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| 型号： | MAX17409GTI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/32页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR NVIDIA CPU 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Quick-PWM™ |
| 应用： | 处理器 |
| 电流 - 电源： | 1.5mA |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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1-Phase Quick-PWM GPU Controller
INPUT (V IN )
DH
N H
C IN
SENSE RESISTOR
C EQ R1 = SENSE
LX
L
L ESL
R SENSE
L
R SENSE
MAX17409 DL
N L
D L
R1
C EQ
C OUT
PGND
CSP
CSN
A) OUTPUT SERIES RESISTOR SENSING
INPUT (V IN )
DH
N H
C IN
INDUCTOR
LX
L
R DCR
R CS =
R2
R1 + R2
R DCR
MAX17409 DL
PGND
N L
D L
R 1
R 2
C EQ
C OUT
L
R DCR = C EQ
[ R1 R2 1 + 1 ]
CSP
CSN
B) LOSSLESS INDUCTOR SENSING
Figure 3. Current-Sense Methods
Feedback Adjustment Amplifiers
Voltage-Positioning Amplifier
(Steady-State DC Droop)
The MAX17409 includes a transconductance amplifier
for adding gain to the voltage-positioning sense path.
The amplifier’s input is generated by the differential cur-
rent-sense inputs, which sense the inductor current by
measuring the voltage across either current-sense
resistors or the inductor’s DCR. The amplifier’s output
connects directly to the regulator’s voltage-positioned
feedback input (FB), so the resistance between FB and
the output-voltage sense point determines the voltage-
positioning gain:
V OUT = V TARGET - R FB I FB
where the target voltage (V TARGET ) is defined in the
Nominal Output-Voltage Selection section, and the FB
amplifier’s output current (I FB ) is determined by the cur-
rent-sense voltages:
I FB = G m(FB) x (V CSP - V CSN )
FOR THERMAL COMPENSATION:
R2 SHOULD CONSIST OF AN NTC RESISTOR IN
SERIES WITH A STANDARD THIN-FILM RESISTOR.
where V CSP - V CSN is the differential current-sense volt-
age, and G m(FB) is typically 600μS, as defined in the
Electrical Characteristics table.
Differential Remote Sense
The MAX17409 includes differential, remote-sense
inputs to eliminate the effects of voltage drops along the
PCB traces and through the processor’s power pins.
The feedback-sense node connects to the voltage-posi-
tioning resistor (R FB ). The ground-sense (GNDS) input
connects to an amplifier that adds an offset directly to
the target voltage, effectively adjusting the output volt-
age to counteract the voltage drop in the ground path.
Connect the voltage-positioning resistor (R FB ) and
ground-sense (GNDS) input directly to the processor’s
remote-sense outputs as shown in Figure 1.
Integrator Amplifier
An integrator amplifier forces the DC average of the FB
voltage to equal the target voltage. This transconduc-
tance amplifier integrates the feedback voltage and
provides a fine adjustment to the regulation voltage
18
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1740EUB | 功能描述:转换 - 电压电平 Integrated Circuits (ICs) RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| MAX1740EUB+ | 功能描述:转换 - 电压电平 SIM/Smart Card Level Translator RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| MAX1740EUB+T | 功能描述:转换 - 电压电平 SIM/Smart Card Level Translator RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| MAX1740EUB-T | 功能描述:转换 - 电压电平 RoHS:否 制造商:Micrel 类型:CML/LVDS/LVPECL to LVCMOS/LVTTL 传播延迟时间:1.9 ns 电源电流:14 mA 电源电压-最大:3.6 V 电源电压-最小:3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MLF-8 |
| 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 |
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