DATASHEET ZL8802 FN8760 Rev.3.00 Dual Channel/Dual Phase PMBus ChargeMode Control DC/DC Digital Controller Nov 8, 2017 The ZL8802 is a dual output or dual phase digital DC/DC Features controller. Each output can operate independently or be used Unique compensation-free design always stable together in a dual phase configuration for high current applications supporting 2-, 4-, 6-, and 8-phase operation with Output voltage range: 0.54V to 5.5V up to four ZL8802 controllers. Input voltage range: 4.5V to 14V The ZL8802 supports a wide range of output voltages 1% output voltage accuracy over line, load, and temperature (0.54V to 5.5V) operating from input voltages as low as 4.5V ChargeMode control achieves fast transient response, up to 14V. reduced output capacitance, and provides output stability With the fully digital ChargeMode control, the ZL8802 will without compensation. respond to a transient load step within a single switching cycle. 2-channel output, 2-, 4-, 6-, or 8-phase output with two, This unique compensation-free modulation technique allows three, or four devices designs to meet transient specifications with minimum output Switching frequency range 200kHz to 1.33MHz capacitance, thus saving cost and board space. Proprietary single-wire DDC (Digital-DC) serial bus enables The proprietary single-wire Digital-DC (DDC) serial bus voltage sequencing and fault spreading with other Intersil enables the ZL8802 to communicate between other Intersil digital power ICs digital power ICs. By using the DDC, the ZL8802 achieves complex functions such as inter-IC phase current balancing, Inductor peak and averaged over and undercurrent sequencing, and fault spreading. This eliminates complicated protection power supply managers with numerous external discrete Digital fault protection for output voltage UV/OV, input components. voltage UV/OV, temperature, and MOSFET driver voltage The ZL8802 features fast output overcurrent protection. The Accurate average output current measurement with input voltage, output voltages, and DrMOS/MOSFET driver adjustable gain settings for sensing with SPS current supply voltages are overvoltage and undervoltage protected. monitor outputs or high current, low DCR inductors Two external temperature sensors and one internal Monitor ADC measures input voltage, input current, output temperature sensor are available for temperature monitoring, voltage, driver voltage, internal and external temperature one of which can be configured for under- and over- temperature protection. A snapshot parametric capture Nonvolatile memory for storing operating parameters and feature allows users to take a snapshot of operating and fault fault events data during normal or fault conditions. PMBus compliant Integrated Low Dropout (LDO) regulators allow the ZL8802 to Applications operate from a single input supply eliminating the need for additional linear regulators. The VDRV LDO output can be used Servers and storage equipment to power external drivers or DrMOS devices. Telecom and datacom equipment With full PMBus compliance, the ZL8802 is capable of Power supplies (memory, DSP, ASIC, FPGA) measuring and reporting input voltage, input current, output voltage, output current, as well as the devices internal Related Literature temperature, two external temperatures, and an auxiliary For a full list of related documents, visit our website voltage or temperature input. - ZL8802 product page TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS PART NUMBER DUAL OUTPUT DUAL PHASE DDC CURRENT SHARE SPS SUPPORT ZL8800 Yes Yes No No ZL8801 No Yes Yes No ZL8802 Yes Yes Yes Yes FN8760 Rev.3.00 Page 1 of 91 Nov 8, 2017ZL8802 Table of Contents Two-Phase Application . 3 Block Diagram 4 Pin Configuration 5 Pin Description 5 Ordering Information 7 Absolute Maximum Ratings . 8 Thermal Information . 8 Recommended Operating Conditions 8 Electrical Specifications . 8 ZL8802 Overview . 11 Digital-DC Architecture Overview . 11 Power Management Overview . 11 Pin-Strap Pins . 11 Configurable Pins 12 SMBus Device Address Selection (SA) 12 Output Voltage and VOUT MAX Selection (VSET0, 1) 12 Switching Frequency Setting (SYNC) 12 Input Voltage Undervoltage Lockout Setting (UVLO) 13 Configuration Setting (CFG) . 13 ChargeMode Control (ASCR) Setting (ASCRCFG) 14 Start-Up and Shutdown Settings . 14 Internal Bias Regulators and Input Supply Connections . 14 Start-Up Procedure 15 Ton-Delay and Rise Times 15 Enable Pin Operation and Timing 16 Power-Good 16 Power Management Functional Description 16 Output Overvoltage Protection . 16 Output Prebias Protection 16 Output Overcurrent Protection . 17 Current Limit Configuration . 18 Input Current Monitor 18 Thermal Overload Protection 18 Voltage Tracking 18 External Voltage Monitoring . 19 SMBus Communications 19 Digital-DC Bus 19 Phase Spreading 20 Output Sequencing 20 Fault Spreading . 20 Active Current Sharing . 20 Temperature Monitoring Using XTEMP Pin . 21 Nonvolatile Memory and Security Features 21 Monitoring Through SMBus . 21 PMBus Command Summary 22 PMBus Use Guidelines . 25 PMBus Data Formats 26 PMBus Command Detail 27 MFR SMBALERT MASK (DBh) . 70 Revision History 90 About Intersil 90 Package Outline Drawing 91 FN8760 Rev.3.00 Page 2 of 91 Nov 8, 2017