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参数资料
| 型号： | MAX17410EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL FOR MAX17410 CTLR |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 系列： | Quick-PWM™ |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 0 ~ 1.5 V |
| 电流 - 输出： | 38A |
| 输入电压： | 7 ~ 24V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX17410 |
MAX17410 Evaluation Kit
Reduced Power-Dissipation
Voltage Positioning
Table 3. Shutdown Mode (SHDN)
The MAX17410 includes a transconductance amplifier
SW2 (1, 10)
SHDN PIN
MAX17410 OUTPUT
for adding gain to the voltage-positioning sense path.
The amplifier’s input is generated by summing the cur-
rent-sense inputs, which differentially sense the voltage
across the inductor ’s DCR. The transconductance
amplifier’s output connects to the voltage-positioned
feedback input (FB), so the resistance between FB and
VPS (R4) determines the voltage-positioning gain.
Off
On
Connected
to VDD
Connected
to GND
Output enabled—V OUT is
selected by VID DAC code
(D0–D6) settings
Shutdown mode, V OUT = 0V
Resistor R4 (4.75k ? ) provides a -2.1mV/A voltage-posi-
tioning slope at the output when all phases are active.
Remote output and ground sensing eliminate any addi-
tional PCB voltage drops.
Dynamic Output-Voltage
Transition Experiment
This MAX17410 EV kit is set to transition the output volt-
age at 12.5mV/μs. The speed of the transition is altered
by scaling resistors R2 and R3.
During the voltage transition, watch the inductor current
by looking at the current-sense inputs with a differential
scope probe. Observe the low, well-controlled inductor
current that accompanies the voltage transition. Slew-rate
control during shutdown and startup results in well-con-
trolled currents in to and out of the battery (input source).
There are two methods to create an output-voltage tran-
sition. Select D0 –D6 (SW1). Then either manually
change the SW1 settings to a new VID code setting
(Table 2), or disable all SW1 settings and drive the
VID0–VID6 PCB test points externally to the desired
DPRSLPVR SW2 (2, 9), PSI SW2 (3, 8)
DPRSLPVR and PSI together determine the operating
mode, as shown in Table 4. The MAX17410 will be
forced into full-phase PWM mode during startup, while
in boot mode, during the transition from boot mode to
VID mode, and during shutdown.
DPRSTP SW2 (5,6)
The DPRSTP logic signal is usually the logical comple-
ment of the DPRSLPVR signal. However, there is a spe-
cial condition when both DPRSTP and DPRSLPVR
could temporarily be simultaneously high. If this hap-
pens, the slew rate reduces to 1/4 of the normal (R TIME -
based) slew rate for the duration of this condition. The
slew rate returns to normal when this condition is exit-
ed. Note: Only DPRSLPVR and PSI ( not DPRSTP )
determine the mode of operation (PWM vs. skip and the
number of active phases). See Table 5.
Table 4. DPRSLPVR, PSI
code settings.
Switch SW2 Settings
Shutdown SW2 (1, 10)
When SHDN goes low (SW2 (1, 10) = on), the
MAX17410 enters the low-power shutdown mode.
PWRGD is pulled low immediately, and the output volt-
age ramps down at 1/8 the slew rate set by R2 and R3
(71.9k ? ). When the controller reaches the 0V target, the
drivers are disabled (DL1 and DL2 driven high), the ref-
erence is turned off, and the IC supply currents drop to
1μA (max).
When a fault condition activates the shutdown
DPRSLPVR
SW2 (2, 9)
On (VDD)
On (VDD)
Off (GND)
Off (GND)
PSI
SW2 (3, 8)
On (GND)
Off (VDD)
On (GND)
Off (VDD)
POWER
LEVEL
Very low
current
Low current
(3A)
Intermediate
Maximum
OPERATING
MODE
1-phase pulse-
skipping mode
1-phase pulse-
skipping mode
1-phase forced-
PWM mode
Normal
operation—all
phases are active,
sequence (output undervoltage lockout or thermal shut-
down), the protection circuitry sets the fault latch to pre-
vent the controller from restarting. To clear the fault
latch and reactivate the MAX17410, toggle SHDN or
cycle VDD power. Table 3 shows the shutdown mode
(SHDN).
forced-PWM mode
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17410EVKIT+ | 功能描述:电源管理IC开发工具 MAX17410 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 |
| MAX17410GTM+ | 功能描述:电流型 PWM 控制器 NDA IC 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 |
| MAX17410GTM+T | 功能描述:电流型 PWM 控制器 NDA IC 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 |
| MAX17411GTM+ | 功能描述:电流型 PWM 控制器 IMVP7 CPU & Graphics Controller 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 |
| MAX17411GTM+T | 功能描述:电流型 PWM 控制器 IMVP7 CPU & Graphics Controller 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 |
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