Texas Instruments Evaluation Module for UCC28250 Advanced PWM Controller with Pre-Bias Operation UCC28250EVM-501 UCC28250EVM-501 데이터 시트
제품 코드
UCC28250EVM-501
Test Setup
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5.3
List of Test Points
Table 2. Test Point Functions
TEST POINTS
NAME
DESCRIPTION
TP1
VIN
Input voltage positive test point, for efficiency test
TP2
PGND
Input voltage negative test point, for efficiency test
TP3
VDD
Primary-side bias voltage
TP4
SW1
Primary-side switch node (intersection of Q1 and Q2)
TP5
VG3
Primary-side Q2 gate
TP6
VG2
Primary-side Q1 gate
TP7
PGND
Primary-side power ground
TP8
VLINE
Primary-side positive input voltage terminal after input filter
TP9
GND
Primary-side signal ground
TP10
GND_S
Secondary-side ground
TP11
Vo_rpl
Output voltage ripple test point
TP12
F_SYNC
Primary-side IC RT-pin (external frequency synchronization)
TP13
SRA
Primary-side IC SRA-pin
TP14
OUTA
Primary-side IC OUTA-pin
TP15
VD_S
Secondary-side MOSFET drain pin (Q7 and Q8)
TP16
VG_S
Secondary-side MOSFET gate pin (Q7 and Q8)
J1
INPUT
Input voltage terminals
J2
Loop+
Feedback loop test point
J3
Loop-
Feedback loop test point
J4
OUTPUT
Output voltage terminals
6
Half-Bridge DC-to-DC Converter With Primary-Side Control
SLUU429B – June 2010 – Revised December 2010
© 2010, Texas Instruments Incorporated