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参数资料
| 型号： | ISL6524EVAL1 |
| 厂商： | Intersil |
| 文件页数： | 3/12页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD VRM8.5 ISL6524 |
| 标准包装： | 1 |
| 主要目的： | 特殊用途 DC/DC，VRM 电源 |
| 输出及类型： | 4，非隔离 |
| 输出电压： | 1.05 ~ 1.825V，1.2V，1.5V，1.8V |
| 电流 - 输出： | 14A，1A，1A，1A |
| 输入电压： | 3.3V，5V，12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 200kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ISL6524 |
Application Note 9925
should yield a 1ms delay). At time T2, all conditions met,
PGOOD goes high.
3.3V IN
1.8V MCH
Note that the two power good pins are pulled high to VTT
and V CORE , respectively. If TTL compatibility is desired, feel
free to populate the provided spare footprints to ATX3.3V
level (while de-populating the default pull-up resistors).
Transient Response
For transient response testing, the evaluation boards were
1.2V VTT
V CORE
1.5V AGP
subjected to the loading presented in Table 2. Each output
response was recorded while the corresponding transient load
was applied. The results are presented in Figures 4 and 5.
GND>
TABLE 2. TRANSIENT OUTPUT LOADING DESCRIPTION
T0
T1
T2
2.5ms/DIV.
T3
T4
T5
OUTPUT
I OUT(MIN)
(A)
I OUT(MAX)
(A)
dI OUT /dt
(A/ μ s )
FREQUENCY
(Hz)
FIGURE 2. ISL6524EVAL1 START-UP
ISL6523EVAL1
V CORE
2.0
22.0
1.0
2500
Power Good Operation
(VOUT1)
The ISL6523 and ISL6524 output two PGOOD indicators
1.2VVTT
1.0
10.0
1.0
2000
(both open-collector outputs). VTTPG is maintained high
(VOUT2)
(pulled high by external pull-up resistor) as long as the
1.5VAGP
0.3
3.0
1.0
1500
1.2VVTT output exceeds 1.08V (90%; as sensed at the
(VOUT3)
VSEN pin). PGOOD is high for as long as V CORE is within
1.8VMCH
0.3
3.0
1.0
3000
power good limits (+/-10%), all linears are above their
undervoltage (UV) thresholds, and VTTPG is also high.
(VOUT4)
ISL6524EVAL1
V CORE
2.0
22.0
1.0
2500
(VOUT1)
1.2VVTT
0.5
6.0
1.0
2000
(VOUT2)
1.5VAGP
0.3
3.0
1.0
1500
1.8V MCH
(VOUT3)
V CORE
1.5V AGP
1.8VMCH
(VOUT4)
0.3
3.0
1.0
3000
NOTE: All transients 30% duty cycle.
1.2V VTT
GND>
VTTPG
2.5ms/DIV.
PGOOD
V CORE
T0
T1
T2
1.75V>
FIGURE 3. ISL6524EVAL1 POWER GOOD INDICATORS
1.20V>
1.2V VTT
Figure 3 details the operation of the power good functions.
Following the 1.2VVTT output rising above 1.08V at time T0,
VTTPG goes high simultaneously with enabling of the
V CORE regulator, approximately 4.5ms later. This timing
delay is given by the SS13 capacitor charging under a 28 μ A
constant current, to about 1.25V (bottom of internal oscillator
ramp). To reduce the delay, while preserving the same
1.50V>
1.80V>
1.5V AGP
1.8V MCH
ramping rate for the V CORE output, insert a resistor (footprint
provided; R18 and R22, respectively) of up to 100k ? in
series with the SS13 soft-start capacitor (100k ? resistor
3
100 μ s/DIV.
FIGURE 4. ISL6524EVAL1 OUTPUT TRANSIENT RESPONSE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6525CB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 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:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6525CB-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 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:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6525CBZ | 功能描述:电压模式 PWM 控制器 VTT REG FORVRM 8.5 1 4LD RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| ISL6525CBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC 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) |
| ISL6526ACB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 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:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
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