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参数资料
| 型号： | MAX15037ATE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/25页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BST SYNC ADJ 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 23 V |
| 输入电压： | 4.5 V ~ 23 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 312kHz ~ 2.1MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
2.2MHz, 3A Buck or Boost Converters
with an Integrated High-Side Switch
Boost Converter Compensation
where ω C = 2 π f C.
The boost converter compensation gets complicated
due to the presence of a right-half-plane zero f ZERO,RHP .
The right-half-plane zero causes a drop in-phase while
4) Place a pole
( f P 1 =
1
2 π × R A × C A
)
at f ZERO,RHP .
adding positive (+1) slope to the gain curve. It is impor-
tant to drop the gain significantly below unity before the
RHP frequency. Use the following procedure to calculate
the compensation components. (See Figure 4.)
R A =
1
2 π × f ZERO , R HP × C A
f LC =
f ZERO , RHP =
( f Z 2 =
R 1 =
? R A
1) Calculate the LC double-pole frequency, f LC , and
the right half plane zero frequency.
1 ? D
2 π × LC OUT
( 1 ? D ) 2 R ( MIN )
2 π × L
1
2 π × R 1 × C A
5) Place the second zero
1
2 π × f LC × C A
)
at f LC .
where:
6) Place the second pole
( f P 2 =
1
2 π × R F × C CF
)
at 1/2
D = 1 ?
R ( MIN ) =
C CF =
V IN
V OUT
V OUT
I OUT ( MAX )
Target the unity-gain crossover frequency for:
the switching frequency.
C F
( 2 π × 0 . 5 × f SW × R F × C F ) ? 1
f C ≤
f ZERO , RHP
5
Improving Noise Immunity
When using the MAX15036/MAX15037 in noisy environ-
ments, adjust the controller’s compensation to improve
2) Place a zero
( f Z 1 =
1
2 π × R F × C F
)
at 0.75 x f LC .
the system’s noise immunity. In particular, high-fre-
quency noise coupled into the feedback loop causes
duty-cycle jitter. One solution is to lower the crossover
C F =
1
2 π × 0 . 75 × f LC × R F
frequency (see the Compensation section).
PCB Layout Guidelines
Careful PCB layout is critical to achieve low-switching
where R F ≥ 10k Ω .
3) Calculate C A for a target crossover frequency, f C :
power losses and clean stable operation. Use a multi-
layer board whenever possible for better noise immuni-
ty. Follow these guidelines for good PCB layout:
V OSC ? ( 1 ? D ) 2 + ω C 2 LC OUT ?
C A =
? ?
ω C R F V IN
1) Solder the exposed pad to a large copper plane
under the IC. To effectively use this copper area as
a heat exchanger between the PCB and the ambi-
ent, expose this copper area on the top and bottom
20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15037ATE/V+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15037ATE/V+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15037ATE+ | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15037ATE+T | 功能描述:直流/直流开关转换器 2.2MHz 3A Buck wInt High-Side Switch RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX15038ETG+ | 功能描述:直流/直流开关调节器 4A 2MHz Step-Down w/Integrated Switch 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 |
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