TPS40060_17 Datasheet, PDF (3/39 Pages) Texas Instruments – WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER

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TPS40060
TPS40061
SLUS543F – DECEMBER 2002 – REVISED JUNE 2013
ELECTRICAL CHARACTERISTICS
T_A = –40°C to 85°C, V_IN = 24 V_dc, R_T = 165 kΩ, I_KFF = 113 µA, f_SW = 300 kHz, all parameters at zero power dissipation (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
INPUT SUPPLY
V_IN Input voltage range, VIN
OPERATING CURRENT
10
55 V
I_DD Quiescent current
5-V REFERENCE
Output drivers not switching
1.5 2.5 mA
V_BP5 Input voltage
OSCILLATOR/RAMP GENERATOR⁽¹⁾
4.5 5.0 5.5 V
f_OSC
V_RAMP
V_IH
V_IL
I_SYNC
Frequency
PWM ramp voltage⁽²⁾
High-level input voltage, SYNC
Low-level input voltage, SYNC
Input current, SYNC
Pulse width, SYNC
Pulse amplitude = 5 V
270 300 330 kHz
2
2
V
0.8
5
10 µA
50
ns
V_RT RT voltage
Maximum duty cycle
Minimum duty cycle
V_KFF
I_KFF
Feed-forward voltage
Feed-forward current operating range⁽²⁾
SS/SD (SOFT START)
V_FB = 0 V, 100 kHz ≤ f_SW≤ 1 MHz
V_FB ≥ 0.75 V
2.32
85%
3.35
20
2.50 2.68 V
98%
0%
3.50 3.65 V
1100 µA
I_SS
Soft-start source current
V_SS Soft-start clamp voltage
t_DSCH Discharge time
t_SS
Soft-start time
SS/SD (SHUTDOWN)
C_SS = 220 pF
C_SS = 220 pF, 0 V ≤ V_SS ≤ 1.6 V
1.5 2.3 2.9 µA
3.1 3.7 4.0 V
1.6 2.2 2.9
µs
120 155 235
V_SD Shutdown threshold voltage
V_EN Device action threshold voltage
Hysteresis
90 130 160
170 210 260 mV
80
10-V REFERENCE
V_BP10 Input voltage
ERROR AMPLIFIER
9.0 9.7 10.7 V
V_FB Feedback regulation voltage
T_A = 25°C
0°C ≤ T_A ≤ 85°C
0.698 0.700 0.704
0.690 0.700 0.707 V
0.690 0.700 0.715
G_BW
A_VOL
I_OH
I_OL
I_BIAS
V_OH
V_OL
Gain bandwidth
Open loop gain
High-level output source current
Low-level output sink current
Input bias current
High-level output voltage
Low-level output voltage
V_COMP = 2.0 V, V_FB = 0 V
V_COMP = 2.0 V, V_FB = 1 V
V_FB = 0.7 V
I_OH = 0.5 mA, V_FB = 0 V
I_OL = 0.5 mA, V_FB = 1 V
3
60
1.5
2.5
3.25
0.050
5
80
4.0
4.0
100
3.45
0.215
300
3.60
0.350
MHz
dB
mA
nA
V
(1) KFF current (I_KFF) increases with SYNC frequency (f_SYNC) and decreases with maximum duty cycle (D_MAX).
(2) Ensured by design. Not production tested.
Copyright © 2002–2013, Texas Instruments Incorporated
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