SLVUBZ2A September   2020  – December 2020 LM5127-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Applications
    2. 1.2 Features
  3. 2EVM Setup
    1. 2.1 EVM Characteristics
  4. 3EVM Photo
  5. 4Testing Procedures
    1. 4.1 EVM Connectors and Test Points
  6. 5Test Results
    1. 5.1 Efficiency
    2. 5.2 Thermal Performance
    3. 5.3 Steady State
    4. 5.4 Load Transient
    5. 5.5 Line Transient Responses
  7. 6Schematics, PCB Layers, and Bill of Materials
    1. 6.1 Schematics
    2. 6.2 PCB Layers
    3. 6.3 Bill of Materials
  8. 7EVM Modifications
    1. 7.1 Configure Channel 1 as a Buck Controller
      1. 7.1.1 Component Modifications
      2. 7.1.2 CFG/MODE Pin Selection
    2. 7.2 Configure Channel 2 and Channel 3 as a Dual Phase Buck Controller
      1. 7.2.1 Component Modifications
      2. 7.2.2 CFG/MODE Pin Selection
    3. 7.3 EVM Modification Test Setups
  9. 8Revision History

2.1 EVM Characteristics

Table 2-1 shows the evaluation module characteristics in the standard configuration and according to Section 6.

Table 2-1 EVM characteristics
ParameterTest ConditionMINTYPMAXUNIT
INPUT VOLTAGE CHARACTERISTICS
Input voltage rangeOperation318V
Start-up5V
Transient 42 V
Input current, no loadVEN1 = VEN2 = VEN3 = 5 V
IOUT1 = IOUT2 = IOUT3 = 0 A
VCH1A = 13.5 V,
VCCX = VOUT2,
VDDX = VOUT3,
CFG/MODE = tied to AGND		VIN = VCH1A = 9 V50μA
VIN = VCH1A = 12 V50μA
VIN = VCH1A = 18 V50μA
Input current shutdownVEN1 = VEN2 = VEN3 = 0 VVIN = VCH1A= 13.5 V4μA

CHANNEL 1 OUTPUT CHARACTERISITICS (Pre-boost)

Output voltage (VOUT1)6.9V

Maximum output current (IOUT1)

VCH1A > 3 V

10

A

CHANNEL 2 OUTPUT CHARACTERISITICS (SINGLE BUCK)

Output voltage (VOUT2)

5

V

Maximum output current (IOUT2)

VCH1A > 3 V

5

A

CHANNEL 3 OUTPUT CHARACTERISITICS (SINGLE BUCK)
Output voltage (VOUT3)VCH1A > 3 V

3.3

V

Maximum output current (IOUT3)

7

A

SYSTEM CHARACTERISITICS

Switching Frequency

VCH1A = 13.5 V

440

kHz

Half Load Efficiency (ηHALF)

IOUT2 = 2.5 A, IOUT3 = 3.5 A

VCH1A = 9 V

95.3

%
VCH1A = 13.5 V

94.2

%
VCH1A = 18 V

92.8

%
Full Load Efficiency (ηFULL)IOUT2 = 5 A, IOUT3 = 7 A (ADD table noteVCH1A = 9 V

94.5

%
VCH1A = 13.5 V

93.8

%
VCH1A = 18 V

92.1

%