0
ACTIVE
Rating |
Catalog |
Topology |
Buck, Synchronous Buck |
Iout (max) (A) |
3 |
Vin (max) (V) |
17 |
Vin (min) (V) |
3 |
Vout (max) (V) |
5.5 |
Vout (min) (V) |
0.8 |
Features |
Enable, Frequency synchronization, Low Noise, Output discharge, Overcurrent protection, Power good, Remote Sense, Spread Spectrum |
Operating temperature range (°C) |
-40 to 125 |
Type |
Module |
Duty cycle (max) (%) |
100 |
Control mode |
current mode |
Switching frequency (min) (kHz) |
1000 |
Switching frequency (max) (kHz) |
2200 |
B0QFN (RDU)-28-24.75 mm² 5.5 x 4.5
The TPSM8291x devices are a family of high-efficiency, low-noise and low-ripple current mode synchronous buck power modules. The devices are ideal for noise sensitive applications that would normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, de-serializer, and radar applications.
The devices operate at a fixed switching frequency of 2.2 MHz or 1 MHz and can be synchronized to an external clock.
To further reduce the output voltage ripple, the device integrates loop compensation to operate with an optional second-stage ferrite bead L-C filter. This feature allows an output voltage ripple below 10 µVRMS.
Low-frequency noise levels, similar to a low-noise LDO, are achieved by filtering the internal voltage reference with an integrated capacitor on the NR/SS pin. An external capacitor can be added to the module for additional filtering.
The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.
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