Texas Instruments TPS62916E

Description

The TPS62916E device is a highly-efficient, low noise, and low ripple current mode synchronous buck converter. The device is designed for noise sensitive applications that normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, de-serializer, and radar applications.To reduce the output voltage ripple, the device loop compensation is designed to operate with an optional second-stage ferrite bead L-C filter. Lowfrequency noise levels, similar to a low-noise LDO, are further achieved by filtering the internal voltage reference with a capacitor connected to the NR/SS pin. Combined, these features allow for an output voltage ripple below 10µVRMS.The device operates at a fixed switching frequency of 2.2MHz, 1.4MHz, or 1MHz, and can be synchronized to an external clock. An optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs

Features

Low output 1/f noise < 20µVRMS(100Hz to 100kHz)

• Low output voltage ripple < 10µVRMS after ferritebead
• High PSRR of > 65dB (up to 100kHz)
• 2.2MHz, 1.4MHz, or 1.0MHz fixed frequency peakcurrent mode control
• Synchronizable with external clock (optional)
• Integrated loop compensation supports ferritebead for second stage L-C filter with 30dBattenuation (optional)
• Spread spectrum modulation (optional)
• 3.0V to 17V input voltage range
• 0.8V to 5.5V output voltage range
• 25mΩ/7mΩ RDSon
• Output voltage accuracy of ±1% over temperature
• Precise enable input allows– User-defined undervoltage lockout– Exact sequencing
• Adjustable soft start
• Power-good output
• Output discharge (optional)
• –55°C to 150°C junction temperature range
• 2. mm × 3.0mm QFN with 0.5mm pitch
• Create a custom design using the TPS62916Ewith the WEBENCH® Power Designer

Typical applications

• Aerospace and defense (radar, avionics)
• Medical
• Telecom infrastructure
• Test and measurement

More information

• Datasheet
• IC product information