TPS2393 - -48V Hot Swap Controller | Texas Instruments
N.º de pieza: TPS2393 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.56 | $25,60 |
| 100 | $2.28 | $228,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.83 | $1.830,00 |
TPS2393 Descripción general
A hot swap controller is a power management IC that safely inserts or removes a circuit board from a live backplane without causing glitches or damage. It manages the inrush current during insertion, monitors the load current, and disconnects the load on fault conditions. In the power management hierarchy, a hot swap controller sits between the system power bus and the load, acting as an intelligent switch and protector.
Key features of the TPS2393 include a wide input voltage range of -20 V to -80 V, a programmable inrush current limit, and an active-low fault output for system monitoring. The device also provides a programmable undervoltage lockout (UVLO) and overvoltage protection, ensuring robust operation in harsh telecom environments. The TPS2393 is designed for -48-V systems, which are standard in telecommunications and networking equipment.
The TPS2393 uses a charge pump to drive an external N-channel MOSFET, allowing low-loss power path control. It includes a programmable timer for fault retry and a latch-off mode for persistent faults. The device is specified for the industrial temperature range (-40°C to +85°C) and is RoHS compliant. The 14-pin TSSOP package is compact and suitable for space-constrained designs.
Typical applications include telecom line cards, base station power distribution, server backplanes, and industrial -48-V power distribution systems. The TPS2393 is ideal for any system requiring safe board insertion and removal in a -48-V environment.
When designing with the TPS2393, ensure the external MOSFET is properly sized for the maximum load current and that the sense resistor is selected to set the desired current limit. The UVLO and fault timer resistors should be chosen to match the system's power-up requirements.
Alternativas directas para TPS2393 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con TPS2393 (mismo factor de forma y huella) — difiere en Operating Temperature Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
TPS2393A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS2392
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS2393PWR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS2393PW
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TPS2393 Valores máximos y características eléctricas
| Supply Voltage Range | -20 V to -80 V |
| Absolute Maximum Voltage | -100 V |
| Number of Channels | 1 |
| Encapsulado | 14-TSSOP |
| Rango de temperatura de funcionamiento | -40°C to +85°C |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Inrush Current Limit | Programmable |
| Fault Output | Active-low |
| Undervoltage Lockout | Programmable |
| Overvoltage Protection | Yes |
| Fault Timer | Programmable |
| Latch-off Mode | Yes |
| Charge Pump | Internal |
| External MOSFET Drive | Yes |
Configuración de pines de TPS2393
| Pin 1 | VIN — Negative input supply voltage |
| Pin 2 | GATE — Gate drive for external MOSFET |
| Pin 3 | SENSE — Current sense input |
| Pin 4 | FAULT — Active-low fault output |
| Pin 5 | UVLO — Undervoltage lockout programming |
| Pin 6 | OVLO — Overvoltage lockout programming |
| Pin 7 | TIMER — Fault timer programming |
| Pin 8 | GND — Ground |
| Pin 9 | VOUT — Output voltage to load |
| Pin 10 | NC — No connect |
| Pin 11 | NC — No connect |
| Pin 12 | NC — No connect |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
Aplicaciones típicas
TPS2393 es adecuado para 6 aplicacións: Telecom Line Cards, Base Station Power Distribution, Server Backplanes, Industrial -48V Power Distribution, Networking Equipment, Battery Backup Systems.
Telecom Line Cards
The TPS2393 is ideal for telecom line cards operating on -48V backplanes. Its wide input range of -20V to -80V accommodates voltage variations, and the programmable inrush current limit prevents glitches during board insertion. The fault output enables system monitoring, ensuring reliable operation in central office equipment.
Recomendado
Base Station Power Distribution
In cellular base stations, the TPS2393 manages -48V power distribution to RF modules and digital boards. Its overvoltage protection and programmable fault timer safeguard against transients, while the charge pump drives an external MOSFET for efficient power path control. The industrial temperature range ensures operation in outdoor enclosures.
Recomendado
Server Backplanes
The TPS2393 enables safe hot-swapping of server blades in data centers. Its -48V compatibility suits telecom-style backplanes, and the programmable current limit prevents voltage droop during insertion. The latch-off mode protects against persistent faults, reducing downtime in high-availability systems.
Recomendado
Industrial -48V Power Distribution
For industrial control systems using -48V power, the TPS2393 provides robust hot swap protection. Its wide input range and overvoltage protection handle industrial transients, while the programmable UVLO ensures proper power-up sequencing. The 14-TSSOP package is suitable for compact PLC and industrial PC designs.
Recomendado
Networking Equipment
In routers and switches, the TPS2393 manages -48V power for line cards and interface modules. Its fault output and programmable timer enable system-level monitoring and protection. The device's ability to withstand -100V spikes ensures reliability in environments with power surges.
Recomendado
Battery Backup Systems
The TPS2393 is used in -48V battery backup systems to safely connect and disconnect battery banks. Its programmable current limit and overvoltage protection manage charging and discharging, while the latch-off mode prevents damage from sustained faults. The wide input range accommodates battery voltage variations.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TPS2393 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TPS2393A | TPS2392 | TPS2393PWR |
|---|---|---|---|---|
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Supply Voltage Range | -20V to -80V | -20V to -80V | -20V to -80V | -20V to -80V |
| Insertion Detection Delay | No | Yes | No | No |
| Overvoltage Protection | Yes | Yes | No | Yes |
| Programmable Fault Timer | Yes | Yes | No | Yes |
| Packaging | Tube | Tube | Tube | Tape & Reel |
| Price (1pc) | $2.85 | $2.95 | $2.50 | $2.85 |
Diferenciadores clave
- Wide input voltage range of -20V to -80V (frente a TPS2392)
- Overvoltage protection and programmable fault timer (frente a TPS2392)
- Insertion and Removal Detection Delay (frente a TPS2393A)
Notas de diseño
The TPS2393 is designed for -48V systems. Ensure the external MOSFET is rated for the maximum input voltage plus spikes (-100V). Use a sense resistor with appropriate power rating to handle the inrush current. The charge pump provides gate drive, but the MOSFET gate capacitance should be considered for switching speed.
Place the sense resistor close to the SENSE pin to minimize parasitic inductance. Use Kelvin connections for accurate current sensing. The GATE pin should have a low-inductance path to the MOSFET gate. Provide adequate copper area for heat dissipation from the MOSFET.
Do not exceed the absolute maximum voltage of -100V. Ensure the UVLO and OVLO resistors are set correctly to avoid false triggering. The fault timer should be programmed to match the system's inrush time to prevent nuisance trips. Verify the latch-off mode behavior for your application.
Información de cumplimiento
RoHS compliant per TI product page. Not AEC-Q100 qualified.
