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参数资料
| 型号： | MAX5974AEVKIT# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/27页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT MAX5974A |
| 标准包装： | 1 |
| 系列： | * |
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MAX5974A/MAX5974B/MAX5974C/MAX5974D
Active-Clamped, Spread-Spectrum,
Current-Mode PWM Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V (for MAX5974A/MAX5974C, bring V IN up to 17V for startup), V CS = V CSSC = V DITHER/SYNC = V FB = V FFB = V DCLMP =
V GND , V EN = +2V, NDRV = AUXDRV = SS = COMP = unconnected, R RT = 34.8k I , R DT = 25k I , C IN = 1 F F, T A = -40 N C to +85 N C,
unless otherwise noted. Typical values are at T A = +25 N C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AUXDRV DRIVER
Pulldown Impedance
Pullup Impedance
R AUX-N
R AUX-P
I AUXDRV (sinking) = 50mA
I AUXDRV (sourcing) = 25mA
4.3
10.6
7.7
18.9
I
I
Peak Sink Current
Peak Source Current
0.5
0.3
A
A
Fall Time
Rise Time
t AUX-F
t AUX-R
C AUXDRV = 1nF
C AUXDRV = 1nF
24
45
ns
ns
DEAD-TIME PROGRAMMING (DT)
DT Bias Voltage
V DT
1.215
V
NDRV to AUXDRV Delay
(Dead Time)
t DT
From NDRV falling
to AUXDRV falling
From AUXDRV rising
to NDRV rising
R DT = 10k I
R DT = 100k I
R DT = 10k I
R DT = 100k I
300
310
40
350
40
360
410
420
ns
ns
CURRENT-LIMIT COMPARATOR (CS)
Cycle-by-Cycle Peak
Current-Limit Threshold
V CS-PEAK
375
393
410
mV
Cycle-by-Cycle Reverse
Current-Limit Threshold
Current-Sense Blanking Time
for Reverse Current Limit
V CS-REV
t CS-BLANK-
REV
Turns AUXDRV off for the remaining
cycle if reverse current limit is exceeded
From AUXDRV falling edge
-118
-100
115
-88
mV
ns
Number of Consecutive Peak
Current-Limit Events to Hiccup
N HICCUP
8
Events
Current-Sense Leading-Edge
Blanking Time
Propagation Delay from
Comparator Input to NDRV
t CS-BLANK
t PDCS
From NDRV rising edge
From CS rising (10mV overdrive) to
NDRV falling (excluding leading-edge
blanking)
115
35
ns
ns
Minimum On-Time
t ON-MIN
100
150
200
ns
SLOPE COMPENSATION (CSSC)
Slope Compensation Current
Ramp Height
Current ramp’s peak added to CSSC
input per switching cycle
47
52
58
F A
PWM COMPARATOR
Comparator Offset Voltage
Current-Sense Gain
Current-Sense Leading-Edge
Blanking Time
Comparator Propagation Delay
V PWM-OS
A CS-PWM
t CSSC-BLANK
t PWM
V COMP - V CSSC
D V COMP / D V CSSC (Note 4 )
From NDRV rising edge
Change in V CSSC = 10mV (including
internal leading-edge blanking)
1.35
3.1
1.7
3.33
115
150
2
3.6
V
V/V
ns
ns
4
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5974AEVKIT# | 功能描述:电源管理IC开发工具 MAX5974A 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 |
| MAX5974BETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5974BETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5974CETE+ | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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 |
| MAX5974CETE+T | 功能描述:电流型 PWM 控制器 Current-Mode PWM 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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