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| 型号： | MAX5052AEVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX5052 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 2，隔离 |
| 输出电压： | 5V，15V |
| 电流 - 输出： | 1.5A，100mA |
| 输入电压： | 36 ~ 72V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 262kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX5052A |
ATION
EVALU
AVAIL
19-2590; Rev 1; 11/03
KIT
ABLE
Current-Mode PWM Controllers with an Error
Amplifier for Isolated/Nonisolated Power Supplies
General Description
The MAX5052/MAX5053 current-mode PWM controllers
contain all the control circuitry required for the design of
wide-input-voltage isolated and nonisolated power
supplies. The MAX5052 is well suited for universal input
(rectified 85VAC to 265VAC) or telecom (-36VDC to
-72VDC) power supplies. The MAX5053 is well suited for
low-input-voltage (10.8VDC to 24VDC) power supplies.
The MAX5052/MAX5053 contain an internal error ampli-
fier that regulates the tertiary winding output voltage.
This implements a primary-side regulated, isolated
power supply, eliminating the need for an optocoupler.
An input undervoltage lockout (UVLO) is provided for
programming the input-supply start voltage and to
ensure proper operation during brownout conditions.
The input-supply start voltage is externally programma-
ble with a voltage-divider. To shutdown the device, the
UVLO pin is pulled low. Internal digital soft-start
reduces output voltage overshoot. The internal thermal
shutdown circuit protects the device in the event the
junction temperature exceeds +130°C.
The MAX5052 has an internal bootstrap UVLO with
large hysteresis that requires a minimum voltage of
23.6V for startup. The MAX5053 does not have the
internal bootstrap UVLO and can be biased directly
from a minimum voltage of 10.8V.
The 262kHz switching frequency is internally trimmed to
±12% accuracy; this allows the optimization of the
magnetic and filter components resulting in compact,
cost-effective power supplies. The MAX5052A/
Features
? Available in a Tiny 8-Pin μMAX Package
? Current-Mode Control
? 50W Output Power
? Universal Offline Input Voltage Range
Rectified 85VAC to 265VAC (MAX5052)
? V IN Directly Driven from 10.8V to 24V Input
(MAX5053)
? Digital Soft-Start
? Programmable Input Startup Voltage
? Internal Bootstrap UVLO with Large Hysteresis
(MAX5052)
? Internal Error Amplifier with 1% Accurate
Reference
? Thermal Shutdown
? 45μA (typ) Startup Supply Current
? 1.4mA (typ) Operating Supply Current
? Fixed Switching Frequency of 262kHz ±12%
? 50% Maximum Duty-Cycle Limit
(MAX5052A/MAX5053A)
? 75% Maximum Duty-Cycle Limit
(MAX5052B/MAX5053B)
? 60ns Cycle-by-Cycle Current-Limit Response Time
Ordering Information
MAX5053A are offered with a 50% maximum duty-cycle
limit. The MAX5052B/MAX5053B are offered with a 75%
maximum duty-cycle limit. These devices are available
in 8-pin μMAX packages and operate over the -40°C to
+85°C temperature range.
PART
MAX5052 AEUA
MAX5052BEUA
MAX5053 AEUA
MAX5053BEUA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 μMAX
8 μMAX
8 μMAX
8 μMAX
Warning: The MAX5052/MAX5053 are designed to work with
Applications
high voltages. Exercise caution.
Universal Input AC
Power Supplies
Isolated Telecom Power
Supplies
Industrial Power
Conversion
Isolated Keep-Alive
Circuits
TOP VIEW
Pin Configuration
Networking Systems
12V Boost Regulators
UVLO/EN 1
8
V IN
Computer Systems/
Servers
12V SEPIC Regulators
FB 2
COMP 3
MAX5052
MAX5053
7
6
V CC
NDRV
Functional Diagram/Typical Operating Circuit/Selector
Guide appear at end of data sheet.
CS 4
μ MAX
5
GND
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5052BEUA | 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 |
| MAX5052BEUA+ | 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 |
| MAX5052BEUA+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 |
| MAX5052BEUA-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 |
| MAX5053 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Current-Mode PWM Controllers with an Error Amplifier for Isolated/Nonisolated Power Supplies |
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