HIP6006CBZ-T View Datasheet(PDF) - Renesas Electronics
Part Name
Description
MFG CO.
HIP6006CBZ-T
Renesas Electronics
HIP6006CBZ-T Datasheet PDF : 12 Pages
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HIP6006
Typical Performance Curves
1000
100
10
RT PULLUP
TO +12V
RT PULLDOWN
TO VSS
10
100
1000
SWITCHING FREQUENCY (kHz)
FIGURE 1. RT RESISTANCE vs FREQUENCY
Functional Pin Description
RT 1
OCSET 2
SS 3
COMP 4
FB 5
EN 6
GND 7
14 VCC
13 PVCC
12 LGATE
11 PGND
10 BOOT
9 UGATE
8 PHASE
RT (Pin 1)
This pin provides oscillator switching frequency adjustment. By
placing a resistor (RT) from this pin to GND, the nominal
200kHz switching frequency is increased according to the
following equation:
Fs 200kHz + R--5---T------1k---0----6--
(RT to GND)
Conversely, connecting a pull-up resistor (RT) from this pin to
VCC reduces the switching frequency according to the
following equation.:
Fs 200kHz – -R-4---T------1k---0----7--
(RT to 12V)
OCSET (Pin 2)
Connect a resistor (ROCSET) from this pin to the drain of the
upper MOSFET. ROCSET, an internal 200A current source
(IOCS), and the upper MOSFET on-resistance (rDS(ON)) set
the converter over-current (OC) trip point according to the
following equation:
IPEAK = I--O-----C----Sr--D-----S--R----O-O---N-C-----S----E---T--
An over-current trip cycles the soft-start function.
80
70
60
CGATE = 3300pF
50
40
30
CGATE = 1000pF
20
10
CGATE = 10pF
0
100 200 300 400 500 600 700 800 900 1000
SWITCHING FREQUENCY (kHz)
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
SS (Pin 3)
Connect a capacitor from this pin to ground. This capacitor,
along with an internal 10A current source, sets the soft-start
interval of the converter.
COMP (Pin 4) and FB (Pin 5)
COMP and FB are the available external pins of the error
amplifier. The FB pin is the inverting input of the error amplifier
and the COMP pin is the error amplifier output. These pins are
used to compensate the voltage-control feedback loop of the
converter.
EN (Pin 6)
This pin is the open-collector enable pin. Pull this pin below 1V
to disable the converter. In shutdown, the soft start pin is
discharged and the UGATE and LGATE pins are held low.
GND (Pin 7)
Signal ground for the IC. All voltage levels are measured with
respect to this pin.
PHASE (Pin 8)
Connect the PHASE pin to the upper MOSFET source. This
pin is used to monitor the voltage drop across the MOSFET for
over-current protection. This pin also provides the return path
for the upper gate drive.
UGATE (Pin 9)
Connect UGATE to the upper MOSFET gate. This pin provides
the gate drive for the upper MOSFET.
BOOT (Pin 10)
This pin provides bias voltage to the upper MOSFET driver. A
bootstrap circuit may be used to create a BOOT voltage
suitable to drive a standard N-Channel MOSFET.
PGND (Pin 11)
This is the power ground connection. Tie the lower MOSFET
source to this pin.
FN4306 Rev.3.00
April 1, 2005
Page 4 of 12
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