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부품번호 | ZL8800 기능 |
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기능 | DC/DC Digital Controller | ||
제조업체 | Intersil | ||
로고 | |||
전체 30 페이지수
DATASHEET
Dual Channel/Dual Phase PMBus™ ChargeMode™
Control DC/DC Digital Controller
ZL8800
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.
Intersil’s proprietary single wire DDC (Digital-DC™) 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
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 Dropout (LDO) regulators allow the ZL8800 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 PMBus™ 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.
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.
• Switching frequency range 200kHz to 1.33MHz
• Proprietary single wire DDC (Digital-DC) serial bus enables
voltage sequencing and fault spreading with other Intersil
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
• Nonvolatile memory for storing operating parameters and
fault events.
• PMBus™ compliant
Applications
• Servers/storage equipment
• Telecom/datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
Related Literature
• AN1877, “ZL8800-2CH-DEMO1Z Demonstration Board User
Guide”
• AN1900, “USB to PMBus™ Adapter User Guide”
• AN1901, “ZL8800-2PH-DEMO1Z Demonstration Board”
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
September 14, 2015
FN7558.3
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 2013, 2015. All Rights Reserved
Intersil (and design), Digital-DC and ChargeMode are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Block Diagram
VSEN0P/N
VSEN1P/N
ZL8800
ADC
ASCR
DIGITAL PWM
MODULATOR
PWM+
DEAD
TIME
ADC
ASCR
DIGITAL PWM
MODULATOR
PWM+
DEAD
TIME
PWMH0
PWML0
PWMH1
PWML1
XTEMP1P/N
XTEMP0P/N
VTRKP/N
VMON
VDD
SYNC
DDC
SDA
SCL
SALRT
MONITOR
ADC
OSC
CLK
GEN
PLL
DIGITAL-DC
INTER-DEVICE
COMMUNICATIONS
MICROCONTROLLER
AND
NONVOLATILE
MEMORY
DIGITAL LOGIC
+
OV/UV/OC/UC
COMPARATORS
IPEAK/
IAVG
ADC
IPEAK/
IAVG
ADC
MGN0/1
EN0/1
PG0/1
ISENA0
ISENB0
ISENA1
ISENB1
I2C AND SMBus
SERIAL
INTERFACE
PIN-STRAP
RESISTOR
DETECTION
VDD
IIN
ADC
LDOs
GAIN
FIGURE 2. BLOCK DIAGRAM
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Pin Description (Continued)
TYPE
PIN LABEL (Note 1)
DESCRIPTION
20 VSEN0N
I Differential output channel 0 voltage sense feedback. Connect to negative output regulation point.
21 VDRVEN
I VDRV (MOSFET driver bias supply) Enable. Leave unconnected (float) or pull-up to VR5 to enable, tie to ground to disable.
22 ISENA0
I Positive differential voltage input for channel 0 DCR current sensing.
23 ISENB0
I Negative differential voltage input for channel 0 DCR current sensing.
24 PWML0
O PWM0 low signal/DrMOS enable.
25 PWMH0
O PWM0 high signal.
26 PWMH1
O PWM1 high signal.
27 PWML1
O PWM1 low signal/DrMOS enable.
28 ISENB1
I Negative differential voltage input for channel 1 DCR current sensing.
29 ISENA1
I Positive differential voltage input for channel 1 DCR current sensing.
30 VDRV PWR MOSFET driver bias supply regulator output.
31 VR6
PWR Internal 6V reference used to power internal circuitry.
32 VR5
PWR Internal 5V reference used to power internal circuitry.
33 VDD
PWR Supply voltage.
34 IINN
I Input current monitor negative input.
35 IINP
I Input current monitor positive input.
36 V25
PWR Internal 2.5V reference used to power internal circuitry.
37 PG1
O Channel 1 power-good output.
38 VSEN1N
I Differential output channel 1 voltage sense feedback. Connect to negative output regulation point.
39 VSEN1P
I Differential output channel 1 voltage sense feedback. Connect to positive output regulation point.
40 XTEMP1N I External temperature sensor input for channel 1 return.
41 XTEMP1P I External temperature sensor input for channel 1. Connect to external 2N3904 (base emitter junction) or equivalent
embedded thermal diode.
42 EN0
I Enable channel 0. Active signal enables PWM0 switching.
43 EN1
44 SYNC
PAD SGND
I
M/I/O
PWR
Enable channel 1. Active signal enables PWM1 switching.
Clock synchronization input. Used to set the frequency of the internal clock, to sync to an external clock or to output internal
clock.
Exposed thermal pad. Connect to low impedance ground plane. Internal connection to SGND.
NOTE:
1. I = Input, O = Output, PWR = Power or Ground, M = Multimode pins.
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부품번호 | 상세설명 및 기능 | 제조사 |
ZL8800 | DC/DC Digital Controller | Intersil |
ZL8801 | DC/DC Digital Controller | Intersil |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |