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ADP3188的产品特征:
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
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
ADP3188的技术参数:
Parameter Rating
VCC −0.3 V to +15 V
FBRTN −0.3 V to +0.3 V
VID0 to VID5, EN, DELAY, ILIMIT, CSCOMP,
RT, PWM1 to PWM4, COMP −0.3 V to +5.5 V
SW1 – SW4 −5 V to +25 V
All Other Inputs and Outputs −0.3 V to VCC + 0.3 V
Storage Temperature −65°C to +150°C
Operating Ambient Temperature Range 0°C to 85°C
Operating Junction Temperature 125°C
Thermal Impedance (θJA) 100°C/W
Lead Temperature
Soldering (10 sec) 300°C
Infrared (15 sec) 260°C
ADP3188的产品描述:
The ADP3188 is a highly efficient, multiphase, synchronous buck switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance Intel processors. The part uses an internal 6-bit DAC to read a voltage identification (VID) code directly from
the processor, which is used to set the output voltage between 0.8375 V and 1.6 V. It uses a multimode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. The phase relationship of the output signals can be programmed to provide 2-, 3-, or 4-phase operation, allowing the construction of up to four complementary buck switching stages.
The ADP3188 also includes programmable no-load offset and slope functions to adjust the output voltage as a function of the load current, so it is always optimally positioned for a system transient. The ADP3188 also provides accurate and reliable short-circuit protection, adjustable current limiting, and a
delayed power good output that accommodates on-the-fly output voltage changes requested by the CPU. The ADP3188 is specified over the commercial temperature range of 0°C to 85°C and is available in 28-lead, TSSOP and QSOP packages.