- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383336 > MAX1800EHJ (MAXIM INTEGRATED PRODUCTS INC) Digital Camera Step-Up Power Supply PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX1800EHJ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Digital Camera Step-Up Power Supply |
| 中文描述： | 2 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封裝： | 5 X 5 MM, 1 MM HEIGHT, TQFP-32 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大小： | 461K |
| 代理商： | MAX1800EHJ |
M
Digital Camera Step-Up
Power Supply
______________________________________________________________________________________
19
The Bode plot of the loop gain of this control circuit is
shown in Figure 7.
To configure the compensation network for a stable
control loop, set the crossover frequency at that of the
zero due to the output capacitor ESR. Use the following
procedure:
1) Determine the frequency of the right-half-plane
zero:
2) Find the DC loop gain:
A
VDC
= 2000 V
OUT
V
IN
3) Determine the frequency of the complex pole pair
due to the inductor and output capacitor:
V
V
IN
2
π
4) Since response is 2nd order (-40dB per decade)
between the complex pole pair and the ESR zero,
determine the desired amplitude at the complex
pole pair to force the crossover frequency equal to
the ESR zero frequency. Thus:
5) Determine the desired compensation pole. Since
the response between the compensation pole and
the complex pole pair is 1st order (-20dB per
decade), the ratio of the frequencies is equal to the
ratio of the amplitudes at those frequencies. Thus:
Solving this equation for C
C
:
6) Determine that the compensation resistor, R
C
for
the compensation zero frequency, is equal to the
complex pole-pair frequency:
Z
C
= P
O
Solving for R
C
:
R
V
LC
V
C
C
IN
OUT
OUT
C
=
C
V
M
V
L
C
OUT COUT
ESR
IN
=
( )
)
3
2
1
2
2
20
P
P
A
A P
(
O
C
DC
O
=
)
A P
( )
=
Z
P
LV
C
ESR V
O
O
O
IN
OUT
OUT
=
2
2
2
f
LC
O
OUT
OUT
=
Z
(1 - D) R
2 L
RHP
LOAD
=
D
1
Q
1
L
1
L
2
C
2
C
C
R
1
OUTPUT
3.3V
R
2
R
C
MAIN
IN
COMP
DCON
PART OF
MAX1800
DL
FB
INPUT
1-CELL
LITHIUM-ION
Figure 8. Auxiliary SEPIC Configuration
FREQUENCY
A
VDC
GAIN
(dB)
PHASE
180
°
90
°
0
°
O dB
PHASE
GAIN
Z
C
=P
O
PC
Z
O
Z
rRHP
PHASE
MARGIN
GAIN
MARGIN
Figure 7. MAX1800 Continuous-Current, Voltage-Mode,
Step-Up Converter Bode Plot
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1800 | Digital Camera Step-Up Power Supply |
| MAX1806 | 3A Fixed Low Dropout Linear Regulator (LDO) |
| MAX1806EUA | 3A Fixed Low Dropout Linear Regulator (LDO) |
| MAX1806EUA08 | 3A Fixed Low Dropout Linear Regulator (LDO) |
| MAX1806EUA15 | 3A Fixed Low Dropout Linear Regulator (LDO) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1800EHJ-T | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| MAX1800EVKIT | 功能描述:電源管理IC開發(fā)工具 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 |
| MAX1801EKA | 制造商:Maxim Integrated Products 功能描述:DIGITAL CAMERA STEP-UP SLAVE DC-DC - Rail/Tube |
| MAX1801EKA+ | 制造商:Maxim Integrated Products 功能描述:DC DC CNTRLR SGL-OUT STEP UP 2.7V TO 5.5V 8PIN SOT-23 - Rail/Tube |
| MAX1801EKA+T | 功能描述:DC/DC 開關(guān)控制器 Step-Up Slave DC/DC Controller 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(fēng)格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。