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| 型号： | MAX17528GTJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/41页 |
| 文件大小： | 0K |
| 描述： | IC PWM CTRLR STP-DWN 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 系列： | Quick-PWM™ |
| 应用： | 控制器，Intel IMVP-6.5? GMCH |
| 输入电压： | 4.5 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 0.01 V ~ 1.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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1-Phase Quick-PWM
Intel IMVP-6.5/GMCH Controllers
Pin Description (continued)
PIN
12
13
14 –20
21
22
23
24
25
26
27
NAME
CLKEN
GND
D0 –D6
PGND
DL
V DD
BST
LX
DH
PGDIN
FUNCTION
Dual-Function GMCH/IMVP-6.5 Select Input and Active-Low IMVP-6.5 CPU Clock Enable Open-
Drain Output. Connect to system 3.3V supply through pullup resistors for proper IMVP-6.5
operation. CLKEN voltage has to be higher than 2.3V before SHDN is pulled high. Connect to GND
to select the Intel GMCH feature set. This active-low logic output indicates when the feedback
voltage is in regulation. The MAX17528 forces CLKEN low during dynamic VID transitions and for
an additional 20μs after the VID transition is completed. CLKEN is the inverse of PWRGD, except
for the 5ms PWRGD startup delay period after CLKEN is pulled low. See the startup timing diagram
(Figure 9). The CLKEN upper threshold is blanked during any downward output-voltage transition
that happens when the MAX17528 are in skip mode, and stays blanked until the transition-related
PWRGD blanking period is complete and the output reaches regulation.
Analog Ground
Low-Voltage (1.0V Logic) VID DAC Code Inputs. The D0 –D6 inputs do not have internal pullups.
These 1.0V logic inputs are designed to interface directly with the CPU. The output voltage is set
by the VID code indicated by the logic-level voltages on D0 –D6 (see Table 2).
The 1111111 code corresponds to standby mode. When this code is detected, the MAX17528
enters standby mode while in forced-PWM mode, and slews to 0V at 1/8 the slew rate set by the
TIME resistor. After slewing to 0V, the IC enters skip mode (DH and DL low). If D6 –D0 is changed
from 1111111 to a different code, the MAX17528 exits standby mode (while in skip mode) and
slews the output voltage to the target voltage set by the VID code at 1x the slew rate set by the
TIME resistor. Note that the standby supply current consumed by the MAX17528 is the same as its
quiescent supply current, because no analog blocks are turned off. This is necessary because of
the fast wake-up requirement.
Power Ground. Ground connection for the DL driver. Also used as an input to the MAX17528 ’s zero-
crossing comparator.
Low-Side Gate-Driver Output. DL swings from PGND to V DD . DL is forced low after shutdown. DL is
forced low in skip mode after detecting an inductor current zero-crossing.
Supply Voltage Input for the DL Driver. V DD is also the supply voltage used to internally recharge
the BST flying capacitor during the time DL is high. Connect V DD to the 4.5V to 5.5V system supply
voltage. Bypass V DD to PGND with a 1μF or greater ceramic capacitor.
Boost Flying Capacitor Connection. BST provides the upper supply rail for the DH high-side gate
driver. An internal switch between V DD and BST charges the flying capacitor while the low-side
MOSFET is on (DL pulled high and LX pulled to ground).
Inductor Connection. LX is the internal lower supply rail for the DH high-side gate driver. Also used
as an input to the MAX17528 ’s zero-crossing comparator.
High-Side Gate-Driver Output. DH swings from LX to BST. The controller pulls DH low in shutdown.
IMVP-6.5 Power-Good Logic Input. PGDIN indicates the power status of other system rails used to
power the chipset and CPU V CCP supplies. For the IMVP-6.5 ( CLKEN pullup to 3.3V with 1.9k ), the
MAX17528 powers up and remains at the boot voltage (V BOOT ) as long as PGDIN remains low.
When PGDIN is forced high, the MAX17528 transitions the output to the voltage set by the VID
code, and CLKEN is allowed to go low.
If PGDIN is pulled low at any time, the MAX17528 immediately forces CLKEN high and PWRGD low
and sets the output to the boot voltage. The output remains at the boot voltage until the system
either disables the controller or until PGDIN goes high again.
For GMCH 2009 applications ( CLKEN = GND), connect PGDIN to the 5V bias supply.
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17528GTJ+ | 功能描述:电流型 PWM 控制器 1-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX17528GTJ+T | 功能描述:电流型 PWM 控制器 1-Phase Quick-PWM Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX17535ETG+ | 功能描述:电池管理 High Frequency SMBus Charger 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 |
| MAX17535ETG+T | 功能描述:电池管理 High Frequency SMBus Charger 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 |
| MAX17535EVKIT+ | 功能描述:电池管理 EVKIT 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 |
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