Overview
The TPS631000DRLR from Texas Instruments is a high-power-density buck-boost converter designed to provide efficient power supply solutions for a wide range of applications. This device operates in a constant frequency peak current mode control and can automatically switch between boost, buck, or 3-cycle buck-boost modes depending on the input voltage relative to the output voltage. It features a compact SOT-5X3 (DRL) package, making it ideal for space-constrained designs. The TPS631000DRLR is particularly suited for system pre-regulators, voltage stabilizers, and point-of-load regulation in various electronic devices.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Topology | Buck-Boost | Vin (min) (V) | 1.6 |
| Vin (max) (V) | 5.5 | Vout (min) (V) | 1.2 |
| Vout (max) (V) | 5.3 | Switch current limit (typ) (A) | 3 |
| Switching frequency (min) (kHz) | 1800 | Switching frequency (max) (kHz) | 2200 |
| Iq (typ) (mA) | 0.008 | Iout (max) (A) | 2 |
| Operating temperature range (°C) | -40 to 125 | Package | SOT-5X3 (DRL) - 8 pins |
Key Features
- 1.6-V to 5.5-V input voltage range with device input voltage > 1.65 V for start-up
- 1.2-V to 5.3-V output voltage range (adjustable)
- High output current capability: 3-A peak switch current, 2-A output current for VIN ≥ 3 V, VOUT = 3.3 V
- High efficiency over the entire load range
- 8-µA typical quiescent current and power save mode for light to no-load conditions
- Peak current buck-boost mode architecture with seamless mode transition and < 20-mV output ripple
- Forward and reverse current operation and start-up into pre-biased outputs
- Fixed-frequency operation with 2-MHz switching frequency
- Safety and robust operation features including overcurrent protection, short-circuit protection, overtemperature protection, and overvoltage protection
- True shutdown function with load disconnect and forward/backward current limit
- Small solution size with a 1.2-mm × 2.1-mm SOT-583 package, a 1-µH inductor, and one 0805 output capacitor
Applications
The TPS631000DRLR is commonly used in various applications requiring compact and efficient power supply solutions. These include:
- System pre-regulators for smartphones, tablets, and terminals
- Point-of-load regulation for wired sensors, port/cable adapters, and dongles
- Fingerprint and camera sensors in electronic smart locks and IP network cameras
- RF amplifier supply in smart sensors
- Voltage stabilizers for datacom, optical modules, cooling/heating systems
- Battery-powered portable electronic devices where space and power efficiency are critical
Q & A
- What is the input voltage range of the TPS631000DRLR?
The input voltage range is 1.6 V to 5.5 V, with a start-up voltage requirement of > 1.65 V.
- What is the output voltage range of the TPS631000DRLR?
The output voltage range is 1.2 V to 5.3 V and is adjustable.
- What is the maximum output current of the TPS631000DRLR?
The maximum output current is 2 A for VIN ≥ 3 V, VOUT = 3.3 V, and 1.5 A for VIN ≥ 2.7 V, VOUT = 3.3 V.
- What is the quiescent current of the TPS631000DRLR?
The typical quiescent current is 8 µA).
- What are the key safety features of the TPS631000DRLR?
The device includes overcurrent protection, short-circuit protection, overtemperature protection, and overvoltage protection).
- What is the switching frequency of the TPS631000DRLR?
The switching frequency ranges from 1.8 MHz to 2.2 MHz).
- What is the package type and size of the TPS631000DRLR?
The device is packaged in a SOT-5X3 (DRL) package with 8 pins and measures 1.2 mm × 2.1 mm).
- Can the TPS631000DRLR operate in reverse current mode?
- What are the typical applications of the TPS631000DRLR?
- How does the TPS631000DRLR achieve high efficiency?
