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PDF ZL8801 Data sheet ( Hoja de datos )
| Número de pieza | ZL8801 | |
| Descripción | DC/DC Digital Controller | |
| Fabricantes | Intersil | |
| Logotipo |  |
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DATASHEET
Dual Phase PMBus™ ChargeMode™ Control DC/DC
Digital Controller
ZL8801
The ZL8801 is a dual phase digital DC/DC controller. Up to four
ZL8801s (8 phases) can be operated in parallel to provide
additional output current.
The ZL8801 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 its fully digital ChargeMode™ Control loop the ZL8801
can 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 ZL8801 to communicate between other Intersil
digital power ICs. By using the DDC, the ZL8801 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 ZL8801 features cycle-by-cycle overcurrent protection and
protection for overvoltage, undervoltage, over-temperature and
MOSFET driver under and overvoltage 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 ZL8801 to
be operated from a single input supply eliminating the need
for additional linear regulators. A dedicated 5V VDRV LDO
output can be used to power external drivers or DrMOS
devices.
With full PMBus™ compliance, the ZL8801 is capable of
measuring and reporting input voltage, input current, output
voltage, output current as well as the device’s internal
temperature, an external temperature and an auxiliary voltage
input.
Related Literature
• AN1948, “ZL8801-4PH-DEMO1Z Demonstration Board User
Guide”
• UG005, “ZL8801-2PH-DEMO1Z Demonstration Board User
Guide”
• AN1900, “USB to PMBus™ Adapter User Guide”
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
• Charge mode control achieves fast transient response,
reduced output capacitance and provides output stability
without compensation
• Single 2-phase output, up to 8 phases with multiple devices
• Switching frequency range 200kHz to 1.33MHz
• Proprietary single wire DDC (Digital-DC) serial bus enables
voltage sequencing and fault spreading with all other Intersil
digital power ICs
• Tracking of an external power supply in the single 2-phase
configuration
• 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 cycle-by-cycle 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 standalone MOSFET drivers or
integrated driver-MOSFET (DrMOS) devices
• Nonvolatile memory (NVRAM) for storing operating
parameters and fault events.
• PMBus™ compliant
Applications
• Servers/storage equipment
• Telecom/datacom equipment
• Power supplies (memory, DSP, ASIC, FPGA)
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER DUAL OUTPUT DUAL PHASE DDC CURRENT SHARE
ZL8800
ZL8801
Yes
No
Yes
Yes
No
Yes
March 27, 2015
FN8614.3
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 2014, 2015. All Rights Reserved
Intersil (and design), ChargeMode and Digital-DC are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
Schematic
VIN
10.8 TO 13.2V
C3
10µF
C4
10µF
RIN
1mΩ
(OPTIONAL)
C6
1µF
C5
10µF
IINN VDD
IINP
VDRV
V25
V5 VMON
V6
R8
100kΩ
R9
6.65kΩ
R3
R4
R5
64
CONTROL
AND
STATUS
V5
SYNC
SA
PWMH0
PWML0
VSET0
UVLO
ISENA0
ISENB0
U3
ZL8801
EN IN REVIEW
PG
R7
10kΩ
INTER-DEVICE
COORDINATION
(OPTIONAL)
PMBus
(OPTIONAL)
PWMH1
PWML1
DDC
SYNC
SDA
SCL
ISENA1
ISENB1
VSENN
VSENP
DGND SGND
CIN1
C7
10µF
PVCC VIN
C8
VCC
ISL99140
SW
1µF AGND
PHASE
U1
PWM
BOOT
EN
THDN
PGND SMOD
C9
0.1µF
L1
R1 C1
VIN
CIN2
PVCC VIN
VCC
C10 ISL99140 SW
L2
1µF
PHASE
AGND
U2
BOOT
C11
0.1µF
R2
PWM
THDN
EN PGND SMOD
C2
FIGURE 3. ZL8801 SCHEMATIC
COUT
VOUT
5 Page 
ZL8801
Electrical Specifications VDD = 12V. Typical values are at TA = +25°C. Boldface limits apply across the operating ambient temperature
range, TA -40°C to +85°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN MAX
(Note 14) TYP (Note 14) UNITS
OUTPUT CURRENT SENSE INPUT BIAS CURRENT
VOUT Referenced
ISENA0 or ISENA1
-100
100 nA
ISENB0 or ISENB1
-25 25 µA
OUTPUT CURRENT SENSE MONITOR AND FAULT DETECTION
IOUT Monitor Temperature Compensation
Factory default
3900
ppm/°C
Configurable via PMBus™
100 12700 ppm/°C
VMON BIAS MONITOR AND FAULT DETECTION
VMON UVLO Threshold Range
Using VMON pin with 16:1 resistor divider
2.85
5V
VMON Accuracy (Note 13)
Full Scale (FS) = 1.15V
-2 2 % FS
VMON Resolution
Full Scale (FS) = 1.15V
±0.15
% FS
VMON UV/OV Fault Response Delay
200 µs
TEMPERATURE SENSING
INTERNAL TEMPERATURE SENSOR
Internal Temperature Accuracy
Tested at +100°C
-5 5 °C
Internal Temperature Resolution
1 °C
Thermal Protection Threshold
(junction temperature)
Factory default
Configurable via PMBus™
125
-40 125
°C
°C
Thermal Protection Hysteresis
15 °C
EXTERNAL TEMPERATURE SENSOR: XTEMP0 and XTEMP1
External Temperature Accuracy
±5 °C
External Temperature Resolution
1 °C
Thermal Protection Threshold
Factory default
125 °C
Configurable via PMBus™
-40 125 °C
Thermal Protection Hysteresis
15 °C
NOTES:
9. Output current is limited by device thermal dissipation.
10. Percentage of Full Scale (FS) with temperature compensation applied.
11. VOUT measured at the termination of the VSENP and VSENN sense points.
12. For operation at 400kHz, see PMBus™ Power System Management Protocol Specification Part 1, Section 5.2.6.2 for timing parameter limits.
13. Does not include errors due to resistor divider tolerances.
14. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
Submit Document Feedback 11
FN8614.3
March 27, 2015
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ZL8801.PDF ] | |
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