ISL6529CB Datasheet

IC型号：
ISL6529CB
PDF描述：
Dual Regulator–Synchronous Rectified Buck PWM and Linear Po...
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460.00KB
PDF页数：
19页
芯片厂家：
INTERSIL

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ISL6529, ISL6529A

frequencies and high load current. Figure 13 shows the

results of the complete system with output capacitor and

compensation network for 45掳 of phase margin.

Because of the large variety of capacitors, varying ESRs and

PC board layouts, Table 1, based upon system simulations

is provided as a starting point guide to aid in the selection of

compensation networks for output capacitors values of 1碌F,

10碌F, 100碌F and 1000碌F with ESR values of 5m鈩? 30m鈩?/div>

and 100m鈩?for each capacitor value. The frequencies

associated with the compensation elements are also shown

to aid in component selection.

Parallel capacitors of the same value and type can be

treated as a combination. For example three 100碌F, 10m鈩?/div>

capacitors may be treated as one 300碌F, 3.3m鈩?capacitor.

Mixed capacitors require more attention. For example the

compensation for a 1000碌F, low ESR capacitor will suffice

for a shunting 10碌F, low ESR capacitor.

TABLE 1. COMPENSATION NETWORKS FOR LINEAR REGULATOR

CAP

ESR

OUTPUT CAPACITOR

DETAIL

Comp

Network

Low Fq Zero

(C4 & R12)

5m鈩?/div>

High Fq

Pole

(C16 & R12)

MidbandGain

R12/R5

OUTPUT CAP

& ESR Zero Fq

Comp

Network

Low Fq

Zero

(C4 & R12)

30m鈩?/div>

High Fq

Pole

(C16 & R12)

Midband Gain

R12/R5

OUTPUT Cap

& ESR Zero Fq

Comp

Network

Low Fq

Zero

(C4 & R12)

100m鈩?/div>

High Fq

Pole

(C16 & R12)

Midband Gain

R12/R5

OUTPUT Cap

& ESR Zero Fq

1碌F

C16 = 10pF

R12 = 47K

C4 = 200pF

17kHz

338kHz

20dB

32MHz

C16 = 10pF

R12 = 47K

C4 = 200pF

17kHz

338kHz

20dB

5.3MHz

C16 = 10pF

R12 = 47K

C4 = 200pF

17kHz

338kHz

20dB

1.6MHz

10碌F

C16 = 10pF

R12 = 47K

C4 = 470pF

7.2kHz

338kHz

20dB

3.2MHz

C16 = 10pF

R12 = 47K

C4 = 470pF

17kHz

338kHz

20dB

530kHz

C16 = 10pF

R12 = 47K

C4 = 470pF

17kHz

338kHz

20dB

160kHz

100碌F

C16 = 10pF

R12 = 200K

C4 = 470pF

1.7kHz

80kHz

33dB

320kHz

C16 = 10pF

R12 = 200K

C4 = 470pF

1.7kHz

80kHz

33dB

53kHz

C16 = 10pF

1000碌F

C16 = 10pF

R12 = 470K

C4 = 470pF

720Hz

34kHz

40dB

32kHz

C16 = 10pF

5.3kHz

C16= 10pF

16kHz

1.6kHz

FN9070.5

April 12, 2005

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ISL6529CB 产品属性

标准包装
50
类别
集成电路 (IC)
家庭
PMIC - 稳压器 - 线性 + 切换式
系列
-
拓扑
降压（降压）同步（1），线性（LDO）（1）
功能
任何功能
输出数
2
频率 - 开关
600kHz
电压/电流 - 输出 1
0.8 V ~ 3.3 V，15A
电压/电流 - 输出 2
0.8 V ~ 3.3 V，4A
电压/电流 - 输出 3
-
带 LED 驱动器
无
带监控器
无
带序列发生器
无
电源电压
3.3V，5V
工作温度
0°C ~ 70°C
安装类型
表面贴装
封装/外壳
14-SOIC（0.154"，3.90mm 宽）
供应商设备封装
14-SOICN
包装
-

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