RTQ8825 Datasheet | Richtek

Dual Rail 3+2-Phase PWM Controller with PMBus General Description The RTQ8825 is a dual output voltage rail 3+2-phase controller: a 3/2/1/0 phase synchronous buck controller, the rail A and a 2/1/0 phase synchronous buck controller, the rail B. The RTQ8825 adopts G-NAVPTM (Green Native AVP) which is Richtek’s proprietary topology derived from finite DC gain of EA amplifier with current mode control, making it easy to set the droop to support all CPU/Microprocessor requirements of AVP (Adaptive Voltage Positioning). Based on the GNAVPTM topology, the RTQ8825 Features a new generation of quick response mechanism (Adaptive Quick Response, AQR) to optimize AVP performance during load transient and reduce output capacitors. The RTQ8825 supports VID on-the-fly function with four different slew rates via PMBus mand setting. The DAC converts the VOUT_MAND code ranging from 0.25V to 1.516V with 1.953m V per step. The RTQ8825 integrates a high accuracy ADC for platform and function settings, such as SPS type, PMBus address, boot voltage and load-line. The RTQ8825 provides reset Vout function, Vout to be set to the VBOOT value while RESET# pin is asserted low. The RTQ8825 provides VR_Ready and thermal indicators. It also Features plete fault protection functions including over-voltage (OV), under-voltage (UV), slow over-current (SLOW_OC), fast over-current (Fast_OC), over-temperature (OT) and under-voltage lockout (UVLO). The RTQ8825 more supports several functions which can be set by I2C/PMBus interface. Applications - Networking system - Tele, Data and Server system - Point-of-load power supply (DSP, ASIC, FPGA) Features - 3/2/1/0 Phase (rail A) + 2/1/0 Phase (rail B) PWM Controller - G-NAVPTM (Green Native Adaptive Voltage Positioning) Topology - Each Output Voltage Ranges 0.25V to 1.516V - Embedded LDO for Dr.MOS 3.3V PWM Level - Pin Programmable 27 VBOOT Voltages - Current Sensing by Either Current Type or Voltage Type SPS - Digital Current...