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| 型号： | ZL9101MIRZ |
| 厂商： | Intersil |
| 文件页数： | 12/19页 |
| 文件大小： | 0K |
| 描述： | MODULE DGTL DC-DC 12A 21QFN |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 特色产品： | ZL9101M Digital DC/DC Power Module |
| 标准包装： | 96 |
| 系列： | ZL9101M |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 4.5V |
| 电压 - 输入（最大）： | 13.2V |
| Voltage - Output 1： | 0.6 ~ 4 V |
| 电流 - 输出（最大）： | 12A |
| 电源（瓦） - 制造商系列： | 48W |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 21-QFN，变式 |
| 尺寸/尺寸： | 0.59" L x 0.59" W x 0.14" H（15.0mm x 15.0mm x 3.5mm） |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 95% |
| 电源（瓦特）- 最大： | 48W |
ZL9101M
TABLE 2. SMBus ADDRESS RESISTOR SELECTION
should be limited to a value that enables any device to assert the
bus to a voltage that ensures a logic 0 (typically 0.8V at the
R SA (k ? )
10
11
12.1
13.3
14.7
16.2
17.8
19.6
21.5
23.7
26.1, or connect to SGND
28.7, or Open
31.6, or connect to V25 or VR
34.8
38.3
42.2
46.4
51.1
56.2
61.9
68.1
75
82.5
90.9
100
SMBus ADDRESS
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
0x31
device monitoring point), given the pull-up voltage and the
pull-down current capability of the ZL9101M (nominally 4mA).
Phase Spreading
When multiple point-of-load converters share a common DC
input supply, it is desirable to adjust the clock phase offset of
each device such that not all devices start to switch
simultaneously. Setting each converter to start its switching cycle
at a different point in time, can dramatically reduce input
capacitance requirements and efficiency losses. Since the peak
current drawn from the input supply is effectively spread out over
a period of time, the peak current drawn at any given moment is
reduced, and the power losses proportional to the I RMS2 are
reduced dramatically.
To enable phase spreading, all converters must be synchronized
to the same switching clock. The phase offset of each device
may also be set to any value between 0° and 360° in 22.5°
increments via the I 2 C/SMBus interface. Refer to Application
Note AN2033 for further details.
Output Sequencing
A group of Digital-DC modules or devices may be configured to
power-up in a predetermined sequence. This feature is especially
useful when powering advanced processors, FPGAs and ASICs
that require one supply to reach its operating voltage; prior to
another supply reaching its operating voltage in order to avoid
latch-up. Multi-device sequencing can be achieved by configuring
each device through the I 2 C/SMBus interface.
Multiple device sequencing is configured by issuing PMBus
commands to assign the preceding device in the sequencing
chain as well as the device that follows in the sequencing chain.
The Enable pins of all devices in a sequencing group must be tied
together and driven high to initiate a sequenced turn-on of the
group. Enable must be driven low to initiate a sequenced turnoff
of the group.
Digital-DC Bus
The Digital-DC Communications (DDC) bus is used to
communicate between Zilker Labs Digital-DC modules and
devices. This dedicated bus provides the communication channel
between devices for features such as sequencing, fault
spreading, and current sharing. The DDC pin on all Digital-DC
devices in an application should be connected together. A pull-up
resistor is required on the DDC bus in order to guarantee the rise
time as shown in Equation 1:
Refer to Application Note AN2033 for details on sequencing via
the I 2 C/SMBus interface.
Fault Spreading
Digital DC modules and devices can be configured to broadcast a
fault event over the DDC bus to the other devices in the group.
When a non-destructive fault occurs and the device is configured
to shut down on a fault, the device shuts down and broadcasts
the fault event over the DDC bus. The other devices on the DDC
bus shut down simultaneously, if configured to do so, and
Rise Time = R PU ? C LOAD ≈ 1 μ s
(EQ. 1)
attempt to re-start in their prescribed order, if configured to
do so.
where R PU is the DDC bus pull-up resistance and C LOAD is the
bus loading. The pull-up resistor may be tied to an external 3.3V
or 5V supply as long as this voltage is present prior to or during
device power-up. As rules of thumb, each device connected to the
DDC bus presents approximately 10pF of capacitive loading, and
each inch of FR4 PCB trace introduces approximately 2pF. The
ideal design uses a central pull-up resistor that is well-matched
to the total load capacitance. The minimum pull-up resistance
12
Active Current Sharing
Paralleling multiple ZL9101M modules can be used to increase
the output current capability of a single power rail. By connecting
the DDC pins of each module together and configuring the
modules as a current sharing rail, the units share the current
equally within a few percent. Figure 14 illustrates a typical
connection for two modules.
FN7669.4
January 20, 2012
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| ZL9101MIRZ-T | 功能描述:DCDC DGTL PMBUS MODULE 12A 21QFN RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:ZL9101M 标准包装:10 系列:PT4570 类型:隔离 输出数:1 电压 - 输入（最小）:36V 电压 - 输入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:3.3A 电源（瓦） - 制造商系列:30W 电压 - 隔离:1.5kV（1500V） 特点:- 安装类型:表面贴装 封装/外壳:19-SIP SMD 模块 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包装:托盘 工作温度:-40°C ~ 85°C 效率:84% 电源（瓦特）- 最大:30W |
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