参数资料
| 型号： | ISL6307AIRZ |
| 厂商： | Intersil |
| 文件页数： | 24/33页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 48-QFN |
| 标准包装： | 43 |
| PWM 型： | 电压模式 |
| 输出数： | 6 |
| 频率 - 最大： | 275kHz |
| 占空比： | 66.7% |
| 电源电压： | 4.75 V ~ 5.25 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： | 48-VFQFN 裸露焊盘 |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页当前第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页
ISL6307A
Current Sense Output
The ISL6307A has two current sense output pins, IDROOP
and IOUT and they are identical. In a typical application
where load-line is required, the IDROOP pin is connected to
the FB pin. The IOUT pin was designed for load current
measurement. As shown in typical application schematics
on pages 4 to 7, load current information can be obtained by
measuring the voltage at IOUT pin with a resistor connected
to ground. When the programmable temperature
compensation function of ISL6307A is properly used, the
Those numbers are recommended for accurate temperature
compensation.
There are two comparators with hysteresis to compare the
TM pin voltage to the fixed thresholds for VR_FAN and
VR_HOT signals, respectively. VR_FAN is set high when TM
is lower than 33% of Vcc, and is pulled to GND when TM
increases to above 39% of Vcc. VR_HOT is set high when
TM goes below 28% of Vcc, and is pulled to GND when TM
goes back to above 33% of Vcc. Figure 20 shows operation
of thermal monitoring and indication.
output current at IOUT pin is proportional to load current, as
shown in Figure 17.
VCC
VR_FAN
V_IOUT, 200mV/DIV
R TM1
TM
0.33V CC
VR_HOT
o c
R NTC
0.28V CC
0A
50A
100A
FIGURE 18. BLOCK DIAGRAM OF THERMAL MONITORING
FUNCTION
FIGURE 17. VOLTAGE AT IOUT PIN WITH ARESISTOR TO
GND WHEN LOAD CURRENT CHANGES
Thermal Monitoring (VR_HOT/VR_FAN)
There are two thermal signals to indicate the temperature
status of the voltage regulator: VR_HOT and VR_FAN. Both
VR_FAN and VR_HOT are open-drain outputs, and external
pull-up resistors are required.
VR_FAN indicates that the temperature of the voltage
regulator is high and more cooling airflow is needed.
100%
90%
80%
70%
60%
50%
40%
V TM / V CC vs. Tem perature
VR_HOT can be used to inform the system that the
temperature of the voltage regulator is too high and the CPU
should reduce its power consumption. VR_HOT may be tied
to the CPU’s PROCHOT# signal.
30%
20%
0
20
40 60 80 100
Tem perature ( o C)
120
140
The diagram of thermal monitoring function block is shown in
Figure 18. One NTC resistor should be placed close to the
power stage of the voltage regulator to sense the operational
temperature, and one pull-up resistor is needed to form the
voltage divider for the TM pin. As the temperature of the
power stage increases, the resistance of the NTC will
reduce, resulting in the reduced voltage at the TM pin.
Figure 19 shows the TM voltage over temperature for a
typical design with a recommended 6.8k ? NTC (P/N:
NTHS0805N02N6801 from Vishay) and 1k ? resistor RTM1.
24
FIGURE 19. THE RATIO OF TM VOLTAGE TO NTC
TEMPERATURE WITH RECOMMENDED PARTS
FN9236.0
February 6, 2006
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6307BIRZ | IC REG CTRLR BUCK PWM VM 48-QFN |
| ISL6307IRZ | IC REG CTRLR BUCK PWM VM 48-QFN |
| ISL6308AIRZ | IC CTRLR PWM BUCK 3PHASE 40-QFN |
| ISL6308IRZ | IC CTRLR PWM 3PHASE BUCK 40-QFN |
| ISL6310IRZ | IC CTRLR PWM 2PHASE BUCK 32-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6307AIRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 48-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) |
| ISL6307BCRZ | 功能描述:软开关 PWM 控制器 W/ANNEAL 6-PHS VR11 CNTRLR COM RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL6307BCRZ-T | 功能描述:软开关 PWM 控制器 W/ANNEAL 6-PHS VR11 CNTRLR COM TAPE AND RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL6307BIRZ | 功能描述:软开关 PWM 控制器 W/ANNEAL 6-PHS VR11 CNTRLR INDUSTRIAL RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL6307BIRZ-T | 功能描述:软开关 PWM 控制器 W/ANNEAL 6-PHS VR11 CNTRLR INDUSTRIAL RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。