Overview
The TPS543820RPYR from Texas Instruments is a high-efficiency, 8-A synchronous buck converter designed for a wide range of applications. This device employs an internally-compensated, fixed-frequency Advanced Current Mode (ACM) control, allowing for high efficiency and stable operation. It operates within an input voltage range of 4 V to 18 V and can produce output voltages from 0.5 V to 7 V. The converter is housed in a compact 2.5-mm × 3-mm, 14-pin VQFN-HR package, making it ideal for designs requiring a small solution size and high efficiency at high frequencies.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 4 | - | 18 | V |
| Output Voltage (VOUT) | 0.5 | - | 7 | V |
| Output Current (IOUT) | - | - | 8 | A |
| Operating Junction Temperature (TJ) | -40 | - | 150 | °C |
| Switching Frequency | 500 kHz | - | 2.2 MHz | - |
| Package Type | VQFN-HR (14-pin) | - | - | - |
| Package Size | 2.5 mm × 3 mm | - | - | - |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 58.9 | °C/W |
Key Features
- Fixed-frequency, internally-compensated Advanced Current Mode (ACM) control.
- Integrated 25-mΩ and 6.5-mΩ N-channel MOSFETs for high efficiency.
- High accuracy voltage reference.
- Selectable soft start times and monotonic start-up into pre-biased outputs.
- Selectable current limits and adjustable undervoltage lockout (UVLO) through the EN pin.
- Full suite of fault protections, including thermal shutdown and overcurrent protection.
- External clock synchronization capability using the SYNC pin.
- Compact 2.5-mm × 3-mm, 14-pin VQFN-HR package with 0.5-mm pitch.
Applications
- Wireless infrastructure and wired communications equipment.
- Optical and fiber networks.
- Test and measurement equipment.
- Medical and healthcare devices.
Q & A
- What is the input voltage range of the TPS543820RPYR?
The input voltage range is from 4 V to 18 V.
- What is the maximum output current of the TPS543820RPYR?
The maximum output current is 8 A.
- What is the operating junction temperature range of the TPS543820RPYR?
The operating junction temperature range is from -40°C to 150°C.
- Can the switching frequency of the TPS543820RPYR be synchronized to an external clock?
- What type of package does the TPS543820RPYR come in?
The device is housed in a 2.5-mm × 3-mm, 14-pin VQFN-HR package.
- What are some of the key features of the TPS543820RPYR?
Key features include integrated MOSFETs, high accuracy voltage reference, selectable soft start times, and a full suite of fault protections.
- What are some typical applications for the TPS543820RPYR?
Typical applications include wireless infrastructure, optical and fiber networks, test and measurement equipment, and medical devices.
- How does the Advanced Current Mode (ACM) control in the TPS543820RPYR enhance its performance?
The ACM control provides stable static and transient operation without complex external compensation, enabling the use of low-ESR output capacitors and a high signal-to-noise ratio.
- What is the thermal shutdown threshold of the TPS543820RPYR?
The thermal shutdown threshold is between 165°C and 175°C.
- Does the TPS543820RPYR support monotonic start-up into pre-biased outputs?
