Overview
The LM5050-2 High Side OR-ing FET Controller, produced by Texas Instruments, is designed to operate in conjunction with an external N-Channel MOSFET as an ideal diode rectifier in power distribution networks. This controller replaces traditional diode rectifiers, reducing power loss and voltage drops. It supports a wide operating input voltage range from +6V to +75V and can withstand transients up to +100V, making it suitable for various power supply applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage Range | +6V | +75V | V | |
| Transient Capability | +100V | V | ||
| OFF Pin Voltage | 0V | 5.5V | V | |
| nFGD Voltage (Off) | 0V | 5.5V | V | |
| Junction Temperature Range | -40°C | +125°C | °C | |
| Peak Gate Turn-off Current | 2A | A | ||
| Response to Current Reversal | 50ns | ns | ||
| Package | SOT-6 (Thin SOT23-6) |
Key Features
- Wide Operating Input Voltage Range: +6V to +75V
- +100 Volt Transient Capability
- Charge Pump Gate Driver for External N-Channel MOSFET
- MOSFET Diagnostic Test Mode
- Fast 50ns Response to Current Reversal
- 2A Peak Gate Turn-off Current
- Minimum VDS Clamp for Faster Turn-off
- Package: SOT-6 (Thin SOT23-6)
Applications
The LM5050-2 is typically used in active OR-ing of redundant (N+1) power supplies. It is suitable for applications where high reliability and minimal power loss are critical, such as in data centers, telecommunications equipment, and other high-availability systems. The controller can also be used in hot swap voltage control and other power distribution networks where diode rectifiers need to be replaced for efficiency and reliability reasons.
Q & A
- What is the operating input voltage range of the LM5050-2?
The operating input voltage range of the LM5050-2 is from +6V to +75V.
- What is the transient capability of the LM5050-2?
The LM5050-2 can withstand transients up to +100V.
- What type of MOSFET does the LM5050-2 support?
The LM5050-2 supports external N-Channel MOSFETs.
- What is the purpose of the MOSFET Diagnostic Test Mode?
The MOSFET Diagnostic Test Mode allows the system controller to test for shorted MOSFETs.
- How quickly does the LM5050-2 respond to current reversal?
The LM5050-2 responds to current reversal in typically 50ns.
- What is the peak gate turn-off current of the LM5050-2?
The peak gate turn-off current of the LM5050-2 is 2A.
- What package type is the LM5050-2 available in?
The LM5050-2 is available in a SOT-6 (Thin SOT23-6) package.
- What is the junction temperature range of the LM5050-2?
The junction temperature range of the LM5050-2 is from -40°C to +125°C.
- What are typical applications of the LM5050-2?
The LM5050-2 is typically used in active OR-ing of redundant (N+1) power supplies, hot swap voltage control, and other high-availability systems.
- How does the LM5050-2 improve power distribution efficiency?
The LM5050-2 improves power distribution efficiency by replacing diode rectifiers with MOSFETs, reducing power loss and voltage drops.
