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參數(shù)資料
| 型號(hào)： | MAX5015 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類(lèi)： | 外設(shè)及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁(yè)數(shù)： | 8/14頁(yè) |
| 文件大?。?/td> | 319K |
| 代理商： | MAX5015 |
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Optocoupled Feedback
Isolated voltage feedback is achieved by using an opto-
coupler and a shunt regulator as shown in Figure 2. The
output voltage set point accuracy is a function of the
accuracy of the shunt regulator and feedback resistor-
divider tolerance.
Internal Regulators
The internal regulators of the MAX5014/MAX5015
enable initial startup without a lossy startup resistor and
regulate the voltage at the output of a tertiary (bias)
winding to provide power for the IC. At startup V+ is
regulated down to V
CC
to provide bias for the device.
The V
DD
regulator then regulates from the output of the
tertiary winding to V
CC
. This architecture allows the ter-
tiary winding to only have a small filter capacitor at its
output thus eliminating the additional cost of a filter
inductor.
When designing the tertiary winding calculate the num-
ber of turns so the minimum reflected voltage is always
higher than 12.7V. The maximum reflected voltage
must be less than 36V.
M
Current-Mode PWM Controllers with Integrated
Startup Circuit for Isolated Power Supplies
8
_______________________________________________________________________________________
MAX5015
V
DD
V+
SS_SHDN
NDRV
CS
GND
V
CC
OPTO
V
IN
(36V TO 72V)
V
OUT
OPTOCOUPLER
C
DD
47
μ
F
C
SS
0.1
μ
F
3k
4.75k
C
CC
10
μ
F
100
R
SENSE
100m
20
R
1
25.5k
R
2
8.25k
C
OUT
3
×
560
μ
F
0.1
μ
F
C
IN
3
×
0.47
μ
F
L1
4.7
μ
H
0.1
μ
F
240k
N
T
N
R
N
P
14
N
S
5
M1
IRF640N
4.7nF
250VAC
TLV431
1N4148
6
CMHD2003
1nF
SBL204OCT
5V/10A
220
14
Figure 2. Forward Converter
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| MAX5019CSA | Analog IC |
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| MAX5019-MAX5020 | Current-Mode PWM Controllers with Integrated Startup Circuit |
| MAX5019 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| MAX5020CSA | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5015CSA | 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX5015CSA+ | 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX5015CSA+T | 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX5015CSA-T | 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| MAX5015ESA | 功能描述:電流型 PWM 控制器 w/Integrated Startup RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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