- 您现在的位置：买卖IC网 > PDF目录17275 > MAX15023EVKIT+ (Maxim Integrated Products)KIT EVALUATION FOR MAX15023 CTLR PDF资料下载
参数资料
| 型号： | MAX15023EVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 20/28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 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页
MAX15023
Wide 4.5V to 28V Input, Dual-Output
Synchronous Buck Controller
It is recommended to have a phase margin around
+50° to +60° to maintain a robust loop stability and
well-behaved transient response.
If an electrolytic or large-ESR tantalum output capacitor
is used, the capacitor ESR zero f ZO typically occurs
The total loop gain as the product of the modulator gain
and the error amplifier gain at f O should equal 1. So:
Gain MOD × Gain EA = 1
Therefore:
×
between the LC poles and the crossover frequency f O
(f PO < f ZO < f O ). In this case, use a Type II (PI or pro-
portional-integral) compensation network.
V IN ESR
V OSC ( 2 π × f O × L OUT )
×
V FB
V OUT
× g m × R F = 1
If a ceramic or low-ESR tantalum output capacitor is
used, the capacitor ESR zero typically occurs above
the desired crossover frequency f O , that is f PO < f O <
f ZO . In this situation, choose a Type III (PID or propor-
tional-integral-derivative) compensation network.
Solving for R F :
R F =
V OSC × ( 2 π × f O × L OUT ) × V OUT
V FB × V IN × g m × ESR
Type II Compensation Network
(See Figure 4)
2) Set a midband zero (f Z1 ) at 0.75 x f PO (to cancel
one of the LC poles):
If f ZO is lower than f O and close to f PO , the phase lead
of the capacitor ESR zero almost cancels the phase
loss of one of the complex poles of the LC filter around
the crossover frequency. Therefore, a Type II compen-
sation network with a midband zero and a high-fre-
f Z 1 =
Solving for C F :
1
2 π × R F × C F
= 0 . 75 × f PO
quency pole can be used to stabilize the loop. In Figure
4, R F and C F introduce a midband zero (f Z1 ). R F and
C CF in the Type II compensation network also provide a
high-frequency pole (f P1 ), which mitigates the effects of
C F =
1
2 π × R F × f PO × 0 . 75
the output high-frequency ripple.
To calculate the component values for Type II compen-
sation network in Figure 4, follow the instruction below:
3) Place a high-frequency pole at f P1 = 0.5 x f SW (to
attenuate the ripple at the switching frequency, f SW )
and calculate C CF using the following equation:
1) Calculate the gain of the modulator (Gain MOD )—
composed of the regulator’s pulse-width modulator,
LC filter, feedback divider, and associated circuitry
at crossover frequency:
C CF =
1
π × R F × f SW ?
1
C F
×
Gain MOD =
V IN ESR
V OSC ( 2 π × f O × L OUT )
×
V FB
V OUT
V OUT
R 1
where V IN is the regulator’s input voltage, V OSC is the
amplitude of the ramp in the pulse-width modulator,
V FB is the FB_ input voltage set-point (0.6V typically,
see Electrical Characteristics table), and V OUT is the
desired output voltage.
The gain of the error amplifier (Gain EA ) in midband fre-
quencies is:
R 2
V REF
g m
R F
C F
COMP
C CF
Gain EA = g m × R F
where g m is the transconductance of the error amplifier.
Figure 4. Type II Compensation Network
20
Maxim Integrated
相关PDF资料 |
PDF描述 |
|---|---|
| 591D336X96R3B2T15H | CAP TANT 33UF 6.3V 10% 1611 |
| 591D476X9004B2T15H | CAP TANT 47UF 4V 10% 1611 |
| 21020-0101 | CABLE FLAT FLEX 4" .50MM 10 POS |
| ECC20DCSD | CONN EDGECARD 40POS DIP .100 SLD |
| MAX8655EVKIT+ | KIT EVAL FOR MAX8655 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
发布紧急采购，3分钟左右您将得到回复。