|
|
PDF ZL8802 Data sheet ( Hoja de datos )
| Número de pieza | ZL8802 | |
| Descripción | DC/DC Digital Controller | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ZL8802 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
DATASHEET
Dual Channel/Dual Phase PMBus™ ChargeMode™
Control DC/DC Digital Controller
ZL8802
The ZL8802 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 supporting 2-, 4-, 6- and 8-phase operation with
up to four ZL8802s.
The ZL8802 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 ZL8802 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 ZL8802 to communicate between other Intersil
digital power ICs. By using the DDC, the ZL8802 achieves
complex functions such as inter-IC phase current balancing,
sequencing and fault spreading. This eliminates complicated
power supply managers with numerous external discrete
components.
The ZL8802 features fast output overcurrent protection. The
input voltage, output voltages and DrMOS/MOSFET driver
supply voltages are overvoltage and undervoltage protected.
Two external and one internal temperature sensors are
available for temperature monitoring, one of which can be
configured 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 Dropout (LDO) regulators allow the ZL8802 to
operate from a single input supply eliminating the need for
additional linear regulators. The VDRV LDO output can be used
to power external drivers or DrMOS devices.
With full PMBus™ compliance the ZL8802 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
or temperature input.
Features
• Unique compensation-free design – always stable
• Output voltage range: 0.54V to 5.5V
• Input voltage range: 4.5V to 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.
• 2-channel output, 2-, 4-, 6- or 8-phase output with 2, 3 or 4
devices
• Switching frequency range 200kHz to 1.33MHz
• Proprietary single-wire DDC (Digital-DC) serial bus enables
voltage sequencing and fault spreading with other Intersil
digital power ICs
• Inductor peak and averaged over and undercurrent
protection
• Digital fault protection for output voltage UV/OV, input
voltage UV/OV, temperature and MOSFET driver voltage
• Accurate average output current measurement with
adjustable gain settings for sensing with SPS current
monitor outputs or high current, low DCR inductors
• Monitor ADC measures input voltage, input current, output
voltage, driver voltage, internal and external temperature
• Nonvolatile memory for storing operating parameters and
fault events
• PMBus™ compliant
Applications
• Servers/storage equipment
• Telecom/datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
PART NUMBER
ZL8800
ZL8801
ZL8802
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
DUAL OUTPUT
DUAL PHASE
DDC CURRENT SHARE
Yes Yes
No
No Yes
Yes
Yes Yes
Yes
SPS SUPPORT
No
No
Yes
August 6, 2015
FN8760.0
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved
Intersil (and design), ChargeMode, Digital-DC and PowerNavigator are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
Pin Configuration
ZL8802
ZL8802
(44 LD QFN)
TOP VIEW
(PAD)
Pin Description
PIN TYPE
# PIN NAME (Note 1)
DESCRIPTION
1 SCL
I/O Serial clock. Connect to external host and/or to other ZL devices. Requires a pull-up resistor to a 2.5V to 5.5V (recommend
VR5, do not use V25) source. Pull-up supply must be from an “always on” source or VR5.
2 SDA
I/O Serial data. Connect to external host and/or to other ZL devices. Requires a pull-up resistor to a 2.5V to 5.5V (recommend
VR5, do not use V25) source. Pull-up supply must be from an “always on” source or VR5.
3 SALRT
O Serial alert. Connect to external host if desired. Requires a pull-up resistor to a 2.5V to 5.5V (recommend VR5, do not use
V25) source. Leave floating if not used.
4 SGND PWR Connect to low impedance ground plane. Internal connection to SGND. All pin-strap resistors should be connected to SGND.
SGND must be connected to DGND and PGND using a single point connection.
5 SA
M
Serial address select pin. Used to assign unique address for each individual device. See Table 3 for PMBus address options.
Connect resistor to SGND.
6
VMON/
TMON
Smart power stage temperature monitoring or general purpose voltage monitoring pin. Requires an external 2:1 resistor
I divider network to correctly read temperature. Requires an external 16:1 resistor divider network to read voltage. Connect
bottom of resistor divider network to SGND. Connect VMON/TMON pin to SGND if not used.
7 DGND PWR Digital ground. Must connect to SGND and PGND using a single point connection.
8 ASCRCFG
M
Selects ChargeMode control (ASCR) configuration settings. See “Configurable Pins” on page 12 and Table 8 on page 14 for
details.
9 CFG
M Selects current sense, current limit and operating mode. See “Configurable Pins” on page 12 and Table 8 on page 14 for
details.
10 VSET0
M Channel 0 output voltage selection pin. Used to set VOUT0 and VOUT0 max. See Table 4 on page 12 for VOUT pin-strap
options. Default VOUT max is 115% of VOUT setting, but this can be overridden via the PMBus interface with the VOUT_MAX
command. Connect resistor to SGND.
11 VSET1
M Channel 1 output voltage selection pin. Used to set VOUT1 and VOUT1 max. See Table 4 on page 12 for VOUT pin-strap
options. Default VOUT max is 115% of VOUT setting, but this can be overridden via the PMBus interface with the VOUT_MAX
command. Connect resistor to SGND. NOT USED IN 2-PHASE MODE. Leave floating in 2-phase mode.
12 PG0
O Channel 0 power-good output. Can be configured as open drain or push-pull using the PMBus interface. Default setting is
open drain.
Submit Document Feedback
5
FN8760.0
August 6, 2015
5 Page 
ZL8802
ZL8802 Overview
Digital-DC Architecture Overview
The ZL8802 is an innovative mixed-signal power conversion and
power management IC based on Intersil patented Digital-DC
technology that provides an integrated, high performance
step-down converter for a wide variety of power supply
applications.
The ZL8802 DC/DC controller is a dual channel, dual phase
controller based on an architecture that does not require loop
compensation.
The ZL8802s full digital loop achieves precise control of the
entire power conversion process with no software required
resulting in a very flexible device that is also very easy to use. The
ChargeMode control algorithm is implemented to respond to
output current changes within a single PWM switching cycle. This
achieves a smaller total output voltage variation with less output
capacitance than traditional PWM controllers. An extensive set of
power management functions are fully integrated and can be
configured using simple pin connections. The user configuration
can be saved in an internal Nonvolatile Memory (NVRAM).
Additionally, all functions can be configured and monitored via
the SMBus hardware interface using standard PMBus™
commands, allowing ultimate flexibility. The ZL8802 is compliant
with the PMBus™ Power System Management Protocol
Specification Part I and II version 1.2.
Once enabled, the ZL8802 is immediately ready to regulate
power and perform power management tasks with no
programming required. Advanced configuration options and
real-time configuration changes are available via PMBus™
commands if desired and continuous monitoring of multiple
operating parameters is possible with minimal interaction from a
host controller. Integrated subregulation circuitry enables single
supply operation from any supply between 4.5V and 14V with no
bias supplies needed.
The ZL8802 can be configured by simply connecting its pins
according to the tables provided in the following sections.
Additionally, a comprehensive set of online tools and application
notes are available to help simplify the design process. An
evaluation board is also available to help the user become
familiar with the device. This board can be evaluated as a
standalone platform using pin configuration settings.
PowerNavigator™, a Windows based GUI is also provided to
enable full configuration and monitoring capability via the
PMBus interface and the included USB cable.
Power Management Overview
The ZL8802 incorporates a wide range of configurable power
management features that are simple to implement with no
external components. Additionally, the ZL8802 includes circuit
protection features that continuously safeguard the device and
load from damage due to unexpected system faults. The ZL8802
can continuously monitor input voltage and current, output
voltage and current, internal temperature and the temperature of
2 external thermal diodes. A power-good output signal is also
included to enable power-on reset functionality for an external
processor.
All power management functions can be configured using either
pin configuration techniques described in this document or via
the SMBus interface using PMBus™ commands. Monitoring
parameters can also be preconfigured to provide alerts for
specific conditions. The “PMBus™ Command Summary” on
page 22 contains a listing of all the PMBus™ commands
supported by the ZL8802 and a detailed description of the use of
each of these commands.
Pin-strap Pins
In order to simplify circuit design, the ZL8802 incorporates
patented pin-strap pins that allow the user to easily configure
many aspects of the device with no programming. Most power
management features can be configured using these pins. The
pin-strap pins will read the value of the resistor connected to
those pins when power is applied to the device and set certain
device configuration settings as specified by those resistor
values.
V25
LOGIC
HIGH
MULTIMODE
PIN
OPEN
LOGIC
LOW
MULTIMODE
PIN
PIN-STRAP
SETTINGS
RESISTOR
SETTINGS
FIGURE 3. PIN-STRAP AND RESISTOR SETTINGS
PIN TIED TO
LOW (Logic LOW)
OPEN (N/C)
HIGH (Logic HIGH)
Resistor to SGND
TABLE 2.
VALUE
<0.8 VDC
No connection
>2.0 VDC
Set by resistor value
Device configuration settings are made when connecting a finite
value resistor (in a specified range) between the pin-strap pin and
SGND. Standard 1% resistor values are used, and only every
fourth E96 resistor value is used so the device can reliably
recognize the value of resistance connected to the pin while
eliminating the error associated with the resistor accuracy. Up to
31 unique selections are available using a single resistor.
SMBus: Almost any ZL8802 function can be configured via the
SMBus interface using standard PMBus™ commands.
Additionally, any value that has been configured using the
pin-strap setting method can also be reconfigured and/or verified
via the SMBus. “PMBus™ Command Detail” on page 27 explains
the use of the PMBus™ commands in detail.
Submit Document Feedback 11
FN8760.0
August 6, 2015
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ZL8802.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ZL8800 | DC/DC Digital Controller | Intersil |
| ZL8801 | DC/DC Digital Controller | Intersil |
| ZL8802 | DC/DC Digital Controller | Intersil |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |