SLVSA67F February 2010 – April 2020 TPS62400-Q1 , TPS62402-Q1 , TPS62404-Q1 , TPS62405-Q1
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
- 9 Detailed Description
-
10Application and Implementation
- 10.1 Application Information
- 10.2
Typical Application
- 10.2.1 Design Requirements
- 10.2.2
Detailed Design Procedure
- 10.2.2.1
Output Voltage Setting
- 10.2.2.1.1 Converter 1 Adjustable Default Output-Voltage Setting: TPS62400-Q1
- 10.2.2.1.2 Converter 1 Fixed Default Output-Voltage Setting (TPS62402-Q1, TPS62404-Q1, and TPS62405-Q1)
- 10.2.2.1.3 Converter 2 Adjustable Default Output-Voltage Setting (TPS62400-Q1):
- 10.2.2.1.4 Converter 2 Fixed Default Output-Voltage Setting
- 10.2.2.2 Output Filter Design (Inductor and Output Capacitor)
- 10.2.2.1
Output Voltage Setting
- 10.2.3 Application Curves
- 10.3 System Examples
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
封裝選項
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DRC|10
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DRC|10
訂購信息
9.5.1.3 Mode Selection
Use of the MODE/DATA pin for two functions, interface and mode selection, necessitates a determination of when to decode the bit stream or to change the operation mode.
The device enters forced PWM mode operation immediately whenever the MODE/DATA pin turns to high level. The device also stays in forced PWM mode during the entire protocol reception time.
With a falling edge on the MODE/DATA pin, the device starts bit decoding. If the MODE/DATA pin stays low for at least ttimeout, the device gets an internal time-out and enables power-save-mode operation.
The device ignores a protocol sent within this time because the first interpretation of a falling edge for the mode change is at the start of the first bit. In this case, TI recommends sending the protocol first, and then changing to power-save mode at the end of the protocol.
Figure 9. EasyScale Protocol Overview Table 3. EasyScale Bit Description
| BYTE | BIT NUMBER | NAME | TRANSMISSION DIRECTION | DESCRIPTION |
|---|---|---|---|---|
| Device address byte | 7 | DA7 | IN | 0 MSB device address |
| 6 | DA6 | IN | 1 | |
| 5 | DA5 | IN | 0 | |
| 4 | DA4 | IN | 0 | |
| 4E hex | 3 | DA3 | IN | 1 |
| 2 | DA2 | IN | 1 | |
| 1 | DA1 | IN | 1 | |
| 0 | DA0 | IN | 0 LSB device address | |
| Data byte | 7 (MSB) | RFA | IN | Request for acknowledge; if high, the device applies an acknowledge condition. |
| 6 | A1 | Address bit 1 | ||
| 5 | A0 | Address bit 0 | ||
| 4 | D4 | Data bit 4 | ||
| 3 | D3 | Data bit 3 | ||
| 2 | D2 | Data bit 2 | ||
| 1 | D1 | Data bit 1 | ||
| 0 (LSB) | D0 | Data bit 0 | ||
| ACK | OUT | Acknowledge condition active 0, the device applies this condition only in the case of a set RFA bit. Open-drain output, the host must pull the line high with a pullup resistor. | ||
| One can only use this feature if the master has an open-drain output stage. In case of a push-pull output stage, do not request an acknowledge condition. |
Figure 10. EasyScale Protocol Without Acknowledge 
Figure 11. EasyScale Protocol Including Acknowledge 
Figure 12. EasyScale – Bit Coding 
Figure 13. MODE/DATA PIN: Mode Selection 
Figure 14. MODE/DATA Pin: Power-Save-Mode and Interface Communication Table 4. Selectable Output Voltages for Converter 1,
With Pin DEF_1 as Digital Input (TPS62402-Q1)
Table 5. Selectable Output Voltages for Converter 1,
With DEF1 Pin as Analog Input (Adjustable, TPS62400-Q1)
| TPS62400-Q1 OUTPUT VOLTAGE [V]
REGISTER REG_DEF_1_LOW |
D4 | D3 | D2 | D1 | D0 | |
|---|---|---|---|---|---|---|
| 0 | VOUT1 Adjustable with Resistor Network on DEF_1 Pin (default TPS62400-Q1) | 0 | 0 | 0 | 0 | 0 |
| 0.6 V with DEF_1 connected to VOUT1 (default TPS62400-Q1) | ||||||
| 1 | 0.825 | 0 | 0 | 0 | 0 | 1 |
| 2 | 0.85 | 0 | 0 | 0 | 1 | 0 |
| 3 | 0.875 | 0 | 0 | 0 | 1 | 1 |
| 4 | 0.9 | 0 | 0 | 1 | 0 | 0 |
| 5 | 0.925 | 0 | 0 | 1 | 0 | 1 |
| 6 | 0.95 | 0 | 0 | 1 | 1 | 0 |
| 7 | 0.975 | 0 | 0 | 1 | 1 | 1 |
| 8 | 1 | 0 | 1 | 0 | 0 | 0 |
| 9 | 1.025 | 0 | 1 | 0 | 0 | 1 |
| 10 | 1.05 | 0 | 1 | 0 | 1 | 0 |
| 11 | 1.075 | 0 | 1 | 0 | 1 | 1 |
| 12 | 1.1 | 0 | 1 | 1 | 0 | 0 |
| 13 | 1.125 | 0 | 1 | 1 | 0 | 1 |
| 14 | 1.15 | 0 | 1 | 1 | 1 | 0 |
| 15 | 1.175 | 0 | 1 | 1 | 1 | 1 |
| 16 | 1.2 | 1 | 0 | 0 | 0 | 0 |
| 17 | 1.225 | 1 | 0 | 0 | 0 | 1 |
| 18 | 1.25 | 1 | 0 | 0 | 1 | 0 |
| 19 | 1.275 | 1 | 0 | 0 | 1 | 1 |
| 20 | 1.3 | 1 | 0 | 1 | 0 | 0 |
| 21 | 1.325 | 1 | 0 | 1 | 0 | 1 |
| 22 | 1.35 | 1 | 0 | 1 | 1 | 0 |
| 23 | 1.375 | 1 | 0 | 1 | 1 | 1 |
| 24 | 1.4 | 1 | 1 | 0 | 0 | 0 |
| 25 | 1.425 | 1 | 1 | 0 | 0 | 1 |
| 26 | 1.45 | 1 | 1 | 0 | 1 | 0 |
| 27 | 1.475 | 1 | 1 | 0 | 1 | 1 |
| 28 | 1.5 | 1 | 1 | 1 | 0 | 0 |
| 29 | 1.525 | 1 | 1 | 1 | 0 | 1 |
| 30 | 1.55 | 1 | 1 | 1 | 1 | 0 |
| 31 | 1.575 | 1 | 1 | 1 | 1 | 1 |