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3 Electrical Performance Specifications
Table 1. TPS40322EVM-679 Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input Characteristics
VIN Voltage range 8.0 12.0 15.0 V
Maximum input current VIN = VIN
(min)
, I
OUT1
= I
OUT2
= 10 A 4.5 A
No-load input current 55 mA
Output 1 Characteristics
VOUT1 Output voltage I
OUT1(min)
≤ I
OUT1
≤ I
OUT1(max)
1.2 V
I
OUT1
Output load current VOUT1
(min)
≤ VOUT1 ≤ VOUT1
(max)
0 10 A
Output voltage regulation Line Regulation: VOUT1
(min)
≤ VOUT1 ≤ 0.5%
VOUT1
(max)
Load Regulation: I
OUT1(min)
≤ I
OUT1
≤ I
OUT1(max)
0.5%
Output voltage ripple I
OUT1
= I
OUT1(max)
24 mV
PP
Output over current VOUT1
(min)
≤ VOUT1 ≤ VOUT1
(max)
14.6 A
Output 2 Characteristics
VOUT2 Output voltage I
OUT2(min)
≤ I
OUT2
≤ I
OUT2(max)
1.8 V
I
OUT2
Output load current VOUT2
(min)
≤ VOUT2 ≤ VOUT2
(max)
0 10 A
Output voltage regulation Line Regulation: VOUT2
(min)
≤ VOUT2 ≤ 0.5%
VOUT2
(max)
Load Regulation: I
OUT2(min)
≤ I
OUT2
≤ I
OUT2(max)
0.5%
Output voltage ripple I
OUT2
= I
OUT2(max)
36 mV
PP
Output over current VOUT2
(min)
≤ VOUT2 ≤ VOUT2
(max)
14.6 A
Systems Characteristics
Switching frequency 500 kHz
Peak efficiency VOUT1 = 1.2 V, 3.5 A ≤ I
OUT1
≤ 5.5 A, VIN = 8 V 89%
VOUT2 = 1.8 V, 2.5 A ≤ I
OUT2
≤ 6.5 A, VIN = 8 V 90%
Full load efficiency VOUT1 = 1.2 V, I
OUT1
= I
OUT1(max)
, VIN = 12 V 86%
VOUT2 = 1.8 V, I
OUT2
= I
OUT2(max)
, VIN = 12 V 87%
Operating temperature 25 ºC
3
SLUU506–June 2011 Dual Output Synchronous Buck Converter
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