ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Average Current-Mode Control
- 7.3.2 Linear Regulators
- 7.3.3 AVIN and PVIN Pins
- 7.3.4 Input Undervoltage Lockout (UVLO)
- 7.3.5 Start-Up and Shutdown
- 7.3.6 Differential Sense Amplifier and Feedback Divider
- 7.3.7 Set Output Voltage and Adaptive Voltage Scaling (AVS)
- 7.3.8 Prebiased Output Start-Up
- 7.3.9 Soft Stop and (65h) TOFF_FALL Command
- 7.3.10 Power Good (PGOOD)
- 7.3.11 Set Switching Frequency
- 7.3.12 Frequency Synchronization
- 7.3.13 Loop Follower Detection
- 7.3.14 Current Sensing and Sharing
- 7.3.15 Telemetry
- 7.3.16 Overcurrent Protection
- 7.3.17 Overvoltage/Undervoltage Protection
- 7.3.18 Overtemperature Management
- 7.3.19 Fault Management
- 7.3.20 Back-Channel Communication
- 7.3.21 Switching Node (SW)
- 7.3.22 PMBus General Description
- 7.3.23 PMBus Address
- 7.3.24 PMBus Connections
- 7.4 Device Functional Modes
- 7.5 Programming
- 7.6
Register Maps
- 7.6.1 Conventions for Documenting Block Commands
- 7.6.2 (01h) OPERATION
- 7.6.3 (02h) ON_OFF_CONFIG
- 7.6.4 (03h) CLEAR_FAULTS
- 7.6.5 (04h) PHASE
- 7.6.6 (10h) WRITE_PROTECT
- 7.6.7 (15h) STORE_USER_ALL
- 7.6.8 (16h) RESTORE_USER_ALL
- 7.6.9 (19h) CAPABILITY
- 7.6.10 (1Bh) SMBALERT_MASK
- 7.6.11 (1Bh) SMBALERT_MASK_VOUT
- 7.6.12 (1Bh) SMBALERT_MASK_IOUT
- 7.6.13 (1Bh) SMBALERT_MASK_INPUT
- 7.6.14 (1Bh) SMBALERT_MASK_TEMPERATURE
- 7.6.15 (1Bh) SMBALERT_MASK_CML
- 7.6.16 (1Bh) SMBALERT_MASK_OTHER
- 7.6.17 (1Bh) SMBALERT_MASK_MFR
- 7.6.18 (20h) VOUT_MODE
- 7.6.19 (21h) VOUT_COMMAND
- 7.6.20 (22h) VOUT_TRIM
- 7.6.21 (24h) VOUT_MAX
- 7.6.22 (25h) VOUT_MARGIN_HIGH
- 7.6.23 (26h) VOUT_MARGIN_LOW
- 7.6.24 (27h) VOUT_TRANSITION_RATE
- 7.6.25 (29h) VOUT_SCALE_LOOP
- 7.6.26 (2Bh) VOUT_MIN
- 7.6.27 (33h) FREQUENCY_SWITCH
- 7.6.28 (35h) VIN_ON
- 7.6.29 (36h) VIN_OFF
- 7.6.30 (37h) INTERLEAVE
- 7.6.31 (38h) IOUT_CAL_GAIN
- 7.6.32 (39h) IOUT_CAL_OFFSET
- 7.6.33 (40h) VOUT_OV_FAULT_LIMIT
- 7.6.34 (41h) VOUT_OV_FAULT_RESPONSE
- 7.6.35 (42h) VOUT_OV_WARN_LIMIT
- 7.6.36 (43h) VOUT_UV_WARN_LIMIT
- 7.6.37 (44h) VOUT_UV_FAULT_LIMIT
- 7.6.38 (45h) VOUT_UV_FAULT_RESPONSE
- 7.6.39 (46h) IOUT_OC_FAULT_LIMIT
- 7.6.40 (47h) IOUT_OC_FAULT_RESPONSE
- 7.6.41 (4Ah) IOUT_OC_WARN_LIMIT
- 7.6.42 (4Fh) OT_FAULT_LIMIT
- 7.6.43 (50h) OT_FAULT_RESPONSE
- 7.6.44 (51h) OT_WARN_LIMIT
- 7.6.45 (55h) VIN_OV_FAULT_LIMIT
- 7.6.46 (56h) VIN_OV_FAULT_RESPONSE
- 7.6.47 (58h) VIN_UV_WARN_LIMIT
- 7.6.48 (60h) TON_DELAY
- 7.6.49 (61h) TON_RISE
- 7.6.50 (62h) TON_MAX_FAULT_LIMIT
- 7.6.51 (63h) TON_MAX_FAULT_RESPONSE
- 7.6.52 (64h) TOFF_DELAY
- 7.6.53 (65h) TOFF_FALL
- 7.6.54 (78h) STATUS_BYTE
- 7.6.55 (79h) STATUS_WORD
- 7.6.56 (7Ah) STATUS_VOUT
- 7.6.57 (7Bh) STATUS_IOUT
- 7.6.58 (7Ch) STATUS_INPUT
- 7.6.59 (7Dh) STATUS_TEMPERATURE
- 7.6.60 (7Eh) STATUS_CML
- 7.6.61 (7Fh) STATUS_OTHER
- 7.6.62 (80h) STATUS_MFR_SPECIFIC
- 7.6.63 (88h) READ_VIN
- 7.6.64 (8Bh) READ_VOUT
- 7.6.65 (8Ch) READ_IOUT
- 7.6.66 (8Dh) READ_TEMPERATURE_1
- 7.6.67 (98h) PMBUS_REVISION
- 7.6.68 (99h) MFR_ID
- 7.6.69 (9Ah) MFR_MODEL
- 7.6.70 (9Bh) MFR_REVISION
- 7.6.71 (9Eh) MFR_SERIAL
- 7.6.72 (ADh) IC_DEVICE_ID
- 7.6.73 (AEh) IC_DEVICE_REV
- 7.6.74 (B1h) USER_DATA_01 (COMPENSATION_CONFIG)
- 7.6.75 (B5h) USER_DATA_05 (POWER_STAGE_CONFIG)
- 7.6.76 (D0h) MFR_SPECIFIC_00 (TELEMETRY_CONFIG)
- 7.6.77 (DAh) MFR_SPECIFIC_10 (READ_ALL)
- 7.6.78 (DBh) MFR_SPECIFIC_11 (STATUS_ALL)
- 7.6.79 (DCh) MFR_SPECIFIC_12 (STATUS_PHASE)
- 7.6.80 (E3h) MFR_SPECIFIC_19 (PGOOD_CONFIG)
- 7.6.81 (E4h) MFR_SPECIFIC_20 (SYNC_CONFIG)
- 7.6.82 (ECh) MFR_SPECIFIC_28 (STACK_CONFIG)
- 7.6.83 (EDh) MFR_SPECIFIC_29 (MISC_OPTIONS)
- 7.6.84 (EEh) MFR_SPECIFIC_30 (PIN_DETECT_OVERRIDE)
- 7.6.85 (EFh) MFR_SPECIFIC_31 (DEVICE_ADDRESS)
- 7.6.86 (F0h) MFR_SPECIFIC_32 (NVM_CHECKSUM)
- 7.6.87 (F1h) MFR_SPECIFIC_33 (SIMULATE_FAULT)
- 7.6.88 (FAh) MFR_SPECIFIC_42 (PASSKEY)
- 7.6.89 (FBh) MFR_SPECIFIC_43 (EXT_WRITE_PROTECT)
- 7.6.90 (FCh) MFR_SPECIFIC_44 (FUSION_ID0)
- 7.6.91 (FDh) MFR_SPECIFIC_45 (FUSION_ID1)
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Application
- 8.2.1 Design Requirements
- 8.2.2
Detailed Design Procedure
- 8.2.2.1 Custom Design With WEBENCH? Tools
- 8.2.2.2 Switching Frequency
- 8.2.2.3 Inductor Selection
- 8.2.2.4 Output Capacitor Selection
- 8.2.2.5 Input Capacitor Selection
- 8.2.2.6 AVIN, BP1V5, VDD5 Bypass Capacitor
- 8.2.2.7 Bootstrap Capacitor Selection
- 8.2.2.8 R-C Snubber
- 8.2.2.9 Output Voltage Setting (VSEL Pin)
- 8.2.2.10 Compensation Selection (MSEL1 Pin)
- 8.2.2.11 Soft Start, Overcurrent Protection, and Stacking Configuration (MSEL2 Pin)
- 8.2.2.12 Enable and UVLO
- 8.2.2.13 ADRSEL
- 8.2.2.14 Pin-Strapping Resistor Selection
- 8.2.2.15 BCX_CLK and BCX_DAT
- 8.2.3 Application Curves
- 8.3
Two-Phase Application
- 8.3.1 Design Requirements
- 8.3.2 Switching Frequency
- 8.3.3 Inductor Selection
- 8.3.4 Output Capacitor Selection
- 8.3.5 Input Capacitor Selection
- 8.3.6 AVIN, BP1V5, VDD5 Bypass Capacitor
- 8.3.7 Bootstrap Capacitor Selection
- 8.3.8 R-C Snubber
- 8.3.9 Output Voltage Setting (VSEL Pin)
- 8.3.10 Compensation Selection (MSEL1 Pin)
- 8.3.11 GOSNS/FLWR Pin of Loop Follower Devices
- 8.3.12 Soft Start, Overcurrent Protection, and Stacking Configuration (MSEL2 Pin)
- 8.3.13 Enable, UVLO
- 8.3.14 VSHARE Pin
- 8.3.15 SYNC Pin
- 8.3.16 VOSNS Pin of Loop Follower Devices
- 8.3.17 Unused Pins of Loop Follower Devices
- 8.3.18 Two-phase Application Curves
- 8.4 Four-Phase Application
- 8.5 Power Supply Recommendations
- 8.6 Layout
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
7.5.2.3 Programming VSEL
The resistor divider ratio for VSEL programs the (21h) VOUT_COMMAND range, (29h) VOUT_SCALE_LOOP divider, (2Bh) VOUT_MIN, and (24h) VOUT_MAX levels according to the following tables.
Select the resistor divider code that contains the desired nominal boot voltage within the range of VOUT between minimum VOUT and maximum VOUT. For voltages from 0.5 V to 1.25 V, a single resistor to ground or a resistor divider can be used.
Table 7-12 VSEL Resistor Divider Code for
Programming
| NOMINAL BOOT VOLTAGE RANGE | RESISTOR DIVIDER CODE | ||
|---|---|---|---|
| MINIMUM VOUT | MAXIMUM VOUT | RESOLUTION | |
| EEPROM (0.8V) | EEPROM (0.8V) | N/A | Float |
| 0.5 | 1.25 | 0.050 | None |
| 0.6 | 0.75 | 0.010 | 0 |
| 0.75 | 0.9 | 0.010 | 1 |
| 0.9 | 1.05 | 0.010 | 2 |
| 1.05 | 1.2 | 0.010 | 3 |
| 1.2 | 1.5 | 0.020 | 4 |
| 1.5 | 1.8 | 0.020 | 5 |
| 1.8 | 2.1 | 0.020 | 6 |
| 2.1 | 2.4 | 0.020 | 7 |
| 2.4 | 3.0 | 0.040 | 8 |
| 3.0 | 3.6 | 0.040 | 9 |
| 3.6 | 4.2 | 0.040 | 10 |
| 4.2 | 4.8 | 0.040 | 11 |
| 3.6 | 4.2 | 0.040 | 12 |
| 4.2 | 4.8 | 0.040 | 13 |
| 4.8 | 5.4 | 0.040 | 14 |
| 5.4 | 6.0 | 0.040 | 15 |
With the resistor divider code selected for the range of VOUT, select the bottom resistor code with the (21h) VOUT_COMMAND Offset and (21h) VOUT_COMMAND step from Programming VSEL.
Table 7-13 VSEL Resistor to AGND Code for
Programming
| RESISTOR DIVIDER CODE | VOUT_SCALE_LOOP | VOUT_MIN | VOUT_MAX | VOUT_COMMAND OFFSET (V) | VOUT_COMMAND STEP (V) |
|---|---|---|---|---|---|
| Short to AGND | 0.5 | EEPROM (0.5) | EEPROM (1.5) | EEPROM | N/A |
| (0.80) | |||||
| Float | 0.5 | 0.5 | 1.5 | 1.0 | N/A |
| None | 0.5 | 0.5 | 1.5 | 0.50 | 0.050 |
| 0 | 0.5 | 0.5 | 1.5 | 0.6 | 0.010 |
| 1 | 0.5 | 0.5 | 1.5 | 0.75 | 0.010 |
| 2 | 0.5 | 0.5 | 1.5 | 0.9 | 0.010 |
| 3 | 0.5 | 0.5 | 1.5 | 1.05 | 0.010 |
| 4 | 0.25 | 1 | 3 | 1.2 | 0.020 |
| 5 | 0.25 | 1 | 3 | 1.5 | 0.020 |
| 6 | 0.25 | 1 | 3 | 1.8 | 0.020 |
| 7 | 0.25 | 1 | 3 | 2.1 | 0.020 |
| 8 | 0.125 | 2 | 6 | 2.4 | 0.040 |
| 9 | 0.125 | 2 | 6 | 3.0 | 0.040 |
| 10 | 0.125 | 2 | 6 | 3.6 | 0.040 |
| 11 | 0.125 | 2 | 6 | 4.2 | 0.040 |
| 12 | 0.125 | 2 | 6 | 3.6 | 0.040 |
| 13 | 0.125 | 2 | 6 | 4.2 | 0.040 |
| 14 | 0.125 | 2 | 6 | 4.8 | 0.040 |
| 15 | 0.125 | 2 | 6 | 5.4 | 0.040 |
To calculate the resistor to AGND code, subtract the (21h) VOUT_COMMAND offset from the target output voltage and divide by the (21h) VOUT_COMMAND step.
Equation 8. 