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| 型号： | MAX17409GTI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/32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
C CCV >>
(Figure 2), allowing accurate DC output-voltage regula-
tion regardless of the output ripple voltage. The integra-
tor amplifier has the ability to shift the output voltage by
± 80mV (typ). The differential input voltage range is at
least ±60mV total, including DC offset and AC ripple.
The integration time constant can be set easily with an
external compensation capacitor between CCV and
analog ground, with the minimum recommended CCV
capacitor value determined by:
G m ( CCV )
16 π × f SW
where G m(CCV) is the integrator’s maximum transcon-
ductance (320μs) and f SW is the switching frequency
set by the TON resistance.
The MAX17409 disables the integrator by connecting
the amplifier inputs together at the beginning of all VID
transitions done in pulse-skipping mode (SKIP = high).
The integrator remains disabled until 20μs after the
transition is completed (the internal target settles) and
the output is in regulation (edge detected on the error
comparator).
Nominal Output-Voltage Selection
The nominal no-load output voltage (V TARGET ) is
defined by the selected voltage reference (VID DAC)
plus the remote ground-sense adjustment (V GNDS ) as
defined in the following equation:
V TARGET = V FB = V DAC + V GNDS
where V DAC is the selected VID voltage. On startup, the
MAX17409 slews the target voltage from ground to the
selected VID voltage.
DAC Inputs (G0–G5)
The digital-to-analog converter (DAC) programs the
output voltage using the G0–G5 inputs. G0–G5 are low-
voltage (1.0V) logic inputs, designed to interface direct-
ly with the CPU. Do not leave G0–G5 unconnected.
Changing G0–G5 initiates a transition to a new output-
voltage level. Change G0 –G5 together, avoiding
greater than 20ns skew between bits. Otherwise, incor-
rect DAC readings could cause a partial transition to
the wrong voltage level followed by the intended transi-
tion to the correct voltage level, lengthening the overall
transition time (Table 4).
Table 3. MAX17409 Operating Mode Truth Table
SHDN
GND
Rising
High
SKIP
X
X
Low
OPERATING MODE
DISABLED
Pulse-Skipping
1.56mV/μs Slew Rate
Forced-PWM
12.5mV/μs Slew Rate
DESCRIPTION
Low-Power Shutdown Mode. DL forced low, and the controller is
disabled. The supply current drops to 10μA (max).
Startup. When SHDN is pulled high, the MAX17409 begins the startup
sequence. The controller enables the PWM controller and ramps the
output voltage up to the selected VID voltage.
Full Power. The no-load output voltage is determined by the selected
VID DAC code (G0–G5, Table 4).
Suspend Mode. The no-load output voltage is determined by the
High
High
Pulse-Skipping
12.5mV/μs Slew Rate
selected VID DAC code (G0–G5, Table 4). When SKIP is pulled high,
the MAX17409 immediately enters pulse-skipping operation, allowing
automatic PWM/PFM switchover under light loads. The PWRGD upper
threshold is blanked during the transition.
Shutdown. When SHDN is pulled low, the MAX17409 immediately
Falling
X
Forced-PWM
1.56mV/μs Slew Rate
pulls PWRGD low, and the output voltage is ramped down to ground.
Once the output reaches 0V, the controller enters the low-power
shutdown state.
Fault Mode. The fault latch has been set by the MAX17409 UVP or
High
X
DISABLED
thermal-shutdown protection, or by the OVP protection. The controller
remains in fault mode until V CC power is cycled or SHDN toggled.
______________________________________________________________________________________
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相关代理商/技术参数 |
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| 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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