OPA454 Datasheet, PDF (27/36 Pages) Texas Instruments – High-Voltage (100V), High-Current (50mA) OPERATIONAL AMPLIFIERS, G = 1 Stable

OPA454
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10kW
190kW
10kW
+120V
V+
OPA454
A₁
V-
V+
(+97V, -98V)
OPA454
A₃
V-
SBOS391 – DECEMBER 2007
+100V
+100V
10kW
100kW
100kW
R_LOAD
7.5kW
V_LOAD
(±195V, 390V_PP)
100kW
+120V
V+
OPA454
A₄
V-
200kW
100kW
(-98V, +97V)
V+
OPA454
A₆
V-
10kW
10kW
V_IN
100kW
100kW
10kW
V+
OPA454
A₂
V-
-100V
100kW
100kW
V+
OPA454
A₅
V-
-100V
-100V
-100V
Figure 79. Output Voltage Boost With ±195V (390V_PP) Across Bridge-Tied Load (6 Op Amps, see
Figure 80 and Figure 81)
200
150
100
50
0
-50
-100
-150
-200
V_LOAD
Time (20ms/div)
Figure 80. 390V_PP Across 7.5kΩ Load
20kHz, Uses 6 OPA454s, 100V Supplies
200
150
100
50
0
-50
-100
-150
-200
V_IN
Time (10ms/div)
6
V_OUT
4
2
0
-2
-4
-6
Figure 81. 7.5kΩ Load
G = +20, 6 OPA454s, 100V Supplies
(Note SR of 34V/µs, which is significantly higher
than the specified 13V/µs due to tracking of the
power-supply voltage)
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