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ZY2140 40A No-Bus POL Data Sheet
8V to 14V Input ? 0.5V to 3.65V Output
4.
Electrical Specifications
Specifications apply at the input voltage from 8V to 14V, output load from 0 to 40A, ambient temperature from 0°C
to 70°C, output capacitance consisting of 110 ? F ceramic and 220 ? F tantalum, and the CCA=1 unless otherwise
noted.
4.1
Input Specifications
Parameter
Input voltage (V IN )
Conditions/Description
Refer to Figure 1
Min
8
Nom
Max
14
Units
VDC
Undervoltage Lockout Threshold
Input Current
Maximum Input Current
4.2
Output Specifications
Ramping Up
Ramping Down
V IN =12V
V IN =8V
7.5
6.6
23
19.7
VDC
VDC
mADC
ADC
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Current (I OUT )
V IN MIN to V IN MAX
-40
1
40
ADC
Programmable with a resistor between
2
0.5
3.65
VDC
Output Voltage Range (V OUT )
Output Voltage Setpoint
Accuracy 3
Line Regulation 3
TRIM and MARGIN pins
Default (no resistor)
V IN =12V, I OUT =0.5*I OUT MAX , room
temperature
V IN MIN to V IN MAX
0.5
±1.5% or 20mV whichever is
greater
±0.5
VDC
%V OUT
%V OUT
Load Regulation
3
0 to I OUT MAX
±0.5
%V OUT
Dynamic Regulation
Peak Deviation
Settling Time
Output Voltage Peak-to-Peak
Ripple and Noise
BW=20MHz
Full Load
Efficiency
F SW =500kHz
Full Load
Room temperature
Temperature Coefficient
50% - 75% - 50% load step
Slew rate 1A/ ? s, C OUT =380 ? F
to 10% of peak deviation
V IN =12V, V OUT =0.75V
V IN =12V, V OUT =2.5V
V IN =12V, V OUT =3.3V
V IN =12V, V OUT =0.5V
V IN =12V, V OUT =0.75V
V IN =12V, V OUT =1.0V
V IN =12V, V OUT =1.2V
V IN =12V, V OUT =1.8V
V IN =12V, V OUT =2.5V
V IN =12V, V OUT =3.3V
V IN =12V, I OUT =0.5*I OUT MAX
280
100
15
25
35
75.3
81.9
85.3
87
90.2
92.1
93.5
35
mV
? s
mV
mV
mV
%
%
%
%
%
%
%
ppm/°C
Switching Frequency
2 phases combined
450
500
550
kHz
1
At the negative output current (bus terminator mode) efficiency of the ZY2140 degrades resulting in increased internal power dissipation.
ZY2140 is a step-down converter, thus the output voltage is always lower than the input voltage as show in Error! Reference source not
Digital PWM has an inherent quantization uncertainty of ±6.25mV that is not included in the specified static regulation parameters.
Maximum allowable negative current is limited to 40A.
2
found. .
3
ZD-02014 Rev. BB2, 30-Jun-10
www.power-one.com
Page 3 of 14
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