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DRV11873
SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
DRV11873 12-V, 3-Phase, Sensorless BLDC Motor Driver
1 Features
3
•
•
DRV11873 is a three-phase, sensorless motor driver
with integrated power MOSFETs with drive current
capability up to 1.5-A continuous and 2-A peak.
DRV11873 is specifically designed for fan motor drive
applications with low noise and low external
component count. DRV11873 has built-in overcurrent
protection with no external current sense resistor
needed. The synchronous rectification mode of
operation achieves increased efficiency for motor
driver applications. DRV11873 outputs FG and RD to
indicate motor status with open-drain output. A 150°
sensorless BEMF control scheme is implemented for
a three-phase motor. DRV11873 is available in the
thermally-efficient 16-pin TSSOP package. The
operation temperature is specified from –40°C to
125°C.
1
•
•
•
•
•
•
•
•
•
•
•
•
Input Voltage Range: 5 to 16 V
Six Integrated MOSFETs With 1.5-A Continuous
Output Current
Total Driver H + L RDSON 450 mΩ
Sensorless Proprietary BMEF Control Scheme
150° Commutation
Synchronous Rectification PWM Operation
FG and RD Open-Drain Output
5-V LDO for External Use up to 20 mA
PWMIN Input from 7 to 100 kHz
Overcurrent Protection With Adjustable Limit
Through External Resistor
Lock Detection
Voltage Surge Protection
UVLO
Thermal Shutdown
Device Information(1)
PART NUMBER
DRV11873
PACKAGE
HTSSOP (16)
BODY SIZE (NOM)
4.40 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
•
•
•
Description
Appliance Cooling Fan
Desktop Cooling Fan
Server Cooling Fan
4 Simplified Schematic
PWMIN
FS
1
16
FG
2
15
FR
RD
3
14
CS
VCP
4
13
COM
CPP
5
12
V5
CPN
6
11
VCC
7
10
8
9
W
GND
U
V
M
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.
DRV11873
SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
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Table of Contents
1
2
3
4
5
6
7
8
Features ..................................................................
Applications ...........................................................
Description .............................................................
Simplified Schematic.............................................
Revision History.....................................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
1
2
3
4
7.1
7.2
7.3
7.4
7.5
7.6
4
4
4
5
6
7
Absolute Maximum Ratings ......................................
Handling Ratings.......................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Typical Characteristics ..............................................
Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 11
9
Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Application ................................................. 13
10 Power Supply Recommendations ..................... 15
11 Layout................................................................... 15
11.1 Layout Guidelines ................................................. 15
11.2 Layout Example .................................................... 15
12 Device and Documentation Support ................. 16
12.1 Trademarks ........................................................... 16
12.2 Electrostatic Discharge Caution ............................ 16
12.3 Glossary ................................................................ 16
13 Mechanical, Packaging, and Orderable
Information ........................................................... 16
5 Revision History
Changes from Original (November 2012) to Revision A
Page
•
Added Handling Ratings table, Feature Description section, Device Functional Modes, Application and
Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation
Support section, and Mechanical, Packaging, and Orderable Information section ............................................................... 1
•
Changed ƒPWM minimum value ............................................................................................................................................... 6
2
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SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
6 Pin Configuration and Functions
PWP Package
16 Pins
(Top View)
FS
1
16
PWMIN
FG
2
15
FR
RD
3
14
CS
VCP
4
13
COM
PowerPAD
CPP
5
12
V5
CPN
6
11
VCC
W
7
10
U
GND
8
9
V
Pin Functions
PIN
NAME
NO.
I/O (1)
DESCRIPTION
FS
1
I
Motor parameter adjustment pin. Pull low for lower-speed motor and pull high for high-speed motor.
FG
2
O
Frequency generator output. The output period is equal to 6 electrical states (FG).
RD
3
O
In the lock condition, RD output is high through a pullup resistor to VCC or 5 V.
VCP
4
O
Charge pump output
CPP
5
O
Charge pump conversion terminal
CPN
6
O
Charge pump conversion terminal
W
7
O
Phase W output
GND
8
—
Ground pin
V
9
O
Phase V output
U
10
O
Phase U output
VCC
11
I
Input voltage for motor and chip supply voltage
V5
12
O
5-V regulator output
COM
13
I
Motor common terminal input. If the motor does not have a common wire, see Application and
Implementation for more details.
CS
14
I
Overcurrent threshold set-up pin. A resistor set-up current limit is connected between this pin and ground.
The voltage across the resistor compares with the voltage converted from the bottom MOSFETs' current. If
MOSFETs' current is high, the part goes into the overcurrent protection mode by turning off the top PWM
MOSFET and keeping the bottom MOSFET on.
Ilimit(A) = 6600 / RCS (Ω); Equation valid range: 500 mA < Ilimit < 2000 mA
FR
15
I
Set high for reverse rotation. Set low or floating for forward rotation.
PWMIN
16
I
PWM input pin. The PWM input signal is converted to a fixed switching frequency on the MOSFET driver.
(1)
I = input, O = output, N/A = not available
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SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
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7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature (unless otherwise noted)
Input voltage (1)
Output voltage (1)
TJ
(1)
MIN
MAX
VCC
–0.3
20
CS
–0.3
3.6
PWMIN, FS, FR
–0.3
6
GND
–0.3
0.3
COM
–1
20
U, V, W
–1
20
FG, RD
–0.3
20
VCP
–0.3
25
CPN
–0.3
20
CPP
–0.3
25
V5
–0.3
6
Operating junction temperature
–40
125
UNIT
V
V
°C
Voltage values are with respect to the network ground terminal unless otherwise noted.
7.2 Handling Ratings
Tstg
Storage temperature range
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins
V(ESD)
(1)
(2)
Electrostatic
discharge
(1)
MIN
MAX
UNIT
–55
150
°C
–4000
4000
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins (2)
–1000
1000
Machine model (MM)
–200
200
V
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
Supply voltage
Voltage range
TJ
4
VCC
MIN
MAX
5
16
U, V, W
–0.7
17
COM
–0.1
17
FG, RD
–0.1
16
PGND, GND
–0.1
0.1
VCP
–0.1
22
CPP
–0.1
22
CPN
–0.1
16
V5
–0.1
5.5
PWMIN, FR, FS
–0.1
5.5
Operating junction temperature
–40
125
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UNIT
V
V
V
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7.4 Thermal Information
DRV11873
THERMAL METRIC (1)
PWP
UNIT
16 PINS
RθJA
Junction-to-ambient thermal resistance
39.4
RθJC(top)
Junction-to-case (top) thermal resistance
30.3
RθJB
Junction-to-board thermal resistance
25.6
ψJT
Junction-to-top characterization parameter
0.5
ψJB
Junction-to-board characterization parameter
10.2
RθJC(bot)
Junction-to-case (bottom) thermal resistance
3.6
(1)
°C/W
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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7.5 Electrical Characteristics
over recommended operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
IVCC
Supply current
TA = 25°C; PWM = VCC; VCC = 12 V
2.7
5
mA
VVUVLO-th_r
UVLO threshold voltage
Rise threshold, TA = 25°C
4.3
4.6
VUVLO-th_f
UVLO threshold voltage
Fall threshold, TA = 25°C
3.9
4.1
VUVLO-thhys
UVLO threshold voltage
hysteresis
TA = 25°C
100
200
300
mV
0.45
0.6
Ω
UVLO
V
V
INTEGRATED MOSFET
Series resistance (H + L)
TA = 25°C; VCC = 12 V; VCP = 19 V;
IOUT = 1.5 A
VPWM-IH
High-level input voltage
VCC ≥ 4.5 V
VPWM-IL
Low-level input voltage
VCC ≥ 4.5 V
ƒPWM
PWM input frequency
7
IPWM-SOURCE
PWM source current
35
RDSON
PWM
2.7
V
50
0.8
V
100
kHz
65
µA
FG
IFG-SINK
FG pin sink current
VFG = 0.3 V
5
IFG-short
FG pin short current limit
VFG = 12 V
IRD-SINK
RD pin sink current
VRD = 0.3 V
IRD-short
RD pin short current limit
VRD = 12 V
VFR-IH
High-level input voltage
VCC ≥ 4.5 V
VFR-IL
Low-level input voltage
VCC ≥ 4.5 V
VFS-th
FS set threshold voltage
VCC ≥ 4.5 V
2.3
V5
5-V LDO voltage
VCC = 12 V
4.75
IV5
5-V LDO load current
VCC = 12 V
mA
20
25
20
25
mA
RD
5
mA
mA
FR and FS
2.3
V
0.8
V
0.8
V
5.25
V
V5
5
20
mA
LOCK PROTECTION
tLOCK-ON
Lock detect time
tLOCK-OFF
Lock release time
FS = 0
0.875
1.25
1.625
FS = 1
0.437
0.625
0.812
FS = 0
4.375
6.25
8.125
FS = 1
2.187
3.125
4.06
1.7
2
2.3
s
s
CURRENT LIMIT
Current limit
CS pin to GND resistor = 3.3 kΩ
A
THERMAL SHUTDOWN
TSDN
6
Shutdown temperature threshold
Shutdown temperature
Hysteresis
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160
10
°C
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7.6 Typical Characteristics
Input voltage = 12 V
t = 20 ms/div
PWM duty = 100%
FS = 1
Input voltage = 12 V
t = 40 ms/div
PWM duty = 100%
FS = 1
Input voltage = 12 V
t = 800 µs/div
Figure 3. Normal Operation at 100% Duty
Input voltage = 12 V
t = 1 s/div
PWM duty = 100%
FS = 1
Figure 2. Start Up at 10% Duty
Figure 1. Start Up at 100% Duty
Input voltage = 12 V
t = 800 µs/div
PWM duty = 10%
PWM duty = 50%
FS = 1
Figure 4. Normal Operation at 50% Duty
FS = 1
Input voltage = 12 V
t = 20 ms/div
Figure 5. Lock Protection
PWM duty switch from 100% to 20%
FS = 1
Figure 6. AVS Operation
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Typical Characteristics (continued)
25000
1600
1400
20000
Speed (rpm)
SPeed (rpm)
1200
15000
10000
1000
800
600
400
5000
200
0
0
0
20
40
60
PWM (%)
80
100
120
0
20
40
60
80
100
120
PWM (%)
Figure 7. Fast Motor RPM vs Duty, FS = 1
Figure 8. Slow Motor RPM vs Duty, FS = 0
30000
1800
1600
25000
1400
1200
Speed/ (pm)
Speed (rpm)
20000
15000
10000
1000
800
600
400
5000
200
0
0
0
5
10
VCC (V)
15
0
20
5.2
5.2
5.15
5.15
5.1
5.1
5.05
5.05
5
4.95
5
4.9
4.9
4.85
4.8
4.8
4.75
4.75
15
20
0
5
10
15
20
25
30
I load (mA)
Figure 11. 5-V LDO Line Regulation
8
20
4.95
4.85
10
VCC (V)
15
Figure 10. Slow Motor RPM vs Voltage, FS = 0
5.25
V5Reg (V)
V5Reg (V)
Figure 9. Fast Motor RPM vs Voltage, FS = 1
5
10
VCC (V)
5.25
0
5
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Figure 12. 5-V LDO Load Regulation
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8 Detailed Description
8.1 Overview
DRV11873 is a three-phase, sensorless motor driver with integrated power MOSFETs with drive current
capability up to 1.5-A continuous and 2-A peak. It is specifically designed for fan motor drive applications with
low noise and low external component count. DRV11873 has built-in overcurrent protection with no external
current sense resistor needed. The synchronous rectification mode of operation achieves increased efficiency for
motor driver applications. A 5-V LDO is available to provide up to 20 mA to an external load. DRV11873 outputs
FG and RD to indicate motor status with open-drain output. A 150° sensorless BEMF control scheme was
implemented for a three-phase motor. DRV11873 can fit a wide range of fan motors with the FS pin selection
function. Motor speed can be controlled by adjusting VCC or providing a PWM input. Voltage surge protection
scheme prevents the input VCC capacitor from overcharge during motor braking mode. DRV11873 has multiple
built-in protection blocks including UVLO, overcurrent protection, lock protection, and thermal shutdown
protection.
8.2 Functional Block Diagram
FG
GND
COM
U
V
W
PWM
Lock
Detection
Phase Current
Sense
Phase to
COM
Comparator
Ilimit
COMP
CS
VREF
VCC
UVLO
Bandgap
and
UVLO
VCC
FS
VREF
V
Predriver
VCP
GND
U
VCC
Predriver
Core Logic
GND
GND
W
Predriver
Thermal
detection
GND
FR
VCC
U
V
W
RD
OSC
VCC
AVS
VCP
VCP
GND
Charge Pump
GND
V5
VCC
CPP
CPN
5V LDO
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8.3 Feature Description
8.3.1 Speed Control
DRV11873 can control motor speed through either the PWMIN or VCC pin. Motor speed increases with higher
PWMIN duty cycle or VCC input voltage. The curve of motor speed (RPM) vs PWMIN duty cycle or VCC input
voltage is close to linear in most cases. However, motor characteristics affect the linearity of this speed curve.
DRV11873 can operate at low VCC input voltage ≥ 4.1 V. The PWMIN pin is pulled up to V5 internally and the
frequency range can vary from 7 to 100 kHz. The motor driver MOSFETs operate at a constant switching
frequency of 125 kHz when the FS pin is pulled high and 62.5 kHz when the FS pin is pulled low. With this high
switching frequency, DRV11873 can eliminate audible noise and reduce the ripple of VCC input voltage and
current.
8.3.2 Frequency Generator
The FG output is a 50% duty square wave output in the normal operation condition. Its frequency represents the
motor speed and phase information. The FG pin is an open-drain output. An external pullup resistor is needed to
connect any external system. During the start up, the FG output remains at high impedance until the motor
speed reaches a certain level and BEMF is detected. If FG is not used, this pin can be left floating. The FG pin
can be tied to either V5 or VCC through a pullup resistor. Normally, the pullup resistor value can be 100 kΩ or
higher. During lock protection, the FG output remains high until the lockout protection is dismissed and restart is
completed. A current limit function is built in for the FG pin which prevents the open-drain MOSFET from damage
if VCC or V5 is accidentally connected to the FG pin. To calculate RPM based on FG frequency, refer to
Equation 1.
(FG ? 60)
RPM =
pole pairs
where
•
FG is in hertz (Hz)
(1)
8.3.3 FS Setting
DRV11873 can fit a wide range of fan motors by setting the FS pin. For high speed fan motors with low motor
winding resistance and low inductance, the FS pin should be pulled high. For low speed fan motors with high
motor winding resistance and high inductance, the FS pin should be pulled low. Through FS pin selection,
DRV11873 can be used for wide applications from low-speed refrigerator cooling fans to high-speed server
cooling fans. FS status can only be set during device power up.
8.3.4 Lock Protection and RD Output
If the motor is blocked or stopped by an external force, the lock protection will be triggered after detection time.
During lock detection time, the circuit monitors the FG signal. If the FG output does not change state during the
lock detection time, the lock protection will stop driving the motor. After lock release time, DRV11873 resumes
driving the motor. If the lock condition is still present, DRV11873 proceeds with the next lock protection cycle
until the lock condition is removed. With this lock protection, the motor and device do not get overheated or
damaged. A different FS setting determines a different lock detection and lock release time. See the Electrical
Characteristics for the different lock detection and release times.
The RD pin is an open-drain output which can be tied to either V5 or VCC through a pullup resistor. Normally, the
pullup resistor value can be 100 kΩ or higher. During the lock protection condition, the RD output remains high
until the lock protection is dismissed and restart is completed. A current limit function is built in for the RD pin
which prevents the open-drain MOSFET from damage if VCC or V5 is accidentally connected to the RD pin.
8.3.5 Reverse Spin Control FR
DRV11873 has an FR pin to set the motor for forward or reverse spin. During DRV11873 power up, FR status is
set. During normal operation, the spin direction of the motor does not change if the FR status is changed. The
FR status can be reset if the PWMIN is pulled low; if FS is high, PWM must be pulled low for 300 µs, and if FS is
low, PWM must be low for 600 µs. After being pulled down for the appropriate time, the FR status resets upon
the PWM rising edge.
10
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Feature Description (continued)
8.3.6 5-V LDO
DRV11873 has a built-in 5-V LDO which can output a 20-mA load current. It can provide 5-V bias voltage for
external use. TI recommends a 2.2-µF ceramic capacitor to connect closely on the PCB layout between the V5
pin and ground.
8.3.7 Overcurrent Protection
DRV11873 can adjust overcurrent through the external resistor connected to the CS pin and ground. Without
using an external current sense resistor, DRV11873 senses the current through the power MOSFET. Therefore,
no power loss occurs during the current sensing. This current sense architecture improves the system efficiency.
Shorting the CS pin to ground disables overcurrent protection. During overcurrent protection, DRV11873 only
limits the current to the motor and it does not shut down the operation. The overcurrent threshold can be set by
the value of the external resistor through Equation 2.
6600
I (A) =
RCS (W)
(2)
During motor start up, the overcurrent level is increased to 1.5 times the value set by RCS. If the overcurrent
protection is triggered during the start up sequence, the motor will fail to start.
8.3.8 UVLO
DRV11873 has a built-in UVLO function block. The hysteresis of the UVLO threshold is 200 mV. The device is
locked out when VCC reaches 4.1 V and woken up at 4.3 V.
8.3.9 Thermal Shutdown
DRV11873 has a built-in thermal shutdown function, which shuts down the device when the junction temperature
is over 160°C and resumes operating when the junction temperature drops back to 150°C.
8.3.10 Anti-Voltage Surge (AVS)
The DRV11873 has a protection feature to prevent any energy from returning to the power supply when the
motor is braked. This feature, AVS, protects the device as well as any other device from allowing VCC from
increasing. AVS works when the motor is braked to a lower speed and when the motor is stopped.
8.4 Device Functional Modes
8.4.1 Startup
At startup, commutation logic starts to drive the motor with one phase high, one phase low, and the third shut off.
If a zero-cross is detected on the shut off phase, commutation logic advances to the next step; the same phase
high, the shut off phase goes low, and the low phase is shut off. Initially, the BEMF is not strong enough to
detect the zero crossings, at this very initial stage the commutation switches automatically until the BEMF is large
enough to read. In startup mode, 100% duty cycle is applied regardless of PWM input. After the commutation
logic receives 4 continuous successful zero-crossings, it switches to normal operation.
In certain cases, the motor may have initial speed when the device attempts to startup the motor again. When
this occurs, the commutation logic jumps over the startup process and goes to normal operation directly.
8.4.2 Closed Loop Control
After the motor is started successfully, the start up control switches to steady state operation. In steady state
control, the motor is commutated 150°. This is an advanced trapezoidal method that allows the device to drive
the phases gradually to the maximum current and gradually to 0 at commutation.
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Device Functional Modes (continued)
8.4.3 AVS Protection
When the device is commanded to decelerate or stop the motor, in order to protect the IC and the system, the
DRV11873 has AVS protection. This function keeps the voltage supply, VCC, from surging above the nominal
value. To do this, the device monitors the current flow in the MOSFETs and is able to sense when the surging
starts to occur. The AVS function controls the current, not allowing it to charge back to VCC so that there is no
voltage surging.
12
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9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
DRV11873 only requires five external components. The device needs a 10-µF or higher ceramic capacitor
connected to VCC and ground for decoupling. During layout, the strategy of ground copper pour is very important
to enhance the thermal performance. For two or more layers, use eight thermal vias. Refer to Layout Example for
an example of the PCB layout. For high current motors, place three Schottky diodes between phases U, V, W,
and ground. Each diode anode terminal must be connected to ground and the cathode terminal must be
connected to either U, V, or W. If there is no COM pin on the motor, one can be simulated. Use three resistors
connected in a wye formation, one connected to U, one to V, and one to W. Connect the resistor ends opposite
of the phases together. This center point is COM. To find the proper resistor value, start with a value of 10 kΩ
and continue to decrease by 1 kΩ until the motor runs properly.
9.2 Typical Application
100 kΩ
100 kΩ
1
16
FG
2
15
FR
RD
3
14
CS
VCP
4
13
COM
CPP
5
12
V5
CPN
6
11
VCC
7
10
8
9
3.3 kΩ
2.2 µF
0.1 µF
0.1 µF
PWMIN
FS
W
U
10 µF
GND
V
M
Figure 13. Typical Application Schematic
9.2.1 Design Requirements
Table 1. Design Parameters
MIN
Motor voltage
TYP
5
VCC capacitor
Place as close to the pin as possible
Operating current
Running with normal load at rated speed
Absolute max current
During startup and locked motor condition
MAX
UNIT
16
10
1.5
A
2
A
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Product Folder Links: DRV11873
V
µF
13
DRV11873
SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
www.ti.com
9.2.2 Detailed Design Procedure
1. Refer to the Design Requirements and ensure the system meets the recommended application range.
– Ensure the VCC level is in between 5 and 16 V
– Verify the motor needs no more than 1.5 A during runtime
2. Follow the application and Power Supply Recommendations when constructing the schematic.
– If the motor is high current/ high speed, use three Schottky diodes between the phases and ground.
– Make sure there is adequate capacitance on VCC, V5, VCP, CPP, and CPN.
– Size the resistor on CS according to the details given in feature description.
– Use a pull-up on FG and RD.
– If the motor doesn’t have a common pin, create one using the method listed in Application Information.
3. Build the hardware according to the Layout Guidelines.
– Place the supply capacitors as close to the pins as possible.
– Route the U, V, W, and VCC traces to handle the allowed current.
– Ensure GND connections are made with the pin and thermal PAD.
– Use vias on the thermal pad to dissipate heat away from the IC.
4. Test the system with the application's motor to verify proper operation.
9.2.3 Application Curves
FG
Phase Current
RD
Phase Current
Phase Voltage
Phase Voltage
Figure 15. Lock Detection
Figure 14. Startup Waveforms
Phase Current
Supply Voltage
Phase Voltage
Figure 16. AVS Protection
14
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Product Folder Links: DRV11873
DRV11873
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SLWS237A – NOVEMBER 2012 – REVISED NOVEMBER 2014
10 Power Supply Recommendations
The DRV11873 is designed to operate from an input voltage supply, VCC, range between 5 and 16 V. The user
must place a 10-μF ceramic capacitor rated for VCC as close as possible to the VCC and GND pin. If the power
supply ripple is more than 200 mV, in addition to the local decoupling capacitors, a bulk capacitance is required
and must be sized according to the application requirements. If the bulk capacitance is implemented in the
application, the user can reduce the value of the local ceramic capacitor to 1 μF.
11 Layout
11.1 Layout Guidelines
•
•
•
•
•
•
Place VCC, GND, U, V, and W pins with thick traces because high current passes through these traces.
Place the 10-μF capacitor between VCC and GND, and as close to the VCC and GND pins as possible.
Place the capacitor between CPP and CPN, and as close to the CPP and CPN pins as possible.
Place the capacitor between V5 and GND as close to the V5 pin as possible.
Connect the GND under the thermal pad.
Keep the thermal pad connection as large as possible, both on the bottom side and top side. It should be one
piece of copper without any gaps.
11.2 Layout Example
COM
FS
PWMIN
FG
FR
RD
CS
VCP
COM
CPP
V5
100 kO
3.3kO
100 kO
0.1uF
10 uF
0.1 uF
CPN
VCC
W
U
GND
V
VCC
U
W
V
Figure 17. Layout Example Schematic
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DRV11873
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12 Device and Documentation Support
12.1 Trademarks
All trademarks are the property of their respective owners.
12.2 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
12.3 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
13 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
16
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Product Folder Links: DRV11873
PACKAGE OPTION ADDENDUM
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10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
DRV11873PWPR
ACTIVE
HTSSOP
PWP
16
2000
RoHS & Green
NIPDAU
Level-2-260C-1 YEAR
-40 to 85
11873
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
