ncp5423dr2g ON Semiconductor, ncp5423dr2g Datasheet - Page 4

• Manufacturer Part Number: ncp5423dr2g
• Description: Dual Outofphase Synchronous Buck Controller With Current Limit
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
10.8 V < V
Error Amplifier
GATE(H) and GATE(L)
PWM Comparator
Oscillator
2. Guaranteed by design, not 100% tested in production.
V
V
COMP1,2 Source Current
COMP1,2 Sink Current
Reference Voltage 1(2)
Reference Voltage 1(2)
COMP1,2 Max Voltage
COMP1,2 Min Voltage
Open Loop Gain
Unity Gain Band Width
PSRR @ 1.0 kHz
Transconductance
Output Impedance
High Voltage (AC)
Low Voltage (AC)
Rise Time
Fall Time
GATE(H) to GATE(L) Delay
GATE(L) to GATE(H) Delay
GATE(H)1(2) and GATE(L)1(2) pulldown
PWM Comparator Offset
Artificial Ramp
Minimum Pulse Width
Switching Frequency
Switching Frequency
Switching Frequency
R
Phase Difference
FB1(2)
FB1(2)
OSC
Voltage
Bias Current
Input Range
CC
Characteristic
< 13.2 V; 10.8 V < BST < 20 V, C
NCP5422A
NCP5423
(0°C < T
V
COMP1,2 = 1.2 V to 2.5 V; V
COMP1,2 = 1.2 V; V
COMP1 = V
COMP1 = V
V
V
Measure: V
BST − GATE(H)1,2; Note 2
Measure:GATE(L)1,2 or GATE(H)1, 2; Note 2
1.0 V < GATE(L)1,2 < V
1.0 V < GATE(H)1,2 < BST − 1.0 V,
BST ≤ 14 V
V
BST − 1.0 > GATE(H)1,2 > 1.0 V,
BST ≤ 14 V
GATE(H)1,2 < 2.0 V, GATE(L)1,2 > 2.0 V
BST ≤ 14 V
GATE(L)1,2 < 2.0 V, GATE(H)1,2 > 2.0 V;
BST ≤ 14 V
Resistance to GND
Note 2
V
GATE(H)1,2 starts switching
Duty cycle = 50%, Note 2
Note 2
R
R
R
R
FB1(2)
FB1(2)
FB1(2)
CC
FFB1(2)
OSC
OSC
OSC
OSC
GATE(H)1,2
− 1.0 > GATE(L)1,2 > 1.0 V
= 61.9 k; Measure GATE(H)1; Note 2
= 30.9 k; Measure GATE(H)1
= 15.1 k; Measure GATE(H)1; Note 2
= 30.9 k, Note 2
A
= 0 V
= 0.8 V
= 1.2 V
< 70°C; 0°C < T
= 0 V; Increase COMP1,2 until
NCP5422A, NCP5423
CC
FB1
FB1
= C
http://onsemi.com
− GATE(L)1, 2;
Test Conditions
; COMP2 = V
; COMP2 = V
GATE(L)1,2
FB1(2)
−
−
−
−
−
−
−
CC
J
4
< 125°C; R
= 1.2 V
− 1.0 V
= 1.0 nF, unless otherwise specified.)
FB1(2)
FB2
FB2
= 0.8 V
OSC
= 30.9 k, C
0.980
0.990
0.970
0.30
Min
250
450
COMP1,2
112
3.0
15
15
20
20
50
40
−
0
−
−
−
−
−
−
−
−
−
−
−
−
= 0.1 mF,
1.000
1.000
0.425
1.000
0.25
Typ
125
150
300
600
180
0.5
3.3
2.5
30
30
95
40
70
32
20
15
40
40
70
−
0
0
−
1.020
1.010
1.030
Max
0.35
0.55
280
100
300
188
350
750
1.6
1.1
0.5
0.5
60
60
50
50
70
70
−
−
−
−
−
−
−
mmho
Unit
kHz
MW
kHz
kHz
kHz
mV
mA
mA
mA
dB
dB
kW
ns
ns
ns
ns
ns
V
V
V
V
V
V
V
V
V
°