ISL73847SEHEV2Z
The ISL73847SEHEV2Z evaluation board
benchmarks the performance of the
dual-phase buck controller. The evaluation board is
optimized for a 4.5V to 15V input operation to
generate a 50A max, 1V output. Input and output
connections, test points, and jumper settings on the
board provide customers an easy-to-use evaluation
platform for point-of-load power applications.
Specifications
▪ Buck Power Supply input (PVIN): 4.5V to 15V
▪ Controller Analog Supply input (VDD): 4.5V to 19V
▪ Preset output voltage: 1V
▪ Preset Switching Frequency: 500kHz
▪ Maximum dual-phase output current: 50A
▪ Maximum single-phase output current: 25A
▪ Preset droop regulation
22µF
0.1µF
VFB-
100nF
VREF
604Ω
DROOP
VFB+
56nF
22nF
SS
8.2nF
4.22kΩ
COMP
94.2kΩ
FS
330pF
SYNC-I
SYNC-O
100kΩ
GND
R34UZ0010EU0100 Rev.1.00
Nov 21, 2022
ISL73847SEH
EN
VDD
LDO
600mV
I
DROOP
-
3.6mS
+
EA
-
+
+
VFB+
OSC
VREF
Figure 1. ISL73847SEHEV2Z Block Diagram
Features
▪ Power-Good LED indicator
▪ On-board transient load current generator
▪ Integrated LDO (VCC)
▪ External Clock Synchronization (SYNCI & SYNCO)
▪ Droop regulation set by a single resistor
VCC
22µF
1µF
UVLO
FLT
PWM1
PWM
PWM2
100pF
SLP
SLOPE
GEN
34.8kΩ
ISEN1+
20µA/50mV
CSA1
ISEN1-
IMON
Σ
10kΩ
ISEN2+
CSA2
ISEN2-
20µA/50mV
VCC
680Ω
Evaluation Board Manual
PVIN
638µF
VDD
0.22µH
2mΩ
Half Bridge
Driver
ISL73041SEH
30.1Ω
FLT
680pF
PVIN
22µF
FLT
VDD
0.22µH
2mΩ
Half Bridge
Driver
ISL73041SEH
30.1Ω
680pF
© 2022 Renesas Electronics
Current Feedback
Remote Voltage Feedback
VOUT
5.28mF
3.24kΩ
FPGA
LOAD
4.99kΩ
Page 1
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