SUPERTEX HV7355

Supertex inc.
HV7355
Eight Channel, High Speed, Unipolar,
Ultrasound Pulser 1.5A 150V
Features
►►
►►
►►
►►
►►
►►
►►
►►
►►
HVCMOS technology for high performance
High density integrated ultrasound transmitter
0 to +150V output voltage
±1.5A source and sink current (min.)
±300mA current in CW mode
Up to 18MHz operating frequency
Matched delay times
Built-in gate driver floating voltage regulator
2.5 to 3.3V CMOS logic interface
The Supertex HV7355 is an eight-channel, unipolar, high voltage,
high-speed pulse generator. It is designed for medical ultrasound
applications. This high voltage and high speed integrated circuit can
also be used for other piezoelectric, capacitive or MEMS sensors in
ultrasonic nondestructive detection and sonar ranger applications.
The HV7355 consists of a controller logic interface circuit, level
translators, MOSFET gate drivers and high current P-channel and
N-channel MOSFETs as the output stage for each channel.
The output stages of each channel are designed to provide peak
output currents over ±1.5A for pulsing, when MC = 1, with up to 150V
swings. When MC = 0, all the output stages drop the peak current
to ±500mA for low-voltage CW mode operation to save power. This
direct coupling topology of the gate driver not only saves one high
voltage capacitor per channel, but also makes the PCB layout easier.
Application
►►
►►
►►
►►
General Description
Portable medical ultrasound imaging
Piezoelectric transducer drivers
NDT ultrasound transmission
Pulse waveform generator
Typical Application Circuit
+5.0 to 150V
+5.0V
+3.3V
VDD
AVDD
VLL
VPP
CPF
LR
VPF
VSS
EN
MC
PWR
VDD
CWD
VPP
LT
VPF
IN0
VDD
Q0
TX0
X0
VDD
LT
RGND
+3.3V
Logic
VDD
VPP
VPP
LT
VPF
IN7
VDD
Q7
Q[7:0]
SET
LE
Data Latch
CS
SCK
Shift Reg.
Q7
SDO
TX7
VDD
X7
LT
RGND
RGND
SUB
D0
SDI
VSUB
GND
VSS
-5.0V
Doc.# DSFP-HV7355
D070813
Supertex inc.
www.supertex.com
HV7355
Pin Configuration
Ordering Information
56
Part Number
Package Options
Packing
HV7355K6-G
56-Lead QFN (8x8)
250/Tray
HV7355K6-G M937
56-Lead QFN (8x8)
2000/Reel
1
-G denotes a lead (Pb)-free / RoHS compliant package
Absolute Maximum Ratings
Parameter
Value
GND, RGND and VSUB
0V
VLL, Positive logic supply
-0.5V to +7.0V
VSS, Negative level translator and LR supply
+0.5V to -7.0V
VDD, Positive logic and level translator supply
56-Lead QFN
(top view)
-0.5V to +7.0V
VPP, High voltage positive supply
Package Marking
-0.5V to +160V
( VPP -VTXx) Voltage
-0.5V to +160V
All logic input PINX, NINX and EN voltages
-0.5V to +7.0V
(VTXx - RGND) Voltage
-0.5V to +160V
Operating temperature
-40°C to 125°C
Storage temperature
-65°C to 150°C
L = Lot Number
YY = Year Sealed
WW = Week Sealed
A = Assembler ID
C = Country of Origin
= “Green” Packaging
HV7355K6
LLLLLLLLL
YYWW
AAA CCC
Package may or may not include the following marks: Si or
56-Lead QFN
Absolute Maximum Ratings are those values beyond which damage to the device may
occur. Functional operation under these conditions is not implied. Continuous operation
of the device at the absolute rating level may affect device reliability. All voltages are
referenced to device ground.
Typical Thermal Resistance
Package
θja
56-Lead QFN (8.0x8.0 )
Power-Up Sequence
21 C/W
O
Power-Down Sequence
Step
Description
Step
Description
1
VSS
1
EN & logic signal low
2
VLL with logic signal low
3
VPP
3
VDD
4
VDD
4
VPP
5
VLL
5
EN & logic signal go to high
6
VSS
Note:
Powering up/down in any arbitrary sequence will not cause any damage to the device. The powering up/down sequence is only recommended in
order to minimize possible inrush current.
Truth Table (MC = X)
Drive Mode Control Table
Logic Inputs
Output
EN
Q[7:0]
IN0~7
TX0~7
1
1111,1111
0
GND
1
1111,1111
1
VPP
1
0
X
GND
0
X
X
HiZ
Doc.# DSFP-HV7355
D070813
MC
ISC
(A)
RonP
RonN
0
0.50
18
13
1
1.6
8.0
3.0
Note:
VPP = +150V, VDD = +5.0 V, VLL = +3.3V, VSS = -5.0V, VSUB = 0V
2
Supertex inc.
www.supertex.com
HV7355
Operating Supply Voltages and Current (Eight Active Channels)
(Operating conditions, unless otherwise specified, VLL = +3.3V, VADD = VDD = +5.0V, VSS = -5.0V ,VPP = +150V, TA = 25°C)
Sym
Parameter
Min
Typ
Max
Units Conditions
VLL
Logic voltage reference
2.37
3.30
3.47
V
---
VDD
Internal voltage supply
4.5
5.0
5.5
V
---
VPP
Positive gate driver supply
VDD
-
+150
V
---
VSS
Negative low voltage supply
-5.5
-5.0
-4.5
V
---
VPF
Gate driver floating voltage
-
5.0
-
V
---
ILL
VLL Current EN = Low
-
2.0
10
μA
---
IDDQ
VDD Current EN = Low
-
50
150
μA
f = 0MHz
IDDEN
VDD Current EN = High
-
1.0
4.0
mA
f = 0MHz
IDDEN
VDD Current MC = High
-
160
-
mA
IDDENCW
VDD Current MC = Low
-
12
-
mA
f = 5.0MHz, continuous
no loads
ISSQ
VSS Current EN = Low
-
5.0
20
μA
---
ISSEN
VSS Current EN = High
-
1.0
4.0
mA
f = 0MHz
ISSEN
VSS Current MC = High
-
95
-
mA
ISSENCW
VSS Current MC = Low
-
50
-
mA
f = 5.0MHz, continuous
no loads
IPPQ
VPP Current EN = Low
-
2.0
10
μA
---
IPPEN
VPP Current EN = High
-
200
450
μA
f = 0MHz
IPPEN
VPP Current MC = High
-
370
-
mA
IPPENCW
VPP Current MC = Low
-
300
-
mA
f = 5.0MHz, continuous
no loads
Under Voltage and Over Temperature Protection
Sym
Parameter
Min
Typ
Max
Units Conditions
VUVDD
VDD threshold
3.4
-
4.4
V
(Internal only)
VUVLL
VLL threshold
-
1.7
-
V
(Internal only)
VUVPF
VPP - VPF threshold
2.5
-
3.8
V
(Internal only)
Logic Inputs
(Operating conditions, unless otherwise specified, VLL = +3.3V, VADD = VDD = +5.0V, VSS = -5.0V ,VPP = +150V, TA = 25°C)
Sym
Parameter
Min
Typ
Max
Units Conditions
VIH
Input logic high voltage
(VLL - 0.4)
-
VLL
V
---
VIL
Input logic low voltage
0
-
0.4
V
---
IIH
Input logic high current
-
-
1.0
μA
---
IIL
Input logic low current
-1.0
-
-
μA
---
CIN
Input logic capacitance
-
-
5.0
pF
---
Doc.# DSFP-HV7355
D070813
3
Supertex inc.
www.supertex.com
HV7355
Electrical Characteristics
(Operating conditions, unless otherwise specified, VLL = +3.3V, VADD = VDD = +5.0V, VSS = -5.0V ,VPP = +150V, TA = 25°C)
P-Channel MOSFET Output, TX0~7
Sym
Parameter
Min
Typ
Max
Units Conditions
IOUT
Output saturation current
1.4
1.6
-
A
MC = 1
RON
Channel resistance
-
8.0
-
Ω
100mA
IOUT
Output saturation current
0.5
-
-
A
MC = 0
RON
Channel resistance
-
18
-
Ω
100mA
Parameter
Min
Typ
Max
IOUT
Output saturation current
1.5
1.7
-
A
MC = 1
RON
Channel resistance
-
3.0
-
Ω
ISD = 100mA
IOUT
Output saturation current
0.5
-
-
A
MC = 0
RON
Channel resistance
-
22
-
Ω
100mA
N-Channel MOSFET Output, TX0~7
Sym
Units Conditions
AC Electrical Characteristics
(Operating conditions, unless otherwise specified, VLL = +3.3V, VADD = VDD = +5.0V, VSS = -5.0V ,VPP = +150V, TA = 25°C)
Sym
Min
Typ
Max
Input data rise/fall max time
-
-
10
ns
---
tr
Output rise time
-
24
-
ns
tf
Output fall time
-
24
-
ns
330pF//2.5kΩ load
see timing test diagram
Output frequency range
-
-
18
MHz
tEN-ON
Initial enable time
-
150
200
μs
2μF on each CPF pin
to 90% of VCPF
tEN-OFF
tinrf
fOUT
Parameter
Units Conditions
100Ω resistor load, VPP = +90V
Output disable time
-
2.0
5.0
μs
at 5.0MHz CW
tdr
Delay time on inputs rise
-
5.0
-
ns
tdf
Delay time on inputs fall
-
5.0
-
ns
tdm
Delay on mode change
-
50
70
ns
VPP = 25V
1.0Ω resistor load, 50% to 50%
see timing test diagram
Delay time matching
-
± 2.0
-
ns
P to N, channel to channel
Delay jitter on rise or fall
-
15
-
ps
---
ΔtDELAY
tj
Serial Data Interface Timing Characteristics
(Operating conditions, unless otherwise specified, VLL = +3.3V, VADD = VDD = +5.0V, VSS = -5.0V ,VPP = +150V, TA = 25°C)
Sym
Parameter
Min
Typ
Max
Units Conditions
fSCK
Serial clock max. frequency
25
-
-
MHz
t1
SDI valid to SCK setup time
0
2.0
-
ns
t2
SDI valid to SCK hold time
4.0
-
-
ns
t3
SCK high time
9.0
-
-
ns
t4
SCK low time
9.0
-
-
ns
t5
CS pulse width
9.0
-
-
ns
t6
SCK high to CS high
7.0
-
-
ns
t7
CS low to SCK high
7.0
-
-
ns
t8
SDO delay from SCK rise edge
-
6.5
-
ns
SDO with 100pF to GND
t9
CS high to SCK rise edge
7.0
-
-
ns
t10
SCK high to LE low
7.0
-
-
ns
All from/to 50% rise or fall edges
(See timing diagram)
Doc.# DSFP-HV7355
D070813
4
All from/to 50% rise or fall edges
(See timing diagram)
Supertex inc.
www.supertex.com
HV7355
Output Timing Test Diagram
+5.0 to 150V
+5.0V
+3.3V
VDD
AVDD
VLL
VPP
CPF
LR
VPF
VSS
EN
MC
VDD
PWR
CWD
VPP
LT
IN0
Q0
TX0
VPF
VDD
VDD
R1
LT
50%
RGND
+3.3V
Logic
VDD
INX
tdfx
tdrx
VPP
VPP
IOUT
LT
50%
VPF
IN7
VDD
Q7
TX7
VDD
TXX
LT
Q[7:0]
SET
LE
Data Latch
CS
SCK
Shift Reg.
90%
0A
10%
tr
tf
RGND
RGND
Q7
SDO
SUB
D0
SDI
VSUB
GND
VSS
-5.0V
Serial Data Interface Timing Diagram
t1
SCK
t2
1
t3
t4
2
t6
3
7
8
t9
SDI
t5
t7
CS
t8
SDO
t10
LE
Doc.# DSFP-HV7355
D070813
5
Supertex inc.
www.supertex.com
HV7355
Pin Description
Pin
Name
1
IN0
2
IN1
3
IN2
4
IN3
5
IN4
6
IN5
7
IN6
8
IN7
9
CS
Serial interface enable, active low
10
SDI
Serial shift register data input, MSB(D7) first, LSB(D0) last
11
LE
Latch enable, active low
12
SCK
Serial shift register clock
13
SDO
Serial shift register data output
14
SET
Set latch data Q[7:0] = 1, regardless the shift register inputs or LE, active high
15
MC
Output current mode control pin, see Drive Mode Control Table
16
VLL
Logic Hi voltage reference input (+3.3V)
17
VSS
Negative power supply(-5.0V)
18
CPF
Gate driver floating voltage decoupling capacitor to VPP
19
VPP
20
VPP
21
VPP
22
VPP
23
VDD
24
RGND
25
RGND
26
RGND
27
RGND
Doc.# DSFP-HV7355
D070813
Description
Input control for channels 0~7
Positive high voltage power supply (+150V)
Positive voltage supply for gate drivers (+5.0V)
Output return ground, 0V, RGND pins carry high current, must connect to load transducer
ground
6
Supertex inc.
www.supertex.com
HV7355
Pin Description (cont.)
Pin
Name
28
TX7
29
TX7
30
TX6
31
TX6
32
TX5
33
TX5
34
TX4
35
TX4
36
TX3
37
TX3
38
TX2
39
TX2
40
TX1
41
TX1
42
TX0
43
TX0
44
RGND
45
RGND
46
RGND
47
RGND
48
VDD
49
VPP
50
VPP
51
VPP
52
VPP
53
CPF
Gate driver floating voltage decoupling capacitor to VPP
54
GND
Logic input reference ground, 0V
55
AVDD
Positive internal voltage supply (+5.0V)
56
EN
VSUB (Thermal Pad)
Doc.# DSFP-HV7355
D070813
Description
Output for channel 0~7
Output return ground, 0V, RGND pins carry high current, must connect to load transducer
ground
Positive voltage supply for gate drivers (+5.0V)
Positive high voltage power supply (+150V)
Chip power enable, active high
Substrate bottom is internally connected to the central thermal pad on the bottom of package. It
must be connected to GND (0V) externally
7
Supertex inc.
www.supertex.com
HV7355
56-Lead QFN Package Outline (K6)
8.00x8.00mm body, 1.00mm height (max), 0.50mm pitch
D2
D
56
1
56
1
Note 1
(Index Area
D/2 x E/2)
Note 1
(Index Area
D/2 x E/2)
e
E
E2
b
View B
Top View
Bottom View
Note 3
θ
A
A3
L
Seating
Plane
L1
Note 2
Side View
A1
View B
Notes:
1. A Pin 1 identifier must be located in the index area indicated. The Pin 1 identifier can be: a molded mark/identifier; an embedded metal marker; or
a printed indicator.
2. Depending on the method of manufacturing, a maximum of 0.15mm pullback (L1) may be present.
3. The inner tip of the lead may be either rounded or square.
Symbol
Dimension
(mm)
A
A1
MIN
0.80
0.00
NOM
0.90
0.02
MAX
1.00
0.05
A3
0.20
REF
b
D
D2
E
E2
0.18
7.85*
2.75
7.85*
2.75
0.25
8.00
5.70
8.00
5.70
0.30
8.15*
6.70
8.15*
6.70
†
e
†
0.50
BSC
L
L1
θ
0.30
0.00
0O
0.40
-
-
0.50
0.15
14O
JEDEC Registration MO-220, Variation VLLD-2, Issue K, June 2006.
* This dimension is not specified in the JEDEC drawing.
† This dimension differs from the JEDEC drawing.
Drawings are not to scale.
Supertex Doc.#: DSPD-56QFNK68X8P050, Version A031010.
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline
information go to http://www.supertex.com/packaging.html.)
Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives
an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability
to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and
specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)
Supertex inc.
©2013 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited.
Doc.# DSFP-HV7355
D070813
8
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888
www.supertex.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Supertex:
HV7355K6-G