参数资料
| 型号： | ISL6264CRZ |
| 厂商： | Intersil |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC CORE CTRLR TWO-PHASE 40-QFN |
| 标准包装： | 50 |
| 应用： | 控制器，AMD 移动式 Turion? |
| 输入电压： | 5 V ~ 24 V |
| 输出数： | 1 |
| 输出电压： | 0.38 V ~ 1.55 V |
| 工作温度： | -10°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 管件 |
ISL6264
Theory of Operation
The ISL6264 is a two-phase regulator providing the power to
AMD Mobile CPUs such as the Turion processor and
includes integrated gate drivers for reduced system cost and
V DD
dV 43 μ A
C soft
board area. The regulator provides optimum steady-state
and transient performance for microprocessor core
applications up to 50A. System efficiency is enhanced by
VR_ON
100μs
-------- a ----------------
dt
idling a phase at low-current and implementing automatic
DCM-mode operation when PSI_L is asserted to logic low.
SOFT AND V O
~7.6ms
The heart of the ISL6264 is the R 3 Technology ? , Intersil's
Robust Ripple Regulator modulator. The R 3 modulator
combines the best features of fixed frequency PWM and
hysteretic PWM while eliminating many of their
shortcomings. The ISL6264 modulator internally synthesizes
an analog of the inductor ripple current and uses hysteretic
comparators on those signals to establish PWM pulse
widths. Operating on these large-amplitude, noise-free
synthesized signals allows the ISL6264 to achieve lower
output ripple and lower phase jitter than either conventional
hysteretic or fixed frequency PWM controllers. Unlike
PGOOD
FIGURE 28. SOFT START WAVEFORMS
Static Operation
After the start sequence, the output voltage will be regulated
to the value set by the VID inputs per Table 1. The entire VID
table is presented in the AMD specification. The ISL6264 will
control the no-load output voltage to an accuracy of ±0.5%
over the range of 0.75V to 1.5V.
TABLE 1. V ID TABLE FOR AMD 6-BIT V ID CPU
conventional hysteretic controllers, the ISL6264 has an error
amplifier that allows the controller to maintain a 0.5% voltage
regulation accuracy throughout the VID range from 0.75V to
1.55V.
The hysteresis window voltage is relative to the error
amplifier output such that load current transients results in
increased switching frequency, which gives the R3 regulator
a faster response than conventional fixed frequency PWM
controllers. Transient load current is inherently shared
between active phases due to the use of a common
hysteretic window voltage. Individual average phase
voltages are monitored and controlled to equally share the
static current among the active phases.
Start-up Timing
With the controller's +5V VDD voltage above the POR
threshold, the start-up sequence begins when VR_ON
exceeds the 3.3V logic HIGH threshold. Approximately
100ms later, SOFT and V OUT begin ramping toward the final
VID voltage. At startup, the regulator always operates in a
2-phase CCM mode, regardless of PSI_L control signal
assertion levels. During this interval, the SOFT cap is
charged by a 43μA current source. If the SOFT capacitor is
selected to be 47nF, the SOFT ramp will be at 0.9mV/s slew
rate. Once V OUT is within 10% of the VID voltage,
approximately 7ms later, PGOOD is asserted HIGH. Typical
start-up timing is shown in Figure 28. The SOFT cap is
charged/discharged by approximate 200μA after the
start-up. Therefore, V OUT slews at about 4mV/s to the
voltage set by the VID pins.
VID5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
VID3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
VID2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
0
VID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
0
1
VID0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
VOUT
(V)
1.5500
1.5250
1.5000
1.4750
1.4500
1.4250
1.4000
1.3750
1.3500
1.3250
1.3000
1.2750
1.2500
1.2250
1.2000
1.1750
1.1500
1.1250
1.1000
1.0000
0.9750
0.9500
0.9250
0.9000
14
FN6359.3
May 28, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6264CRZ-T | 功能描述:IC CORE CTRLR TWO-PHASE 40-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 |
| ISL6265 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable |
| ISL6265A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Multi-Output Controller with Integrated MOSFET Drivers for AMD SVI Capable Mobile CPUs |
| ISL6265AHRTZ | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLRS PHS W/EMBEDDED GATE 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 |
| ISL6265AHRTZ-T | 功能描述:电流型 PWM 控制器 MULTI-OUTPUT CNTRLRS PHS W/EMBEDDED GATE 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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