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参数资料
| 型号： | MAX15023EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | KIT EVALUATION FOR MAX15023 CTLR |
| 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，非隔离 |
| 输出电压： | 1.2V，3.3V |
| 电流 - 输出： | 10A，5A |
| 输入电压： | 9 ~ 16 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 500kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX15023 |
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MAX15023
Wide 4.5V to 28V Input, Dual-Output
Synchronous Buck Controller
the error amplifier. The duration of the soft-start ramp is
2048 switching cycles and the resolution is 1/64 of the
steady-state regulation voltage. This allows a smooth
increase of the output voltage. A logic-low on each EN_
initiates a soft-stop sequence by stepping down the ref-
erence voltage of the error amplifier. After the soft-stop
sequence is completed, the MOSFET drivers are both
turned off. See Figure 1 for more detail.
Connect EN1 and EN2 to V CC for always-on operation.
Owing to their accurate turn-on and turn–off thresholds,
EN1 and EN2 can be used as a UVLO adjustment input
and for power sequencing together with the PGOOD_
outputs. (See the Setting the Enable Input (EN_) section).
The adaptive action in the soft-start becomes visible if
the cycle-by-cycle, low-side, source peak current limit
is reached during the soft-start ramping sequence. In
this case, the rate-of-rise of the internal reference is
decreased, so that the PWM controller tries to regulate
to the inductor current around its limit value, rather than
the output voltage. The soft-start time can be prolonged
up to 4096 clock cycles (twice the normal soft-start
duration). This implementation allows the soft-start time
to be automatically adapted to the time necessary to
keep the LX current below the limit while charging the
output capacitor.
Since soft-start is invoked by the hiccup-mode short-
circuit protection, also see the Hiccup Mode
Overcurrent Protection section for additional details.
Power-Good Outputs (PGOOD_)
The MAX15023 includes two power-good comparators
to monitor the regulators’ output voltages and detect
the power-good threshold, fixed at 92.5% of the nomi-
nal FB voltage. The PGOOD_ outputs are open-drain
and should be pulled up with an external resistor to the
supply voltage of the logic input they drive. This voltage
should not exceed 28V. They can sink up to 2mA of
current while low.
UVLO
A
B
C
D
E
F
G
H
I
V CC
EN_
V OUT_
DAC_VREF_
DH_
DL_
2048 CLK
CYCLES
2048 CLK
CYCLES
SYMBOL
UVLO
V CC
EN_
V OUT_
DAC_VREF_
DH_
DL_
A
DEFINITION
Undervoltage threshold value is provided in
the Electrical Characteristics table.
Internal 5.2V linear regulator output.
Active-high enable input.
Regulator output voltage.
Regulator internal soft-start and soft-stop signal.
Regulator high-side gate-driver output.
Regulator low-side gate-driver output.
V CC rising while below the UVLO threshold.
EN_ is low.
SYMBOL
B
C
D
E
F
G
H
I
DEFINITION
V CC is higher than the UVLO threshold. EN_ is low.
EN is pulled high. DH_ and DL_ start switching.
Normal operation.
V CC drops below UVLO.
V CC goes above UVLO threshold. DH_ and DL_
start switching. Normal operation.
EN_ is pulled low. V OUT_ enters soft-stop.
EN_ is pulled high. DH_ and DL_ start switching.
Normal operation.
V CC drops below UVLO.
Figure 1. MAX15023 Detailed Power-On/-Off Sequencing
14
Maxim Integrated
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| MAX15023EVKIT+ | 功能描述:电源管理IC开发工具 MAX15023 Eval Kit 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 |
| MAX15024AATB/V+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX15024AATB/V+T | 功能描述:功率驱动器IC Single Low Side RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX15024AATB+ | 制造商:Maxim Integrated Products 功能描述:SINGLE/DUAL, 16NS, HIGH SINK/SOURCE CURRENT GATE DRIVERS - Rail/Tube |
| MAX15024AATB+T | 功能描述:功率驱动器IC Single Low Side RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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