ZHCSPT6D July 2023 – June 2024 TPSM8287A06 , TPSM8287A10 , TPSM8287A12 , TPSM8287A15
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Device Options
- 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 Fixed-Frequency DCS-Control Topology
- 7.3.2 Forced-PWM and Power-Save Modes
- 7.3.3 Precise Enable
- 7.3.4 Start-Up
- 7.3.5 Switching Frequency Selection
- 7.3.6 Output Voltage Setting
- 7.3.7 Compensation (COMP)
- 7.3.8 Mode Selection / Clock Synchronization (MODE/SYNC)
- 7.3.9 Spread Spectrum Clocking (SSC)
- 7.3.10 Output Discharge
- 7.3.11 Undervoltage Lockout (UVLO)
- 7.3.12 Overvoltage Lockout (OVLO)
- 7.3.13 Overcurrent Protection
- 7.3.14 Power Good (PG)
- 7.3.15 Remote Sense
- 7.3.16 Thermal Warning and Shutdown
- 7.3.17 Stacked Operation
- 7.4 Device Functional Modes
- 7.5 Programming
- 8 Device Registers
-
9 Application and Implementation
- 9.1 Application Information
- 9.2 Typical Application
- 9.3 Typical Application Using Four TPSM8287Axx in Parallel Operation
- 9.4 Power Supply Recommendations
- 9.5 Layout
- 10Device and Documentation Support
- 11Revision History
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RDV|39
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
7.3.6.4 Dynamic Voltage Scaling (DVS)
If the user changes the output voltage setpoint while the device is operating, the device ramps up or down to the new voltage setting in a controlled way.
The VRAMP[1:0] bits in the CONTROL1 register set the slew rate when the device ramps from one voltage to another during DVS (see Table 7-4). The ramp rate is independent of the setting of the VRANGE[1:0] bits.
| VRAMP[1:0] | DVS Slew Rate |
|---|---|
| 0b00 | 10 mV/μs |
| 0b01 | 5 mV/μs |
| 0b10 (default) | 1.25 mV/μs |
| 0b11 | 0.5 mV/μs |
Note that ramping the output to a higher voltage requires additional output current, so that during DVS the converter must generate a total output current given by:
where:
- IOUT is the total current the converter must generate while ramping to a higher voltage
- IOUT(DC) is the DC load current
- COUT is the total output capacitance
- dVOUT/dt is the slew rate of the output voltage (programmable in the range 0.5 mV/μs to 10 mV/μs)
For correct operation, make sure that the total output current during DVS does not exceed the rated current of the device.