参数资料
型号: MAX17007GTI+T
厂商: Maxim Integrated Products
文件页数: 15/35页
文件大小: 0K
描述: IC CTRLR QPWM GRAPHICS 28TQFN
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: 电源
电流 - 电源: 1.7mA
电源电压: 4.5 V ~ 26 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)
Dual and Combinable QPWM Graphics
Core Controllers for Notebook Computers
Table 1. Component Selection for Standard Applications
V OUT1 = 1.0V/1.2V AT 12A
V OUT = 1.5V AT 12A
COMPONENT
V IN = 7V to 20V
TON1 = 220k
(FIGURE 1)
(270kHz)
V IN = 7V to 20V
TON2 = 180k
(FIGURE 1)
(330kHz)
Input Capacitor
(per Phase)
Output Capacitor
Inductor
Schottky Diode
High-Side MOSFET
(2x) 10μF, 25V
Taiyo Yuden TMK432BJ106KM
(2x) 330μF, 2.5V, 12m , C case
SANYO 2R5TPE330MCC2
1μH, 3.25m , 16A
Wurth Electronics 7443552100
2A, 30V Schottky diode (SMA)
Nihon EC21QS03L
Central Semiconductor
CMSH2-40M
Fairchild Semiconductor
(1x) FDS8690
(2x) 10μF, 25V
Taiyo Yuden TMK432BJ106KM
(2x) 330μF, 2.5V, 12m , C case
SANYO 2R5TPE330MCC2
1μH, 3.25m , 16A
Wurth Electronics 7443552100
2A, 30V Schottky diode (SMA)
Nihon EC21QS03L
Central Semiconductor
CMSH2-40M
Fairchild Semiconductor
(1x) FDS8690
8.6m /11.4m
(typ/max)
8.6m /11.4m
(typ/max)
Fairchild Semiconductor
Fairchild Semiconductor
Low-Side MOSFET
(1x) FDS8670
(1x) FDS8670
4.2m /5m
(typ/max)
4.2m /5m
(typ/max)
Table 2. Component Suppliers
MANUFACTURER
AVX Corp.
BI Technologies
Central Semiconductor Corp.
Fairchild Semiconductor
International Rectifier
KEMET Corp.
NEC Tokin Corp.
Panasonic Corp.
WEBSITE
www.avxcorp.com
www.bitechnologies.com
www.centralsemi.com
www.fairchildsemi.com
www.irf.com
www.kemet.com
www.nec-tokin.com
www.panasonic.com
MANUFACTURER
Pulse Engineering
Renesas Technology Corp.
SANYO Electric Co., Ltd.
Sumida Corp.
Taiyo Yuden
TDK Corp.
TOKO America, Inc.
Vishay/Siliconix
WEBSITE
www.pulseeng.com
www.renesas.com
www.sanyodevice.com
www.sumida.com
www.t-yuden.com
www.component.tdk.com
www.tokoam.com
www.vishay.com
Detailed Description
The MAX17007/MAX17008 standard application circuit
(Figure 1) generates the 1V to 1.2V/12A and 1.5V/12A
chipset voltages in a notebook computer. The input sup-
ply range is 7V to 20V for the specific application. Table 1
lists component selections, while Table 2 lists the com-
ponent manufacturers. Figure 2 shows the combined-
mode standard application circuit and Figure 3 is the
MAX17007/MAX17008 functional diagram.
The MAX17007/MAX17008 contain two constant on-
time step-down controllers designed for low-voltage
power supplies. The two SMPSs can also be combined
to operate as a two-phase high-current single-output
regulator. Constant on-time Quick-PWM operation pro-
vides fast response to load transients and handles wide
I/O voltage ratios with ease, while maintaining a rela-
tively constant switching frequency. The switching fre-
quency can be adjusted between 200kHz and 600kHz
with external resistors. Differential output current sens-
ing allows output sense-resistor sensing for an accu-
rate current-limit, lossless inductor DCR current
sensing for lower power dissipation while maintaining
0.7% output accuracy. Overvoltage (MAX17007) and
undervoltage protection and accurate user-selectable
current limits (four different levels) ensure robust opera-
tions.
The MAX17007/MAX17008 feature a special combined-
mode configuration that allows higher current outputs
to be supported. A current-balance integrator maintains
equal currents in the two phases, improving efficiency
and power distribution.
______________________________________________________________________________________
15
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