ISL95837HRZ-T

DATA SHORT To request the full datasheet, please visit www.intersil.com/products/isl95835 ISL95835, ISL95837 FN7671 Rev 1.00 March 2, 2012 3+1 And 1+1 Voltage Regulator for IMVP-7/VR12™ CPUs Features Compliant with IMVP-7/VR12™, the ISL95835 provides a complete solution for microprocessor and graphic processor core power supply. It provides two Voltage Regulators (VRs) with three integrated gate drivers. The first VR can be configured as 3-, 2- or 1-phase VR while the second output is 1-phase VR, providing maximum flexibility. The two VRs share the serial control bus to communicate with the CPU and achieve lower cost and smaller board area compared with the two-chip approach. • Serial Data Bus • Dual Outputs: - Configurable 3-, 2- or 1-phase for the 1st Output using 2 integrated Gate Drivers - 1-phase for the 2nd Output using an Integrated Gate Driver • 0.5% System Accuracy Over-Temperature • Supports Multiple Current Sensing Methods - Lossless Inductor DCR Current Sensing - Precision Resistor Current Sensing Based on Intersil’s Robust Ripple Regulator (R3) technology™, the PWM modulator compared to traditional modulators, has faster transient settling time, variable switching frequency during load transients and has improved light load efficiency with it’s ability to automatically change switching frequency. • Differential Remote Voltage Sensing The ISL95835 has several other key features. Both outputs support DCR current sensing with single NTC thermistor for DCR temperature compensation or accurate resistor current sensing. Both outputs come with remote voltage sense, programmable VBOOT voltage, programmable IMAX, TMAX, adjustable switching frequency, OC protection and separate Power-Good. • Programmable VBOOT Voltage at Start-up • Resistor Programmable IMAX, TMAX for Both Outputs • Adaptive Body Diode Conduction Time Reduction Applications • IMVP-7/VR12 Compliant Computers The ISL95837 can be considered as ISL95835 dedicated for 1+1 application. VR1 and VR2 are both 1-phase VR. Load Line Regulation 0.91 VIN = 19V 0.90 0.89 VOUT (V) 0.88 0.87 0.86 0.85 0.84 0.83 VIN = 12V 0.82 VIN = 8V 0.81 0.80 0 FN7671 Rev 1.00 March 2, 2012 6 12 18 24 30 36 IOUT (A) 42 48 54 60 66 Page 1 of 2 ISL95835, ISL95837 © Copyright Intersil Americas LLC 2011-2012. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN7671 Rev 1.00 March 2, 2012 Page 2 of 2