参数资料
型号: MAX1636EAP
厂商: Maxim Integrated Products
文件页数: 12/23页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM CM 20-SSOP
标准包装: 66
PWM 型: 电流模式,混合
输出数: 1
频率 - 最大: 330kHz
占空比: 99%
电源电压: 3.15 V ~ 30 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
包装: 管件
Low-Voltage, Precision Step-Down
Controller for Portable CPU Power
Table 3. S K I P PWM Table
PWM Controller
The heart of the current-mode PWM controller is a
S K I P
Low
Low
High
High
LOAD
CURRENT
Light
Heavy
Light
Heavy
MODE
Idle
PWM
PWM
PWM
DESCRIPTION
Pulse-skipping,
discontinuous inductor
current
Constant-frequency PWM,
continuous inductor current
Constant-frequency PWM,
continuous inductor current
Constant-frequency PWM,
continuous inductor current
multi-input, open-loop comparator that sums four sig-
nals: the output voltage error signal with respect to the
reference voltage, the current-sense signal, the inte-
grated voltage-feedback signal, and the slope-
compensation ramp (Figure 3).
The PWM controller is a direct-summing type, lacking a
traditional error amplifier and the phase shift associat-
ed with it. This direct-summing configuration approach-
es ideal cycle-by-cycle control over the output voltage
(Figure 4).
When SKIP = low, Idle Mode circuitry automatically
optimizes efficiency throughout the load-current range.
Idle Mode dramatically improves light-load efficiency
CSH
1X
CSL
FB
2X
REF
CC
gm
R
BST
S
Q
LEVEL
SHIFT
DH
LX
SKIP
30mV
SLOPE
COMPENSATION
OSC
DAC
CURRENT
LIMIT
SHOOT-
THROUGH
CONTROL
SHDN
COUNTER
CK
SOFT-START
SYNCHRONOUS
RECTIFIER CONTROL
R
Q
VGG
-100mV
S
LEVEL
SHIFT
DL
PGND
Figure 3. PWM Controller Functional Diagram
12
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相关代理商/技术参数
参数描述
MAX1636EAP+ 功能描述:DC/DC 开关控制器 Precision Step-Down for Portable CPU Pwr 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
MAX1636EAP+T 功能描述:DC/DC 开关控制器 Precision Step-Down for Portable CPU Pwr 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
MAX1636EAP-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
MAX1637EEE 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
MAX1637EEE+ 功能描述:DC/DC 开关控制器 Mini Precision 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