ZHCSK35C March 2019 – March 2021 TPS92682-Q1
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 Device Enable
- 7.3.2 Internal Regulator and Undervoltage Lockout (UVLO)
- 7.3.3 Oscillator
- 7.3.4 Spread Spectrum Function
- 7.3.5 Gate Driver
- 7.3.6 Rail-to-Rail Current Sense Amplifier
- 7.3.7 Transconductance Error Amplifier
- 7.3.8 Switch Current Sense
- 7.3.9 Slope Compensation
- 7.3.10 ILED Setting in CC Mode
- 7.3.11 Output Voltage Setting in CV Mode
- 7.3.12 PWM Dimming
- 7.3.13 P-Channel FET Gate Driver Output
- 7.3.14 Soft Start
- 7.3.15 Two-Phase Operation
- 7.3.16 Faults and Diagnostics
- 7.4 Device Functional Modes
- 7.5 Programming
- 7.6
TPS92682 Registers
- 7.6.1 EN Register
- 7.6.2 CFG1 Register
- 7.6.3 CFG2 Register
- 7.6.4 SWDIV Register
- 7.6.5 ISLOPE Register
- 7.6.6 FM Register
- 7.6.7 SOFTSTART Register
- 7.6.8 CH1IADJ Register
- 7.6.9 CH2IADJ Register
- 7.6.10 PWMDIV Register
- 7.6.11 CH1PWML Register
- 7.6.12 CH1PWMH Register
- 7.6.13 CH2PWML Register
- 7.6.14 CH2PWMH Register
- 7.6.15 ILIM Register
- 7.6.16 IFT Register
- 7.6.17 MFT Register
- 7.6.18 FLT1 Register (read only)
- 7.6.19 FLT2 Register (read only)
- 7.6.20 FEN1 Register
- 7.6.21 FEN2 Register
- 7.6.22 FLATEN Register
- 7.6.23 OV Register
- 7.6.24 LHCFG Register
- 7.6.25 LHCH1IADJ Register
- 7.6.26 LHCH2IADJ Register
- 7.6.27 LHCH1PWML Register
- 7.6.28 LHCH1PWMH Register
- 7.6.29 LHCH2PWML Register
- 7.6.30 LHCH2PWMH Register
- 7.6.31 LHILIM Register
- 7.6.32 LHIFT Register
- 7.6.33 LHMFT Register
- 7.6.34 LHFEN1 Register
- 7.6.35 LHFEN2 Register
- 7.6.36 LHFLATEN Register
- 7.6.37 LHOV Register
- 7.6.38 CAL Register
- 7.6.39 RESET Register
-
8 Application and Implementation
- 8.1 Application Information General Design Considerations
- 8.2 Application Information CC Mode
- 8.3 Typical Application CV Mode
- 8.4
Typical Application CC Mode
- 8.4.1 CC Boost Design Requirements
- 8.4.2
CC Boost Detailed Design Procedure
- 8.4.2.1 Calculating Duty Cycle
- 8.4.2.2 Setting Switching Frequency
- 8.4.2.3 Setting Dither Modulation Frequency
- 8.4.2.4 Inductor Selection
- 8.4.2.5 Output Capacitor Selection
- 8.4.2.6 Input Capacitor Selection
- 8.4.2.7 Main N-Channel MOSFET Selection
- 8.4.2.8 Rectifier Diode Selection
- 8.4.2.9 Setting ILED and Selecting RCS
- 8.4.2.10 Setting Switch Current Limit
- 8.4.2.11 Slope Compensation
- 8.4.2.12 Compensator Parameters
- 8.4.2.13 Overvoltage Protection
- 8.4.2.14 Series P-Channel MOSFET Selection
- 8.4.3 CC Buck-Boost Design Requirements
- 8.4.4
CC Buck-Boost Detailed Design Procedure
- 8.4.4.1 Calculating Duty Cycle
- 8.4.4.2 Setting Switching Frequency
- 8.4.4.3 Setting Dither Modulation Frequency
- 8.4.4.4 Inductor Selection
- 8.4.4.5 Output Capacitor Selection
- 8.4.4.6 Input Capacitor Selection
- 8.4.4.7 Main N-Channel MOSFET Selection
- 8.4.4.8 Rectifier Diode Selection
- 8.4.4.9 Setting ILED and Selecting RCS
- 8.4.4.10 Setting Switch Current Limit
- 8.4.4.11 Slope Compensation
- 8.4.4.12 Compensator Parameters
- 8.4.4.13 Overvoltage Protection
- 8.4.5 PWM Dimming Consideration
- 8.4.6 Application Curves
- 8.5
Typical Application CV Mode
- 8.5.1 CV Design Requirements
- 8.5.2
Detailed Design Procedure
- 8.5.2.1 Calculating Duty Cycle
- 8.5.2.2 Setting Switching Frequency
- 8.5.2.3 Setting Dither Modulation Frequency
- 8.5.2.4 Inductor Selection
- 8.5.2.5 Output Capacitor Selection
- 8.5.2.6 Input Capacitor Selection
- 8.5.2.7 Main N-Channel MOSFET Selection
- 8.5.2.8 Rectifier Diode Selection
- 8.5.2.9 Programming VOUT
- 8.5.2.10 Setting Switch Current Limit
- 8.5.2.11 Slope Compensation
- 8.5.2.12 Compensator Parameters
- 8.5.2.13 Overvoltage Protection
- 8.5.3 Application Curves
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
訂購信息
8.3.1 Inductor Selection
The choice of the inductors in CV BOOST is highly dependent on the efficiency and the form-factor targets. One parameter that affects these specifications is the desired inductor current ripple. A common first choice for the inductor current ripple, ΔiL-PP, is 50% of the nominal inductor current IL.
Equation 39. 
where
- M = VO / VIN
BOOST voltage regulators can be configured to operate in Discontinuous Conduction Mode (DCM) to achieve higher efficiency at light load. The condition to operate in DCM versus CCM are shown in Equation 40 and Equation 41:
CCM Operation:
Equation 40. 
DCM Operation:
Equation 41. 