The is a dual output or dual phase digital DC/DC controller. Each output can operate independently or be used together in a dual phase configuration for high current applications. The ZL8800 supports a wide range of output voltages to 5.5V) operating from input voltages as low to 14V. With the fully digital ChargeModeTM Control the ZL8800 will respond to a transient load step within a single switching cycle. This unique compensation-free modulation technique allows designs to meet transient specifications with minimum output capacitance thus saving cost and board space. Intersil's proprietary single wire DDC (Digital-DC) serial bus enables the ZL8800 to communicate between other Zilker ICs. By using the DDC, the ZL8800 achieves complex functions such as inter-IC phase current balancing, sequencing, and fault spreading, eliminating complicated power supply managers with numerous external discrete components. The ZL8800 features cycle by cycle output overcurrent protection. The input voltage, output voltages and DrMOS/MOSFET driver supply voltages are overvoltage and overvoltage protected. Two external and one internal temperature sensor are available for temperature monitoring, one of which is used for under and over-temperature protection. A snapshot parametric capture feature allows users to take a snapshot of operating and fault data during normal or fault conditions. Integrated Low Drop-Out (LDO) regulators allow the to be operated from a single input supply eliminating the need for additional linear regulators. The LDO output can be used to power external drivers or DrMOS devices. With full PMBusTM compliance the ZL8800 is capable of measuring and reporting input voltage, input current, output voltage, output current as well as the device's internal temperature, 2 external temperatures and an auxiliary voltage input.
FeaturesUnique compensation-free design � always stable Output voltage range: to 5.5V Input voltage range: 14V 1% Output Voltage accuracy over line, load and temperature ChargeMode Control achieves fast transient response, reduced output capacitance and provides output stability without compensation. Switching frequency range to 1.33MHz Proprietary single wire DDC (Digital-DC) serial bus enables voltage sequencing and fault spreading with other Zilker ICs Tracking of an external power supply Cycle by cycle inductor peak current protection Digital fault protection for output voltage UV/OV, input voltage UV/OV, temperature and MOSFET driver voltage 10-bit average output current measurement with adjustable gain settings for sensing with high current, low DCR inductors 10-bit monitor ADC measures Input Voltage, Input current, Output Voltage, Internal, External Temperature, driver voltage Configurable to use stand-alone MOSFET drivers or integrated Driver-MOSFET (DrMOS) devices Non-volatile memory for storing operating parameters and fault events. PMBusTM compliant
ApplicationsServers/storage equipment Telecom/datacom equipment Power supplies (memory, DSP, ASIC, FPGA)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-468-3774 | Copyright Intersil Americas LLC 2013. All Rights Reserved Intersil (and design) and ChargeMode are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.
Simplified Two Output Application. 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. Digital-DC Architecture Overview. Power Management Overview. Multi-Mode Pins. Configurable Pins. SMBus Device Address Selection (SA). Output Voltage and VOUT_MAX Selection (VSET0,1). Switching Frequency Setting (SYNC). Input Voltage Undervoltage Lock-Out Setting (UVLO). Internal Bias Regulators and Input Supply Connections. Start-up Procedure. Ton Delay and Rise Times. Enable. Power-Good. Power Management Functional Description. Output Overvoltage Protection. Output Pre-Bias Protection. Output Overcurrent Protection. Current Limit Configuration. Input Current Monitor. Thermal Overload Protection. Voltage Tracking. Voltage Margining. External Voltage Monitoring. SMBus Communications. Digital-DC Bus. Phase Spreading. Output Sequencing. Fault Spreading. Active Current Sharing. Temperature Monitoring Using XTEMP Pin. NonVolatile Memory and Security Features. DC/DC Converter Design. Power Train Component Selection. Monitoring via SMBus.
PMBusTM Command Summary. 25 PMBusTM Data Formats. 28 PMBusTM Command Detail. 29 Revision History. 81 About Intersil. 81 Package Outline Drawing. 82
