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| 型号： | ZL6105ALAFTK |
| 厂商： | Intersil |
| 文件页数： | 31/35页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 36-QFN |
| 标准包装： | 1,000 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.4MHz |
| 占空比： | 95% |
| 电源电压： | 3 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： | 36-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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ZL6105
The phase offset of a current sharing group is automatically set
to a value between 0° and 337.5° in 22.5° increments as
follows:
Phase Offset = (SMBus Address[4:0] – Current Share
? Internal and external temperature
? Switching frequency
? Duty cycle
Position) * 22.5°
(EQ. 38)
The PMBus Host should respond to SALRT as follows:
The phase of the individual members in a group are spread
evenly from the phase offset of the group.
Please refer to Application Note AN2034 for additional details on
current sharing.
Phase Adding/Dropping
The ZL6105 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 in order to eliminate the current
drain and switching losses associated with those phases,
resulting in higher efficiency.
The ZL6105 offers the ability to add and drop phases using a the
phase enable pin or 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.
Phases can be dropped after power-good is reached. The phase
enable pin can be used to drop and add phases:
? Set PH_EN = 0 to drop a phase
? Set PH_EN = 1 to add a phase
The time to detect a change of state of the phase enable pin is
between 0ms and 3ms (max).
Any member of the current sharing rail can be dropped. 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 will attempt to
re-start simultaneously after the fault has cleared.
For single phase operation, that is, not current sharing, the
PH_EN pin is ignored and can be left open.
Monitoring via I 2 C/SMBus
A system controller can monitor a wide variety of different
ZL6105 system parameters through the I 2 C/SMBus interface.
1. ZL device pulls SALRT low.
2. PMBus Host detects that SALRT is now low, performs
transmission with Alert Response Address to find which ZL
device is pulling SALRT low.
3. PMBus Host talks to the ZL device that has pulled SALRT low.
The actions that the host performs are up to the System
Designer.
If multiple devices are faulting, SALRT will still be low after doing
the above steps and will require transmission with the Alert
Response Address repeatedly until all faults are cleared.
Please refer to Application Note AN2033 for details on how to
monitor specific parameters via the I 2 C/SMBus interface.
Snapshot Parameter Capture
The ZL6105 offers a special feature that enables the user to
capture parametric data during normal operation or following a
fault. The Snapshot functionality is enabled by setting Bit 1 of
MISC_CONFIG to 1.
See AN2033 for details on using the Snapshot in addition to the
parameters supported.
The Snapshot feature enables the user to read status and
parameters via a block read transfer through the SMBus. This can
be done during normal operation, although it should be noted that
reading the 22 bytes will occupy the SMBus for some time.
The SNAPSHOT_CONTROL command enables the user to store
the snapshot parameters to Flash memory in response to a
pending fault as well as to read the stored data from Flash
memory after a fault has occurred. Table 30 describes the usage
of this command. Automatic writes to Flash memory following a
fault are triggered when any fault threshold level is exceeded,
provided that the specific fault’s response is to shut down
(writing to Flash memory is not allowed if the device is configured
to re-try following the specific fault condition). It should also be
noted that the device’s V DD voltage must be maintained during
the time when the device is writing the data to Flash memory; a
process that requires between 700μs to 1400μs depending on
whether the data is set up for a block write. Undesirable results
may be observed if the device’s V DD supply drops below 3.0V
during this process.
TABLE 30. SNAPSHOT_CONTROL COMMAND
The device can monitor for fault conditions by monitoring the
SALRT pin, which will be pulled low when any number of pre-
configured fault conditions occur.
The device can also be monitored continuously for any number of
power conversion parameters including but not limited to the
following:
? Input voltage/Output voltage
? Output current
31
DATA
VALUE
1
2
DESCRIPTION
Copies current SNAPSHOT values from Flash memory to
RAM for immediate access using SNAPSHOT command.
Writes current SNAPSHOT values to Flash memory. Only
available when device is disabled.
FN6906.5
December 19, 2013
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ZL6105ALAFTKR5546 | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| ZL6105ALAFTKR5549 | 制造商:Intersil Corporation 功能描述:ADAPTIVE DIGITAL DC-DC CONTROLLER W/ DRIVERS & I-SHARING FE0 - Tape and Reel |
| ZL6105ALAFTKR5553 | 制造商:Intersil Corporation 功能描述:ADAPTIVE DIGITAL DC-DC CONTROLLER W/ DRIVERS & I-SHARING MOD - Tape and Reel |
| ZL6105ALAFTKR5554 | 制造商:Intersil Corporation 功能描述:ADAPTIVE DIGITAL DC-DC CONTROLLER W/ DRIVERS & I-SHARING MOD - Tape and Reel |
| ZL6105ALAFTR5546 | 功能描述:IC REG CTRLR BUCK PWM VM 36-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
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