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TPA3255D2DDV Arkusz danych(PDF) 6 Page - Texas Instruments

Numer części TPA3255D2DDV
Szczegółowy opis  600W Mono PurePath Ultra-HD Analog-Input
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6
TPA3255
SLASEA8 – FEBRUARY 2016
www.ti.com
Product Folder Links: TPA3255
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MIN
TYP
MAX
UNIT
PVDD_x
Half-bridge supply
DC supply voltage, RL = 4Ω
12
51
53.5
V
DC supply voltage, RL ≥ 6Ω
12
53.5
56.5
GVDD_x
Supply for logic regulators and gate-drive
circuitry
DC supply voltage
10.8
12
13.2
V
VDD
Digital regulator supply voltage
DC supply voltage
10.8
12
13.2
V
RL(BTL)
Load impedance
Output filter inductance within
recommended value range
2.7
4
RL(SE)
1.5
3
RL(PBTL)
1.6
2
LOUT(BTL)
Output filter inductance
Minimum output inductance at IOC
5
μH
LOUT(SE)
5
LOUT(PBTL)
5
FPWM
PWM frame rate selectable for AM
interference avoidance; 1% Resistor
tolerance
Nominal
575
600
625
kHz
AM1
475
500
525
AM2
430
450
470
R(FREQ_ADJ)
PWM frame rate programming resistor
Nominal; Master mode
9.9
10
10.1
k
AM1; Master mode
19.8
20
20.2
AM2; Master mode
29.7
30
30.3
CPVDD
PVDD close decoupling capacitors
1.0
μF
ROC
Over-current programming resistor
Resistor tolerance = 5%, RL = 4Ω
22
30
k
Resistor tolerance = 5%, RL ≥ 6Ω
30
ROC(LATCHED)
Over-current programming resistor
Resistor tolerance = 5%, RL = 4Ω
47
64
k
Resistor tolerance = 5%, RL ≥ 6Ω
64
V(FREQ_ADJ)
Voltage on FREQ_ADJ pin for slave
mode operation
Slave mode
3.3
V
TJ
Junction temperature
0
125
°C
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2)
Thermal data are obtained with 85°C heat sink temperature using thermal compound with 0.7W/mK thermal conductivity and 2mil
thickness. In this model heat sink temperature is considered to be the ambient temperature and only path for dissipation is to the
heatsink.
7.4 Thermal Information
THERMAL METRIC(1)
TPA3255
UNIT
DDV 44-PINS HTSSOP
JEDEC STANDARD
4 LAYER PCB
FIXED 85°C
HEATSINK
TEMPERATURE(2)
RθJA
Junction-to-ambient thermal resistance
50.7
2.5(2)
°C/W
RθJC(top)
Junction-to-case (top) thermal resistance
0.36
0.2
RθJB
Junction-to-board thermal resistance
24.4
n/a
ψJT
Junction-to-top characterization parameter
0.19
0.5
ψJB
Junction-to-board characterization parameter
24.2
n/a
RθJC(bot)
Junction-to-case (bottom) thermal resistance
n/a
n/a


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