ZHCSGE0B June 2017 – January 2019 TPS53681
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Supply: Currents, UVLO, and Power-On Reset
- 6.6 References: DAC and VREF
- 6.7 Voltage Sense: AVSP and BVSP, AVSN and BVSN
- 6.8 Telemetry
- 6.9 Input Current Sensing
- 6.10 Programmable Loadline Settings
- 6.11 Current Sense and Calibration
- 6.12 Logic Interface Pins: AVR_EN, AVR_RDY, BVR_EN, BVR_RDY, RESET, VR_FAULT, VR_HOT
- 6.13 I/O Timing
- 6.14 PMBus Address Setting
- 6.15 Overcurrent Limit Thresholds
- 6.16 Switching Frequency
- 6.17 Slew Rate Settings
- 6.18 Ramp Selections
- 6.19 Dynamic Integration and Undershoot Reduction
- 6.20 Boot Voltage and TMAX Settings
- 6.21 Protections: OVP and UVP
- 6.22 Protections: ATSEN and BTSEN Pin Voltage Levels and Fault
- 6.23 PWM: I/O Voltage and Current
- 6.24 Dynamic Phase Add and Drop
- 6.25 Typical Characteristics
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3 Feature Description
- 7.4 Device Functional Modes
- 7.5
Programming
- 7.5.1 PMBus Connections
- 7.5.2 PMBus Address Selection
- 7.5.3 Supported Commands
- 7.5.4 Commonly Used PMBus Commands
- 7.5.5 Voltage, Current, Power, and Temperature Readings
- 7.5.6 Input Current Sense and Calibration
- 7.5.7 Output Current Sense and Calibration
- 7.5.8 Output Voltage Margin Testing
- 7.5.9 Loop Compensation
- 7.5.10 Converter Protection and Response
- 7.5.11 Output Overvoltage Protection and Response
- 7.5.12 Maximum Allowed Output Voltage Setting
- 7.5.13 Output Undervoltage Protection and Response
- 7.5.14 Minimum Allowed Output Voltage Setting
- 7.5.15 Output Overcurrent Protection and Response
- 7.5.16 Input Under-Voltage Lockout (UVLO)
- 7.5.17 Input Over-Voltage Protection and Response
- 7.5.18 Input Undervoltage Protection and Response
- 7.5.19 Input Overcurrent Protection and Response
- 7.5.20 Over-Temperature Protection and Response
- 7.5.21 Dynamic Phase Shedding (DPS)
- 7.5.22 NVM Programming
- 7.5.23 NVM Security
- 7.5.24 Black Box Recording
- 7.5.25 Board Identification and Inventory Tracking
- 7.5.26 Status Reporting
-
8 Applications, Implementation, and Layout
- 8.1 Application Information
- 8.2 Typical Application
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- RSB|40
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- RSB|40
訂購信息
7.5.2 PMBus Address Selection
The PMBus slave addresses for TPS53681 are selected with a resistor divider from VREF to ADDR.
The PMBus slave address is set by the voltage on the ADDR pin. Refer to Table 4. With the desired PMBus address, and RADDRL selected, calculate the RADDRH using Equation 2.
Note that TPS53681 uses 7 bit addressing, per the SMBus specification. Users communicating to the device using generic I2C drivers should be aware that these 7 bits occupy the most significant bits of the first byte in each transaction, with the least significant bit being the data direction bit (0 for write operations, 1 for read operations). That is, for read transactions, the address byte is A6A5A4A3A2A1A01 and for write operations the address byte is A6A5A4A3A2A1A00. Refer to the SMBus specification for more information.
The general procedure for selecting these resistors is as follows:
- Determine the desired PMBus slave addresses, per system requirements
- Select an RADDRL value of 10 kΩ or 20 kΩ
- Using the desired PMBus address, refer to Table 4 for the desired address pin voltage
- Use Equation 2 to calculate RADDRH
Figure 13. PMBus Address Selection Contact your local Texas Instruments representative for a copy of the PMBus address setting design tool spreadsheet.
Table 4. PMBus Slave Address Selection
| VADDR (V) | PMBus Address
(7 bit binary) A6A5A4A3A2A1A0 |
PMBus Address
(7-bit decimal) |
I2C Address Byte
(Write Operation) |
I2C Address Byte
(Read Operation) |
|---|---|---|---|---|
| ≤ 0.039 V | 1011000b | 88d | B0h | B1h |
| 0.073 V ± 15 mV | 1011001b | 89d | B2h | B3h |
| 0.122 V ± 15 mV | 1011010b | 90d | B4h | B5h |
| 0.171 V ± 15 mV | 1011011b | 91d | B6h | B7h |
| 0.219 V ± 15 mV | 1011100b | 92d | B8h | B9h |
| 0.268 V ± 15 mV | 1011101b | 93d | BAh | BBh |
| 0.317 V ± 15 mV | 1011110b | 94d | BCh | BDh |
| 0.366 V ± 15 mV | 1011111b | 95d | BEh | BFh |
| 0.415 V ± 15 mV | 1100000b | 96d | C0h | C1h |
| 0.464 V ± 15 mV | 1100001b | 97d | C2h | C3h |
| 0.513 V ± 15 mV | 1100010b | 98d | C4h | C5h |
| 0.562 V ± 15 mV | 1100011b | 99d | C6h | C7h |
| 0.610 V ± 15 mV | 1100100b | 100d | C8h | C9h |
| 0.660 V ± 15 mV | 1100101b | 101d | CAh | CBh |
| 0.708 V ± 15 mV | 1100110b | 102d | CCh | CDh |
| 0.757 V ± 15 mV | 1100111b | 103d | CEh | CFh |
| 0.806 V ± 15 mV | 1101000b | 104d | D0h | D1h |
| 0.854 V ± 15 mV | 1101001b | 105d | D2h | D3h |
| 0.903 V ± 15 mV | 1101010b | 106d | D4h | D5h |
| 0.952 V ± 15 mV | 1101011b | 107d | D6h | D7h |
| 1.000 V ± 15 mV | 1101100b | 108d | D8h | D9h |
| 1.050 V ± 15 mV | 1101101b | 109d | DAh | DBh |
| 1.098 V ± 15 mV | 1101110b | 110d | DCh | DDh |
| 1.147 V ± 15 mV | 1101111b | 111d | DEh | DFh |
| 1.196 V ± 15 mV | 1110000b | 112d | E0h | E1h |
| 1.245 V ± 15 mV | 1110001b | 113d | E2h | E3h |
| 1.294 V ± 15 mV | 1110010b | 114d | E4h | E5h |
| 1.343 V ± 15 mV | 1110011b | 115d | E6h | E7h |
| 1.392 V ± 15 mV | 1110100b | 116d | E8h | E9h |
| 1.440 V ± 15 mV | 1110101b | 117d | EAh | EBh |
| 1.489 V ± 15 mV | 1110110b | 118d | ECh | EDh |
| 1.540 V ± 15 mV | 1110111b | 119d | EEh | EFh |