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参数资料
| 型号： | MIC28500 2A EV |
| 厂商： | Micrel Inc |
| 文件页数： | 1/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR MIC28500 2A |
| 标准包装： | 1 |
| 系列： | Hyper Speed Control™，SuperSwitcher II™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 12V |
| 电流 - 输出： | 2A |
| 输入电压： | 30 ~ 75V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 250kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MIC28500 |
| 其它名称： | 576-4019 |
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MIC28500
75V/4A Hyper Speed Control ?
Synchronous DC-DC Buck Regulator
SuperSwitcher II ?
General Description
Features
The Micrel MIC28500 is an adjustable frequency,
synchronous buck regulator featuring a unique adaptive on-
time control architecture. The MIC28500 operates over an
input supply range of 30V to 75V and provides a regulated
output of up to 4A of output current. The output voltage is
adjustable down to 0.8V with a guaranteed accuracy of ±1%.
Micrel’s Hyper Speed Control ? architecture allows for ultra-
fast transient response while reducing the output capacitance
and also makes (High V IN )/(Low V OUT ) operation possible.
This adaptive t ON ripple control architecture combines the
advantages of fixed-frequency operation and fast transient
response in a single device.
The MIC28500 offers a full suite of protection features to
ensure protection of the IC during fault conditions. These
include undervoltage lockout to ensure proper operation
under power-sag conditions, internal soft-start to reduce
inrush current, foldback current limit, “hiccup” mode short-
circuit protection and thermal shutdown.
All support documentation can be found on Micrel’s web
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Hyper Speed Control ? architecture enables
- High Delta V operation (V IN = 75V and V OUT = 0.8V)
- Small output capacitance
30V to 75V voltage input
Adjustable output down to 0.8V
±1% FB accuracy
Any Capacitor ? Stable
- Zero-ESR to high-ESR output capacitors
4A output current capability, up to 90% efficiency
100kHz to 500kHz switching frequency
Internal compensation
Foldback current-limit and “hiccup” mode short-circuit
protection
Thermal shutdown
Supports safe startup into a pre-biased load
–40 ° C to +125 ° C junction temperature range
28-pin 5mm × 6mm MLF ? package
site at: www.micrel.com .
Applications
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Distributed power systems
Communications/networking infrastructure
Set-top box, gateways and routers
Printers, scanners, graphic cards and video cards
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Typical Application
Efficiency (V IN = 48V)
vs. Output Current
100
90
80
70
60
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
50
40
30
20
10
f SW = 250kHz
1.0V
0.8V
0
1
2
3
4
5
6
OUTPUT CURRENT (A)
Hyper Speed Control, SuperSwitcher II and Any Capacitor are trademarks of Micrel, Inc.
MLF and Micro LeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
June 2011
M9999-060311-B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC28500YJL TR | 功能描述:直流/直流开关调节器 75V/4A DC-DC Buck Regulator with HSC RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC28500YJLTR | 制造商:Micrel 功能描述:Conv DC DC Step Down 0.8 12V 28 Pin MLF |
| MIC28500YJL-TR | 功能描述:Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 4A 28-PowerVQFN Variant, 28-MLF? 制造商:microchip technology 系列:Hyper Speed Control?，SuperSwitcher II? 包装:剪切带（CT） 零件状态:过期 功能:降压 输出配置:正 拓扑:降压 输出类型:可调式 输出数:1 电压 - 输入（最小值）:30V 电压 - 输入（最大值）:75V 电压 - 输出（最小值/固定）:0.8V 电压 - 输出（最大值）:61.5V 电流 - 输出:4A 频率 - 开关:100kHz ~ 500kHz 同步整流器:是 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:28-PowerVQFN 变式，28-MLF? 供应商器件封装:28-MLF?（5x6） 标准包装:1 |
| MIC28510 12V EV | 功能描述:电源管理IC开发工具 75V/4A DC-DC Buck Regulator with HSC - Evaluation Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MIC28510 5V EV | 功能描述:电源管理IC开发工具 75V/4A DC-DC Buck Regulator with HSC - Evaluation Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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