Texas Instruments DRV591 User manual

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MAY 2003 High Performance Linear
User’s Guide
SLOU120A

IMPORTANT NOTICE
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TIdoesnotwarrantorrepresentthatanylicense, eitherexpress orimplied, isgranted underanyTIpatentright,
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does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
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Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
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Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
Thisevaluationkit being soldbyTI is intendedforuse for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
ShouldthisevaluationkitnotmeetthespecificationsindicatedintheEVMUser’sGuide,thekitmaybereturned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED,ORSTATUTORY,INCLUDING ANYWARRANTYOF MERCHANTABILITY ORFITNESS FORANY
PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products
receivedmaynotberegulatorycompliant oragency certified (FCC,UL, CE,etc.). Dueto theopen construction
oftheproduct,itistheuser’sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostatic
discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE
TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any
machine, process, or combination in which such TI products or services might be or are used.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the supply voltage range of 2.8 V to 5.5 V.
Exceeding the specified supply range may cause unexpected operation and/or irreversible
damage to the EVM. If there are questions concerning the supply range, please contact a TI
field representative prior to connecting the input power.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan
125°C. The EVM is designed to operate properly with certain components above 125°C as
long as the input and output ranges are maintained. These components include but are not
limited to linear regulators, switching transistors, pass transistors, and current sense
resistors. These types of devices can be identified using the EVM schematic located in the
EVMUser’sGuide.Whenplacingmeasurementprobesnearthesedevices duringoperation,
please be aware that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

iii
Read This First
Preface
How to Use This Manual
This document contains the following chapters:
-Chapter 1—Introduction
-Chapter 2—Operating Instructions
Related Documentation From Texas Instruments
-DRV591 data sheet (literature number SLOS389).
FCC Warning
This equipment is intended for use in a laboratory test environment only. It
generates, uses, and can radiate radio frequency energy and has not been
testedforcompliancewiththelimitsofcomputingdevicespursuanttosubpart
Jofpart15ofFCCrules,which aredesignedtoprovidereasonableprotection
against radio frequency interference. Operation of this equipment in other
environments may cause interference with radio communications, in which
case the user at his own expense will be required to take whatever measures
may be required to correct this interference.

iv

Running Title—Attribute Reference
v
Contents
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Specifications 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Operating Instructions 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Precautions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Operating Instructions List 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 DRV591VFP EVM Schematic 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 DRV591VFP EVM Bill of Materials 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 DRV591VFP EVM PCB Layers 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
2–1 Top View 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 DRV591VFP EVM Schematic Diagram 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Top Layer 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 Bottom Layer 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2–1 Typical Jumper Settings 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Fault Indicators 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 DRV591VFP EVM Bill of Materials 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi

1-1
Introduction
This chapter provides an overview of the Texas Instruments (TI) DRV591VFP
high-efficiency power driver amplifier evaluation module. It includes a list of
EVM features, a brief illustrated description of the module, and a list of EVM
specifications.
Topic Page
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Specifications 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Feature Highlights
1-2 Introduction
1.1 Feature Highlights
The DRV591VFP evaluation module includes the following features:
-PWM operation with full output filter
-High efficiency
-Small solution size
-Low supply current in active and shutdown modes
-LEDs and test points for fault monitoring
-Jumpers for selecting device options
-Easy connections for inputs, outputs, and power supply
1.2 Description
The DRV591VFP PWM power driver evaluation module is a complete power
stage solution. It consists of the TI DRV591VFP PWM power driver IC along
withafewdiscretepassivecomponentsrequiredforoperation.Italsoincludes
jumpersforconfiguringthefeaturesofthedevice,LEDsandtestpointsforfault
monitoring,andafulloutputfilterthatmaybeeasilymodified.The5-wayjacks
fortheinputs,outputs,andpowersupplyprovideforeaseofconnectiontoany
system, from an existing design to a bread-boarded prototype.
1.3 EVM Specifications
Supply voltage range, VDD 2.8 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, IDD 3.1 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1
Operating Instructions
Operating Instructions
Follow the steps in this chapter to quickly prepare the DRV591VFP EVM for
use.
Topic Page
2.1 Precautions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Operating Instructions List 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

Precautions
2-2 Operating Instructions
2.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power
connectedVDDpowerinputconnectorJ8iscorrect.Overvoltageor
reverse-polarity power applied to this terminal can damage the
evaluation module.
2.2 Operating Instructions List
Figure 2–1.Top View
23
4
6
5
7 8
Table 2–1. Typical Jumper Settings
J1 (INT/EXT)J2 (FREQ) J3 (SHUTDOWN)
ON ON ON
-Power supply
1) Ensure that all external power sources are set to OFF.
2) Connect a 2.8-V to 5.5-V power supply to J8 (VDD) and J9 (GND), taking
care to observe proper polarity.

Operating Instructions List
2-3
Operating Instructions
-Inputs and outputs
3) Connecta dc controlvoltageto J4 (IN+)rangingfrom ground toVDD.The
terminalJ5 (IN–) is held toVDD/2witharesistorvoltagedivider,as shown
in the schematic. Therefore, a dc control voltage of VDD/2 provides 0-V
output from OUT+ to OUT–.
If a different bias or offset is required, the voltage divider resistors R1 and
R2maybereplaced.ThevalueofR1andR2inparallelshouldnotexceed
1 kΩto minimize gain error due to imbalance in the impedance of the
differential input stage. Alternatively, the resistor divider may be removed
andadifferentcommonvoltageoutput(suchasfromanop-ampbufferora
power supply) may be connected to J5 (IN–).
Note:
The common mode input range of the DRV591VFP is 1.2 V to 3.8 V when
using a 5-V supply, and 1.2 V to 2.1 V when using a 3.3-V supply. Refer to
the DRV591 data sheet, TI literature number SLOS389.
4) Connect a load across J6 (OUT+) and J7 (OUT–). The polarity of the
connection depends on the operation of the dc control voltage. As the
voltage at IN+ becomes greater than the voltage at IN–, the voltage at
OUT+ increases, causing current to flow from OUT+ to OUT–. Similarly,
as the voltage at IN+ decreases lower than IN–, the voltage at OUT–
increases, causing current to flow from OUT–to OUT+.
For example, consider the load to be a TEC element and the dc control
voltage to be the output of a temperature control circuit. In this example,
as temperature increases the output of the temperature control circuit
increases. The TEC element should therefore be connected with the
anode at OUT+ and the cathode at OUT–toensure that theTEC element
cools when the temperature increases.
-Evaluation module jumpers, LEDs, and test points
5) Jumper J1 (INT/EXT) should be ON for normal operation.
When J1 is ON, the internal oscillator is used to generate the switching
outputs.WhenJ1 isOFF,anexternalTTL-compatibleclocksignalmaybe
driven into the COSC pin of the DRV591VFP. The capacitor C9 must be
removed and a wire may be soldered to the pad closest to the IC for
connecting the external clock.
6) Jumper J2 (FREQ) should be ON for normal operation.
When J2 is ON, the device is configured for 500-kHz operation.
WhenJ2isOFF,thedeviceisconfiguredfor100-kHzoperation.However,
capacitor C9 must be removed and replaced with a 1-nF capacitor for
proper operation.
7) Jumper J3 (SHUTDOWN) should be ON for normal operation. (Remove
J1 to place the DRV591VFP in shutdown mode.)
Ifanexternalshutdowncontrolsignalistobeused,itshouldbeconnected
totheright–handpinofJ1(whichisconnected to resistor R3). Thecontrol
signalmustbeTTL–compatible;alogichighprovidesnormaloperation,a
logic low places the DRV591VFP in shutdown.

DRV591VFP EVM Schematic
2-4 Operating Instructions
8) The LED D1 lights if FAULT1 is active and LED D2 lights if FAULT0 is
active.Ifexternalfaultmonitoringistobeused,testpointTP1isconnected
to FAULT1 and test point TP2 is connected to FAULT0. The pins and test
points go low when a fault is present, lighting the LEDs. The faults are
shown in the table below. Refer to the DRV591 data sheet (SLOS389) for
additional information on the fault indicators.
Table 2–2.Fault Indicators
FAULT1 FAULT0
0 0 Overcurrent
1 0 Undervoltage
0 1 Overtemperature
1 1 Normal operation
Note: 0 = LED ON (Fault) 1 = LED OFF (Normal)
-Power up
9) Verify correct voltage, input polarity, and set the external power supply to
ON. The EVM will begin operation.
2.2.1 DRV591VFP EVM Schematic
Figure 2–2.DRV591VFP EVM Schematic Diagram
AVDD
AGND (Connected to PowerPAD)
ROSC
COSC
AREF
IN+
IN–IN–
SHUTDOWN
FAULT1 FAULT0 PVDD PVDD PVDD OUT– OUT– OUT–
OUT–
PGND
PGND
PGND
PGND
PGND
PGND
OUT+
OUT+ OUT+ OUT+
PVDD PVDD PVDD
INT/EXT
FREQ
120 kΩ
C4
R8
1 kΩ
R7
1 kΩ
J8
VDD
10 µH
C8
10 µF
10 µH
C6
10 µF
C2
1 µF
J7
OUT+
L2
J6
OUT–
C7
10 µF
L1
R3
1 kΩ
D1
D2
TP1
TP2
1 µF
C9
R6
C3
1 µF
J3
R5
120 kΩ
220 pF
J4
IN+
J5
IN–
R2
120 kΩ
R1
120 kΩ
J1
J2 C1
1 µF
C5
10 µF
J9
GND
DRV591
R4
1 kΩ
C11
1 µF

DRV591VFP EVM Bill of Materials
2-5
Operating Instructions
2.2.2 DRV591VFP EVM Bill of Materials
Table 2–3.DRV591VFP EVM Bill of Materials
Reference Description Size Qty. MFG Part # Vendor/#
C1–4, C11 Capacitor, ceramic, 1 µF,
±10%, X5R, 6.3 V 0603 5 Panasonic ECJ1VB0J105K Digi-Key/ PCC1915CT-ND
C5–C8 Capacitor, ceramic, 10 µF,
±10%, X5R, 16 V 1210 4 Panasonic ECJ-4YB1C106K Digi-Key/ PCC2169CT-ND
C9 Capacitor, ceramic, 220 pF,
±10%, X7R 0603 1 Panasonic ECUV1J221KBV Digi-Key/ PCC221BVCT-ND
C10 Capacitor (not assembled)
R1, R2, R5, R6 Resistor, chip, 120 kΩ,
1/16 W, 1% 0603 4 Phycomp 9C06031A1203F KHFT Digi-Key/ 311-120KHCT-ND
R3, R4, R7, R8 Resistor, chip, 1 kΩ,
1/16 W, 1% 0603 4 Phycomp 9C06031A1001F KHFT Digi-Key/ 311-1.00KHCT-ND
D1, D2 LED, red, 2 V, 140°view
angle 0805 2 Lumex SML–LXT0805IW Digi-Key/ 67–1552–2–ND
L1, L2 Inductor, SMT, 10 µH,
0.026 mΩDCR (typical),
4.4 A max dc current
2 Sumida CDRH104R-100 Harvey King/
CDRH104R–100
L3, L4 Chip bead (not assembled) 1806 2
J1, J2, J3 Header, 2 position 2 mm 3 Norcomp 2163-2-01-P2 Digi-Key/
2163S-02-ND
Shunts 2 mm 3 3M 953170-00 Digi-Key/
953170-00
TP1, TP2 Test points 2 Farnell/240-333
IN–, IN+, VDD,
GND, OUT+,
OUT–(J5–J9)
Uninsulated binding post
with knurled thumb,
nut-grounded type
6 Johnson
Components 111-2223-001 Digi-Key/J587-ND
Standoffs 4–40 4 Digi-Key/534-1804
U1 DRV591, 32-pin Quad
Flatpack 1 TI DRV591VFP TI/DRV591VFP

DRV591VFP EVM PCB Layers
2-6 Operating Instructions
2.2.3 DRV591VFP EVM PCB Layers
Figure 2–3.Top Layer
Figure 2–4. Bottom Layer

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