Texas Instruments Evaluation Board for LM3150-750 kHz - SIMPLE SWITCHER® CONTROLLER, 42V Synchronous Step-Down LM3150-75 LM3150-750EVAL 데이터 시트
제품 코드
LM3150-750EVAL
EN
SS
HG
SW
L
LM3150
FB
VCC
PGND
SGND
BST
ILIM
LG
C
BYP
C
SS
V
IN
VIN
R
ON
RON
C
OUT
V
OUT
C
BST
C
VCC
V
IN
R
LIM
R
FB2
R
FB1
M2
M1
C
EN
C
FF
C
IN
Evaluation Board Schematic
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Evaluation Board Schematic
Figure 1. Evaluation Board Schematic
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Powering and Loading Considerations
Read this entire section prior to attempting to power the evaluation board.
3.1
Quick Setup Procedure
Step 1: Set the input power supply current limit to 10A. Turn off the input power supply. Connect the
power supply to the V
power supply to the V
IN
terminals.
Step 2: Connect the load, with up to 10A capability, to the V
O
terminals. Positive connection to V
O
and the
negative connection to GND.
Step 3: The EN pin should be left open for normal operation.
Step 4: Set the input source voltage to 12V and the load to 0.1A. The load voltage should be in regulation
with a nominal 3.3V output.
with a nominal 3.3V output.
Step 5: Slowly increase the load current while monitoring the load voltage at the V
O
and GND terminals. It
should remain in regulation with a nominal 3.3V output as the load is increased up to 10A.
Step 6: Slowly sweep the input source voltage over the operating voltage range corresponding to selected
evaluation board as indicated in the introduction section. The load voltage should remain in regulation with
a nominal 3.3V output.
evaluation board as indicated in the introduction section. The load voltage should remain in regulation with
a nominal 3.3V output.
Step 7: The shutdown function can be verified by applying 0V to the EN pin.
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AN-1900 LM3150 Evaluation Boards
SNVA371D – September 2008 – Revised May 2013
Copyright © 2008–2013, Texas Instruments Incorporated