Overview
The TPSM82480MOPT from Texas Instruments is a high-efficiency synchronous step-down DC-DC converter module designed for low-profile point-of-load power supplies. This module is part of the TPSM82480 series and is optimized for applications requiring compact, high-performance power conversion. It operates with an input voltage range of 2.4 V to 5.5 V and can output voltages from 0.6 V to 5.5 V, making it versatile for various power supply needs. The module features a 2-phase peak current control topology, which ensures high efficiency and reduced pulse current noise.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.4 | 5.5 | V | |
| Output Voltage Range | 0.6 | 5.5 | V | |
| Maximum Output Current | 6 | A | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Quiescent Current (EN = High, VIN ≥ 3 V, IOUT = 0 mA) | 23 | 38 | µA | |
| Shutdown Current (EN = Low, TJ = -40°C to +85°C) | 0.5 | 18.5 | µA | |
| Undervoltage Lockout Threshold (Falling Input Voltage) | 2.2 | 2.3 | 2.4 | V |
| Thermal Shutdown Temperature | 160 | °C | ||
| Switching Frequency | 2.2 | MHz |
Key Features
- Ultra Small Form Factor: The module measures 3.6 × 7.9 × 1.55 mm, making it ideal for space-constrained applications.
- CISPR11 Class B Compliant: Ensures electromagnetic compatibility.
- Feedback Voltage Accuracy: ±1% in PWM mode and ±1.4% to 2.5% in Power Save Mode.
- Output Voltage Select: Allows for two user-defined output voltage values using the VSEL pin.
- Phase-Shifted Operation: Reduces pulse current noise by running two phases out-of-phase.
- Automatic Power Save Mode or Forced PWM Option: Maintains high efficiency down to very light loads or forces continuous PWM operation.
- Adjustable Soft-Start and Tracking: Sets the output voltage rise time using an external capacitor.
- Power Good and Thermal Good Outputs: Provides signals to indicate when the output voltage has reached its nominal value and when the junction temperature exceeds a safe threshold.
- Protection Features: Includes overcurrent, short-circuit, over-temperature, and undervoltage lockout protections.
- Active Output Discharge: Provides an active discharge path when the device is switched off.
Applications
- Low Profile Point-of-Load Supply: Ideal for applications requiring compact power conversion solutions.
- Aerospace and Defense: Suitable for high-reliability and space-constrained military and aerospace applications.
- Factory Automation and Control: Used in industrial automation systems where high efficiency and reliability are crucial.
- Optical Modules: Applicable in optical communication systems requiring stable and efficient power supplies.
- Professional Audio, Video, and Signage: Used in professional audio and video equipment as well as digital signage where power efficiency and reliability are important.
Q & A
- What is the input voltage range of the TPSM82480MOPT?
The input voltage range is from 2.4 V to 5.5 V.
- What is the maximum output current of the TPSM82480MOPT?
The maximum output current is 6 A.
- What is the switching frequency of the TPSM82480MOPT?
The switching frequency is typically 2.2 MHz.
- Does the TPSM82480MOPT have built-in protection features?
Yes, it includes overcurrent, short-circuit, over-temperature, and undervoltage lockout protections.
- How does the Power Save Mode work in the TPSM82480MOPT?
The Power Save Mode maintains high efficiency down to very light loads by automatically adding or shedding phases based on the actual load.
- What is the purpose of the VSEL pin in the TPSM82480MOPT?
The VSEL pin allows for selecting between two user-defined output voltage values.
- What is the thermal shutdown temperature of the TPSM82480MOPT?
The thermal shutdown temperature is typically 160°C with a hysteresis of approximately 10°C.
- Does the TPSM82480MOPT have an active output discharge feature?
Yes, it provides an active discharge path when the device is switched off.
- What is the quiescent current of the TPSM82480MOPT when enabled?
The quiescent current is typically 23 µA when EN is high and VIN is greater than or equal to 3 V.
- Is the TPSM82480MOPT CISPR11 Class B compliant?
Yes, it is CISPR11 Class B compliant.
