REGULATOR BALANCE CONTROLLER
May 27, 1999
EZ1900
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.
semtech.
com
DESCRIPTION
The EZ1900 is a high performance positive load current balancer designed for use in applications utilizing 2
regulators in parallel to achieve equal current sharing or identical current for each load.
The
regulator balance controller allows a flexible motherboard design to be made to cope with different processor configurations.
The controller reads a logic level upgrade signal (denoted VCC2DET on the Intel P55C; similar on AMD, Cyrix and PowerPC microprocessors) to control the output voltage of two linear low dropout voltage
regulators to the CPU core and I/O planes.
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