HIP6004E Intersil Corporation, HIP6004E Datasheet - Page 10

• Manufacturer Part Number: HIP6004E
• Description: Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor
• Manufacturer: Intersil Corporation

FIGURE 10. UPPER GATE DRIVE - DIRECT V
Component Selection Notes:
C
C
L
L
2
1
OUT
IN
- Core: micrometals T68-52A; winding: 7 turns of 16AWG.
- Core: micrometals T50-52; winding: 5 turns of 16AWG.
- Each 330 F 25W VDC, Rubycon ZA series or equivalent.
HIP6004E
-
+
- Each 1000 F 6.3W VDC, Rubycon ZA series or equivalent.
+12V
V
IN
=
VCC
+12V
OR
+5V
GND
BOOT
UGATE
PHASE
LGATE
PGND
0.1 F
F 1
10
VID25mV
L1 - 1 H
VID0
VID1
VID2
VID3
VSEN
Q
Q
3x1000 F
+5V OR LESS
FB
1
2
RT
SS
0.033 F
3.32K
0.1 F
FIGURE 11. MICROPROCESSOR DC-DC CONVERTER
10nF
C
10
3
1
20
4
5
6
7
8
IN
D
CC
D/A
2
NOTE:
V
NOTE:
V
G-S
DRIVE OPTION
470pF
27
G-S
OSC
+
-
56K
HIP6004E
V
V
CC
PROTECTION
+12V
CC
MONITOR
18
VCC
COMP
9
-5V
AND
-
+
HIP6004E
2N6394
OVP
19
11
2K
GND
D
D
Q
Q
1
2
1
2
15
Schottky Selection
Rectifier D
during the dead time between turning off the lower MOSFET
and turning on the upper MOSFET. The diode must be a
Schottky type to prevent the lossy parasitic MOSFET body
diode from conducting. It is acceptable to omit the diode and let
the body diode of the lower MOSFET clamp the negative
inductor swing, but efficiency will drop one or two percent as a
result. The diode’s rated reverse breakdown voltage must be
greater than the maximum input voltage.
HIP6004E DC-DC Converter Application
Circuit
Figure 11 shows an application circuit of a DC-DC Converter
for a microprocessor. Detailed information on the circuit,
including a complete bill-of-materials and circuit board
description, can be found in AN9916. This application note
also contains the application information for ISL6525, an
controller IC designed to meet the VTT voltage and power-
up sequencing specification given in the Intel VRM8.5.
12
14
13
17
16
- Intersil MOSFET; HUF76137.
- Intersil MOSFET; HUF76139.
D1
- 1N4148 or equivalent.
- 3A, 40V Schottky, Motorola MBR340 or equivalent.
2
OCSET
PGOOD
BOOT
UGATE
PHASE
LGATE
PGND
1 F
2
1000pF
is a clamp that catches the negative inductor swing
1.8K
Q2
Q1
0.1 F
D
2
5x1000 F
2.4 H
L2
C
OUT
+V
OUT