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HIP6004E Datasheet(数据表) 4 Page - Intersil Corporation

部件型号  HIP6004E
说明  Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
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HIP6004E Datasheet(HTML) 4 Page - Intersil Corporation

 
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4
Functional Pin Descriptions
VSEN (Pin 1)
This pin is connected to the converter’s output voltage. The
PGOOD and OVP comparator circuits use this signal to
report output voltage status and for overvoltage protection.
OCSET (Pin 2)
Connect a resistor (ROCSET) from this pin to the drain of the
upper MOSFET. ROCSET, an internal 200µA current source
(IOCSET), and the upper MOSFET on-resistance (rDS(ON))
set the converter overcurrent (OC) trip point according to the
following equation:
An over-current trip cycles the soft-start function.
SS (Pin 3)
Connect a capacitor from this pin to ground. This capacitor,
along with an internal 10
µA current source, sets the soft-
start interval of the converter.
VID25mV-VID3 (Pins 4-8)
VID25mV - VID3 are the input pins to the 5-bit DAC. The
states of these five pins program the internal voltage
reference (DACOUT). The level of DACOUT sets the
converter output voltage. It also sets the PGOOD and OVP
thresholds. Table 1 specifies DACOUT for the all
combinations of DAC inputs.
COMP (Pin 9) and FB (Pin 10)
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.
GND (Pin 11)
Signal ground for the IC. All voltage levels are measured with
respect to this pin.
PGOOD (Pin 12)
PGOOD is an open collector output used to indicate the
status of the converter output voltage. This pin is pulled low
when the converter output is not within
±10% of the
DACOUT reference voltage.
PHASE (Pin 13)
Connect the PHASE pin to the upper MOSFET source. This
pin is used to monitor the voltage drop across the MOSFET
for overcurrent protection. This pin also provides the return
path for the upper gate drive.
UGATE (Pin 14)
Connect UGATE to the upper MOSFET gate. This pin
provides the gate drive for the upper MOSFET.
BOOT (Pin 15)
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.
Typical Performance Curves
FIGURE 1. RT RESISTANCE vs FREQUENCY
FIGURE 2. BIAS SUPPLY CURRENT vs FREQUENCY
10
100
1000
SWITCHING FREQUENCY (kHz)
10
100
1000
RT PULLUP
TO +12V
RT PULLDOWN TO VSS
100
200
300
400
500
600
700
800
900
1000
SWITCHING FREQUENCY (kHz)
CGATE = 3300pF
CGATE = 1000pF
CGATE = 10pF
CUPPER = CLOWER = CGATE
80
70
60
50
40
30
20
10
0
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
VSEN
OCSET
SS
VID25mV
VID0
VID1
VID3
VID2
COMP
FB
RT
VCC
LGATE
PGND
OVP
BOOT
UGATE
PHASE
PGOOD
GND
I
PEAK
I
OCSET x ROCSET
r
DS ON
()
-----------------------------------------------------
=
HIP6004E




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