参数资料
| 型号： | ISL6266HRZ |
| 厂商： | Intersil |
| 文件页数： | 20/30页 |
| 文件大小： | 0K |
| 描述： | IC CORE CTRLR 2PHASE 48-QFN |
| 标准包装： | 43 |
| 应用： | 转换器，Intel IMVP-6 |
| 输入电压： | 5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.3 V ~ 1.5 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN（7x7） |
| 包装： | 管件 |
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ISL6266, ISL6266A
While transitioning to single-phase operation, the controller
smoothly transitions current from the idling-phase to the active-
phase, and detects the idling-phase zero-current condition.
During transitions into automatic-DCM or forced-CCM mode,
the timing is carefully adjusted to eliminate output voltage
excursions. When a phase is added, the current balance
between phases is quickly restored.
When commanded into 1-phase CCM operation according
to Table 2, both MOSFETs of Phase 2 will be off. The
controller will thus eliminate switching losses associated with
the unneeded channel.
V OUT AND V SOFT
The ISL6266A can be configured to operate as a single
phase regulator using the same layout as a two phase
design to accommodate lower power CPUs. To accomplish
this, the designer must connect ISEN1 and ISEN2 to
VCC_PRM (reference AN1376 for signal names). Channel 2
components can be removed as well as current balance
circuitry. The ISL6266A will power-up and regulate in DCM
or CCM based on the state of PSI#, as outlined in Table 2.
The OCP threshold will also change based on the state of
PSI#, as outlined in “Protection” on page 20.
Dynamic Operation
Figure 35 shows that the ISL6266A responds to changes in
-2.5mV/μs
DPRSLPVR
VID#
2.5mV/μs
10mV/μs
VID command voltage by slewing to new voltages with a
dV/dt set by the SOFT capacitor and by the state of
DPRSLPVR. With C SOFT = 15nF and DPRSLPVR HIGH,
the output voltage will move at ±2.8mV/μs for large changes
in voltage. For DPRSLPVR LOW, the large signal dV/dt will
be ±10mV/μs. As the output voltage approaches the VID
command value, the dV/dt moderates to prevent overshoot.
Keeping DPRSLPVR HIGH for voltage transitions into and
out of Deeper Sleep will result in low dV/dt output voltage
changes with resulting minimized audio noise. For fastest
recovery from Deeper Sleep to Active mode, holding
FIGURE 35. DEEPER SLEEP TRANSITION SHOWING
DPRSLPVR'S EFFECT ON EXIT SLEW RATE
When commanded to single-phase DCM mode, both
MOSFETs associated with Phase 2 are off, and the
ISL6266A turns off the lower MOSFET of Channel 1
whenever the Channel 1 current decays to zero. As load is
further reduced, the Phase 1 channel switching frequency
decreases to maintain high efficiency. The operation of the
inactive for 1-phase DCM and 1-phase CCM described
previously refers to the ISL6266A only. See “ISL6266
Features” on page 21 for information on the ISL6266.
DPRSLPVR LOW results in maximum dV/dt. Therefore, the
ISL6266A is IMVP-6+ compliant for DPRSTP# and
DPRSLPVR logic.
Intersil's R 3 Technology? has intrinsic voltage feedforward.
As a result, high-speed input voltage steps do not result in
significant output voltage perturbations. In response to load
current step increases, the ISL6266A will transiently raise
the switching frequency so that response time is decreased
and current is shared by two channels.
Protection
The ISL6266A provides overcurrent, overvoltage,
undervoltage protection and over-temperature protection, as
shown in Table 3.
TABLE 3. FAULT-PROTECTION SUMMARY OF ISL6266, ISL6266A
FAULT DURATION PRIOR
TO PROTECTION
PROTECTION ACTIONS
FAULT RESET
Overcurrent fault
Way-Overcurrent fault
120μs
<2μs
PWM1, PWM2 three-state, PGOOD latched low
PWM1, PWM2 three-state, PGOOD latched low
VR_ON toggle or VDD toggle
VR_ON toggle or VDD toggle
Overvoltage fault (1.7V)
Immediately
Low-side MOSFET on until V CORE <0.85V, then PWM VDD toggle
three-state, PGOOD latched low (0V to 1.7V always)
Overvoltage fault (+200mV)
Undervoltage fault
1ms
1ms
PWM1, PWM2 three-state, PGOOD latched low
PWM1, PWM2 three-state, PGOOD latched low
VR_ON toggle or VDD toggle
VR_ON toggle or VDD toggle
(-300mV)
Current imbalance fault
1ms
PWM1, PWM2 three-state, PGOOD latched low
VR_ON toggle or VDD toggle
(7.5mV)
Over-temperature fault
Immediately
VR_TT# goes low
N/A
(NTC <1.18V)
20
FN6398.3
June 14, 2010
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6266HRZ-T | 功能描述:IC CORE CTRLR 2PHASE 48-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| ISL6267 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multiphase PWM Regulator for AMD Fusion Mobile CPUs |
| ISL6267EVAL1Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multiphase PWM Regulator for AMD Fusion Mobile CPUs |
| ISL6267HRZ | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLR FOR AMD FUSION UP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6267HRZ-T | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLR FOR AMD FUSION UP RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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