ISL78225 Datasheet, PDF (4/21 Pages) Intersil Corporation – 4-Phase Interleaved Boost PWM Controller with Light Load Efficiency Enhancement

ISL78225
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
TEMP RANGE
(°C)
PACKAGE
TAPE & REEL
(Pb-free)
PKG.
DWG. #
ISL78225ANEZ-T
ISL78225 ANEZ
-40 to +125
44 Ld EP-TQFP
Q44.10x10A
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL78225. For more information on MSL please see techbrief TB363.
ISL78225 Block Diagram
VIN_OVB VOUT_SEN
PGOOD VOUT_OVB
SYNC
PLL_COMP
VIN_SEN
VIN
VCC
EN
SS
DRIVE_EN
2.4V
OV_IN
REF
5V LDO
2V
POR
1.2V
OVER OT
TEMP
5µA
SOFT- START LOGIC
2.4V OC_ALL
OC_PH
OV_OUT
OV_IN
UV
OC
OT
S
Q
R
2.4V
FB
FAULT CONTROL
CIRCUITS
OV_OUT
UV
0.8Vref
DUPLICATE FOR EACH CHANNEL
VREF2
FB
COMP
IOUT
2V
Gm
ADDER
OC_ALL
2V
DMAX
OT
OC
OV_OUT
PH3 PH4
IOUT1
IOUT4
PHASE DROP CONTROL
SYNC
DETECT
DMAX
VCO
SLOPE
COMPENSATION
20k
OC_PH
S
R1 Q
R2
ISEN1
CSA
IOUT1
160µA
ZCD
(FOR PH1 &
PH2 ONLY)
PWM CONTROL
MODE
CLK_OUT
DMAX
FS
SLOPE
ISEN1P
ISEN1N
PWM1
PWM_TRI
PWM_INV
MODE
GND
P_COM
4
FN7909.0
December 15, 2011