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| 型号： | MAX1544ETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/42页 |
| 文件大小： | 0K |
| 描述： | IC QUICK-PWM DUAL-PHASE 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | Quick-PWM™ |
| 应用： | 控制器，AMD Hammer |
| 输入电压： | 2 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 0.68 V ~ 1.55 V |
| 工作温度： | -40°C ~ 100°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（6x6） |
| 包装： | 管件 |
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Dual-Phase, Quick-PWM Controller for
AMD Hammer CPU Core Power Supplies
Pin Description (continued)
PIN
14
15
16
17
18
19
20 – 24
25
26
27
28
29
30
31
NAME
CCI
FB
OAIN-
OAIN+
SKIP
OVP
D4 – D0
VROK
BSTM
LXM
DHM
DLM
V DD
PGND
FUNCTION
Current Balance Compensation. Connect a 470pF capacitor between CCI and FB. See the Current
Balance Compensation section.
Feedback Input. FB is internally connected to both the feedback input and the output of the voltage-
positioning op amp. See the Setting Voltage Positioning section to set the voltage-positioning gain.
Op Amp Inverting Input and Op Amp Disable Input. When using the internal op amp for additional
voltage-positioning gain, connect to the negative terminal of current-sense resistor through a resistor
as described in the Setting Voltage Positioning section. Connect OAIN- to V CC to disable the op amp.
The logic threshold to disable the op amp is approximately V CC - 1V.
Op Amp Noninverting Input. When using the internal op amp for additional voltage-positioning gain,
connect to the positive terminal of current-sense resistor through a resistor as described in the Setting
Voltage Positioning section.
Pulse-Skipping Select Input. When pulse skipping, the controller blanks the VROK upper threshold:
3.3V or V CC (high) = Dual-phase forced-PWM operation
REF = Dual-phase pulse-skipping operation
GND = Single-phase pulse-skipping operation
Overvoltage Protection Enable Input. Connect OVP to V CC to enable the output overvoltage fault
protection. Connect OVP to GND to disable the output overvoltage fault protection. During normal
forced-PWM operation ( SKIP = high), the controller detects an OVP fault if the output voltage exceeds
the set DAC voltage by more than 13% (min). During pulse-skipping operation ( SKIP = REF or GND),
the controller detects an OVP fault if the output voltage exceeds the fixed 2V (typ) threshold. If an
overvoltage fault occurs, the controller is immediately shutdown and the output is discharged. See
the Fault Protection section.
Low-Voltage VID DAC Code Inputs. The D0 – D4 inputs do not have internal pullups. These 1.0V logic
inputs are designed to interface directly with the CPU. In normal mode (Table 4, SUS = GND), the
output voltage is set by the VID code indicated by the logic-level voltages on D0-D4. In suspend
mode (Table 5, SUS = REF or high), the decoded state of the four-level S0 – S1 inputs sets the output
voltage.
Open-Drain Power-Good Output. After output voltage transitions, except during power-up and power-
down, if OUT is in regulation then VROK is high impedance. The controller blanks VROK whenever
the slew rate control is active (output voltage transitions). VROK is forced low in shutdown. A pullup
resistor on VROK causes additional finite shutdown current. During power-up, VROK includes a 3ms
(min) delay after the output reaches the regulation voltage.
Main Boost Flying Capacitor Connection. An optional resistor in series with BSTM allows the DHM
pullup current to be adjusted.
Main Inductor Connection. LXM is the internal lower supply rail for the DHM high-side gate driver.
Main High-Side Gate-Driver Output. Swings LXM to BSTM.
Main Low-Side Gate-Driver Output. DLM swings from PGND to V DD . DLM is forced high after the
MAX1544 powers down.
Supply Voltage Input for the DLM and DLS Gate Drivers. Connect to the system supply voltage (4.5V
to 5.5V). Bypass V DD to PGND with a 2.2μF or greater ceramic capacitor as close to the IC as
possible.
Power Ground. Ground connection for low-side gate drivers DLM and DLS.
______________________________________________________________________________________
15
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1544ETL+ | 功能描述:电压模式 PWM 控制器 Dual-Phase Quick-PWM 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 |
| MAX1544ETL+T | 功能描述:电压模式 PWM 控制器 Dual-Phase Quick-PWM 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 |
| MAX1544ETL+TG075 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1544ETL-T | 功能描述:电压模式 PWM 控制器 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 |
| MAX1544EVKIT | 制造商:Maxim Integrated Products 功能描述:DUAL-PHASE, QUICK-PWM CONTROLLER FOR AMD HAMM - Bulk |
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