ADP3188
FEATURES
Selectable 2-, 3- or 4-phase operation at up to 1 MHz per phase ±9.5 m V worst-case differential sensing error over temperature Logic-level PWM outputs for interface to external high power drivers Active current balancing between all output phases Built-in power good/crowbar blanking supports on-the-fly VID code changes 6-bit digitally programmable 0.8375 V to 1.6 V output Programmable short-circuit protection with programmable latch-off delay
FUNCTIONAL BLOCK DIAGRAM
VCC 28 RAMPADJ 14 RT 13
EN 11 UVLO SHUTDOWN AND BIAS OSCILLATOR SET RESET EN 27 PWM1
GND 19
CMP DAC+150m V CSREF CURRENT BALANCING CIRCUIT CMP
RESET 2-/3-/4-PHASE DRIVER LOGIC RESET
26 PWM2
25 PWM3
DAC-250m V CMP PWRGD 10 DELAY RESET 24 PWM4 CURRENT LIMIT 23 SW1 ILIMIT 15 EN 22 SW2 21 SW3 20 SW4 CURRENT LIMIT CIRCUIT SOFT START 17 CSSUM 16 CSREF 18 CSP
CROWBAR
APPLICATIONS
Desktop PC power supplies for Next-generation Intel® processors VRM modules
DELAY 12
GENERAL DESCRIPTION
The ADP3188 is...
