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HIP6008 View Datasheet(PDF) - Intersil

Part Name
Description
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HIP6008 Datasheet PDF : 12 Pages
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HIP6008
BAND GAP
REFERENCE
VID0
VID1
VID2
VID3
1.26V
21.5k
10.7k
5.4k
DACOUT
+
-
1.7k
ERROR
AMPLIFIER
+
-
COMP
2.7k
DAC
FB
2.9k
FIGURE 5. DAC FUNCTION SCHEMATIC
HIP6008
UGATE
PHASE
VIN
Q1
LO
VOUT
CIN
D2
CO
RETURN
FIGURE 6. PRINTED CIRCUIT BOARD POWER AND
GROUND PLANES OR ISLANDS
Figure 6 shows the critical power components of the
converter. To minimize the voltage overshoot the
interconnecting wires indicated by heavy lines should be
part of ground or power plane in a printed circuit board. The
components shown in Figure 6 should be located as close
together as possible. Please note that the capacitors CIN
and CO each represent numerous physical capacitors.
Locate the HIP6008 within 3 inches of the MOSFET, Q1.
The circuit traces for the MOSFET’s gate and source
connections from the HIP6008 must be sized to handle up to
1A peak current.
BOOT
D1
CBOOT
+VIN
Q1 LO
HIP6008 PHASE
VCC
SS
+12V
D2 CO
CSS
GND
CVCC
VOUT
FIGURE 7. PRINTED CIRCUIT BOARD SMALL SIGNAL
LAYOUT GUIDELINES
Figure 7 shows the circuit traces that require additional
layout consideration. Use single point and ground plane
construction for the circuits shown. Minimize any leakage
current paths on the SS PIN and locate the capacitor, CSS
close to the SS pin because the internal current source is
only 10µA. Provide local VCC decoupling between VCC and
GND pins. Locate the capacitor, CBOOT as close as practical
to the BOOT and PHASE pins.
Feedback Compensation
OSC
VIN
DRIVER
PWM
COMPARATOR
LO
-
VOSC
+
PHASE
CO
VOUT
ZFB
VE/A
-
ZIN
+
ERROR REFERENCE
AMP
ESR
(PARASITIC)
DETAILED COMPENSATION COMPONENTS
C2
C1 R2
ZFB
VOUT
ZIN
C3 R3
R1
COMP
FB
-
+
HIP6008
DACOUT
FIGURE 8. VOLTAGE - MODE BUCK CONVERTER COMPEN-
SATION DESIGN
7
 

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