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ZL8800-2CH-DEMO1Z

Description
Dual Channel/Dual Phase PMBus™ ChargeMode™ Control DC/DC Digital Controller
File Size3MB,88 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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ZL8800-2CH-DEMO1Z Overview

Dual Channel/Dual Phase PMBus™ ChargeMode™ Control DC/DC Digital Controller

DATASHEET
ZL8800
Dual Channel/Dual Phase PMBus ChargeMode Control DC/DC Digital Controller
The
ZL8800
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
(0.54V to 5.5V) operating from input voltages as low as 4.5V
up to 14V.
With the fully digital ChargeMode™ 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.
The proprietary single wire Digital-DC™ (DDC) serial bus
enables the ZL8800 to communicate between other Intersil
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
undervoltage protected. One internal temperature sensor and
two external temperature sensors are available for
temperature monitoring, one of which is used for
under-temperature 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 Dropout (LDO) regulators allow the ZL8800 to
operate 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 PMBus™ compliance, the ZL8800 is capable of
measuring and reporting input voltage, input current, output
voltage, and output current as well as the device’s internal
temperature, two external temperatures, and an auxiliary
voltage input.
FN7558
Rev.6.00
Nov 8, 2017
Features
• Unique compensation-free design, which is always stable
• Output voltage range: 0.54V to 5.5V
• Input voltage range: 4.5V to 5.5V or 6.5V to 14V
• 1% output voltage accuracy over line, load, and temperature
• ChargeMode control achieves fast transient response and
reduced output capacitance and provides output stability
without compensation
• Switching frequency range: 200kHz to 1.33MHz
• Proprietary single wire DDC serial bus enables voltage
sequencing and fault spreading with other Intersil ICs
• External power supply tracking
• 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 and external temperature, and driver
voltage
• Configurable to use standalone MOSFET drivers or
integrated Driver-MOSFET (DrMOS) devices
• Nonvolatile memory for storing operating parameters and
fault events
• PMBus compliant
Applications
• Servers and storage equipment
• Telecom and datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
Related Literature
• For a full list of related documents, visit our website
-
ZL8800
product page
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER
ZL8800
ZL8801
ZL8802
DUAL OUTPUT
Yes
No
Yes
DUAL PHASE
Yes
Yes
Yes
DDC CURRENT SHARE
No
Yes
Yes
SPS SUPPORT
No
No
Yes
FN7558 Rev.6.00
Nov 8, 2017
Page 1 of 88

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