CS5422GDWFR24 データシートの表示（PDF） - ON Semiconductor

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CS5422GDWFR24

Dual Out−of−Phase Synchronous Buck Controller with Current Limit

ON Semiconductor 

CS5422

ELECTRICAL CHARACTERISTICS (0°C < TA < 70°C; 0°C < TJ < 125°C; ROSC = 30.9 k, CCOMP1,2 = 0.1 μF,

10.8 V < VCC < 13.2 V; 10.8 V < BST < 20 V, CGATE(H)1,2 = CGATE(L)1,2 = 1.0 nF, unless otherwise specified.)

Characteristic

Test Conditions

Min

Typ

Error Amplifier

VFB1(2) Bias Current

VFB1(2) Input Range

COMP1,2 Source Current

COMP1,2 Sink Current

Reference Voltage 1(2)

COMP1,2 Max Voltage

COMP1,2 Min Voltage

Open Loop Gain

VFB1(2) = 0 V

−

COMP1,2 = 1.2 V to 2.5 V; VFB1(2) = 0.8 V

COMP1,2 = 1.2 V; VFB1(2) = 1.2 V

COMP1 = VFB1; COMP2 = VFB2

VFB1(2) = 0.8 V

VFB1(2) = 1.2 V

−

−

0

15

15

0.980

3.0

−

−

0.5

−

30

30

1.000

3.3

0.25

95

Unity Gain Band Width

−

−

40

PSRR @ 1.0 kHz

−

−

70

Transconductance

−

−

32

Output Impedance

−

−

2.5

GATE(H) and GATE(L)

High Voltage (AC)

Measure: VCC − GATE(L)1,2;

BST − GATE(H)1,2; Note 2

−

0

Low Voltage (AC)

Measure:GATE(L)1,2 or GATE(H)1,2; Note 2

−

0

Rise Time

1.0 V < GATE(L)1,2 < VCC − 1.0 V

1.0 V < GATE(H)1,2 < BST − 1.0 V,

BST ≤ 14 V

−

20

Fall Time

VCC − 1.0 > GATE(L)1,2 > 1.0 V

BST − 1.0 > GATE(H)1,2 > 1.0 V,

BST ≤ 14 V

−

15

GATE(H) to GATE(L) Delay

GATE(H)1,2 < 2.0 V, GATE(L)1,2 > 2.0 V

BST ≤ 14 V

20

40

GATE(L) to GATE(H) Delay

GATE(L)1,2 < 2.0 V, GATE(H)1,2 > 2.0 V;

BST ≤ 14 V

20

40

GATE(H)1(2) and GATE(L)1(2)

pull−down.

Resistance to GND

Note 2

50

125

PWM Comparator

Transient Response

PWM Comparator Offset

COMP1,2 = 1.0 V, VFB1(2) = 0 to 1.2 V

VFFB1(2) = 0 V; Increase COMP1,2 until

GATE(H)1,2 starts switching

−

150

0.30

0.45

Artificial Ramp

Duty cycle = 50%, Note 2

40

70

Minimum Pulse Width

Note 2

−

−

Oscillator

Switching Frequency

Switching Frequency

Switching Frequency

ROSC Voltage

Phase Difference

ROSC = 61.9 k; Measure GATE(H)1; Note 2

ROSC = 30.9 k; Measure GATE(H)1

ROSC = 15.1 k; Measure GATE(H)1; Note 2

ROSC = 30.9 k, Note 2

−

112

224

450

0.970

−

150

300

600

1.000

180

2. Guaranteed by design, not 100% tested in production.

Max

1.6

1.1

60

60

1.020

−

0.35

−

−

−

−

−

0.5

0.5

50

50

70

70

280

300

0.60

100

300

188

376

750

1.030

−

Unit

μA

V

μA

μA

V

V

V

dB

kHz

dB

mmho

MΩ

V

V

ns

ns

ns

ns

kΩ

ns

V

mV

ns

kHz

kHz

kHz

V

°

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