ADM1276
目录
特点................................................. ............................................. 1
应用................................................. ...................................... 1
功能框图............................................... ............... 1
概述................................................ ......................... 1
修订历史................................................ ............................... 3
规格................................................. .................................... 4
串行总线时序特性.............................................. 7
绝对最大额定值............................................... ............. 8
热特性................................................ .............. 8
ESD注意事项................................................ .................................. 8
引脚配置和功能说明............................. 9
典型性能特征........................................... 11
典型应用电路............................................... ............ 17
工作原理............................................... ....................... 18
供电ADM1276 ............................................... ............. 18
电流检测输入............................................... ................... 18
限流参考.............................................. ............. 19
设置电流限制（ ISET ） ........................................... .. 19
软启动................................................ ...................................... 20
折返................................................. ...................................... 20
定时器................................................. ........................................... 21
热插拔重试占空比............................................. ......... 21
FET栅极驱动线夹.............................................. ............... 21
快速反应严重过流...................................... 22
欠压和过压............................................... .. 22
使能输入................................................ ............................ 22
电源良好................................................ ................................. 22
VOUT测量................................................ ................. 23
FET健康................................................ .................................. 23
电源监视器................................................ ............................ 23
PMBus接口................................................ ............................. 24
器件寻址................................................ ...................... 24
SMBus协议使用............................................... ................ 24
分组差错校验............................................... ................ 24
SMBus的消息格式............................................... ............ 25
组命令................................................ ...................... 26
热插拔控制命令.............................................. ... 27
ADM1276信息命令........................................ 27
状态命令................................................ ....................... 27
GPO和ALERT引脚设置命令..................................... 28
电力监控命令............................................... ....... 28
警告限制设置命令............................................ 29
PMBus的直接格式转换.......................................... 30
电压和电流转换采用LSB值.............. 32
GPO2 /警报2引脚行为............................................. .......... 33
故障和警告............................................... ................... 33
生成警报............................................... .................... 33
搬运/清除警报............................................. ......... 33
SMBus报警响应地址.............................................. 33
例如使用SMBus报警响应地址................... 34
的PMBus命令参考............................................... ......... 35
操作................................................. ............................. 36
CLEAR_FAULTS ................................................. ....................... 36
能力的................................................. ............................. 36
VOUT_OV_WARN_LIMIT ................................................. .... 36
VOUT_UV_WARN_LIMIT ................................................. .... 36
IOUT_OC_WARN_LIMIT ................................................. ..... 36
IOUT_WARN2_LIMIT ................................................. ............ 36
VIN_OV_WARN_LIMIT ................................................. ........ 37
VIN_UV_WARN_LIMIT ................................................. ........ 37
PIN_OP_WARN_LIMIT ................................................. ......... 37
STATUS_BYTE ................................................. ......................... 37
STATUS_WORD ................................................. ....................... 38
STATUS_VOUT ................................................. ........................ 38
STATUS_IOUT ................................................. ......................... 38
STATUS_INPUT ................................................. ....................... 39
STATUS_MFR_SPECIFIC ................................................. ....... 39
READ_EIN ................................................. ................................. 40
READ_VIN ................................................. ................................ 40
READ_VOUT ................................................. ............................ 40
READ_IOUT ................................................. ............................. 40
READ_PIN ................................................. ................................. 40
PMBUS_REVISION ................................................. ................. 40
MFR_ID ................................................. ...................................... 41
MFR_MODEL ................................................. ........................... 41
MFR_REVISION ................................................. ....................... 41
PEAK_IOUT ................................................. .............................. 41
PEAK_VIN ................................................. ................................. 41
PEAK_VOUT ................................................. ............................ 42
PMON_CONTROL ................................................. .................. 42
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