NSD-2101 austriamicrosystems, NSD-2101 Datasheet

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NSD-2101

Manufacturer Part Number
NSD-2101
Description
Piezo Motor Driver Asic For Sql-rv Series Reduced Voltage Squiggle Rv And Utaf? Motors
Manufacturer
austriamicrosystems
Datasheet

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NSD-2101
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www.austriamicrosystems.com/NSD-2101
P r e l i m i n a r y D a t a S h e e t
N S D - 2 1 0 1
P i e z o M o t o r D r i v e r A S I C f o r S QL- RV S er ie s
R e d u c e d Vol t a g e S Q U I G G L E ® RV a n d U TA F ™ M o t o r s
1 General Description
In combination with the SQUIGGLE® RV or UTAF, the NSD-2101
provides the industry’s smallest piezo motor drive solution with direct
battery drive; no boost circuit required.
The NSD-2101 is a dedicated piezo motor driver ASIC capable of
driving a SQL-RV Series Reduced Voltage SQUIGGLE® RV motor
or UTAF motor from a single 2.3 to 5.5 VDC supply. The motor can
be controlled using a standard I²C interface.
The NSD-2101 uses proprietary control technology to dynamically
adjust motor drive frequency to maintain optimal motor performance
and minimal power consumption over wide temperature ranges and
operating conditions. Built in oscillator eliminated the need for
external master clock.
Figure 1. NSD-2101 Functional Block Diagram
C1
ADR
XPD
SDA
SCL
VCC
Power Save
VSS
I²C Interface &
Frequency
Tracking &
Registers
Control
LDO
PPTRIM
References
BandGap
VCO
V/I-
TM
Control
Test
Startup
VDD
C2
Revision 0.2
Motor Driver
Squiggle
2 Key Features
3 Applications
The NSD-2101 is ideal for SQL-RV-1.8 SQUIGGLE® RV
piezoelectric motor driver and UTAF piezoelectric motor driver.
1 x MLA
VSSP
- Wide input supply voltage: 2.3 to 5.5 VDC
- 1.8 x 1.8 mm 4 x 4 ball grid array or 4 x 4 mm 16-pin QFN
- Proprietary design optimizes power usage
- Hard power-down mode for lowest power consumption
- Idle mode via software for reduced power while preserving
VDDP
Industry’s smallest piezo motor drive solution with direct battery
drive.
Low power consumption:
Proprietary frequency tracking controls maximizes motor
performance over a range of operating and environmental
conditions
Built-in oscillator; no external clock or oscillator required
I²C interface for direct serial interface to microprocessor
On chip registers for storing driver instructions
(minimum order quantities for QFN apply)
frequency calibration
P1-1
P1-2
P2-1
P2-2
Connection to
SQUIGGLE® RV
Motor
+
-
2.3V - 5.5V
P1-1
P1-2
P2-1
P2-2
Connection to
UTAF motor
1 - 18

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NSD-2101 Summary of contents

Page 1

... The NSD-2101 is a dedicated piezo motor driver ASIC capable of driving a SQL-RV Series Reduced Voltage SQUIGGLE® RV motor or UTAF motor from a single 2.3 to 5.5 VDC supply. The motor can be controlled using a standard I² ...

Page 2

... Power Dissipation Control .................................................................................................................................................................... 8 7.3 Frequency Tracking.............................................................................................................................................................................. 9 7.4 I²C......................................................................................................................................................................................................... 9 7.5 Register Map ...................................................................................................................................................................................... 10 7.6 Control Register.................................................................................................................................................................................. 10 7.7 Period Counter ................................................................................................................................................................................... 7.8 Pulse Counter..................................................................................................................................................................................... 7.9 Pulse Width Control............................................................................................................................................................................ 12 7.10 Phase Shift ....................................................................................................................................................................................... 12 7.11 Period Offset..................................................................................................................................................................................... 12 7.12 Hybrid Speed Register ..................................................................................................................................................................... 13 8 Application Information ........................................................................................................................................................... 9 Package Drawings and Markings ........................................................................................................................................... 10 Ordering Information............................................................................................................................................................. www.austriamicrosystems.com/NSD-2101 Revision 0 ...

Page 3

... VSS 7 VDD 8 VSSP 9 VSSP 10 VDDP 11 VDDP 12 P2-2 13 P2-1 14 P1-2 15 P1-1 16 Note: SDA (Data IO) and SCL (Data clock) constitute an I²C interface. Both have open drain outputs. www.austriamicrosystems.com/NSD-2101 13 A P2-2 VDDP 12 B P2-1 VDDP 11 VSSP 10 P1-2 C VSSP 9 D P1-1 8 1.8 x 1.8 mm 4-by-4 ball grid array Pin Type Character Digital input Test mode selection input ...

Page 4

... Voltage at ADR, SDA, SCL, XPD Input current (latchup immunity) scr Electrostatic discharge ESD P Total power dissipation tot R Thermal resistance QFN16 4x4mm thja Storage temperature T strg Package body temperature T body Humidity non-condensing www.austriamicrosystems.com/NSD-2101 Electrical Characteristics on page 5 Min Typ Max Units -0 -0 -0.3 5.0 V -0.3 0 ...

Page 5

... Low level output voltage OL Capacitive load: SDA, SCL External pull-up resistor: SDA, SCL PU SCL I²C write frequency www.austriamicrosystems.com/NSD-2101 Conditions Min Supply voltage (VDD/VDDP rise time is between 2.3 10µs and 10ms. Above 5.0V only half bridge mode should be used) Driver supply (VDD/VDDP rise time is between 2.3 10µ ...

Page 6

... Current limit is valid for full bridge and half bridge configuration. Due to the dynamic behavior of the output driver the maximum current limit can not be reached under all conditions. Device can only be used for direct motor drive. 3. For this frequency range, frequency tracking is implemented. 4. Error of dead time is maximum +1 VCO clock cycle. www.austriamicrosystems.com/NSD-2101 Conditions C 50nF, ...

Page 7

... Figure 3. Motor Drive Concept (SQUIGGLE® RV Motor) VIN VIN P1-1 P1 P2-1 P2-2 Full Bridge Drive Figure 4. Motor Drive Concept (UTAF Motor) VIN VIN P1-1 P1 P2-1 P2-2 Full Bridge Drive www.austriamicrosystems.com/NSD-2101 Motor Drive Concept P1-1 VIN 0V P1-2 VIN 0V Phase Shift +90 is Forward -90 is Reverse P2-1 VIN 0V P2-2 VIN 0V Motor Drive Concept P1-1 VIN ...

Page 8

... Power dissipation saving PDS Hybrid Control for full-bridge mode. Power saving in comparison to standard full-bridge PS Power dissipation saving PDS www.austriamicrosystems.com/NSD-2101 5. Time between crossing 10% and 90% threshold of minimum VDD is measured, 10% to 90% 90% 10% tr Conditions When half-bridge mode is enabled then the output driver will switch to half-bridge drive depending on input supply down to 25% of standard full-bridge drive ...

Page 9

... Preliminary Data Sheet - 7.3 Frequency Tracking Based on the motor type, an initial drive signal period must be written to the NSD-2101. The period is specified in units of 0.04 usec (based on the nominal internal VCO frequency of 25 MHz). In the case of an SQL-RV-1.8 motor, the period may be 148 (94h) to generate a drive frequency of ~168 ...

Page 10

... X Reserved register 10h X 7.6 Control Register The control register is used to trigger frequency calibration as well as to select and enable the drive phases. Table 9. Control Register Control Flag Mask 1000 0000 0100 0000 0010 0000 0001 0000 www.austriamicrosystems.com/NSD-2101 Data Byte PS[1] PS[0] CN[1] CN[ DS[1] DS[0] ...

Page 11

... The same is valid for power down mode. Bit 6 in the pulse counter (d) is used to set the direction of motor motion. Table 11. Pulse Counter Values Pulse Counter Value XXXX X000 0000 0000 XXXX X100 0000 0000 XXXX X111 1111 1111 www.austriamicrosystems.com/NSD-2101 Abbr Default CN[1] 0 CN[0] 0 ...

Page 12

... This offset is only activated when frequency tracking is stopped. An offset has been provided as some types of motors operate better at slightly below mechanical resonance. Table 14 provides an example for 25MHz master clock and 200kHz nominal driver frequency. Period offset is only supposed to lower drive frequency. Table 14. Period Offset Register Values Period Offset Register 0000 0000 0000 0001 0000 0010 www.austriamicrosystems.com/NSD-2101 Table 12 Typ Unit 49.6/50.4 % 0 ...

Page 13

... The value of the register can vary from 0 (half bridge) to 128 (full bridge). The average voltage can be calculated in the following manner. Where: VDD is the supply voltage Table 15. Hybrid Speed Register Values Hybrid Speed Register 0000 0000 0010 0000 0110 0000 1000 0000 www.austriamicrosystems.com/NSD-2101 Typ Unit -5 ...

Page 14

... NSD-2101 Preliminary Data Sheet - Application Information The NSD-2101 is designed to drive one SQL-RV-1.8 SQUIGGLE® RV motor or one UTAF motor. Recommended external components are as follows: Table 16. External Components Component Manufacturer C1 470nF Cap 4.0V TAIYO-YUDEN C2 4.7µ ...

Page 15

... All dimensions are in millimeters, angles are in degrees. 3. Dimension b applies to metallized terminal and is measured between 0.25mm and 0.30mm from terminal tip. Dimension L1 represents terminal full back from package edge up to 0.1mm is acceptable. 4. Coplanarity applies to the exposed heat slug as well as the terminal. 5. Radius on terminal is optional. www.austriamicrosystems.com/NSD-2101 ...

Page 16

... NSD-2101 Preliminary Data Sheet - Figure 10. 4-by-4 BGA (1.8x1.8mm) Package Drawings Figure 11. Recommended PCB Layout www.austriamicrosystems.com/NSD-2101 C2 VDD P2-2 P2-1 VSS P1-2 C1 P1-1 Denotes via to ground plane Revision 0 ...

Page 17

... SQUIGGLE® RV Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at http://www.austriamicrosystems.com/distributor www.austriamicrosystems.com/NSD-2101 Table 17. Description Delivery Form Tape & Reel http://www ...

Page 18

... Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact Contact Information New Scale Technologies, Inc. 121 Victor Heights Parkway Victor, NY 14564 Tel: +1 585 924 4450 Fax: +1 585 924 4468 sales@newscaletech.com www.newscaletech.com www.austriamicrosystems.com/NSD-2101 Revision 0 ...

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