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TDA21321 データシート(PDF) 11 Page - Infineon Technologies AG

部品番号 TDA21321
部品情報  Desktop and Server Vcore and non-Vcore buck-converter
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メーカー  INFINEON [Infineon Technologies AG]
ホームページ  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

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TDA21321
Electrical Specification
Data Sheet
11
Revision 2.4, 2015-07-16
Table 9
Voltage Supply And Biasing Current
Parameter
Symbol
Values
Unit Note / Test Condition
Min. Typ. Max.
UVLO VCIN
rising
V
UVLO1_R
3.0
4.0 V
Driver enable threshold; above threshold driver is active,
driver responds to PWM input when UVLO VDRV and
UVLO BOOT are enabled, TMON/FAULT reports driver
temperature when UVLO VDRV is enabled
UVLO VCIN
falling
V
UVLO1_F
2.6
3.6
Driver disable threshold; below threshold driver is inactive,
PWM and TMON/FAULT held low by pull-down resistors
UVLO VDRV
rising
V
UVLO2_R
4.16 4.25 4.34 V
GL, GH and TMON/FAULT enable threshold; when UVLO
VCIN is enabled then: above threshold GL is enabled, GH
depends on UVLO BOOT, TMON/FAULT is released to
report driver temperature
UVLO VDRV
falling
V
UVLO2_F
3.7
3.8
3.9
GL, GH and TMON/FAULT disable threshold; when UVLO
VCIN is enabled: below threshold after 3 consecutive cycles
or 15 µs (typ.) the driver outputs GL/GH are disabled,
TMON/FAULT stops temperature reporting and is held low
by pull-down resistor
UVLO BOOT
rising
V
UVLOboot_R
3.88 4.05 4.22 V
VBOOT-VSW rising, GH enable threshold; when UVLO VCIN
and UVLO VDRV are active: above threshold GH responds
to PWM
UVLO BOOT
falling
V
UVLOboot_F
3.5
3.63 3.76
VBOOT-VSW falling, GL/GH disable threshold; when UVLO
VCIN and UVLO VDRV are enabled: below threshold
counter starts, after 3 consecutive PWM cycles driver
outputs are disabled
Driver current I
VDRV_600kHz
18
mA
OFF# = 3.3 V, f
SW = 600 kHz
I
VDRV_1MHz
30
OFF# = 3.3 V, f
SW = 1 MHz
IC current
(control)
I
VCIN_O
1.0
mA
OFF# = 3.3 V, PWM = Open for > 19 µs (typ.)
IC quiescent
I
CIN+IDRV
1.2
Pre-Bias at
SW
VSW_0
120
160 mV
PWM in Tri-state (VPWM_S), VCIN = VDRV = 5V, internal pull-
down resistor 1.5 k
Table 10
Current Sense
Parameter
Symbol
Values
Unit Note / Test Condition
Min. Typ. Max.
IMON
Voltage Range
V
IMON
0.8
2.2
V
IMONREF is a current mirror output serving
as unfiltered reference node. At IMON a
filtered voltage signal proportional to the
current is provided. It tracks the average
value of IMONREF.
IMONREF IMON gain resistor
range
RIMON
0.2
1.0
kΩ
Current sense gain aCS
-
6.67
-
µA/A
Leakage current
ILeak
-2
0
2
µA
ID = 0, VCM = 1.5, PWM in tri-state
Current
Monitoring
Zero current offset IOffset
-3
0
3
µA
Corresponds to 2.25 mV at 5 mV/A
(RIMON = 750Ω), device in regulation
Accuracy at 25 °C
… 125 °C
VDRV = 5 V ± 10 %
VCIN = 5 V ± 10 %
a11
-3
3
%
for 45 A < Iout < IOCPtrip tested at 25 A,
other guaranteed
by design
a12
-2.5
2.5
%
for 25 A ≤ Iout ≤ 45 A
a13
-0.5
0.5
A
for -25 < Iout < 25 A
a14
-20
20
%
for -50
A ≤ Iout ≤ -25 A


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