Overview
The TPS62913RPUR is a high-efficiency, low-noise, and low-ripple synchronous buck converter produced by Texas Instruments. This device is part of the TPS6291x family and is designed for noise-sensitive applications. It operates at a fixed switching frequency of either 2.2 MHz or 1 MHz and can be synchronized to an external clock. The converter is ideal for applications that require low output noise and ripple, such as high-speed ADCs, clock and jitter cleaners, serializers, deserializers, and radar systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.0 to 17 | V |
| Output Voltage Range | 0.8 to 5.5 | V |
| Output Current | 3 | A |
| Switching Frequency | 1 MHz or 2.2 MHz | Hz |
| Output Noise (1/f noise) | < 20 µV RMS (100 Hz to 100 kHz) | µV RMS |
| Output Voltage Ripple | < 10 µV RMS after ferrite bead | µV RMS |
| PSRR | > 65 dB (up to 100 kHz) | dB |
| Operating Temperature Range | -40 to 150 | °C |
| Package Type | VQFN-HR (RPU) | |
| Number of Pins | 10 | |
| Package Size | 2 mm x 2 mm | mm |
Key Features
- Low output 1/f noise < 20 µV RMS (100 Hz to 100 kHz)
- Low output voltage ripple < 10 µV RMS after ferrite bead
- High PSRR of > 65 dB (up to 100 kHz)
- 2.2-MHz or 1-MHz fixed frequency peak current mode control
- Synchronizable with external clock (optional)
- Integrated loop compensation supports ferrite bead for second stage L-C filter with 30-dB attenuation (optional)
- Spread spectrum modulation (optional) to reduce mixing spurs
- Filtered internal voltage reference for low-noise output similar to low-noise LDOs
Applications
The TPS62913RPUR is ideal for noise-sensitive applications, including:
- High-speed ADCs
- Clock and jitter cleaners
- Serializers and deserializers
- Radar applications
Q & A
- What is the input voltage range of the TPS62913RPUR?
The input voltage range is from 3.0 V to 17 V.
- What are the available switching frequencies for the TPS62913RPUR?
The device operates at fixed switching frequencies of either 1 MHz or 2.2 MHz.
- What is the maximum output current of the TPS62913RPUR?
The maximum output current is 3 A.
- How does the TPS62913RPUR reduce output voltage ripple?
The device reduces output voltage ripple through the use of a switching frequency and an optional second-stage L-C filter, such as a ferrite bead.
- What is the PSRR of the TPS62913RPUR?
The PSRR is greater than 65 dB up to 100 kHz.
- Can the TPS62913RPUR be synchronized with an external clock?
Yes, the device can be synchronized with an external clock.
- What is the purpose of the spread spectrum modulation in the TPS62913RPUR?
The spread spectrum modulation spreads the DC/DC switching frequency over a wider span, reducing mixing spurs.
- What is the operating temperature range of the TPS62913RPUR?
The operating temperature range is from -40°C to 150°C.
- What package type and pin count does the TPS62913RPUR use?
The device is packaged in a VQFN-HR (RPU) package with 10 pins.
- What are some typical applications for the TPS62913RPUR?
Typical applications include high-speed ADCs, clock and jitter cleaners, serializers, deserializers, and radar systems.
