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参数资料
| 型号： | MAX5053BEUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST ISO PWM 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 290kHz |
| 占空比： | 76% |
| 电源电压： | 10.8 V ~ 24 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
Current-Mode PWM Controllers with an Error
Amplifier for Isolated/Nonisolated Power Supplies
IN
FB_P
D8
D6
L2
5
T1
9
D2
VOUT2 (+15V/0.1A)
R6
33k ?
C16
15 μ F
35V
C12
0.22 μ F
R7
1.2k ?
R12
1.2k ?
D7 *
OPEN
4
10
8
C5
47 μ F
25V
D5
C15
1 μ F
SGND
+V IN
+VIN
3
7
D1
L1
VOUT1 (+5V/1.5A)
C1
1 μ F
100V
C2
1 μ F
100V
R8 *
OPEN
C10 *
OPEN
2
1
6
C6
C3
68 μ F
6.3V
D4
C13
1 μ F
C4
22 μ F
6.3V
SGND
FB_P
R1
22.6k ?
1%
IN
D3 *
OPEN
0.0047 μ F
250VAC
R2
2.49k ?
1%
R9
4.3k ?
C14
2
C9
2200pF
3
FB
COMP
U1
V IN
NDRV
8
6
C11
0.22 μ F
R10
4
5 6
12
78
N1
3
+V IN
R3
0.022 μ F
1
MAX5052A
UVLO/EN
CS
4
0 ?
C8
R11
100 ?
1M ?
1%
OPEN
R5
0.17 ?
R4
42.2k ?
C7
0.22 μ F
7
V CC
GND
5
1%
-VIN
SHDN
1%
JU1
*COMPONENTS MARKED "OPEN" ARE OPTIONAL.
(SEE MAX5052A EV KIT DATA SHEET.)
Figure 5. Primary Regulated, Dual-Output, Isolated Telecom Power Supply
where V REF = 1.23V. The amplifier’s noninverting input
OSCILLATOR
1.048MHz
D
Q
Q
D
Q
Q
262kHz WITH 50%
(MAX5052A/MAX5053A)
262kHz WITH 75%
(MAX5052B/MAX5053B)
is internally connected to a digital soft-start circuit that
gradually increases the reference voltage during start-
up and is applied to this pin. This forces the output volt-
age to come up in an orderly and well-defined manner
under all load conditions.
Figure 6. Internal Oscillator
Internal Error Amplifier
The MAX5052/MAX5053 include an internal error ampli-
The error amplifier may also be used to regulate the ter-
tiary winding output which implements a primary-side
regulated, isolated power supply (see Figure 5).
Calculate the output voltage using the following equation:
? V REF + V D 6 ?
?
fier that can be used to regulate the output voltage in
the case of a nonisolated power supply (see Figure 1)
Calculate the output voltage using the following equation:
V OUT 1 =
N S
N T
? ?
? ? 1 +
? ?
R 2 ?
R 1 ? ?
?
V D 1
? R 5 ?
V OUT = ? 1 + ? V REF
? R 6 ?
where N S is the number of secondary turns for V OUT1 ,
N T is the number of tertiary winding turns, and both V D6
and V D1 are the diode drops at the respective outputs.
10
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相关代理商/技术参数 |
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|---|---|
| MAX5053BEUA+ | 功能描述:电流型 PWM 控制器 w/Error Amplifier RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5053BEUA+T | 功能描述:电流型 PWM 控制器 w/Error Amplifier RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5053BEUA-T | 功能描述:电流型 PWM 控制器 w/Error Amplifier RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX5054 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4A, 20ns, Dual MOSFET Drivers |
| MAX5054_10 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:4A, 20ns, Dual MOSFET Drivers |
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