HV748K6-G Supertex, HV748K6-G Datasheet

MOSFET & Power Driver ICs Quad High Speed 1.25A Pulser

HV748K6-G

Manufacturer Part Number
HV748K6-G
Description
MOSFET & Power Driver ICs Quad High Speed 1.25A Pulser
Manufacturer
Supertex
Datasheet

Specifications of HV748K6-G

Mounting Style
SMD/SMT
Package / Case
QFN-48
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Features
Application
Typical Application Circuit
Supertex inc.
+1.8 to 3.3V
HVCMOS technology for high performance
High density integration ultrasound transmitter
0 to ±75V output voltage
±1.25A source and sink current in pulse mode
±400mA source and sink current in CW mode
Up to 20MHz operating frequency
Matched delay times
1.2V to 5.0V CMOS logic interface
Built-in output drain bleed resistors
Portable medical ultrasound imaging
Piezoelectric transducer drivers
NDT ultrasound transmission
Pulse waveform generator
Logic
Supertex inc.
PIN1
NIN1
MC0
MC1
OTP
EN
Four-Channel, High Speed, ±75V 1.25A
C1
+1.8 to 3.3V
GREF
EN_PWR
VLL
1235 Bordeaux Drive, Sunnyvale, CA 94089
Translator
Translator
VDD
VSS
Level
Level
+9.0V
Ultrasound Pulser
1 of 4 Channels
C2
HV748
General Description
The Supertex HV748 is a four-channel, monolithic, high voltage,
high speed pulse generator. It is designed for portable medical
ultrasound applications. This high voltage and high speed
integrated circuit can also be used for piezoelectric, capacitive or
MEMS sensing in ultrasonic nondestructive detection and sonar
ranger applications.
The HV748 consists of a controller logic interface circuit, level
translators, MOSFET gate drives and high power 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 ±1.8A for pulsing, when in mode 4, with up
to ±75 volt swings. When in mode 1, all the output stages drop
the peak current to ±400mA for low-voltage CW mode operation
to decrease the power consumption of the IC. The P and N type
of power FETs gate drivers are supplied by two floating 9.0VDC
power supplies reference to V
topology of the gate drivers not only eliminates two high voltage
capacitors per channel, but also makes the PCB layout easier.
C3
P-Driver
N-Driver
+75V
VSUB
SUB
VNF
V
NN
V
+9.0V
PP
-9.0V
C7
VPF
Tel: 408-222-8888
C4
VNN
0 to -75V
0 to +75V
VPP
RN1
RP1
PP
and V
C6
C5
www.supertex.com
TXP1
RGND
TXN1
RGND
NN
. This direct coupling
D1
D2
HV748
HV
X1
OUT
1

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HV748K6-G Summary of contents

Page 1

... GREF Supertex inc. Ultrasound Pulser General Description The Supertex HV748 is a four-channel, monolithic, high voltage, high speed pulse generator designed for portable medical ultrasound applications. This high voltage and high speed integrated circuit can also be used for piezoelectric, capacitive or MEMS sensing in ultrasonic nondestructive detection and sonar ranger applications ...

Page 2

... Logic control signals Supertex inc. 48-Lead QFN 7.00x7.00mm body 1.00mm height (max) 0.50mm pitch HV748K6-G Value 0V -0.5V to +7.0V -0.5V to +14V -0.5V to +14V -0.5V to +14V +170V -0.5V to +85V +0.5V to –85V -0.5V to +7.0V -0.5V to +7.0V +170V +170V +170V +170V -40°C to 125°C -65°C to 150°C 29° ...

Page 3

... UVDD threshold UVLL threshold UVVF OTP flag output low voltage OL_OTP Max. open drain output I current OTP T Over-temperature threshold OTP T OTP output reset hysteresis HYS Supertex inc +3.3V +9.0V Min Typ Max 1.2 1.8 to 3.3 5.0 8.0 9 -12) (V -9. +8.0) (V +9.0) (V +12 ...

Page 4

... Enable time EN t Disable time DIS t Delay time on inputs rise dr t Delay time on inputs fall df Δt Delay time matching DELAY t Delay on mode change dm t Delay jitter on rise or fall j * Guaranteed by design. Supertex inc +3.3V +9V Min Typ Max 1. 100* - Min Typ Max 1 ...

Page 5

... Switch AC Test Timing Diagram NINx PINx Output V OTP EN EN_PWR MC0 MC1 PIN1 NIN1 PINx TXPx Supertex inc. 90 10 SUB SUB Level P-Driver Translator Level N-Driver Translator 1of n Channels REF V 50% NINx t dfp t drp I t OUT drn 50% 0A TXNx 0A 1235 Bordeaux Drive, Sunnyvale, CA 94089 ...

Page 6

... MC1 Output current mode control pins, see Drive Mode Control Table. 15 MC0 Substrate of the IC, Substrate bottom is internally connected to the central thermal pad on Thermal Pad 16 the bottom of package. (VSUB) It must be connected to VSUB, the most positive potential of the IC externally. Supertex inc. PIN NIN ...

Page 7

... Thermal Pad 45 the bottom of package. (VSUB) It must be connected to VSUB, the most positive potential of the IC externally Chip power enable Hi = on, Low = off. 47 GREF Logic Low reference, logic ground (0V). 48 VLL Logic Hi voltage reference input (+3.3V). Supertex inc 1235 Bordeaux Drive, Sunnyvale, CA 94089 ...

Page 8

... This dimension is not specified in the JEDEC drawing. † This dimension differs from the JEDEC drawing. Drawings are not to scale. Supertex Doc.#: DSPD-48QFNK67X7P050, Version C041009. (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.) 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 Supertex inc ...

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