参数资料
型号: MAX34441ETL+T
厂商: Maxim Integrated Products
文件页数: 31/53页
文件大小: 0K
描述: IC PS MANAGER PMBUS 5CH 40TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 3,000
应用: 基站网络线路卡,服务器
电源电压: 2.7 V ~ 5.5 V
电流 - 电源: 2.5mA
工作温度: -40°C ~ 85°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: 带卷 (TR)
其它名称: 90-34441+TTR
PMBus 5-Channel Power-Supply Manager
and Intelligent Fan Controller
FAN_CONFIG_1_2 (3Ah)
The FAN_CONFIG_1_2 command is used in conjunction with MFR_FAN_CONFIG to configure the fan. See the
MFR_FAN_CONFIG (F1h) section for more details on this command. The FAN_CONFIG_1_2 command is described
in Table 15.
Table_15._FAN_CONFIG_1_2_Command_Byte
BIT_
7
6
NAME
FAN ENABLE
RPM/PWM
MEANING
0 = Fan disabled (PWM5 forced low).
1 = Fan enabled.
0 = PWM duty cycle is the fan-controlling
parameter.
1 = RPM is the fan-controlling parameter.
00
=
1
Tach
pulse per fan revolution.
5:4
PULSE
01
10
11
=
=
=
2
3
4
Tach
Tach
Tach
pulses per fan revolution.
pulses per fan revolution.
pulses per fan revolution.
3:0
0
These bits always return a 0.
FAN_COMMAND_1 (3Bh)
The FAN_COMMAND_1 command is used to override the device’s automatic fan-control function and force the fan
to either a fixed PWM duty-cycle value or a target fan speed (in RPM). The units of the FAN_COMMAND_1 are either
percent duty cycle (if bit 6 of FAN_CONFIG_1_2 is zero) or RPM (if bit 6 of FAN_CONFIG_1_2 is one). Any value less
than 0% duty cycle or 0 RPM causes the device to ignore this command and use the automatic fan-control function.
Any value greater than or equal to 0% duty cycle or 0 RPM causes the device to ignore the automatic fan-control func-
tion and force the fan to the PWM value or RPM value provided by the FAN_COMMAND_1 command. The 2 data bytes
are in DIRECT format.
Table_16._PWM_Fan_Mode_(FAN_CONFIG_1_2_Bit_6_=_0)
FAN_COMMAND_1_VALUE
8000h to FFFFh
0000h to 2710Fh
2711h to 7FFFh
DEVICE_RESPONSE
Ignore FAN_COMMAND_1 and use automatic fan-control function
0 to 100% fan PWM duty cycle
100% fan PWM duty cycle
Table_17._RPM_Fan_Mode_(FAN_CONFIG_1_2_Bit_6_=_1)
FAN_COMMAND_1_VALUE
8000h to FFFFh
0000h to 7FFFh
DEVICE_RESPONSE
Ignore FAN_COMMAND_1 and use automatic fan-control function
0 to 32,767 RPM
31
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