Tripath Technology, Inc. – Preliminary Technical Information
TPS4100
FOUR CHANNEL BRIDGED OUTPUT POWER STAGE
Revision 2.5 - February 2005
GENERAL DESCRIPTION
The TPS4100 is a 4 channel bridged (16 power transistors) output power stage. The TPS4100
accepts 5V CMOS logic signals from a Class-T processor, such as TCD6001, to create a high
fidelity 4 channel audio amplifier. The TPS4100 has been designed specifically for automotive head
unit applications operating on a single 10-26V supply.
APPLICATIONS
FEATURES
Automotive Head Units and Trunk
Amplifiers
DVD Receivers
Multimedia Speaker Systems
BENEFITS
4-channel output stage – with integrated
driver and FETs - in a single 32-pin SSIP
package
Low external component count
Single-supply operation
Four H-Bridge outputs
High Efficiency
High Power @25.0V
100W
sat. sq. wave
@ 4Ω
High Efficiency
88% @ 100W 4Ω
AM “Low EMI” mode with connection to
appropriate Class-T controller
Mates seamlessly with TCD6001 Digital Input
Class-T controller
Mute and Stand-By function
Protection Modes:
Output Short to VPP and Ground
Output Short across Load
Load Dump Protection
Over-/Under-Voltage Protection
Over-current Protection
Over-temperature Protection
Fortuitous Open Ground
1
TPS4100 – KL/Rev. 2.5/02.05
Tripath Technology, Inc. – Preliminary Technical Information
Absolute Maximum Ratings
(Notes 1, 2)
SYMBOL
VPP
VPP
MAX
VIN
RANGE
T
STORE
I
R
Tj
P
D
ESD
ESD
Supply Voltage (VPP)
Peak Supply Voltage (t<50ms)
Voltage Range for Input Section Pins (Note 2)
Inputs (Pins 1-11)
Storage Temperature Range
Repetitive Peak Output Current
Maximum Junction Temperature
Total Power Dissipation (Tcase = 70ºC)
ESD Susceptibility - Human Body Model (Note 3)
ESD Susceptibility – Machine Model (Note 4)
PARAMETER
Value
33
60
-0.5 to 5.5
-55 to +150
12
150
80
2k
200
UNITS
V
V
V
ºC
A
ºC
W
V
V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
See the table below for Operating Conditions.
Note 2: The input section pins (pins 1-11) should not be connected to voltages over 5.5V with respect to pins 13 and 14
(AGND). Please note that pin 12 is an output and can be damaged if a voltage is forced externally.
Note 3: Human body model, 100pF discharged through a 1.5KΩ resistor.
Note 4: Machine model, 220pF – 240pF discharged through all pins.
Operating Conditions
(Note 5)
SYMBOL
VPP
T
A
Supply Voltage (Note 5)
Operating Free Air Temperature Range
PARAMETER
MIN.
10
-40
TYP.
14.4
25
MAX.
26
85
UNITS
V
ºC
Note 5: Recommended Operating Conditions indicate conditions for which the device is functional.
See Electrical Characteristics for guaranteed specific performance limits.
Thermal Characteristics
SYMBOL
θ
JC
θ
JA
PARAMETER
Junction-to-case Thermal Resistance
Junction-to-ambient Thermal Resistance (still air)
Value
1.0
20
UNITS
°
C/W
°
C/W
2
TPS4100 – KL/Rev. 2.5/02.05
Tripath Technology, Inc. – Preliminary Technical Information
Electrical Characteristics
(Note 6)
T
A
= 25
°C.
Unless otherwise noted, the supply voltage is VPP=14.4V. See Application/Test Circuit.
SYMBOL
I
STBY
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
OH
V
OL
V
IH
V
IL
I
AM
PARAMETER
Stand-By Current
Stand-By On Threshold Voltage
Stand-By Off Threshold Voltage
Mute-On Threshold Voltage
Mute-Off Threshold Voltage
Yn/YnB Low Threshold Voltage
Yn/YnB High Threshold Voltage
Fault Reporting Logic Output High Voltage Open Drain Output
Fault Reporting Logic Output Low Voltage
AM Mode On Threshold Voltage
AM Mode Off Threshold Voltage
AM Mode Pin Input Current
R
FAULT
= 51KΩ
2.3
1
1
2.3
3.5
1
Conditions
V
SLEEPB
< 0.15V
SLEEPB Low (amp off)
SLEEPB High (amp on)
MUTE Low
MUTE High
2.3
0.6
2.3
1
MIN.
TYP.
100
MAX.
200
0.6
UNITS
µA
V
V
V
V
V
V
V
V
V
V
µA
Note 6: Minimum and maximum limits are guaranteed but may not be 100% tested.
Performance Characteristics
(Note 6)
T
A
= 25
°C.
Unless otherwise noted, R
L
= 4Ω. Measurement Bandwidth = 20kHz. All specifications
shown are applicable only when the TPS4100 is used in conjunction with the TCD6001 Class-T
Controller. See Application/Test Circuit of TCD6001 data sheet for additional information.
SYMBOL
P
OUT
PARAMETER
Output Power
(Continuous power/ channel)
CONDITIONS
VPP=25V saturated sq. wave
VPP=25V THD+N=10%
VPP=25V THD+N=1%
VPP=20V saturated sq. wave
VPP=20V THD+N=10%
VPP=20V THD+N=1%
VPP=14.4V sat. sq. wave, R
L
= 2
Ω
VPP=14.4V THD+N=10%, R
L
= 2
Ω
VPP=14.4V THD+N=1%, R
L
= 2
Ω
VPP=14.4V saturated sq. wave
VPP=14.4V THD+N=10%
VPP=14.4V THD+N=1%
VPP=25V, 4 x 100W sat sq wave
MIN.
95
65
TYP.
112
80
65
74
51
40
63
42
33
39
26
21
88
MAX.
UNITS
W
W
W
W
W
W
W
W
W
W
W
W
%
35
η
Power Efficiency
84
AM Mode
(Note 6)
T
A
= 25
°C.
Unless otherwise noted, the supply voltage is VPP=14.4V, R
L
= 4Ω. Measurement
Bandwidth = 20kHz. See Application/Test Circuit.
.
SYMBOL
I
OCD
Pout
PARAMETER
Over-current detect
Output Power (Note 7)
VPP=16V, THD+N=10%
VPP=14.4V, THD+N=10%
CONDITIONS
MIN.
5.5
13
20
16
TYP.
MAX.
UNITS
A
W
W
Note 7: The TPS4100 heat sinking in AM Mode must be increased (as compared to Class-T mode) to sustain the
typical output numbers. This is due to the lower efficiency of Class B output stage operation.
3
TPS4100 – KL/Rev. 2.5/02.05
Tripath Technology, Inc. – Preliminary Technical Information
Protection Circuits
(Note 5)
T
A
= 25
°C.
Unless otherwise noted, the supply voltage is VPP=14.4V.
SYMBOL
OV
ON
OV
OFF
UV
OFF
UV
ON
OT
ON
OT
OFF
I
OC
VP
MAX
PARAMETER
Over-voltage Threshold
Over-voltage Reset
Under-voltage Reset
Under-voltage Threshold
Over-Temperature Threshold
Over-Temperature Reset
Over-Current Detect
Load Dump Voltage Withstand
CONDITIONS
Over-voltage turn on (amp muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (amp muted)
Over-temperature turn on (amp
muted)
Over-temperature turn off (mute off)
Single cycle, 1kHz input ramp
Test conditions, t
r
> 2.5ms,
t
pulse
<50mS
7.8
150
120
8.0
60
MIN.
27.0
26.0
TYP.
30
28.0
9.5
8.1
160
130
9.5
10.0
8.6
170
140
MAX.
32.5
UNITS
V
V
V
V
°
C
°
C
A
V
TPS4100 Pinout
32-pin SSIP Package
(Top view)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SLEEPB
Y1
Y1B
Y2
Y2B
Y3
Y3B
Y4
Y4B
MUTEB
AM
V5GEN
AGND
AGND
CPUMP
OUT4P
VPP4
PGND
OUT4N
OUT3N
VPP3
OUT3P
FAULT
OUT2P
VPP2
OUT2N
OUT1N
PGND
VPP1
OUT1P
DCAP
Note: The heat slug of the TPS4100 is connected to PGND.
4
PGND
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
TPS4100 – KL/Rev. 2.5/02.05
Tripath Technology, Inc. – Preliminary Technical Information
TPS4100 Pinout
PIN
1
2, 4, 6, 8
3, 5, 7, 9
10
NAME/FUNCTION TYPE
SLEEPB
Y1, Y2, Y3, Y4
Y1B, Y2B, Y3B, Y4B
MUTEB
DESCRIPTION
INPUT (L) Logic input, ACTIVE LOW. Setting SLEEP to low puts the TPS4100 in sleep
mode. Input range is 0 to 5V with 3.3V compliant inputs.
INPUT (L) Non-inverted switching modulator inputs.
INPUT (L) Inverted switching modulator inputs.
INPUT (L) Logic Input, ACTIVE LOW. Setting MUTE to low puts the device in mute mode.
Typically driven by external power supply or microcontroller. Input range is 0 to
5V with 3.3V compliant inputs.
INPUT (L) Logic input, ACTIVE HIGH. Enables Analog Mode operation. Typically driven
by Tripath controller. Input range is 0 to 5V with 3.3V compliant inputs.
OUTPUT
On chip 5V regulator bypass capacitor connection
11
AM
12
12
13, 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
5VGEN
HMUTEB
AGND
CPUMP
OUT4P
VPP4
PGND
OUT4N
OUT3N
VPP3
OUT3P
FAULT
OUT2P
VPP2
OUT2N
OUT1N
PGND
VPP1
OUT1P
DCAP
PGND
OUTPUT (L) Logic output, ACTIVE LOW. HMUTEB low indicates TPS4100 is in mute mode
GND
Analog ground
OUTPUT Charge pump output capacitor
OUTPUT Positive Output Channel 4
POWER
GND
OUTPUT
OUTPUT
POWER
OUTPUT
Positive Supply Voltage Channel 4
Power Ground for Outputs 3 and 4
Negative Output Channel 4
Negative Output Channel 3
Positive Supply Voltage Channel 3
Positive Output Channel 3
OUTPUT (L) Open Drain Logic Output, ACTIVE HIGH. FAULT high indicates fault condition.
OUTPUT
POWER
OUTPUT
OUTPUT
GND
POWER
OUTPUT
GND
Positive Output Channel 2
Positive Supply Voltage Channel 2
Negative Output Channel 2
Negative Output Channel 1
Power Ground for Outputs 1 and 2
Positive Supply Voltage Channel 1
Positive Output Channel 1
Power Ground
OUTPUT Oscillator output for driving external charge pump circuit
5
TPS4100 – KL/Rev. 2.5/02.05
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