Sonoscape S30 - High-Voltage Board

19
Service Manual
3 Principle Descriptions
3.2.3 High-Voltage Board
High-voltage board provides various of power supplies for the ultrasound system. The mains
supply (including +5V and +12V) is transformed by voltage booster, DC-DC conversion and LDO
conversed circuit to the desired voltage, such as -12V, +3.3V, +2.5V, +90V, -90V.
_
_
+3.3V
HV_DAT
HV_SCLK
HV FS
VOUT
VOUT
CW MODE
HV_ON
VOUT
+HV (CW)
-HV (CW)
+50V
-50V
TLV5624CD
CD74HCT4053
OPA548FK
(2pcs)
AD8676
(2pcs)
-HV (not CW)
+HV (not CW)
960KHz
To
240KHz
+12V
+12V
VOUT
+12V
VOUT
VOUT
+12V
+12V
240KP0
240KP1
240KP2
240KP3
-50V +50V
+12V
+2V
+3.3V
+75V
-75V
-12V
+HV
-HV
+VFL
-VFL
+5VA
-5V
LTC1871
LTC1871
PH0808T240
LTC1871
VP5-0083
VP3-0138
VP3-0055R
TPS76801
TPS76801
TPS76801
LM8991S
Figure 3-6 High-Voltage Board Diagram