Texas Instruments TPS54560 Step-Down DC-DC Converter Evaluation Module TPS54560EVM-515 TPS54560EVM-515 데이터 시트
제품 코드
TPS54560EVM-515
SLVSBN0A – MARCH 2013 – REVISED MARCH 2014
7.5 Electrical Characteristics
T
J
= –40°C to 150°C, VIN = 4.5 to 60V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY VOLTAGE (VIN TERMINAL)
Operating input voltage
4.5
60
V
Internal undervoltage lockout threshold
Rising
4.1
4.3
4.48
V
Internal undervoltage lockout threshold
325
mV
hysteresis
Shutdown supply current
EN = 0 V, 25°C, 4.5 V
≤ VIN ≤ 60 V
2.25
4.5
μA
Operating: nonswitching supply current
FB = 0.9 V, T
A
= 25°C
146
175
ENABLE AND UVLO (EN TERMINAL)
Enable threshold voltage
No voltage hysteresis, rising and falling
1.1
1.2
1.3
V
Enable threshold +50 mV
–4.6
Input current
μA
Enable threshold –50 mV
–0.58
–1.2
-1.8
Hysteresis current
–2.2
–3.4
-4.5
μA
VOLTAGE REFERENCE
Voltage reference
0.792
0.8
0.808
V
HIGH-SIDE MOSFET
On-resistance
VIN = 12 V, BOOT-SW = 6 V
92
190
m
Ω
ERROR AMPLIFIER
Input current
50
nA
Error amplifier transconductance (g
M
)
–2
μA < I
COMP
< 2
μA, V
COMP
= 1 V
350
μMhos
Error amplifier transconductance (g
M
) during
–2
μA < I
COMP
< 2
μA, V
COMP
= 1 V, V
FB
= 0.4 V
77
μMhos
soft-start
Error amplifier dc gain
V
FB
= 0.8 V
10,000
V/V
Min unity gain bandwidth
2500
kHz
Error amplifier source/sink
V
(COMP)
= 1 V, 100 mV overdrive
±30
μA
COMP to SW current transconductance
17
A/V
CURRENT LIMIT
All VIN and temperatures, Open Loop
(1)
6.3
7.5
8.8
Current limit threshold
All temperatures, VIN = 12 V, Open Loop
(1)
6.3
7.5
8.3
A
VIN = 12 V, T
A
= 25°C, Open Loop
(1)
7.1
7.5
7.9
THERMAL SHUTDOWN
Thermal shutdown
176
°C
Thermal shutdown hysteresis
12
°C
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK TERMINAL)
Switching frequency range using RT mode
100
2500
kHz
f
SW
Switching frequency
R
T
= 200 k
Ω
450
500
550
kHz
Switching frequency range using CLK mode
160
2300
kHz
Minimum CLK input pulse width
15
ns
RT/CLK high threshold
1.55
2
V
RT/CLK low threshold
0.5
1.2
V
(1)
Open Loop current limit measured directly at the SW terminal and is independent of the inductor value and slope compensation.
Copyright © 2013–2014, Texas Instruments Incorporated
5
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