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PDF MIC4102 Data sheet ( Hoja de datos )
| Número de pieza | MIC4102 | |
| Descripción | 100V Half-Bridge MOSFET Driver | |
| Fabricantes | Microchip | |
| Logotipo |  |
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MIC4102
100V Half-Bridge MOSFET Driver
with Anti-Shoot-Through Protection
Features
• Drives High- and Low-Side N-Channel MOSFETs
with Single Input
• Adaptive Anti-Shoot-Through Protection
• Low-Side Drive Disable Pin
• Bootstrap Supply Voltage to 118V DC
• Supply Voltage up to 16V
• TTL Input Thresholds
• On-Chip Bootstrap Diode
• Fast 30 ns Propagation Times
• Drives 1000 pF Load with 10 ns Rise and Fall
Times
• Low Power Consumption
• Supply Undervoltage Protection
• 2.5Ω Pull-Up, 1.5Ω Pull-Down Output Resistance
• Space Saving SOIC-8L Package
• –40°C to +125°C Junction Temperature Range
Applications
• High Voltage Buck Converters
• Networking/Telecom Power Supplies
• Automotive Power Supplies
• Current-Fed Push-Pull Power Topologies
• Ultrasonic Drivers
• Avionic Power Supplies
General Description
The MIC4102 is a high frequency, 100V half-bridge
MOSFET driver IC featuring internal anti-shoot-through
protection. The low-side and high-side gate drivers are
controlled by a single input signal to the PWM pin. The
MIC4102 implements adaptive anti-shoot-through
circuitry to optimize the switching transitions for
maximum efficiency. The single input control also
reduces system complexity and greatly simplifies the
overall design.
The MIC4102 also features a low-side drive disable
pin. This gives the MIC4102 the capability to operate in
a non-synchronous buck mode. This feature allows the
MIC4102 to start up into applications where a bias
voltage may already be present without pulling the
output voltage down.
Undervoltage protection on both the low-side and
high-side supplies forces the outputs low. An on-chip
bootstrap diode eliminates the discrete diode required
with other driver ICs.
The MIC4102 is available in the SOIC-8L package with
a junction operating range from –40°C to +125°C.
Typical Application Schematic
9V TO 16V BIAS
MIC4102
SOIC-8L
100V SUPPLY
PWM
CONTROLLER
VDD
HB
MIC4102
HI HO
LS HS
VOUT
GND
LO
2016 Microchip Technology Inc.
DS20005575A-page 1
1 page  
MIC4102
TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: VDD = VHB = 12V; VSS = VHS = 0V; No load on LO or HO; TA = +25°C; unless noted.
Bold values are valid for –40°C ≤ TJ ≤ +125°C. (Note 1).
Parameters
Sym. Min. Typ. Max. Units
Conditions
HO Gate Driver
Low Level Output Voltage
VOLH
— 0.22
——
High Level Output Voltage
VOHH
— 0.25
——
Peak Sink Current
Peak Source Current
IOHH
IOLH
—3
—2
Switching Specifications (Anti-Shoot-Through Circuitry)
Delay between PWM going high to
LO going low
tLOOFF
— 30
——
Voltage threshold for LO MOSFET
to be considered OFF
VLOOFF
—
1.7
Delay between LO OFF to HO
going High
tHOON
— 30
——
Delay between PWM going Low to
HO going low
tHOOFF
—
—
45
—
Switch Node Voltage Threshold
when HO turns off
VSWth
1 2.5
Delay between HO MOSFET being
considered off to LO turning ON
tLOON
— 30
——
Delay between LS going low and
LO turning OFF
tLSOFF
— 36
——
Forced LO ON, if VLOTH is not
detected
tSWTO
120 250
0.3
0.4
0.3
0.45
—
—
45
60
—
50
60
65
70
4
60
70
45
70
450
V
V
A
A
ns
V
ns
ns
V
ns
ns
ns
IHO = 160 mA
IHO = –100 mA,
VOHH = VHB – VHO
VHO = 0V
VHO = 12V
—
—
—
—
—
—
CL = 1000 pF
—
Switching Specifications
Either Output Rise Time (3V to 9V) tR
Either Output Fall Time (3V to 9V) tF
Either Output Rise Time (3V to 9V) tR
— 10 —
—6—
— 0.33 0.6
— — 0.8
Either Output Fall Time (3V to 9V) tF
— 0.2 0.3
— — 0.4
Minimum Input Pulse Width that
changes the output with LS = 5V
tPW
— 40 60
Minimum Output Pulse Width on
HO with min pulse width on PWM
with LS = 5V
tPW
— 15 —
Note 1:
2:
3:
Specification for packaged product only.
All voltages relative to Pin 7, VSS, unless otherwise specified.
Guaranteed by design. Not production tested.
ns
ns
µs
µs
ns
ns
CL = 1000 pF
CL = 1000 pF
CL = 0.1 µF
CL = 0.1 µF
CL = 0, Note 3
CL = 0, Note 3
2016 Microchip Technology Inc.
DS20005575A-page 5
5 Page 
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
Package Type
MIC4102
SOIC-8L (M)
(Top View)
VDD 1
HB 2
HO 3
HS 4
8 LO
7 VSS
6 LS
5 PWM
MIC4102
TABLE 3-1: PIN FUNCTION TABLE
Pin Number Pin Name
Description
1 VDD Positive supply to lower gate drivers. Decouple this pin to VSS (Pin 7). Bootstrap diode
connected to HB (Pin 2).
2 HB High-Side Bootstrap supply. External bootstrap capacitor is required. Connect positive
side of bootstrap capacitor to this pin. Bootstrap diode is on-chip.
3 HO High-Side Output. Connect to gate of high-side power MOSFET.
4 HS High-Side Source connection. Connect to source of high-side power MOSFET.
Connect negative side of bootstrap capacitor to this pin.
5 PWM Control Input. PWM high signal makes high-side HO output high and low-side LO
output low. PWM low signal makes high-side HO output low and low-side LO output
high.
6 LS Low-Side Disable. When pulled low, this control signal immediately terminates the
low-side LO output drive. The low-side LO output drive will remain low until this signal
is removed. HS drive is not affected by the LS signal. The logic table is below (see
Table 3-2).
7 VSS Chip negative supply. Generally, this will be grounded.
8 LO Low-Side Output. Connect to gate of low-side power MOSFET.
TABLE 3-2: LS PIN LOGIC TABLE
LS PWM
00
01
10
11
LO
0
0
1
0
HO
0
1
0
1
2016 Microchip Technology Inc.
DS20005575A-page 11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet MIC4102.PDF ] | |
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