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参数资料
| 型号： | MAX1960 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| 中文描述： | 2.35V至5.5V、0.5%精度、1MHz PWM降压型控制器，带有电压裕量控制 |
| 文件页数： | 16/29页 |
| 文件大小： | 455K |
| 代理商： | MAX1960 |
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M
where:
V
IN(MAX)
= Maximum input voltage
V
RAMP
= Oscillator ramp voltage = 0.85 x 10
6
/f
S
,
where f
S
= switching frequency
L
O
= Output inductance
C
O
= Output capacitance
The goal is to place the two zeros below crossover and
the two poles above crossover so that crossover
occurs with a single-pole slope. The compensation pro-
cedure is as follows:
Select the crossover frequency such that:
f
0
< f
ZESR
and f
0
<1/5
f
S
Select R1 such that:
where g
mEA
= 2mS.
Place the first zero before the double pole:
Place the third pole at half the switching frequency:
If C2 < 10pF, it can be omitted.
Place the second pole after the ESR zero:
If:
increase R1 and recalculate C1, C2, and C3.
Place the second zero at the double-pole frequency:
Set the output voltage:
R
V
V
V
R
V
V
FB
OUT
FB
FB
4
3
0 8
.
=
×
=
-
,
R
f
C
R
LC
3
1
2
3
2
≥
×
×
π
-
R
g
M
2
1
550
<
=
(
),
R
f
C
ZESR
2
1
2
3
≤
×
×
π
C
f
L
R
C
V
V
RAMP
IN
3
2
1
0
0
0
≤
×
×
×
×
×
π
C
f
R
S
2
1
2
0 5
1
≥
×
π
.
C
f
R
LC
1
1
2
1
≥
×
×
π
0 75
R
g
mEA
1
2
>>
2.35V to 5.5V, 0.5% Accurate, 1MHz PWM
Step-Down Controllers with Voltage Margining
16
______________________________________________________________________________________
DH
V
IN
L
O
C
0
R3
R4
R2
R1
C1
C2
C3
V
OUT
LX
DL
FB
COMP
MAX1960
Figure 5. Type 3 Compensation Network
fp1
fz1
fz2
fp2
fp3
GAIN (dB)
FREQUENCY
Figure 6. Transfer Function for Type 3 Compensation
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1960EEP | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| MAX1961 | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| MAX1962 | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| MAX1962EEP | 2.35V to 5.5V, 0.5% Accurate, 1MHz PWM Step-Down Controllers with Voltage Margining |
| MAX19700 | 10-Bit, 45Msps, Ultra-Low-Power Analog Front-End |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1960EEP | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1960EEP+ | 功能描述:DC/DC 开关控制器 1MHz PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1960EEP+T | 功能描述:DC/DC 开关控制器 1MHz PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1960EEP-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1960EVKIT | 功能描述:电源管理IC开发工具 Evaluation Kit for the MAX1960 MAX1961 MAX1962 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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