|
Details, datasheet, quote on part number:NCP5422A
| |
Datasheet text preview:
NCP5422A Dual Out-of-Phase Synchronous Buck Controller with Current Limit
The NCP5422A is a dual N-channel synchronous buck regulator controller. It contains all the circuitry required for two independent buck regulators and utilizes the V2TM control method to achieve the fastest possible transient response and best overall regulation, while using the least number of external components. The NCP5422A features out-of-phase synchronization between the channels, reducing the input filter requirement. The NCP5422A also provides undervoltage lockout, Soft Start, built in adaptive non-overlap time and hiccup mode overcurrent protection.
Features http://onsemi.com
SO-16 AD SUFFIX CASE 751B 1
16
PIN CONNECTIONS AND MARKING DIAGRAMS
SO-16 1 GATE(H)1 GATE(L)1 GND BST IS+1 IS-1 VFB1 COMP1 A WL Y WW 16 GATE(H)2 GATE(L)2 VCC ROSC IS+2 IS-2 VFB2 COMP2
· · · · · · · · · ·
V2 Control Topology Hiccup Mode Overcurrent Protection 150 ns Transient Response Programmable Soft Start 100% Duty Cycle for Enhanced Transient Response 150 kHz to 600 kHz Programmable Frequency Operation Switching Frequency Set by Single Resistor Out-Of-Phase Synchronization Between Channels Undervoltage Lockout Both Gate Drive Outputs Held Low During Fault Condition
= Assembly Location = Wafer Lot = Year = Work Week
ORDERING INFORMATION
Device NCP5422ADR2 Package SO-16 Shipping 2500 Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D.
NCP5422A AWLYWW
© Semiconductor Components Industries, LLC, 2003
1
November, 2003 - Rev. 4
Publication Order Number: NCP5422A/D
NCP5422A
12 V
Q5 2N3904 C3 1.0 mF Q3 MTD3302 Q4 MTD3302 R3 2.0 k R4 2.0 k R7 5.0 k ± 1.0% R8 10 k ± 1.0% C15 0.1 mF C7 0.1 mF 14
R10 220 18 V MA3180
MBR0530T MBR0530T1 D1 C4 0.2 mF D2 C5 0.2 mF Q1 MTD3302 L1 Q2 MTD3302 R1 2.0 k 0.1 mF R2 2.0 k C14 0.1 mF R5 8.0 k ± 1.0% R6 10 k±1.0% C16 100 PF C6 1.3 mH + 1.8 V/10 A C8-C10 + C1-C2 2 × 220 mF
1.5 V/10 A + C11-C13 3 × 680 mF/4.0 V
L2 1.3 mH
4 VCC BST 1 16 GATE(H)2 GATE(H)1 15 GATE(L)2 GATE(L)1 2
12 IS+2 11 9 10
IS+1 5 IS-1 6 COMP1 8
3 × 680 mF/4.0 V
NCP5422A
IS-2 COMP2
VFB2 13 R OSC R9 30.9 k
GND 3
VFB1 7
C17 100 pF
Figure 1. Application Diagram, 12 V to 1.5 V/10 A and 1.8 V/10 A Converter
http://onsemi.com
2
NCP5422A
ABSOLUTE MAXIMUM RATINGS*
Rating Operating Junction Temperature, TJ Storage Temperature Range, TS ESD Susceptibility (Human Body Model) Package Thermal Resistance, SO-16: Junction-to-Case, RqJC Junction-to-Ambient, RqJA Lead Temperature Soldering: 1. 60 second maximum above 183°C. *The maximum package power dissipation must be observed. Reflow: (Note 1) Value 150 -65 to +150 2.0 28 115 230 peak Unit °C °C kV °C/W °C/W °C
ABSOLUTE MAXIMUM RATINGS
Pin Symbol VCC COMP1, COMP2 Pin Name IC Power Input VMAX 16 V VMIN -0.3 V ISOURCE N/A ISINK 1.5 A peak 200 mA DC 1.0 mA
Compensation Capacitor for Channel 1 or 2 Voltage Feedback Input for Channel 1 or 2 Power Input for GATE(H)1, 2
4.0 V
-0.3 V
1.0 mA
VFB1, VFB2 BST
5.0 V
-0.3 V
1.0 mA
1.0 mA
20 V
-0.3 V
N/A
1.5 A peak 200 mA DC 1.0 mA 1.5 A peak 200 mA DC 1.5 A peak 200 mA DC N/A
ROSC GATE(H)1, GATE(H)2 GATE(L)1, GATE(L)2 GND
Oscillator Resistor High-Side FET Driver for Channel 1 or 2 Low-Side FET Driver for Channel 1 or 2 Ground
4.0 V 20 V
-0.3 V -2.0 V for 100 ns -0.3 V DC -2.0 V for 100 ns -0.3 V DC 0V
1.0 mA 1.5 A peak 200 mA DC 1.5 A peak 200 mA DC 1.5 A peak 200 mA DC 1.0 mA
16 V
0V
IS+1, IS+2
Positive Current Sense for Channel 1 or 2 Negative Current Sense for Channel 1 or 2
6.0 V
-0.3 V
1.0 mA
IS-1, IS-2
6.0 V
-0.3 V
1.0 mA
1.0 mA
http://onsemi.com
3
|
|
