DRV2700 Driver Datasheet

DRV2700 Datasheet PDF, Equivalent


Part Number

DRV2700

Description

Industrial Piezo Driver

Manufacture

etcTI

Total Page 30 Pages
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DRV2700
SLOS861B – MARCH 2015 – REVISED APRIL 2015
DRV2700 Industrial Piezo Driver With Integrated Boost Converter
1 Features
1 100-V Boost or 1-kV Flyback Configuration
• ±100-V Piezo Driver in Boost + Amplifier
Configuration
– 4 GPIO-Adjustable Gains
– Differential or Single-Ended Output
– Low-Voltage Control
– AC and DC Output Control
• 0 to 1-kV Piezo Driver in Flyback Configuration
– Low-Voltage Control
– AC and DC Output Control
• Integrated Boost or Flyback Converter
– Adjustable Current-Limit
– Integrated Power FET and Diode
• Fast Startup Time of 1.5 ms
• Wide Supply-Voltage Range of 3 to 5.5 V
• 4-mm × 4-mm × 0.9-mm VQFN package
• 1.8-V Compatible Digital Pins
• Thermal Protection
2 Applications
• Piezo Positioning Actuators
• Piezo Sounder Driver
• Piezo Inkjet Printer
• Piezo Transducers
• Piezoelectric Micropumps
3 Description
The DRV2700 device is a single-chip piezo driver
with an integrated 105-V boost switch, integrated
power diode, and integrated fully-differential amplifier.
This versatile device is capable of driving both high-
voltage and low-voltage piezoelectric loads. The input
signal can be either differential or single-ended and
AC or DC coupled. The DRV2700 device supports
four GPIO-controlled gains: 28.8 dB, 34.8 dB, 38.4
dB, and 40.7 dB.
The boost voltage is set using two external resistors.
The boost current-limit is programmable through the
R(REXT) resistor. The boost converter architecture
does not allow the demand on the supply current to
exceed the limit set by the R(REXT) resistor which
allows the user to optimize the DRV2700 circuit for a
given inductor based on the desired performance
requirements. Additionally, this boost converter is
based on a hysteretic architecture to minimize
switching losses and therefore increase efficiency.
A typical startup time of 1.5 ms makes the DRV2700
device an ideal piezo driver for coming out of sleep
quickly. Thermal overload protection prevents the
device from damage when overdriven.
Device Information(1)
DEVICE NAME
PACKAGE
BODY SIZE (NOM)
DRV2700
VQFN (20)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Boost + Amplifier Configuration
C(VDD)
PUMP
C(PUMP)
REXT
R(REXT)
EN
L1
VDD
SW
Charge
Pump
Boost
Controller
BST
C(BOOST)
R(FB1)
FB
PVDD
R(FB2)
C(IN)
IN+
IN±
C(IN)
GAIN0
GAIN1
Gain
OUT+
OUT±
GND
Thermal
Shutdown
Piezo
Element
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

DRV2700
DRV2700
SLOS861B – MARCH 2015 – REVISED APRIL 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Boost + Amplifier Configuration .......................... 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Switching Characteristics .......................................... 5
7.7 Typical characteristics............................................... 6
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes ....................................... 12
9 Application and Implementation ........................ 13
9.1 Application Information .......................................... 13
9.2 Typical Applications ................................................ 13
9.3 System Example ..................................................... 26
10 Power Supply Recommendations ..................... 27
11 Layout................................................................... 27
11.1 Layout Guidelines ................................................. 27
11.2 Layout Example .................................................... 28
12 Device and Documentation Support ................. 29
12.1 Documentation Support ........................................ 29
12.2 Trademarks ........................................................... 29
12.3 Electrostatic Discharge Caution ............................ 29
12.4 Glossary ................................................................ 29
13 Mechanical, Packaging, and Orderable
Information ........................................................... 29
5 Revision History
Changes from Revision A (March 2015) to Revision B
Page
• Changed "minimum switching frequency" to "miminum startup switching frequency" in Switching Characteristics ............. 5
Changes from Original (March 2015) to Revision A
Page
• Released full version of data sheet ....................................................................................................................................... 1
2 Submit Documentation Feedback
Product Folder Links: DRV2700
Copyright © 2015, Texas Instruments Incorporated


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DRV2700 SLOS861B – MARCH 2 015 – REVISED APRIL 2015 DRV2700 Indu strial Piezo Driver With Integrated Boo st Converter 1 Features •1 100-V Boo st or 1-kV Flyback Configuration • ± 100-V Piezo Driver in Boost + Amplifier Configuration – 4 GPIO-Adjustable Ga ins – Differential or Single-Ended Ou tput – Low-Voltage Control – AC and DC Output Control • 0 to 1-kV Piezo Driver in Flyback Configuration – Low -Voltage Control – AC and DC Output C ontrol • Integrated Boost or Flyback Converter – Adjustable Current-Limit – Integrated Power FET and Diode • Fast Startup Time of 1.5 ms • Wide Su pply-Voltage Range of 3 to 5.5 V • 4- mm × 4-mm × 0.9-mm VQFN package • 1 .8-V Compatible Digital Pins • Therma l Protection 2 Applications • Piezo P ositioning Actuators • Piezo Sounder Driver • Piezo Inkjet Printer • Pie zo Transducers • Piezoelectric Micropumps 3 Description The DRV2700 device is a single-chip piezo driver with a.
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