge protection with adjustable slew rate (vs TPS26631PWPT)
- 60-V maximum input rating with reverse-current blocking (vs TPS26633PWPR (reel variant))
Notes de conception
At VIN = 24 V and full 6 A continuous load, power dissipation is approximately P = I² × R = 36 × 0.031 = 1.12 W. With the 20-pin HTSSOP PowerPAD package on a standard JEDEC 4-layer test PCB (θJA ≈ 35 °C/W per TI datasheet curves), junction temperature rises roughly 39 °C above a 25 °C ambient, well within the 150 °C maximum. Estimated: for sustained 6 A operation in a sealed enclosure with no airflow, verify with a thermocouple on the PowerPAD copper pour, and add thermal vias under the exposed pad for improved heat transfer.
Per the TI TPS2663x datasheet, place the device as close as possible to the input connector and provide a substantial copper pour connected to the PowerPAD exposed pad. Use wide VIN and VOUT traces to handle 6 A continuous current without significant voltage drop, and place the ILIM resistor close to the ILIM pin to minimize noise coupling. Add a 0.1 µF ceramic bypass capacitor directly at VIN and a bulk decoupling capacitor on VOUT sized for the expected inrush charge. The PCB footprint must match TI's recommended land pattern for the HTSSOP-20 PowerPAD to ensure correct thermal and electrical performance.
Common pitfalls when using the TPS26633PWPT include: (1) omitting the PowerPAD solder connection, which causes the device to overheat at high loads; (2) selecting an ILIM resistor with insufficient voltage or temperature rating, which can drift the programmed current limit; (3) failing to add a TIMER capacitor, which disables the device's fault retry timing; (4) ignoring the B-FET driver's external MOSFET requirements, which disables reverse-current blocking. Per TI datasheet guidance, also verify that the dVdT capacitor value matches the application's inrush budget, because a too-small value can exceed SOA on large capacitive loads.
Informations de conformité
RoHS and REACH compliance per Texas Instruments product page documentation. Not AEC-Q100 qualified per distributor listings; for automotive-grade designs consult TI's Q1 suffix variants. Lead-free and halogen-free per TI environmental compliance information.
