Texas Instruments TPS7A3301 -36V, -1A, Ultra-low Noise Linear Regulator Evaluation Module TPS7A3301EVM-061 TPS7A3301EVM-061 데이터 시트
제품 코드
TPS7A3301EVM-061
V
IN
V
OUT
R
1
R
2
C
IN
10
F
m
C
OUT
10
F
m
C
BYP
10 nF
C
NR/SS
10 nF
IN
EN
NR/SS
TPS7A3301
OUT
FB
GND
B0478-01
2
1
OUT
FB
OUT
1
2
R = R ÷ ((V
/V
) 1),
where
V
/ (R + R )
5 μA
-
³
Z
1
BYP
F
1/ (2
R
C
)
=
´ p ´
´
C001
Test Results
Figure 1. TPS7A3301 LDO Schematic Showing Adjustment Resistors
(1)
Once the resistor values have been calculated, the new resistors can be installed appropriately in the
correct place using the PCB and schematic diagrams of
correct place using the PCB and schematic diagrams of
5 through
Suggestion: When recalculating the resistor values for a particular desired output voltage, change only the
R2 value in order to maintain the frequency-domain zero formed by R1 and C
R2 value in order to maintain the frequency-domain zero formed by R1 and C
BYP
in accord with
.
(2)
For additional information on adjustable operation, see the TPS7A3301 data sheet (
5
Test Results
This section provides typical performance waveforms for the TPS7A3301EVM-061 printed circuit board.
5.1
Turnon Sequence
shows the hard turnon characteristic where
–
VIN is
–
18 V, EN (C1, yellow) is switched on to
–
18
V and the output drives a 1-A load (C4, green). The output (C3, blue) shows a fairly monotonic rise time of
approximately 800 ms.
approximately 800 ms.
Figure 2. Turnon Sequence
3
SLVU602
–
November 2011
TPS7A3301EVM-061
Copyright
©
2011, Texas Instruments Incorporated