In this communication, we propose a compensation procedure for LDO regulators which exploits both a current/buffer amplifier Miller compensation and a standard Miller compensation. The analysis shows how to design the compensation network in order to guarantee the stability for all the loading conditions. The results are then used to design a LDO regulator which is stable for a load current range of 4 orders of magnitude (from 10 μA to 100 mA) without requiring an external off-chip capacitor with ESR. Simulations in good agreement with the theoretical results are also shown. © 2007 IEEE.
LDO Compensation Strategy based on Current Buffer/Amplifiers
GIUSTOLISI, Gianluca;PALUMBO, Gaetano;
2007-01-01
Abstract
In this communication, we propose a compensation procedure for LDO regulators which exploits both a current/buffer amplifier Miller compensation and a standard Miller compensation. The analysis shows how to design the compensation network in order to guarantee the stability for all the loading conditions. The results are then used to design a LDO regulator which is stable for a load current range of 4 orders of magnitude (from 10 μA to 100 mA) without requiring an external off-chip capacitor with ESR. Simulations in good agreement with the theoretical results are also shown. © 2007 IEEE.File in questo prodotto:
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