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參數(shù)資料
| 型號： | MAX1636EAP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low-Voltage, Precision Step-Down Controller for Portable CPU Power |
| 中文描述： | 1 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 5.30 MM, MO-150, SSOP-20 |
| 文件頁數(shù)： | 12/24頁 |
| 文件大?。?/td> | 219K |
| 代理商： | MAX1636EAP |
PWM Controller
The heart of the current-mode PWM controller is a
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
M
Low-Voltage, Prec ision S tep-Down
Controller for Portable CPU Power
12
______________________________________________________________________________________
Low
Light
Idle
LOAD
CURRENT
Pulse-skipping,
discontinuous inductor
current
MODE
DESCRIPTION
PWM
High
Light
PWM
Constant-frequency PWM,
continuous inductor current
PWM
High
Heavy
Constant-frequency PWM,
continuous inductor current
Low
Heavy
Constant-frequency PWM,
continuous inductor current
SKIP
Table 3.
SKIP
PWM Table
SHOOT-
THROUGH
CONTROL
R
Q
30mV
R
Q
LEVEL
SHIFT
1X
gm
2X
OSC
LEVEL
SHIFT
CURRENT
LIMIT
SYNCHRONOUS
RECTIFIER CONTROL
SHDN
CK
-100mV
CSH
CSL
FB
CC
REF
BST
DH
LX
VL
DL
PGND
S
S
SLOPE
COMPENSATION
SKIP
COUNTER
DAC
SOFT-START
Figure 3. PWM Controller Functional Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1636EAP+ | 功能描述:DC/DC 開關(guān)控制器 Precision Step-Down for Portable CPU Pwr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1636EAP+T | 功能描述:DC/DC 開關(guān)控制器 Precision Step-Down for Portable CPU Pwr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1636EAP-T | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1637EEE | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1637EEE+ | 功能描述:DC/DC 開關(guān)控制器 Mini Precision Step Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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