Overview
The LM5050MKX-1/NOPB, produced by Texas Instruments, is a high-side OR-ing FET controller designed to operate in conjunction with an external N-Channel MOSFET. This device functions as an ideal diode rectifier when connected in series with a power source, allowing MOSFETs to replace traditional diode rectifiers in power distribution networks. This replacement reduces both power loss and voltage drops associated with passive solutions. The LM5050MKX-1/NOPB is particularly useful in applications requiring active OR-ing of redundant (N+1) power supplies.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Operating Input Voltage Range (VIN) | 5 | 75 | V |
| Transient Capability | 100 | V | |
| Peak Gate Turnoff Current | 2 | A | |
| Response Time to Current Reversal | 50 ns | ||
| Junction Temperature (TJ) | -40 | 125 | °C |
| Package Type | SOT-6 (Thin SOT-23-6) | ||
| Body Size | 2.90 mm × 1.60 mm |
Key Features
- Wide operating input voltage range from 5 V to 75 V, with the ability to withstand transients up to 100 V.
- Charge pump gate driver for external N-Channel MOSFET.
- Fast 50-ns response to current reversal.
- 2-A peak gate turnoff current.
- Minimum VDS clamp for faster turnoff.
- Functional safety capable with documentation available to aid in functional safety system design.
Applications
The LM5050MKX-1/NOPB is primarily used in active OR-ing of redundant (N+1) power supplies. This application is crucial in systems that require high reliability and minimal downtime, such as data centers, telecommunications equipment, and other critical infrastructure.
Q & A
- What is the primary function of the LM5050MKX-1/NOPB?
The LM5050MKX-1/NOPB functions as a high-side OR-ing FET controller, allowing MOSFETs to replace diode rectifiers in power distribution networks.
- What is the operating input voltage range of the LM5050MKX-1/NOPB?
The operating input voltage range is from 5 V to 75 V.
- How does the LM5050MKX-1/NOPB handle current reversal?
The device responds to current reversal with a fast 50-ns response, quickly discharging the MOSFET gate through a strong discharge transistor.
- What is the peak gate turnoff current of the LM5050MKX-1/NOPB?
The peak gate turnoff current is 2 A.
- What type of package does the LM5050MKX-1/NOPB come in?
The device comes in a SOT-6 (Thin SOT-23-6) package.
- What are the typical applications of the LM5050MKX-1/NOPB?
The device is typically used in active OR-ing of redundant (N+1) power supplies, particularly in systems requiring high reliability such as data centers and telecommunications equipment.
- How does the LM5050MKX-1/NOPB improve power efficiency?
By using an N-Channel MOSFET instead of traditional diodes, the LM5050MKX-1/NOPB reduces both power loss and voltage drops in power distribution networks.
- What is the junction temperature range of the LM5050MKX-1/NOPB?
The junction temperature range is from -40°C to 125°C.
- Is the LM5050MKX-1/NOPB functional safety capable?
Yes, the device is functional safety capable, with documentation available to aid in functional safety system design.
- How does the LM5050MKX-1/NOPB handle transient voltages?
The device can withstand transients up to 100 V.
