Integrated Bi-directional Trench Lateral Power MOSFETs for One Chip Lithium-ion Battery Protection ICs
2005
A low specific on-resistance bi-directional trench lateral power MOSFET (BTLPM) has been integrated with a controller in a 0.6mum BiCDMOS process for single-cell lithium-ion battery protector, downsizing the footprint of the protector in chip-scale package to 3mm 2 , one-third of its multi-chip counterparts. The first-silicon results of the BTLPM switches demonstrated a breakdown voltage of 22V, a specific on-resistance of 6.8mOmegamm 2 at a gate voltage of 4V (a gate electrical field of 2.3MV/cm)
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