www.DataSheet4U.com
6-Bit, Programmable 2-/3-/4-Phase, Synchronous Buck Controller ADP3190
FEATURES
Selectable 2-, 3-, ...
www.DataSheet4U.com
6-Bit, Programmable 2-/3-/4-Phase, Synchronous Buck Controller ADP3190
FEATURES
Selectable 2-, 3-, or 4-phase operation at up to 1 MHz per phase ±9.5 mV worst-case differential sensing error over temperature Logic-level PWM outputs for interface to external high power drivers PWM Flex-ModeTM architecture for excellent load transient performance 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
SHUNT REGULATOR (ADP3190 ONLY) OSCILLATOR EN 11 GND 19 DAC +150mV CSREF CURRENT BALANCING CIRCUIT UVLO SHUTDOWN AND BIAS SET CMP RESET EN
27
PWM1
CMP
RESET 2-/3-/4-PHASE DRIVER LOGIC
26
PWM2
CMP
RESET
25
PWM3
DAC –250mV CMP PWRGD 10 DELAY RESET CURRENT LIMIT
24
PWM4
CROWBAR
APPLICATIONS
23
SW1 SW2 SW3 SW4 CSSUM CSREF
Desktop PC power supplies for Next-generation Intel® processors VRM modules Games consoles
22
ILIMIT
15
21 20
EN CURRENT LIMIT CIRCUIT
GENERAL DESCRIPTION
The ADP3190/ADP3190A1 are highly efficient, multiphase, synchronous buck switching regulator controllers optimized for converting a 5 V or 12 V main supply into the core supply
voltage required by high performance Intel processors. They use an internal 6-bit DAC to read a
voltage identification (VID) code directly from the processo...