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参数资料
| 型号： | MAX17080GTL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 32/48页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER AMD SVI 40-TQFN |
| 标准包装： | 2,500 |
| 应用： | 控制器，AMD SVI |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 3 |
| 输出电压： | 0.013 V ~ 1.55 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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AMD 2-/3-Output Mobile Serial
VID Controller
1
2
3
4
5
6
DC_IN
V DDIO
SVC/SVD
2-BIT BOOT VID
SERIAL MODE
BUS IDLE
SHDN
GNDS1 OR GNDS2
(VDD_PLANE_STRAP)
SMPS V OUT
7
PWRGD
20 μ s
10 μ s
BLANK
HIGH-Z
20 μ s
PGD_IN
RESET_L
8
Figure 7. Startup Sequence
NB SMPS Current Sense
The NB current sense is achieved by sensing the volt-
age across the high-side internal MOSFET during the
on-time. The current information is computed by dividing
the sensed voltage by the MOSFET’s on-resistance,
R ON(NH3) .
Combined-Mode Current Balance
When the core SMPSs are configured in combined
mode (GNDS1 or GNDS2 pulled to V DDIO ), the
MAX17080 current-mode architecture automatically
forces the individual phases to remain current bal-
anced. SMPS1 is the main voltage-control loop, and
SMPS2 maintains the current balance between the
See the Core Peak Inductor Current Limit (ILIM12) sec-
tion in the Core SMPS Design Procedure section.
Power-Up Sequence (POR, UVLO, PGD_IN)
Power-on reset (POR) occurs when V CC rises above
approximately 3V, resetting the fault latch and prepar-
ing the controller for operation. The V CC undervoltage-
lockout (UVLO) circuitry inhibits switching until V CC
rises above 4.25V (typ). The controller powers up the
reference once the system enables the controller V CC
above 4.25V and SHDN is driven high. With the refer-
ence in regulation, the controller ramps the SMPS and
NB voltages to the boot voltage set by the SVC and
SVD inputs:
phases. This control scheme regulates the peak induc-
tor current of each phase, forcing them to remain prop-
erly balanced. Therefore, the average inductor current
t START =
V BOOT
( 1 mV /μ s )
variation depends mainly on the variation in the current-
sense element and inductance value.
Peak Current Limit
The MAX17080 current-limit circuit employs a fast peak
inductor current-sensing algorithm. Once the current-
sense signal of the SMPS exceeds the peak current-limit
threshold, the PWM controller terminates the on-time.
The soft-start circuitry does not use a variable current
limit, so full output current is available immediately.
PWRGD becomes high impedance approximately 20μs
after the SMPS outputs reach regulation. The boot VID
is stored the first time PWRGD goes high. The
MAX17080 is in pulse-skipping mode during soft-start.
Figure 7 shows the MAX17080 startup sequence.
32
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17081EVKIT+ | 功能描述:电源管理IC开发工具 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 |
| MAX17081EWV+ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17081EWV+T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17082GTL+ | 功能描述:电压模式 PWM 控制器 Dual-Phase Quick-PWM CPU Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17082GTL+T | 功能描述:电压模式 PWM 控制器 Dual-Phase Quick-PWM CPU Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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