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| 型号： | ZL2004ALNFT1 |
| 厂商： | Intersil |
| 文件页数： | 36/42页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK SYNC ADJ 32QFN |
| 标准包装： | 1,000 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | * |
| 占空比： | 95% |
| 电源电压： | 4.5 V ~ 14 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | * |
| 包装： | * |
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ZL2004
6.16 Phase Adding/Dropping
The ZL2004 allows multiple power converters to be
connected in parallel to supply higher load currents
V REFERENCE
V MEMBER
-R
-R
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 in order to eliminate the
current drain and switching losses associated with
those phases, resulting in higher efficiency.
The ZL2004 offers the ability to add and drop phases
I MEMBER
I OUT
I REFERENCE
using a simple command in response to an observed
load current change, enabling the system to
Figure 20. Active Current Sharing
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 the following equation:
continuously optimize overall efficiency across a wide
load range. All phases in a current share rail are
considered active prior to the current sharing rail ramp
to power-good.
Phases can be dropped after power-good is reached.
Any member of the current sharing rail can be
dropped. If the reference device is dropped, the
remaining active device with the lowest member
position will become the new reference.
V member
V OUT
R
I REFERENCE I MEMBER
Additionally, any change to the number of members of
6.17 Monitoring via I C/SMBus
where R is the value of the droop resistance.
The ISHARE_CONFIG command is used to configure
the device for active current sharing. The default
setting is a stand-alone non-current sharing device. A
current sharing rail can be part of a system sequencing
group.
For fault configuration, the current share rail is
configured in a quasi-redundant mode. In this mode,
when a member device fails, the remaining members
will continue to operate and attempt to maintain
regulation. The device with the lowest member
position will become the reference. If fault spreading is
enabled, the current share rail failure is not broadcast
until the entire current share rail fails.
Up to eight (8) devices can be configured in a given
current sharing rail.
36
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 will attempt to re-start simultaneously after the
fault has cleared.
2
A system controller can monitor a wide variety of
different ZL2004 system parameters through the
I 2 C/SMBus interface. The device can monitor for fault
conditions by monitoring the SALRT pin, which will
be asserted when any number of pre-configured fault
conditions occur.
FN6846.3
February 15, 2011
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZL2004ALNFT1-01 | 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5 |
| ZL2004ALNN | 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ZL2004ALNN-01 | 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ZL2004ALNNT | 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
| ZL2004ALNNT-01 | 功能描述:IC REG CTRLR BUCK SYNC ADJ 32QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF) |
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