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| 型号： | ZL9101MIRZ |
| 厂商： | Intersil |
| 文件页数： | 13/19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
.
3.3V TO 5V
C IN
V IN
The ISHARE_CONFIG command is used to configure the module
for active current sharing. The default setting is a stand-alone
non-current sharing module. A current sharing rail can be part of
a system sequencing group.
DDC ZL9101M
C IN
C OUT
For fault configuration, the current share rail is configured in a
quasi-redundant mode. In this mode, when a member module
fails, the remaining members continue to operate and attempt to
maintain regulation. Of the remaining modules, the module with
the lowest member position becomes the reference. If fault
spreading is enabled, the current share rail failure is not
broadcast until the entire current share rail fails.
DDC ZL9101M
C OUT
V OUT
The phase offset of (multi-phase) current sharing modules is
automatically set to a value between 0° and 337.5° in 22.5°
increments as in Equation 3:
FIGURE 14. CURRENT SHARING GROUP
The ZL9101M uses a low-bandwidth, first-order digital current
Phase Offset = SMBus Address [ 4:0 ] – Current
Share Position ? 22.5 °
(EQ. 3)
sharing technique to balance the unequal module output loading
by aligning the load lines of member modules to a reference
module.
Droop resistance is used to add artificial resistance in the output
voltage path to control the slope of the load line curve,
calibrating out the physical parasitic mismatches due to power
train components and PCB layout.
Upon system start-up, the module with the lowest member
position as selected in ISHARE_CONFIG is defined as the
reference module. The remaining modules are members. The
reference module broadcasts its current over the DDC bus. The
members use the reference current information to trim their
voltages (V MEMBER ) to balance the current loading of each
module in the system.
Please refer to Application Note AN2034 for additional details on
current sharing.
Phase Adding/Dropping
The ZL9101M allows multiple power converters to be connected
in parallel to supply higher load currents than can be addressed
using a single-phase design. In doing so, the power converter is
optimized at a load current range that requires all phases to be
operational. During periods of light loading, it may be beneficial
to disable one or more phases to eliminate the current drain and
switching losses associated with those phases, resulting in
higher efficiency.
The ZL9101M offers the ability to add and drop phases using a
PMBus command in response to an observed load current
change. All phases in a current share rail are considered active
prior to the current sharing rail ramp to power-good.
Any member of the current sharing rail can be dropped. If the
V REFERENCE
-R
reference module is dropped, the remaining active module with
the lowest member position becomes the new reference.
V MEMBER
-R
Additionally, any change to the number of members of a current
sharing rail will precipitate autonomous phase distribution within
the rail where all active phases realign their phase position
based on their order within the number of active members.
If the members of a current sharing rail are forced to shut down
due to an observed fault, all members of the rail attempt to
re-start simultaneously after the fault has cleared.
I MEMBER I OUT I REFERENCE
FIGURE 15. ACTIVE CURRENT SHARING
Figure 15 shows that, for load lines with identical slopes, the
member voltage is increased towards the reference voltage
which closes the gap between the inductor currents.
The relation between reference and member current and voltage
is given by Equation 2:
Monitoring via I 2 C/SMBus
A system controller can monitor a wide variety of different
ZL9101M system parameters through the I 2 C/SMBus interface.
The module can monitor for any number of power conversion
parameters including but not limited to the following:
? Input voltage/Output voltage
? Output current
V MEMBER = V OUT + R × ( I REFERENCE – I MEMBER )
where R is the value of the droop resistance.
13
(EQ. 2)
? Internal temperature
? Switching frequency
? Duty cycle
FN7669.4
January 20, 2012
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相关代理商/技术参数 |
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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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