ZHCSOF7B september 2022 – june 2023 TPS25990
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 說明（續(xù)）
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics
- 7.6 Logic Interface DC Characteristics
- 7.7 Telemetry
- 7.8 PMBus Interface Timing Characteristics
- 7.9 External EEPROM Interface Timing Characteristics
- 7.10 Timing Requirements
- 7.11 Switching Characteristics
- 7.12 Typical Characteristics
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Undervoltage Protection
- 8.3.2 Insertion Delay
- 8.3.3 Overvoltage Protection
- 8.3.4 Inrush Current, Overcurrent, and Short-Circuit Protection
- 8.3.5 Single Point Failure Mitigation
- 8.3.6 Analog Load Current Monitor (IMON)
- 8.3.7 Overtemperature Protection
- 8.3.8 Analog Junction Temperature Monitor (TEMP)
- 8.3.9 FET Health Monitoring
- 8.3.10 General Purpose Digital Input/Output Pins
- 8.3.11 Stacking Multiple eFuses for Unlimited Scalability
- 8.3.12 General Purpose Comparators
- 8.3.13 Output Discharge
- 8.3.14
PMBus? Digital Interface
- 8.3.14.1 PMBus? Device Addressing
- 8.3.14.2 SMBus Protocol
- 8.3.14.3 SMBus? Message Formats
- 8.3.14.4 Packet Error Checking
- 8.3.14.5 Group Commands
- 8.3.14.6 SMBus? Alert Response Address (ARA)
- 8.3.14.7
PMBus? Commands
- 8.3.14.7.1
Detailed Descriptions of PMBus? Commands
- 8.3.14.7.1.1 OPERATION (01h, Read/Write Byte)
- 8.3.14.7.1.2 CLEAR_FAULTS (03h, Send Byte)
- 8.3.14.7.1.3 RESTORE_FACTORY_DEFAULTS (12h, Send Byte)
- 8.3.14.7.1.4 STORE_USER_ALL (15h, Send Byte)
- 8.3.14.7.1.5 RESTORE_USER_ALL (16h, Send Byte)
- 8.3.14.7.1.6 BB_ERASE (F5h, Send Byte)
- 8.3.14.7.1.7 FETCH_BB_EEPROM (F6h, Send Byte)
- 8.3.14.7.1.8 POWER_CYCLE (D9h, Send Byte)
- 8.3.14.7.1.9 MFR_WRITE_PROTECT (F8h, Read/Write Byte)
- 8.3.14.7.1.10 CAPABILITY (19h, Read Byte)
- 8.3.14.7.1.11 STATUS_BYTE (78h, Read Byte)
- 8.3.14.7.1.12 STATUS_WORD (79h, Read Word)
- 8.3.14.7.1.13 STATUS_OUT (7Ah, Read Byte)
- 8.3.14.7.1.14 STATUS_IOUT (7Bh, Read Byte)
- 8.3.14.7.1.15 STATUS_INPUT (7Ch, Read Byte)
- 8.3.14.7.1.16 STATUS_TEMP (7Dh, Read Byte)
- 8.3.14.7.1.17 STATUS_CML (7Eh, Read Byte)
- 8.3.14.7.1.18 STATUS_MFR_SPECIFIC (80h, Read Byte)
- 8.3.14.7.1.19 STATUS_MFR_SPECIFIC_2 (F3h, Read Word)
- 8.3.14.7.1.20 PMBUS_REVISION (98h, Read Byte)
- 8.3.14.7.1.21 MFR_ID (99h, Block Read)
- 8.3.14.7.1.22 MFR_MODEL (9Ah, Block Read)
- 8.3.14.7.1.23 MFR_REVISION (9Bh, Block Read)
- 8.3.14.7.1.24 READ_VIN (88h, Read Word)
- 8.3.14.7.1.25 READ_VOUT (8Bh, Read Word)
- 8.3.14.7.1.26 READ_IIN (89h, Read Word)
- 8.3.14.7.1.27 READ_TEMPERATURE_1 (8Dh, Read Word)
- 8.3.14.7.1.28 READ_VAUX (D0h, Read Word)
- 8.3.14.7.1.29 READ_PIN (97h, Read Word)
- 8.3.14.7.1.30 READ_EIN (86h, Block Read)
- 8.3.14.7.1.31 READ_VIN_AVG (DCh, Read Word)
- 8.3.14.7.1.32 READ_VIN_MIN (D1h, Read Word)
- 8.3.14.7.1.33 READ_VIN_PEAK (D2h, Read Word)
- 8.3.14.7.1.34 READ_VOUT_AVG (DDh, Read Word)
- 8.3.14.7.1.35 READ_VOUT_MIN (DAh, Read Word)
- 8.3.14.7.1.36 READ_IIN_AVG (DEh, Read Word)
- 8.3.14.7.1.37 READ_IIN_PEAK (D4h, Read Word)
- 8.3.14.7.1.38 READ_TEMP_AVG (D6h, Read Word)
- 8.3.14.7.1.39 READ_TEMP_PEAK (D7h, Read Word)
- 8.3.14.7.1.40 READ_PIN_AVG (DFh, Read Word)
- 8.3.14.7.1.41 READ_PIN_PEAK (D5h, Read Word)
- 8.3.14.7.1.42 READ_SAMPLE_BUF (D8h, Block Read)
- 8.3.14.7.1.43 READ_BB_RAM (FDh, Block Read)
- 8.3.14.7.1.44 READ_BB_EEPROM (F4h, Block Read)
- 8.3.14.7.1.45 BB_TIMER (FAh, Read Byte)
- 8.3.14.7.1.46 PMBUS_ADDR (FBh, Read/Write Byte)
- 8.3.14.7.1.47 VIN_UV_WARN (58h, Read/Write Word)
- 8.3.14.7.1.48 VIN_UV_FLT (59h, Read/Write Word)
- 8.3.14.7.1.49 VIN_OV_WARN (57h, Read/Write Word)
- 8.3.14.7.1.50 VIN_OV_FLT (55h, Read/Write Word)
- 8.3.14.7.1.51 VOUT_UV_WARN (43h, Read/Write Word)
- 8.3.14.7.1.52 VOUT_PGTH (5Fh, Read/Write Word)
- 8.3.14.7.1.53 OT_WARN (51h, Read/Write Word)
- 8.3.14.7.1.54 OT_FLT (4Fh, Read/Write Word)
- 8.3.14.7.1.55 PIN_OP_WARN (6Bh, Read/Write Word)
- 8.3.14.7.1.56 IIN_OC_WARN (5Dh, Read/Write Word)
- 8.3.14.7.1.57 VIREF (E0h, Read/Write Byte)
- 8.3.14.7.1.58 GPIO_CONFIG_12 (E1h, Read/Write Byte)
- 8.3.14.7.1.59 GPIO_CONFIG_34 (E2h, Read/Write Byte)
- 8.3.14.7.1.60 ALERT_MASK (DBh, Read/Write Word)
- 8.3.14.7.1.61 FAULT_MASK (E3h, Read/Write Word)
- 8.3.14.7.1.62 DEVICE_CONFIG (E4h, Read/Write Word)
- 8.3.14.7.1.63 BB_CONFIG (E5h, Read/Write Byte)
- 8.3.14.7.1.64 OC_TIMER (E6h, Read/Write Byte)
- 8.3.14.7.1.65 RETRY_CONFIG (E7h, Read/Write Byte)
- 8.3.14.7.1.66 ADC_CONFIG_1 (E8h, Read/Write Byte)
- 8.3.14.7.1.67 ADC_CONFIG_2 (E9h, Read/Write Byte)
- 8.3.14.7.1.68 PK_MIN_AVG (EAh, Read/Write Byte)
- 8.3.14.7.1.69 VCMPxREF (EBh, Read/Write Byte)
- 8.3.14.7.1.70 PSU_VOLTAGE (ECh, Read/Write Byte)
- 8.3.14.7.1.71 CABLE_DROP (EDh, Read/Write Byte)
- 8.3.14.7.1.72 GPDAC1 (F0h, Read/Write Byte)
- 8.3.14.7.1.73 GPDAC2 (F1h, Read/Write Byte)
- 8.3.14.7.1.74 INS_DLY (F9h, Read/Write Byte)
- 8.3.14.7.1
Detailed Descriptions of PMBus? Commands
- 8.3.14.8 Analog-to-digital Converter
- 8.3.14.9 Digital-to-analog Converters
- 8.3.14.10 DIRECT format Conversion
- 8.3.14.11 Blackbox Fault Recording
- 8.4 Device Functional Modes
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RQP|26
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
8.3.6 Analog Load Current Monitor (IMON)
The TPS25990 allows the system to monitor the output load current accurately by providing an analog current on the IMON pin which is proportional to the current through the FET. The benefit of having a current output is that the signal can be routed across a board without adding significant errors due to voltage drop or noise coupling from adjacent traces. The current output also allows the IMON pins of multiple eFuse devices (TPS25990 or TPS25985x) to be tied together to get the total current in a parallel configuration. The IMON signal can be converted to a voltage by dropping it across a resistor at the point of monitoring. The user can sense the voltage (VIMON) across the RIMON to get a measure of the output load current using Equation 10.
The TPS25990 IMON circuit is designed to provide high bandwidth and high accuracy across load and temperature conditions, irrespective of board layout and other system operating conditions. This design allows the IMON signal to be used for advanced dynamic platform power management techniques such as Intel PSYS or PROCHOT to maximize system power usage and platform throughput without sacrificing safety or reliability.
Figure 8-6 Analog Load Current Monitor ResponseThe IMON pin provides load current monitoring information only during steady-state. During inrush, the IMON pin reports zero load current.
- The ILIM pin reports the individual device load current at all times and can also be used as an analog load current monitor for each individual device.
TI recommends adding a 22 pF capacitor from IMON pin to GND for noise filtering purposes.
- Care must be taken to minimize parasitic capacitance on the ILIM pin to avoid any impact on the overcurrent and short-circuit protection timing during start-up.