DATASHEET ZL8800 FN7558 Rev.6.00 Dual Channel/Dual Phase PMBus ChargeMode Control DC/DC Digital Controller Nov 8, 2017 The ZL8800 is a dual output or dual phase digital DC/DC Features controller. Each output can operate independently or be used Unique compensation-free design, which is always stable together in a dual phase configuration for high current applications. Output voltage range: 0.54V to 5.5V The ZL8800 supports a wide range of output voltages Input voltage range: 4.5V to 5.5V or 6.5V to 14V (0.54V to 5.5V) operating from input voltages as low as 4.5V 1% output voltage accuracy over line, load, and temperature up to 14V. ChargeMode control achieves fast transient response and With the fully digital ChargeMode control, the ZL8800 will reduced output capacitance and provides output stability respond to a transient load step within a single switching cycle. without compensation This unique compensation-free modulation technique allows Switching frequency range: 200kHz to 1.33MHz designs to meet transient specifications with minimum output Proprietary single wire DDC serial bus enables voltage capacitance, thus saving cost and board space. sequencing and fault spreading with other Intersil ICs The proprietary single wire Digital-DC (DDC) serial bus External power supply tracking enables the ZL8800 to communicate between other Intersil ICs. By using the DDC, the ZL8800 achieves complex functions Cycle-by-cycle inductor peak current protection such as inter-IC phase current balancing, sequencing, and fault Digital fault protection for output voltage UV/OV, input spreading, eliminating complicated power supply managers voltage UV/OV, temperature, and MOSFET driver voltage with numerous external discrete components. 10-bit average output current measurement with adjustable The ZL8800 features cycle-by-cycle output overcurrent gain settings for sensing with high current, low DCR protection. The input voltage, output voltages, and inductors DrMOS/MOSFET driver supply voltages are overvoltage and 10-bit monitor ADC measures input voltage, input current, undervoltage protected. One internal temperature sensor and output voltage, internal and external temperature, and driver two external temperature sensors are available for voltage temperature monitoring, one of which is used for under-temperature and over-temperature protection. A Configurable to use standalone MOSFET drivers or snapshot parametric capture feature allows users to take a integrated Driver-MOSFET (DrMOS) devices snapshot of operating and fault data during normal or fault Nonvolatile memory for storing operating parameters and conditions. fault events Integrated Low Dropout (LDO) regulators allow the ZL8800 to PMBus compliant operate from a single input supply, eliminating the need for additional linear regulators. The LDO output can be used to Applications power external drivers or DrMOS devices. Servers and storage equipment With full PMBus compliance, the ZL8800 is capable of Telecom and datacom equipment measuring and reporting input voltage, input current, output Power supplies (memory, DSP, ASIC, FPGA) voltage, and output current as well as the devices internal temperature, two external temperatures, and an auxiliary Related Literature voltage input. For a full list of related documents, visit our website - ZL8800 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 FN7558 Rev.6.00 Page 1 of 88 Nov 8, 2017ZL8800 Table of Contents Simplified Applications 3 Block Diagram 4 Schematic 5 Pin Configuration 6 Pin Description 6 Ordering Information 8 Absolute Maximum Ratings . 9 Thermal Information . 9 Recommended Operating Conditions 9 Electrical Specifications . 9 ZL8800 Overview . 12 Digital-DC Architecture Overview . 12 Power Management Overview . 12 Multimode Pins . 12 Configurable Pins 13 SMBus Device Address Selection (SA) 13 Output Voltage and VOUT MAX Selection (VSET0,1) 13 Switching Frequency Setting (SYNC) 13 Input Voltage Undervoltage Lockout Setting (UVLO) 14 Internal Bias Regulators and Input Supply Connections . 14 Start-Up Procedure 15 TON DELAY and Rise Times . 15 Enable Pin Operation and Timing 15 Power-Good 15 Power Management Functional Description 16 Output Overvoltage Protection . 16 Output Prebias Protection 16 Output Overcurrent Protection . 16 Current Limit Configuration . 17 Input Current Monitor 17 Thermal Overload Protection 18 Voltage Tracking 18 Voltage Margining . 19 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 . 20 Nonvolatile Memory and Security Features 21 DC/DC Converter Design . 21 Power Train Component Selection . 21 Monitoring Through SMBus . 23 PMBus Command Summary 25 PMBus Data Formats 28 PMBus Command Detail . 29 Firmware Revision History . 86 86 Revision History About Intersil 87 Package Outline Drawing 88 FN7558 Rev.6.00 Page 2 of 88 Nov 8, 2017