Texas Instruments TPS92001 Evaluation Boards TPS92001EVM-628 TPS92001EVM-628 사용자 설명서
제품 코드
TPS92001EVM-628
I
EXAS
T
NSTRUMENTS
AMP Meter 1
AMP Meter 2
L.E.D Load
Volt Meter 1
Volt Meter 2
+
-
+
-
Dimmer
Max
Min
AC Source
7.10
7.2
Test Setup
5
Test Setup
WARNING
High voltages that may cause injury exist on this evaluation
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended. The use of isolated equipment is highly recommended.
module (EVM). Please ensure all safety procedures are followed
when working on this EVM. Never leave a powered EVM
unattended. The use of isolated equipment is highly recommended.
5.1
Test Equipment
Voltage Source: 105 V
RMS
to 135 V
RMS
isolated AC source capable of at least 20 W.
Multimeters: Two voltmeters for measuring up to 35 V
DC
each and two ammeters for up to 1 A each.
Output Load: 9 LEDs in series (VF = 3.4 V at 330 mA per LED)
Oscilloscope: 4 channel 100 MHz with high-voltage probe rated for at least 600 V.
Recommended Wire Gauge: 18 AWG not more than two feet long.
5.2
TPS92001EVM-645 Recommended Test Setup
Figure 2. Recommended Test Set Up
5.3
List of Test Points
Table 2. Test Point Functions
TEST POINTS
NAME
DESCRIPTION
TP1
LED +
LED output
TP2
LED ¬-
LED return point
TP3
CS
Feedback pin of TPS92001
TP4
CT
Clock signal
TP5
SW
Buck switch node
TP6
Bulk-
Rectified AC negative input
TP7
Bulk +
Rectified AC positive input
TP8
Line
AC line input
TP9
Neutral
AC neutral input
4
Dimmable LED Lighting Driver Controller
SLUU897 – March 2012
Copyright © 2012, Texas Instruments Incorporated