General Description The RT8885A is a dual output 3-phase + 2-phase PWM controller with 3 integrated MOSFET gate drivers and a single SVID interface for CPU and GPU core power supply. This part complies with Intel VR12/IMVP7 Pulse Width Modulation Specification.
Features ● Dual Output : 3-Phase (CORE) + 2-Phase (GFX) ● Integrated MOSFET Drivers : 2 (CORE) + 1 (GFX) ● VR12/IMVP7 PWM Specification Compliant ● Serial VID Interface ● G-NAVPTM Topology ● Fast Line/Load Transient Response ● Quick Response for Load Transient ● 0.5% DAC Accuracy ● 0.8% System Accuracy ● Accurate Current Balance ● Selectable Droop Function ● Selectable Forced DEM Operation ● Built-in ADC for Platform Programming ● Power Good Indicator ● Current Monitor Output ● Thermal Monitor ● Thermal Throttling Indicator VRHOT ● Phase Shedding in PS1 ● Phase Shedding and Diode Emulation in PS2 ● Differential Remote Output Voltage Sense ● Lossless Inductor DCR Current Sense ● Switching Frequency up to 1MHz per Phase ● OVP, UVP, NVP, OCP, OTP, UVLO ● 56-Lead WQFN Package ● RoHS Compliant and Halogen Free
The RT8167B is a dual single-phase PWM controller with integrated MOSFET drivers, compliant with Intel IMVP7 Pulse Width Modulation Specification to support both CPU core and GPU core power. This part adopts G-NAVPTM (Green-Native AVP), which is a RICHTEK proprietary topology derived from finite DC gain compensator in constant on time control mode. G-NAVPTM makes this part an easy setting PWM controller to meet all Intel AVP (Active Voltage Positioning) mobile CPU/GPU requirements. The RT8167B uses SVID interface to control an 8-bit DAC for output voltage programming. The built-in high accuracy DAC converts the received VID code into a voltage value ranging from 0V to 1.52V with 5mV step voltage.
Dual Single-Phase PWM Controller for CPU Core and GPU Core Power
IMVP7 Compatible Power Management States
Serial VID Interface
AVP for CPU VR Only
0.5% DAC Accuracy
0.8% System Accuracy
Differential Remote Voltage Sensing
Built-in ADC for Platform Programming
SETINI/SETINIA for CPU/GPU Core VR Initial Startup Voltage
TMPMAX to Set Platform Maximum Temperature
ICCMAX/ICCMAXA for CPU/GPU Core VR Maximum Current
Power Good Indicator : VR_READY/VRA_READY for CPU/GPU Core Power
The RT8859M is a VR12/IMVP7 compliant CPU power controller which includes two voltage rails : a 4/3/2/1 phase synchronous buck controller, the CORE VR, and a single phase buck controller, the AXG VR. The RT8859M adopts G-NAVP™ (Green Native AVP), which is RICHTEK's proprietary topology derived from finite DC gain compensator with current mode control, making it an easy setting PWM controller, meeting all Intel CPU requirements of AVP (Active Voltage Positioning).
Purpose ● The HTOL test is to demonstrate the quality or reliability of device subjects to the specified conditions over an extended time period. ● The ESD tests are used to classify the electrostatic discharge of microcircuits. ● The latch-up test is used to check IC latch-up characteristics. ● The environment tests are to ensure the process of assembly of this package type that meets RICHTEK quality specifications.
General Description The RT8856 is a single/dual phase PWM controller with two integrated MOSFET drivers. Moreover, it is compliant with Intel IMVP6.5 Voltage Regulator Specification to fulfill its mobile CPU Vcore power supply requirements. The RT8856 adopts NAVPTM(Native AVP) which is RICHTEKs proprietary topology derived from finite DC gain compensator peak current mode, making it an easy setting PWM controller that meets all Intel AVP (Active Voltage Positioning) mobile CPU requirements.
Features ● 1/2 Phase PWM Controller with 2 Integrated MOSFET Drivers ● IMVP6.5 Compatible Power Management States (DPSRLVR, PSI, Extended Deeper Sleep Mode) ● NAVP (Native AVP) Topology ● 7-bit DAC ● 0.8% DAC Accuracy ● Fixed VBOOT (1.1V) ● Differential Remote Voltage Sensing ● Programmable Output Transition Slew Rate Control ● Accurate Current and Thermal Balance ● System Thermal Compensation AVP ● Ringing Free Mode at Light Load Conditions ● Fast Transient Response ● Power Good ● Clock Enable Output ● Thermal Throttling ● Current Monitor Output ● Switching Frequency up to 1MHz Per Phase ● OVP, UVP, NVP, OCP, OTP, UVLO ● 40-Lead WQFN Package ● RoHS Compliant and Halogen Free
The RT8167A is a dual single-phase synchronous Buck PWM controller with integrated gate drivers, compliant with Intel VR12/IMVP7 specification. A serial VID (SVID) interface is built-in in the RT8167A to communicate with Intel VR12/IMVP7 compliant CPU. The integrated differential remote output voltage sensing function and built-in high accuracy DAC achieve accurate output voltage regulation.
• G-NAVPTM (Green Native Active Voltage Positioning) Topology
• Dual Output Controller with Two Built-in Gate Drivers
• Serial VID Interface
• 0.5% DAC Accuracy
• Differential Remote Output Voltage Sensing
• Built-in ADC for Platform Programming
• Diode Emulation Mode (DEM) at Light Load Condition
• Droop Enable/Disable
• Fast Transient Response
• VR12/IMVP7 Compatible Power Management States
• VR Ready Indicator
• Thermal Throttling Indicator
• Current Monitor Output
• Switching Frequency up to 1MHz per Phase
• Protection : OVP, UVP, NVP, OCP, UVLO
• Small 48-Lead WQFN Package
• RoHS Compliant and Halogen Free
• VR12 / IMVP7 Intel CPU Core Supply
• AVP Step-down Converter
• Notebook/ Netbook/ Desktop Computer CPU Core Supply
RT9245A is a multi-phase buck DC/DC controller integrated with all control functions for AMD K8 CPU or Intel® GHz CPU which is VRD10.x-compliant. The RT9245A could be operated with 2, 3 or 4 buck switching stages operating in interleaved phase set automatically. The multiphase architecture provides high output current while maintaining low power dissipation on power devices and low stress on input and output capacitors. The high equivalent operating frequency also reduces the component dimension and the output voltage ripple in load transient.
Multi-Phase Power Conversion with Automatic Phase Selection
6-bits VRD10.x or 5-bit K8 DAC Output with Active Droop Compensation for Fast Load Transient
Smooth VCORETransition at VID Jump
Power Stage Thermal Balance by DCR Current Sense
Hiccup Mode Over-Current Protection
Programmable Switching Frequency (50kHz to 400kHz per Phase), Under-Voltage Lockout and SoftStart
High Ripple Frequency Times Channel Number
RoHS Compliant and 100% Lead (Pb)-Free
Intel® Processors Voltage Regulator : VRD10.x and AMD K8