Texas Instruments 5Vout, 7W, IEEE 802.3-2005 Compliant, PD Controller, PS Controller EVM for TPS23753AEVM-001 TPS23753AE TPS23753AEVM-001 数据表
产品代码
TPS23753AEVM-001
TPS23753A
www.ti.com
SLVS933B – JULY 2009 – REVISED JANUARY 2010
RECOMMENDED OPERATING CONDITIONS
Voltage with respect to V
SS
(unless otherwise noted)
MIN
NOM
MAX
UNIT
Input voltage range, V
DD
, V
DD1
, RTN
0
57
V
Input voltage range, V
C
to RTN
0
18
V
V
I
Input voltage range, APD, CTL to RTN
0
V
B
V
Input voltage range, CS to RTN
0
2
V
RTN current (T
J
≤
125°C)
350
mA
V
B
sourcing current
0
2.5
5
mA
V
B
capacitance
0.08
0..1
m
F
R
BLNK
0
350
k
Ω
Synchronization pulse width input (when used)
25
ns
T
J
Operating junction temperature range
–40
125
°C
ELECTRICAL CHARACTERISTICS
Unless otherwise noted: CS = APD = CTL = RTN, GATE open, R
FRS
= 60.4 k
Ω
, R
BLNK
= 249 k
Ω
, C
VB
= C
VC
= 0.1
m
F, R
DEN
=
24.9 k
Ω
, R
CLS
open, V
VDD-VSS
= 48 V, V
VDD1-RTN
= 48 V, 8.5 V
≤
V
VC-RTN
≤
18 V, –40°C
≤
T
J
≤
125°C
Controller Section Only
[V
[V
SS
= RTN and V
DD
= V
DD1
] or [V
SS
= RTN = V
DD
], all voltages referred to RTN. Typical specifications are at 25°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
C
UVLO_1
V
C
rising
8.65
9
9.3
Undervoltage lockout
V
UVLO_H
Hysteresis
(1)
3.3
3.5
3.7
Operating current
V
C
= 12 V, CTL = V
B
0.40
0.58
0.85
mA
V
DD1
= 10.2 V, V
VC
(0) = 0 V
50
85
175
t
ST
Startup time, C
VC
= 22
m
F
ms
V
DD1
= 35 V, V
VC
(0) = 0 V
30
48
85
V
DD1
= 10.2 V, V
VC
= 8.6 V
0.44
1.06
1.80
Startup current source - I
VC
mA
V
DD1
= 48 V, V
VC
= 0 V
2.5
4.3
6.0
V
B
Voltage
6.5 V
≤
V
C
≤
18 V, 0
≤
I
VB
≤
5 mA
4.75
5.10
5.25
V
FRS
CTL= V
B
, Measure GATE
Switching frequency
223
248
273
kHz
R
FRS
= 60.4 k
Ω
78.5
D
MAX
Duty cycle
CTL= V
B
, Measure GATE
76%
81%
%
V
SYNC
Synchronization
Input threshold
2
2.2
2.4
V
CTL
V
ZDC
0% duty cycle threshold
V
CTL
↓
until GATE stops
1.3
1.5
1.7
V
Softstart period
Interval from switching start to V
CSMAX
400
800
m
s
Input resistance
70
100
145
k
Ω
BLNK
In addition to t
1
Blanking delay
BLNK = RTN
35
52
75
ns
R
BLNK
= 49.9 k
Ω
41
52
63
CS
V
CSMAX
Maximum threshold voltage
V
CTL
= V
B
, V
CS
↑
until GATE duty cycle drops
0.50
0.55
0.60
V
t
1
Turn off delay
V
CS
= 0.65 V
25
41
60
ns
V
SLOPE
Internal slope compensation voltage
Peak voltage at maximum duty cycle, referred to CS
90
118
142
mV
I
SL_EX
Peak slope compensation current
V
CTL
= V
B
, I
CS
at maximum duty cycle (ac component)
30
42
54
m
A
Bias current (sourcing)
Gate high, dc component of CS current
2
3
4.2
m
A
(1)
The hysteresis tolerance tracks the rising threshold for a given device.
Copyright © 2009–2010, Texas Instruments Incorporated
3