The ADP3210 is an efficient, multiphase, synchronous, step-down switch regulator that converts laptop battery voltage to the core power supply voltage of high-performance Intel processors. This part uses an internal 7-bit DAC to read the voltage recognition (VID) code directly from the processor that sets the output voltage. The phase relationship of the output signal can be configured as 1 -, 2 -, or 3 - phase operation with a staggered switch.
Function block diagram
Test circuit
The ADP3210 uses the multi-mode architecture to drive the logical level PWM output, and the switching frequency is selected by the user according to the output current requirements. The part switches between multiphase and single-phase operations based on the system signals provided by the CPU. Under different load conditions, the shedding phase as a function of load maximizes the power conversion efficiency. In addition, the ADP3210 supports programmable load line resistance adjustment. Therefore, the output voltage is always in the optimal position for the load transient.
The chip also provides accurate and reliable short-circuit protection, with adjustable current limit thresholds and a good output of delayed power, shielded in the event of On-The-Fly (OTF) output voltage changes to eliminate false alarms. The performance of the ADP3210 is suitable for the extended commercial temperature range from −10°C to 100°C. The chip comes in a 40-lead QFN package.
Running status of single-phase RPM mode
Dual-phase PWM mode operation
