PDF預(yù)覽

• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30

Data Sheet No.PD 94702

IRU3146

DUAL SYNCHRONOUS PWM CONTROLLER WITH

CURRENT SHARING CIRCUITRY AND AUTO-RESTART

FEATURES

Dual Synchronous Controller with 180 out-of-phase

Configurable to 2-Independent Outputs or 2-Phase

Single Output

Current Sharing Using Inductor's DCR

Current Limit using MOSFET's R

DS(ON)

Hiccup/Latched Current Limit

Latched Over-Voltage Protection

Vcc from 4.5V to 16V Input

Programmable Switching Frequency up to 500KHz

Two Independent Soft-Starts/ Shutdowns

0.8V Precision Reference Voltage Available

Power Good Output

External Frequency Synchronization

DESCRIPTION

The IRU3146 IC combines a Dual synchronous Buck

controller, providing a cost-effective, high performance

and flexible solution. The IRU3146 can configured as 2-

independent or as 2-phase controller. The 2-phase con-

figuration is ideal for high current applications. The

IRU3146 features 180 out of phase operation which re-

duces the required input/output capacitance and results

to few number of capacitor quantity. Other key features

offered by this device include two independent program-

mable soft starts, programmable switching frequency up

to 500KHz per phase, under voltage lockout function.

The current limit is provided by sensing the lower

MOSFET's on-resistance for optimum cost and perfor-

mance.

2-Phase Power Suppl

y

Graphic Card

DDR Memory Applications

D1

C12

APPLICATIONS

Embedded Computer Systems

Telecom Systems

Point of Load Power Architectures

12V

C11

C3

C4

C13

Q2

C14

L3

V

CL

VcH1 V

OUT3

VcH2

Vcc

HDrv1

OCSet1

Hiccup

Sync

V

REF

LDrv1

PGnd1

V

P2

C5

R1

Q3

R5

C15

R10

1.8V @ 30A

C16

R2

C8

R3

Rt

U1

IRU3146

D2

BAT54A

V

SEN1

V

SEN2

Fb1

Fb2

C17

R11

R7

Comp1

R9

C18

L4

R8

C9

R4

Comp2

HDrv2

OCSet2

R6

Q4

Q5

PGood

C10

PGood

SS1 / SD

SS2 / SD

LDrv2

PGnd2

Gnd

Figure 1 - Typical application of IRU3146 in 2-phase configuration with inductor current sensing

PACKAGE ORDER INFORMATION

DEVICE

IRU3146CF

Rev. 1.1

6/25/04

PACKAGE

28-Pin TSSOP (F)

www.irf.com

1

next

IRU3146CF相關(guān)型號(hào)PDF文件下載

• 型號(hào)
  版本
  描述
  廠商
  下載
• IRU3004
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL ...
  IRF
  IRU3004
• IRU3004
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL ...
  IRF [Inter...
  IRU3004
• IRU3007
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRONOUS,ADJUSTA...
  IRF
  IRU3007
• IRU3007
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK, NON-SYNCHRONOUS,ADJUSTA...
  IRF [Inter...
  IRU3007
• IRU3011
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
  IRF
  IRU3011
• IRU3011
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
  IRF [Inter...
  IRU3011
• IRU3013
  英文版
  VRM 8.5 COMPATIBLE 5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTR...
  IRF
  IRU3013
• IRU3013
  英文版
  VRM 8.5 COMPATIBLE 5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTR...
  IRF [Inter...
  IRU3013
• IRU3018
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND ...
  IRF
  IRU3018
• IRU3018
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK PLUS LDO CONTROLLER AND ...
  IRF [Inter...
  IRU3018
• IRU3027
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH TRIPL...
  IRF
  IRU3027
• IRU3027
  英文版
  5-BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH TRIPL...
  IRF [Inter...
  IRU3027
• IRU3033
  英文版
  8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC
  IRF
  IRU3033
• IRU3033
  英文版
  8-PIN PWM SWITCHER AND LINEAR CONTROLLER IC
  IRF [Inter...
  IRU3033
• IRU3034
  英文版
  8-PIN PWM SWITCHER CONTROLLER IC
  IRU3034
• IRU3037
  英文版
  8-PIN SYNCHRONOUS PWM CONTROLLER
  IRF
  IRU3037
• IRU3037
  英文版
  8-PIN SYNCHRONOUS PWM CONTROLLER
  IRF [Inter...
  IRU3037
• IRU3038
  英文版
  SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPL...
  IRF
  IRU3038
• IRU3038
  英文版
  SYNCHRONOUS PWM CONTROLLER FOR TERMINATION POWER SUPPLY APPL...
  IRF [Inter...
  IRU3038
• IRU3039
  英文版
  SYNCHRONOUS PWM CONTROLLER WITH OVER CURRENT PROTECTION
  IRF
  IRU3039

您可能感興趣的PDF文件資料

• IRU3038CF
• IRU3065
• IRU3137
• IRU3007
• IRU3007
• IRU3005CW
• IRU3004CW-TR
• IRU3004CWPBF
• IRU3004CW
• IRU3004CW
• IRU3004CFTR
• IRU3004CFPBF

熱門IC型號(hào)推薦

• IR2153STR
• IRFR5305TRPBF
• IRF5305PBF
• INA220AIDGSR
• IR3505ZMTRPBF
• IRU3033CSTR
• IS61WV5128BLL-10TLI
• IRU3037CSTRPBF
• IRF9410
• ISL6612ACBZ-T
• IRF7811ATR
• IR2110PBF