参数资料
| 型号： | ISL6313BIRZ |
| 厂商： | Intersil |
| 文件页数： | 22/33页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM 2PHASE BUCK 36-QFN |
| 产品培训模块： | Solutions for Industrial Control Applications |
| 标准包装： | 50 |
| 应用： | 控制器，Intel VR11，AMD CPU |
| 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： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 管件 |
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ISL6313B
voltage to the final DAC voltage is referred to as tDB, and
can be calculated as shown in Equation 22:
exceeding the DAC setting, the output drives are enabled at
the end of the soft-start period, leading to an abrupt correction
tDB = V VID ? R
SS
? 8 ? 10
– 3
( μ s )
(EQ. 22)
in the output voltage down to the DAC-set level.
Fault Monitoring and Protection
At the end of soft-start, PGOOD will immediately go high if
the VSEN voltage is within the undervoltage and overvoltage
limits.
V OUT , 500mV/DIV
The ISL6313B actively monitors output voltage and current
to detect fault conditions. Fault monitors trigger protective
measures to prevent damage to a microprocessor load. One
common power good indicator is provided for linking to
external system monitors. The schematic in Figure 16
outlines the interaction between the fault monitors and the
power-good signal.
t dA
t dB
I AVG
100μA
+
OCP
-
+
OCL
-
I 1
140μA
EN
VDAC + RGND
REPEAT FOR
EACH CHANNEL
PGOOD
SS
+175mV
OR
+225mV
+
OCP
-
IOUT
V OCP
500μs/DIV
FIGURE 14. SOFT-START WAVEFORMS
Pre-Biased Soft-Start
The ISL6313B also has the ability to start up into a
1.260V
SOFT-START, FAULT
AND CONTROL LOGIC
pre-charged output, without causing any unnecessary
disturbance. The FB pin is monitored during soft-start, and
should it be higher than the equivalent internal ramping
reference voltage, the output drives hold both MOSFETs off.
VSEN
-
+
-
OVP
PGOOD
OUTPUT PRECHARGED
ABOVE DAC LEVEL
-350mV
+
UV
VDAC + RGND
ISL6313B INTERNAL CIRCUITRY
OUTPUT PRECHARGED
BELOW DAC LEVEL
FIGURE 16. POWER GOOD AND PROTECTION CIRCUITRY
Power-Good Signal
GND>
GND>
T1 T2
T3
V OUT (0.5V/DIV)
EN (5V/DIV)
The power-good pin (PGOOD) is an open-drain logic output
that signals whether or not the ISL6313B is regulating the
output voltage within the proper levels, and whether any fault
conditions exist. This pin should be tied through a resistor to
a voltage source that’s equal to or less then VCC.
For Intel mode of operation, PGOOD indicates whether VSEN
is within specified overvoltage and undervoltage limits after a
FIGURE 15. SOFT-START WAVEFORMS FOR ISL6313B-
BASED MULTI-PHASE CONVERTER
Once the internal ramping reference exceeds the FB pin
potential, the output drives are enabled, allowing the output to
ramp from the pre-charged level to the final level dictated by
the DAC setting. Should the output be pre-charged to a level
22
fixed delay from the end of soft-start. PGOOD transitions low
when an undervoltage, overvoltage, or overcurrent condition
is detected or when the controller is disabled by a reset from
EN, POR, or one of the no-CPU VID codes. In the event of
an overvoltage or overcurrent condition, or a no-CPU VID
code, the controller latches off and PGOOD will not return
high until EN is toggled and a successful soft-start is
FN6809.0
November 6, 2008
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| ISL6313BIRZ-T | 功能描述:IC CTRLR PWM BUCK 2PHASE 36-TQFN 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 |
| ISL6313CRZ | 制造商:Intersil Corporation 功能描述:TWO-PHASE BUCK PWM CNTRLR W/ INTEGRATED MOSFET DRVRS FOR INT - Rail/Tube 制造商:Intersil Corporation 功能描述:Switching Controllers 2-PH PWM CNTRLR W/2 INTEGRTD DRVRS 36LD |
| ISL6313CRZ-T | 功能描述:IC CTRLR PWM 2PHASE BUCK 36-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 |
| ISL6313IRZ | 功能描述:IC CTRLR PWM 2PHASE BUCK 36-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 |
| ISL6313IRZ-T | 功能描述:IC CTRLR PWM 2PHASE BUCK 36-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 |
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