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PDF ZL8800 Data sheet ( Hoja de datos )
| Número de pieza | ZL8800 | |
| Descripción | DC/DC Digital Controller | |
| Fabricantes | Intersil | |
| Logotipo |  |
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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.
1 page  
Schematic
VIN
10V TO 14V
VOUT1
1.0V
COUT4
2x680µF
COUT3
4x100µF
C11
1µF
C1
22µF
L2
230nH
R4
1.3k
Q3
C13
0.1µF
Q4
C6
10µF
C9 C5
1µF 10µF
VDD
GH
U3
SW
HSEL PWMH
ZL1505
BST PWML
VDD
VDRV
PWMH1
PWML1
VDRV
VMON
R1
100k
R2
6.65k
PWMH0
GL LSEL
C7
10µF
C8
10µF
C4
0.68µF
ISENA1
PWML0
U1
ZL8800
ISENB1
VSEN1N
VSEN1P
VR6
V25
VR5
R9
10k
ISENA0
ISENB0
VSEN0N
VSEN0P
VSET1
C3
0.68µF
C10
1µF
VDD
U2
GH
SW
PWMH HSEL
ZL1505
PWML BST
LSEL
GL
Q1
C12
0.1µF
Q2
C2
22µF
L1
230nH
R3
1.3k
DDC
SYNC
CONTROL
AND
STATUS
PMBus™
DDC
SYNC
VSET0
SA
EN(0,1)
PG(0,1)
UVLO
SALRT
SDA
SCL
DGND SGND
R5
61.9k
R6
21.5k
R7
36.1k
R8
21.5k
FIGURE 3. SCHEMATIC
COUT1
4x100µF
VOUT0
1.2V
COUT2
2x680µF
5 Page 
ZL8800
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 15) TYP (Note 15) UNIT
OUTPUT CURRENT
OUTPUT CURRENT SENSE RESOLUTION
Low Range
±25mV full scale
- 37.5 -
µV
Medium Range
± 35mV full scale
- 56.25 -
µV
High Range
±50mV full scale
- 75.0 -
µV
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
Output Current DCR Monitor Temperature
Compensation
Factory default
Configurable via PMBus™
3900
ppm/°C
100 12700 ppm/°C
VMON BIAS MONITOR AND FAULT DETECTION
VMON UVLO Threshold Range
Using VMON pin with 16:1 resistor divider
2.85
-
5
V
VMON Accuracy (Note 14)
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
Filter capacitance <100pF
- ±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:
10. Output current is limited by device thermal dissipation.
11. Percentage of Full Scale (FS) with temperature compensation applied.
12. VOUT measured at the termination of the VSENxP and VSENxN sense points.
13. For operation at 400kHz, see PMBus™ Power System Management Protocol Specification Part 1, Section 5.2.6.2 for timing parameter limits.
14. Does not include errors due to resistor divider tolerances.
15. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
16. Only 1 output voltage can track the VTRK input: Channel 0, Channel 1 or the output of a 2-phase configuration.
Submit Document Feedback 11
FN7558.3
September 14, 2015
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ZL8800.PDF ] | |
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