ZHCS614G October 2011 – September 2022 TPS40422
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 说明（续）
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 PMBus Interface Protocol General Description
- 8.3.2 Voltage Reference
- 8.3.3 Output Voltage
- 8.3.4 Voltage Feed Forward
- 8.3.5 Current Sensing
- 8.3.6 Overcurrent Protection
- 8.3.7 Current Sharing
- 8.3.8 Linear Regulators
- 8.3.9 BP Switch-over
- 8.3.10 Switching Frequency Setting
- 8.3.11 Switching Node and BOOT Voltage
- 8.3.12 Reading the Output Current
- 8.3.13 Soft-Start Time
- 8.3.14 Turn-On/Turn-Off Delay and Sequencing
- 8.3.15 Pre-Biased Output Start-Up
- 8.3.16 Undervoltage Lockout
- 8.3.17 Overvoltage and Undervoltage Fault Protection
- 8.3.18 Power Good
- 8.3.19 Overtemperature Fault Protection
- 8.3.20 Thermal Shutdown
- 8.3.21 Programmable Fault Responses
- 8.3.22 User Data
- 8.3.23 Adjustable Anti-Cross Conduction Delay
- 8.3.24 Connection of Unused Pins
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Maps
- 8.6.1
Supported Commands
- 8.6.1.1 PAGE (00h)
- 8.6.1.2 OPERATION (01h)
- 8.6.1.3 ON_OFF_CONFIG (02h)
- 8.6.1.4 CLEAR_FAULTS (03h)
- 8.6.1.5 WRITE_PROTECT (10h)
- 8.6.1.6 STORE_USER_ALL (15h)
- 8.6.1.7 RESTORE_USER_ALL (16h)
- 8.6.1.8 CAPABILITY (19h)
- 8.6.1.9 VOUT_MODE (20h)
- 8.6.1.10 VIN_ON (35h)
- 8.6.1.11 VIN_OFF (36h)
- 8.6.1.12 IOUT_CAL_GAIN (38h)
- 8.6.1.13 IOUT_CAL_OFFSET (39h)
- 8.6.1.14 IOUT_OC_FAULT_LIMIT (46h)
- 8.6.1.15 IOUT_OC_FAULT_RESPONSE (47h)
- 8.6.1.16 IOUT_OC_WARN_LIMIT (4Ah)
- 8.6.1.17 OT_FAULT_LIMIT (4Fh)
- 8.6.1.18 OT_WARN_LIMIT (51h)
- 8.6.1.19 TON_RISE (61h)
- 8.6.1.20 STATUS_BYTE (78h)
- 8.6.1.21 STATUS_WORD (79h)
- 8.6.1.22 STATUS_VOUT (7Ah)
- 8.6.1.23 STATUS_IOUT (7Bh)
- 8.6.1.24 STATUS_TEMPERATURE (7Dh)
- 8.6.1.25 STATUS_CML (7Eh)
- 8.6.1.26 STATUS_MFR_SPECIFIC (80h)
- 8.6.1.27 READ_VOUT (8Bh)
- 8.6.1.28 READ_IOUT (8Ch)
- 8.6.1.29 READ_TEMPERATURE_2 (8Eh)
- 8.6.1.30 PMBUS_REVISION (98h)
- 8.6.1.31 MFR_SPECIFIC_00 (D0h)
- 8.6.1.32 VREF_TRIM (MFR_SPECIFIC_04) (D4h)
- 8.6.1.33 STEP_VREF_MARGIN_HIGH (MFR_SPECIFIC_05) (D5h)
- 8.6.1.34 STEP_VREF_MARGIN_LOW (MFR_SPECIFIC_06) (D6h)
- 8.6.1.35 PCT_VOUT_FAULT_PG_LIMIT (MFR_SPECIFIC_07) (D7h)
- 8.6.1.36 126
- 8.6.1.37 SEQUENCE_TON_TOFF_DELAY (MFR_SPECIFIC_08) (D8h)
- 8.6.1.38 128
- 8.6.1.39 OPTIONS (MFR_SPECIFIC_21) (E5h)
- 8.6.1.40 DEVICE_CODE (MFR_SPECIFIC_44) (FCh)
- 8.6.1
Supported Commands
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Application
- 9.2.1
Dual-Output Converter
- 9.2.1.1 Design Requirements
- 9.2.1.2
Detailed Design Procedure
- 9.2.1.2.1 Custom Design with WEBENCH® Tools
- 9.2.1.2.2 Step 1: Inductor Selection
- 9.2.1.2.3 Step 2: Output Capacitor Selection
- 9.2.1.2.4 Step 3: Input Capacitance Selection
- 9.2.1.2.5 Step 4: MOSFET Selection
- 9.2.1.2.6 Step 5: Snubber Circuit Design
- 9.2.1.2.7 Step 6: Soft-Start Time
- 9.2.1.2.8
Step 7: Peripheral Component Design
- 9.2.1.2.8.1 RT (Pin 1) Switching Frequency Setting
- 9.2.1.2.8.2 FB1 (Pin 2) and FB2 (Pin 8) Output Voltage Setting
- 9.2.1.2.8.3 Compensation Network Using COMP1 (Pin 3) , COMP2 (Pin 7), FB1 (Pin 2) FB2 DIFFO1 (Pin 8) (Pin 39)
- 9.2.1.2.8.4 Remote Sensing Using VSNS1 (Pin 37), GSNS1 (Pin 38) , VSNS2 (Pin 15), and GSNS2 (Pin 14)
- 9.2.1.2.8.5 Temperate Sensing Using TSNS1 (Pin36) and TSNS2 (Pin 16)
- 9.2.1.2.8.6 Current Sensing Network Design Using CS1P (Pin 34), CS1N (Pin 35) , CS2P (Pin 18), and CS2N (Pin 17)
- 9.2.1.2.8.7 PMBus Address ADDR1 (Pin 9) , and ADDR0 (Pin 10)
- 9.2.1.2.8.8
Voltage Decoupling Capacitors
- 9.2.1.2.8.8.1 VDD (Pin 31)
- 9.2.1.2.8.8.2 BP3 (Pin 32)
- 9.2.1.2.8.8.3 BNEXT (Pin 24)
- 9.2.1.2.8.8.4 BP6 (Pin 25)
- 9.2.1.2.8.8.5 Power Good PGOOD1 (Pin 33), PGOOD2 (Pin 19)
- 9.2.1.2.8.8.6 Bootstrap Capacitors BOOT1 (Pin 30), and BOOT2 (Pin 20)
- 9.2.1.2.8.8.7 High-Side MOSFET (Gate) Resistor
- 9.2.1.2.8.8.8 Synchronization Setting SYNC (Pin 40)
- 9.2.1.2.8.8.9 BP6 (Pin 25)
- 9.2.1.2.8.8.10 DIFFO (Pin 39)
- 9.2.1.3 Application Curves
- 9.2.1
Dual-Output Converter
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
8.6.1.27 READ_VOUT (8Bh)
READ_VOUT is a paged register. The READ_VOUT commands returns two bytes of data in the linear data format that represent the output voltage of the controller. The output voltage is sensed at the remote sense amplifier output pin so voltage drop to the load is not accounted for. The data format is as shown below:
| COMMAND | READ_VOUT | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Format | Linear, two's complement binary | |||||||||||||||
| Bit Position | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Access | r | r | r | r | r | r | r | r | r | r | r | r | r | r | r | r |
| Function | Mantissa | |||||||||||||||
| Default Value | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The setting of the VOUT_MODE affects the results of this command as well. In the TPS4022 device , VOUT_MODE is set to linear mode with an exponent of –9 and cannot be altered. The output voltage calculation is shown in Equation 14.
Equation 14. 