ISL6228HIEVAL3Z Intersil, ISL6228HIEVAL3Z Datasheet - Page 2

• Manufacturer Part Number: ISL6228HIEVAL3Z
• Description: EVALUATION BOARD FOR ISL6228HI
• Manufacturer: Intersil
• Series: Robust Ripple Regulator™ (R³)r

Specifications of ISL6228HIEVAL3Z

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 2, Non-Isolated
• Voltage - Output: 1.05V or 1.2V, 1.2V
• Current - Output: 20A, 20A
• Voltage - Input: 3.3 ~ 25V
• Regulator Topology: Buck
• Frequency - Switching: 270kHz, 300kHz
• Board Type: Fully Populated
• Utilized Ic / Part: ISL6228
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Test Set-up
Switch Descriptions
• S1: Channel-1 Enable
• S4: Channel-1 Dynamic Load
• S5: Channel-1 V
• S2: Channel-2 Enable
• S3: Channel-2 Dynamic Load
5V
V
V
- OFF: Short the Channel-1 EN pin to GND (disable
- ON: Allow the Channel-1 EN pin to pull-up to +5V
- OFF: On-board Channel-1 dynamic load disabled
- ON: On-board Channel-1 dynamic load enabled
- OFF: V
- ON: Parallel R
- OFF: Short the Channel-2 EN pin to GND (disable
- ON: Allow the Channel-2 EN pin to pull-up to +5V
- OFF: On-board Channel-2 dynamic load disabled
- ON: On-board Channel-2 dynamic load enabled
+
+
IN2
_
_
IN1
+
_
PWM)
(enable PWM)
PWM)
(enable PWM)
V
O1
O1
INCREASE
TP1
TP2
J1
J2
J14
J13
is 1.05V, determined by R
FIGURE 1. TEST SET-UP
O
49
Increase
with R
ISL6228HIEVAL3Z
S5
15
2
S2
S1
. V
OFF
OFF
J3
J4
ON
ON
O1
TP15
is 1.2V.
S4
S3
+
J5
J6
OFF
OFF
ON
ON
12V
+
15
TP11
TP12
TP14
TP13
V
_
TP16
and R
_
J10
J12
J11
J7
J8
J9
+
Application Note 1322
READING
23
V
V
O1
.
READING
_
V
O2
V
V
+
_
_
+
O2
O1
Test Point Descriptions
• J4: Scope-probe socket for measuring PHASE1
• J6: Scope-probe socket for measuring V
• J12: Scope-probe socket for measuring the current of the
• J3: Scope-probe socket for measuring the PHASE2 node
• J5: Scope-probe socket for measuring V
• J11: Scope-probe socket for measuring the current of the
• TP1: Monitor the 5V positive input
• TP2: Monitor the 5V return input
• TP3: Monitor the PGOOD2 pin
• TP4: Monitor the PGOOD1 pin
• TP5: The common node of R
• TP6: The common node of R
• TP7: The V
• TP8: The V
• TP9: Monitor the V
• TP10: Monitor the V
• TP11: Monitor the positive V
• TP12: Monitor the V
• TP13: Monitor the positive V
• TP14: Monitor the V
• TP15: Monitor the 12V positive input
• TP16: Monitor the 12V return input
• TP17: Monitor the EN1 pin
• TP18: Monitor the gate of transistor Q
• TP19: Monitor the EN2 pin
• TP20: Monitor the V
• TP21: Monitor the V
Channel-1 on-board transient-load emulator
Channel-2 on-board transient-load emulator
Channel-1 loop gain measurement.
Channel-2 loop gain measurement
measurement.
measurement.
O1
O2
side of R
side of R
IN1
IN1
O1
O2
IN2
IN2
positive input
24
25
return output
return output
return input
positive input
return input
; Useful for Channel-1 loop gain
; Useful for Channel-1 loop gain
O1
O2
24
25
output
output
and R
and R
18
20
23
; Useful for
; Useful for
O1
O2
August 22, 2007
AN1322.1