User’s Guide
MAY 2003
High Performance Linear
SLOU142A
IMPORTANT NOTICE
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Copyright 2003, Texas Instruments Incorporated
EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
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compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
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discharge.
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Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
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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.
Applying loads outside of the specified output range may result in unintended operation and/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.
During normal operation, some circuit components may have case temperatures greater than
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
EVM User’s Guide. When placing measurement probes near these devices during operation,
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
How to Use This Manual
This document contains the following chapters:
- Chapter 1—Introduction
- Chapter 2—Operating Instructions
Related Documentation From Texas Instruments
- DRV593, DRV594 data sheet (SLOS401).
FCC Warning
This equipment is for use in a laboratory test environment only. It generates
and uses radio frequency energy. It may also radiate such energy. The
equipment has not been tested for compliance with the limits of computing
devices pursuant to subpart J of part 15 of FCC rules, which are designed to
provide reasonable protection against radio frequency interference.
Operation of the EVM in other environments may cause interference with radio
communications, in which case users at their own expense must take
whatever measures are required to correct this interference.
Read This First
v
Running Title—Attribute Reference
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1
Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3
EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-2
1-2
1-2
2
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Operating Instructions List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 DRV593/594 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 DRV593/594 EVM Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 DRV593/594 EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-2
2-2
2-4
2-5
2-6
2−1
2−2
2−3
2−4
2−5
DRV593/594 EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRV593 Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRV594 Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRV593 and DRV594 Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DRV593 and DRV594 Thermal Plane Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
2-6
2-6
2-7
2-7
2−1
2−2
2−3
vi
Typical Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Fault Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
DRV593/594 EVM Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Chapter 1
This chapter provides an overview of the Texas Instruments (TI) DRV593/594
high-efficiency power driver 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
Introduction
1-1
Feature Highlights
1.1 Feature Highlights
The DRV593/594 evaluation module includes the following features:
- PWM operation with only one output filter required
- 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 DRV593/594 PWM power driver evaluation module is a complete power
stage solution. It consists of the TI DRV593/594 PWM power driver IC, along
with a few discrete passive components required for operation. It also includes
jumpers for configuring the features of the device, LEDs and test points for fault
monitoring, and an output filter that is easily modified. The 5-way jacks for the
inputs, outputs, and power supply provide ease of connection to any 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
1-2
Introduction
Chapter 2
Follow the steps in this chapter to quickly prepare the DRV593/594 EVM for
use.
Topic
Page
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2
Operating Instructions List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Operating Instructions
2-1
Precautions
2.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power
connected VDD power input connector J8 is correct. Overvoltage or
reverse-polarity power applied to this terminal can damage the
evaluation module.
2.2 Operating Instructions List (See Figures 2−2 and 2−3.)
Table 2−1. Typical Jumper Settings
J1(FREQ)
J2 (INT/EXT)
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.
- Inputs and outputs
3) Connect a dc control voltage to J4 (IN+), ranging from ground to VDD. The
terminal J5 (IN−) is held to VDD/2 with a resistor voltage divider, as shown
in the schematic. Therefore, a dc control voltage of VDD/2 provides 0-V
output from PWM to H/C.
If a different bias or offset is required, replace the voltage divider resistors
R7 and R8. To minimize gain error due to imbalance in the impedance of
the differential input stage, the value of R7 and R8 in parallel should not
exceed 1 kΩ. Alternatively, the resistor divider may be removed and a
different common voltage output (such as from an op-amp buffer or a
power supply) may be connected to J5 (IN−).
Note:
The common mode input range of the DRV593 and DRV594 are 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 DRV593/594 data sheet, SLOS401.
4) Connect a load across J6 (PWM) and J7 (H/C). The polarity of the
connection depends on the operation of the dc control voltage. As the
voltge at IN+ becomes greater than the voltage at IN−, the voltage at PWM
increases and the H/C voltage remains at ground. The differential voltage
created causes current to flow from PWM to H/C. Similarly, as the voltage
at IN+ decreases lower than IN−, the voltage at H/C goes to VDD and the
PWM voltage decreases. The differential voltage increases in the
opposite direction, causing current to flow from H/C to PWM.
2-2
Operating Instructions
Operating Instructions List
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 PWM and the cathode at H/C to ensure that the TEC element
cools when the temperature increases.
- Evaluation module jumpers, LEDs, and test points
5) Jumper J1 (FREQ) should be ON for normal operation.
When J1 is ON, the device is configured for 500-kHz operation.
When J1 is OFF, the device is configured for 100-kHz operation. However,
capacitor C9 must be removed and replaced with a 1-nF capacitor for
proper operation.
6) Jumper J2 (INT/EXT) should be ON for normal operation.
When J2 is ON, the internal oscillator is used to generate the switching
outputs. When J2 is OFF, an external TTL-compatible clock signal can be
driven into the COSC pins of DRV593 and DRV594. In that case, the
capacitor C9 is removed and a wire is soldered to the pad closest to the IC
for connecting the external clock.
7) Jumper J3 (SHUTDOWN) should be ON for normal operation. (Remove
J3 to place the DRV593 and DRV594 in shutdown mode.)
If an external shutdown control signal is to be used, it should be connected
to the right-hand pin of J3 (which is connected to resistor R5). The control
signal must be TTL-compatible; a logic high provides normal operation, a
logic low places the DRV593 and DRV594 in shutdown.
8) The LED D1 lights if FAULT1 is active, and LED D2 lights if FAULT0 is
active. If external fault monitoring is to be used, test point TP1 is connected
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 DRV593/594 data sheet (SLOS401)
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, verify input polarity, and set the external power
supply to ON. The EVM begins operation.
Operating Instructions
2-3
DRV593/594 EVM Schematic
2.2.1
DRV593/594 EVM Schematic
Figure 2−1. DRV593/594 EVM Schematic Diagram
J8
VDD
J9
GND
C5
10 µF
J2
R2
R1
PWM
IN−
SHUTDOWN
PGND
R5
120 kΩ
C8
10 µF
H/C
TP1
TP2
D1
PWM
PVDD
PVDD
PGND
H/C
R7
2 kΩ
J6
PWM
PGND
IN+
H/C
J3
AREF
C7
10 µF
PGND
DRV593
DRV594
H/C
R8
2 kΩ
PGND
COSC
PVDD
1 µF
PGND
PVDD
C4
PWM
ROSC
FAULT0
C9 220 pF
L1
10 µH
AGND (Connected to PowerPAD)
FAULT1
R6 120 kΩ
J5
IN−
C11
1 µF
FREQ
AVDD
INT/EXT
C3
1 µF
J4
IN+
PWM
C1
1 µF
120 kΩ
PVDD
120 kΩ
PVDD
J1
J7
H/C
R4
1 kΩ
R3
1 kΩ
C2
1 µF
D2
2-4
Operating Instructions
DRV593/594 EVM Bill of Materials
2.2.2
DRV593/594 EVM Bill of Materials
Table 2−3. DRV593/594 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
Capacitor, ceramic, 22 µF,
±10%, X5R, 16 V
1206
1
Panasonic
ECJ-4YB1C106K
Digi-Key/
PCC2169CT-ND
C6
Capacitor, ceramic (not
assembled)
0603
1
C7
Omitted
C8
Capacitor, ceramic, 10 µF,
±10%, X5R, 16 V
1210
1
Panasonic
ECJ-4YB1C106K
Digi-Key
PCC2169CT-ND
C9
Capacitor, ceramic, 220 pF,
±10%, X7R
0603
1
Panasonic
ECUV1J221KBV
Digi-Key/
PCC221BVCT-ND
R1, R2, R5, R6
Resistor, chip, 120 kΩ,
1/16 W, 1%
0603
4
Phycomp
9C06031A1203F
KHFT
Digi-Key/
311-120KHCT-ND
R3, R4
Resistor, chip, 1 kΩ,
1/16 W, 1%
0603
2
Phycomp
9C06031A1001F
KHFT
Digi-Key/
311-1.00KHCT-ND
R7, R8
Resistor, chip, 2 kΩ,
1/16 W, 1%
0603
2
Phycomp
9C06031A2001F
KHFT
Digi-Key/
311-2.00KHCT-ND
D1, D2
LED, red, 2 V, 140° view
angle
0805
2
Lumex
SML−LXT0805IW
Digi-Key/
67−1552−2−ND
L1
Inductor, SMT, 10 µH,
0.026 mΩ DCR (typical),
4.4 A max dc current
1
Sumida
CDRH104R-100
Harvey King/
CDRH104R−100
L2
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
IN−, IN+, VDD,
GND, OUT+,
OUT− (J5−J9)
Uninsulated binding post
with knurled thumb,
nut-grounded type
6
Standoffs
U1
DRV593/DRV594, 32-pin
Quad Flatpack
4−40
Farnell/240-333
Johnson
Components
111-2223-001
4
1
Digi-Key/J587-ND
Digi-Key/534-1804
TI
DRV593/
DRV594VFP
TI/DRV593/
DRV594VFP
Operating Instructions
2-5
DRV593/594 EVM PCB Layers
2.2.3
DRV593/594 EVM PCB Layers
Figure 2−2. DRV593 Top Layer
Figure 2−3. DRV594 Top Layer
2-6
Operating Instructions
DRV593/594 EVM PCB Layers
Figure 2−4. DRV593 and DRV594 Bottom Layer
Figure 2−5. DRV593 and DRV594 Thermal Plane Layer
Operating Instructions
2-7
2-8
Operating Instructions
