HV746K6-G Supertex, HV746K6-G Datasheet

MOSFET & Power Driver ICs DUAL HISPD -85V 2.5A ULTRASOUND PULSER

HV746K6-G

Manufacturer Part Number
HV746K6-G
Description
MOSFET & Power Driver ICs DUAL HISPD -85V 2.5A ULTRASOUND PULSER
Manufacturer
Supertex
Datasheet

Specifications of HV746K6-G

Mounting Style
SMD/SMT
Package / Case
QFN-48
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Features
Applications
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
±2.5A source and sink current in PW mode
±800mA source and sink current in CW mode
Up to 20MHz operation frequency
Matched delay times
1.2V to 5.0V CMOS logic interface
Over temperature sensing
Under voltage protections
Built-in output drain bleed resistors
Portable medical ultrasound imaging
Piezoelectric transducer drivers
NDT ultrasound equipment
Pulse waveform generator
Logic
Supertex inc.
MC0
PIN1
NIN1
OTP
MC1
EN
C1
+1.8 to 3.3V
GREF
EN_PWR
±75V, 2.5A Ultrasound Pulser
VLL
Translator
Translator
1235 Bordeaux Drive, Sunnyvale, CA 94089
Level
Level
VSS
+9.0V
Dual, High Speed,
C2
VDD
1 of 2 Channels
HV746
General Description
The Supertex HV746 is a dual-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 other piezoelectric, capacitive or MEMS sensor in
ultrasonic nondestructive detection and sonar ranger applications.
The HV746 consists of controller logic interface circuit, level
translators, MOSFET gate drives and high current power P-channel
and N-channel MOSFETs as the output stage for each channel. A 2-
bit mode control is provided that allows the maximum output current
to be reduced for power saving.
The output stages of each channel are designed to provide peak
output currents over ±3.6A for pulsing, when in mode 4, with up to
±75V swings. When in mode 1, all the output stages drop the peak
current to ±800mA for low-voltage CW mode operation to save 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
and V
saves two high voltage capacitors per channel, but also makes the
PCB layout easier.
C3
NN
P-Driver
N-Driver
. This direct coupling topology of the gate drivers not only
+75V
VSUB
SUB
VNF
V
NN
V
+9.0V
PP
-9.0V
C7
VPF
C4
Tel: 408-222-8888
VNN
0 to +75V
0 to -75V
RN1
VPP
RP1
C6
RGND
C5
www.supertex.com
RGND
TXP1
TXN1
D1
D2
HV746
HV
X1
OUT
1
PP

Related parts for HV746K6-G

HV746K6-G Summary of contents

Page 1

... Supertex inc. Dual, High Speed, General Description The Supertex HV746 is a dual-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 other piezoelectric, capacitive or MEMS sensor in ultrasonic nondestructive detection and sonar ranger applications ...

Page 2

... V with logic signal low – Logic control signals Supertex inc. 48-Lead QFN 0.50mm pitch HV746K6-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

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

Page 4

... 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 +9.0V Min Typ 2.5 3.6 - 4.0 - 200* Min Typ 2 ...

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 DD SUB Level P-Driver Translator Level N-Driver Translator 1of n Channels GREF VSS V 50% NINx t dfp t drp I t OUT drn 50% 0A TXNx 0A ● ...

Page 6

... Input logic control of high voltage output P-FET of channel ON, Low = OFF. 10 NIN2 Input logic control of high voltage output N-FET of channel ON, Low = OFF. 11 VSS Power supply return (0V). 12 VDD Positive internal voltage supply (+9.0V). 13 OTP Over temperature protection output, open N-FET drain, active low if IC temperature >110°C. Supertex inc. PIN NIN ...

Page 7

... GREF Logic low reference, logic ground (0V). 48 VLL Logic Hi voltage reference input (+3.3V). Thermal Pad Substrate bottom is internally connected to the central thermal pad on the bottom of package. It (VSUB) must be connected to VSUB, the most positive potential of the IC externally. 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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