- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383333 > MAX1714 (Maxim Integrated Products, Inc.) High-Speed Step-Down Controller for Notebook Computers PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1714 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Speed Step-Down Controller for Notebook Computers |
| 中文描述： | 高速、降壓型控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 443K |
| 代理商： | MAX1714 |
M
High-Speed Step-Down Controller
for Notebook Computers
______________________________________________________________________________________
11
On-Time One-Shot (TON)
The heart of the PWM core is the one-shot that sets the
high-side switch on-time. This fast, low-jitter, adjustable
one-shot includes circuitry that varies the on-time in
response to battery and output voltage. The high-side
switch on-time is inversely proportional to the battery
voltage as measured by the V+ input, and proportional
to the output voltage. This algorithm results in a nearly
constant switching frequency despite the lack of a fixed-
frequency clock generator. The benefits of a constant
switching frequency are twofold: first, the frequency can
be selected to avoid noise-sensitive regions such as the
455kHz IF band; second, the inductor ripple-current
operating point remains relatively constant, resulting in
easy design methodology and predictable output volt-
age ripple.
On-Time = K (V
OUT
+ 0.075V) / V
IN
REF
-6%
FROM
OUT
REF
FB
ERROR
AMP
TOFF
1-SHOT
TON
REF
+12%
REF
-30%
FEEDBACK
MUX
(SEE FIGURE 9)
CHIP
SUPPLY
x2
SHDN
PGOOD
MAX1714A ONLY
NOTE: IN THE MAX1714B, AGND AND PGND ARE INTERNALLY CONNECTED TO THE GND PIN.
( ) ARE FOR THE MAX1714B ONLY.
(MAX1714B ONLY)
OVP/UVLO
LATCH
ON-TIME
COMPUTE
1-SHOT
TRIG
IN
2V TO 28V
TRIG
Q
Q
S
R
2V
REF
AGND
REF
OUT
(GND)
(GND)
PGND
+5V
OUTPUT
DL
V
CC
V
DD
LX
ZERO CROSSING
CURRENT
LIMIT
DH
BST
9R
R
I
LIM
+5V
+5V
Q
S1
Q
S2
TIMER
SKIP
TON
V+
Σ
MAX1714
S
R
Q
Figure 2. MAX1714 Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1714AEEP | High-Speed Step-Down Controller for Notebook Computers |
| MAX1714BEEE | High-Speed Step-Down Controller for Notebook Computers |
| MAX1715 | Ultra-High Efficiency, Dual Step-Down Controller for Notebook Computers |
| MAX1715EEI | Ultra-High Efficiency, Dual Step-Down Controller for Notebook Computers |
| MAX1717 | Replaced by TMS320VC5506 : Digital Signal Processors 132-BQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX17140AETL+T | 制造商:Maxim Integrated Products 功能描述:DC-DC FOR TV - Tape and Reel |
| MAX17140ETL+ | 功能描述:電池管理 12Ch Battery Sensor w/SMBus Ladder RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX17140ETL+T | 功能描述:電池管理 12Ch Battery Sensor w/SMBus Ladder RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX17140EVKIT+ | 功能描述:電源管理IC開發(fā)工具 MAX17140 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| MAX17141ETG+ | 功能描述:轉(zhuǎn)換 - 電壓電平 V6 Level Shifter RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。