Overview
The TPS2120YFPR, produced by Texas Instruments, is a Dual-Input, Single-Output (DISO) Power Multiplexer (MUX) designed for systems with multiple power sources. This device automatically detects, selects, and seamlessly transitions between available inputs, making it ideal for applications requiring redundant power sources and uninterrupted power supply.
The TPS2120YFPR operates over a wide voltage range of 2.8 V to 22 V, with an absolute maximum input voltage of 24 V. It features low RON resistance, adjustable overvoltage and priority supervisors, and active current limiting to protect against overcurrent events.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.8 V to 22 V |
| Absolute Maximum Input Voltage | 24 V |
| RON Resistance (Typical) | 62 mΩ |
| Output Current Limit | 1 A – 3 A |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | DSBGA (YFP), 20 pins |
| Package Quantity | Carrier 3,000 (LARGE T&R) |
| Low Iq from Enabled Input | 200 µA (Typical) |
| Low Iq from Disabled Input | 10 µA (Typical) |
Key Features
- Wide operating range: 2.8 V to 22 V
- Low RON resistance: 62 mΩ (typical)
- Adjustable overvoltage supervisor (OVx) with accuracy < ±5%
- Adjustable priority supervisor (PR1) with accuracy < ±5%
- Output current limit (ILM) adjustable with a single external resistor: 1 A – 3 A
- Channel status indication (ST)
- Adjustable input settling time (SS) and output soft start time (SS)
- Over temperature protection (OTP)
- Ideal Diode operation for seamless switchover between input sources
- Manual input source selection and fast output switchover (for TPS2121)
Applications
The TPS2120YFPR is well-suited for a variety of systems that require multiple power sources, such as:
- Redundant power systems to ensure uninterrupted power supply
- Systems requiring ORing and source selection operations
- Applications needing seamless switchover between power sources
- Systems that require protection against overcurrent and overvoltage events
- Industrial, automotive, and medical devices where reliable power management is critical
Q & A
- What is the operating voltage range of the TPS2120YFPR?
The TPS2120YFPR operates over a voltage range of 2.8 V to 22 V.
- What is the typical RON resistance of the TPS2120YFPR?
The typical RON resistance is 62 mΩ.
- How is the output current limit adjusted on the TPS2120YFPR?
The output current limit can be adjusted with a single external resistor.
- What is the purpose of the ST pin on the TPS2120YFPR?
The ST pin provides channel status indication, showing whether IN1 or IN2 is powering the output.
- Does the TPS2120YFPR support manual input source selection?
- What is the operating temperature range of the TPS2120YFPR?
The operating temperature range is -40°C to 125°C.
- How does the TPS2120YFPR protect against overcurrent events?
The device uses active current limiting during startup and switchover to protect against overcurrent events.
- Can the TPS2120YFPR be used in systems requiring fast switchover between power sources?
- What is the purpose of the OVx pins on the TPS2120YFPR?
The OVx pins allow for independent output overvoltage protection, enabling the adjustment of overvoltage thresholds for each input channel.
- How does the TPS2120YFPR handle reverse current during switchover?
The device controls the voltage drop to block reverse current before it occurs, ensuring uninterrupted power to the load.
