MIC4103/4104
100V Half-Bridge MOSFET Drivers with
3A/2A Sinking/Sourcing Current
General Description
The MIC4103 and MIC4104 are high-frequency, 100V half-
bridge MOSFET drivers with faster turn-off characteristics
than the MIC4100 and MIC4101 drivers. They feature fast
24ns propagation delay times and 6ns driver fall times.
The low-side and high-side gate drivers are independently
controlled and matched to within 3ns (typical). The
MIC4103 has CMOS input thresholds and the MIC4104
has TTL input thresholds. The MIC4103/4 include a high-
voltage internal diode that charges the high-side gate drive
bootstrap capacitor.
A robust, high-speed, and low-power level shifter provides
clean level transitions to the high-side output. The robust
operation of the MIC4103/4 ensures the outputs are not
affected by supply glitches, HS ringing below ground, or
HS slewing with high-speed voltage transitions.
Undervoltage protection is provided on both the low-side
and high-side drivers.
The MIC4103 and MIC4104 are available in an 8-pin SOIC
package with an operating junction temperature range of
–40°C to +125°C.
Datasheets and support documentation are available on
Micrel’s web site at:
www.micrel.com.
Features
•
Asymmetrical, low impedance outputs drive 1000pF
load with 10ns rise times and 6ns fall times
•
Bootstrap supply maximum voltage to 118V DC
•
Supply voltage up to 16V
•
Drives high and low-side N-Channel MOSFETs with
independent inputs
•
CMOS input thresholds (MIC4103)
•
TTL input thresholds (MIC4104)
•
On-chip bootstrap diode
•
Fast 24ns propagation times
•
Low power consumption
•
Supply undervoltage protection
•
Typical 2.5Ω pull-up and 1.25Ω pull-down output driver
resistance
•
–40°C to +125°C junction temperature range
Applications
•
•
•
•
•
High-voltage buck converters
Full- and half-bridge power topologies
Active clamp forward converter
Two switch forward topologies
Interface to digital controllers
Typical Application
100V Buck Regulator Solution
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
November 12, 2014
Revision 3.0
Micrel, Inc.
MIC4103/4104
Ordering Information
Part Number
MIC4103YM
MIC4104YM
Input
CMOS
TTL
Junction Temperature Range
–40° to +125°C
–40° to +125°C
Package
8-Pin SOIC
8-Pin SOIC
Pin Configuration
8-Pin SOIC (M)
(Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
VDD
HB
HO
HS
HI
LI
VSS
LO
Pin Function
Positive Supply to lower gate drivers. Decouple this pin to VSS (Pin 7). Bootstrap diode connected
to HB (pin 2).
High-Side Bootstrap supply. External bootstrap capacitor is required. Connect positive side of
bootstrap capacitor to this pin. Bootstrap diode is on-chip.
High-Side Output. Connect to gate of High-Side power MOSFET.
High-Side Source connection. Connect to source of High-Side power MOSFET. Connect negative
side of bootstrap capacitor to this pin.
High-Side input.
Low-Side input.
Chip negative supply, generally will be ground.
Low-Side Output. Connect to gate of Low-Side power MOSFET.
November 12, 2014
2
Revision 3.0
Micrel, Inc.
MIC4103/4104
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
, V
HB
– V
HS
) .....................
−0.3V
to 18V
Input Voltages (V
LI,
V
HI
) ........................
−0.3V
to V
DD
+ 0.3V
Voltage on LO (V
LO
) .............................
−0.3V
to V
DD
+ 0.3V
Voltage on HO (V
HO
) ..................... V
HS
−
0.3V to V
HB
+ 0.3V
Voltage on HS (continuous) .............................
−1V
to 110V
Voltage on HB .............................................................. 118V
Average Current in VDD to HB Diode ....................... 100mA
Junction Temperature (T
J
) ........................
−55°C
to +150°C
Storage Temperature (T
s
) .........................
−60°C
to +150°C
ESD Rating.................................................................Note
3
Operating Ratings
(2)
Supply Voltage (V
DD
) ........................................ +9V to +16V
Voltage on HS ..................................................
−1V
to 100V
Voltage on HS (repetitive transient) .................
−5V
to 105V
HS Slew Rate ............................................................ 50V/ns
Voltage on HB and
VHS ............................................ V
HS
+ 8V to V
HS
+ 16V
VDD .......................................... V
DD
- 1V to V
DD
+ 100V
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
SOIC-8L (θ
JA
) ................................................... 140°C/W
Electrical Characteristics
(4,
5)
V
DD
= V
HB
= 12V; V
SS
= V
HS
= 0V; No load on LO or HO; T
A
= +25°C; unless noted.
Bold
values indicate –40°C
≤
TJ
≤
+125°C.
Symbol
Parameter
Condition
Min.
Typ.
Max.
150
200
4.0
150
200
2.5
3
1
30
Units
Supply Current
I
DD
I
DDO
I
HB
I
HBO
I
HBS
V
DD
Quiescent Current
V
DD
Operating Current
Total HB Quiescent Current
Total HB Operating Current
HB to V
SS
Current, Quiescent
LI = HI = 0V
f = 500kHz
LI = HI = 0V
f = 500kHz
V
HS
= V
HB
= 110V
40
3.0
25
1.5
0.05
µA
mA
µA
mA
µA
Input Pins: MIC4103 (CMOS Input)
V
IL
V
IH
V
IHYS
R
I
V
IL
V
IH
R
I
V
DDR
V
DDH
V
HBR
V
HBH
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only
Low-Level Input Voltage Threshold
High-Level Input Voltage Threshold
Input Voltage Hysteresis
Input Pull-Down Resistance
Low-Level Input Voltage Threshold
High-Level Input Voltage Threshold
Input Pull-Down Resistance
V
DD
Rising Threshold
V
DD
Threshold Hysteresis
HB Rising Threshold
HB Threshold Hysteresis
4
3
5.3
5.7
0.4
7
8
500
V
V
V
kΩ
V
2.2
500
8.0
8.0
V
kΩ
V
V
V
V
100
0.8
100
6.5
6.0
200
1.5
1.5
200
7.4
0.5
7.0
0.4
Input Pins: MIC4104 (TTL Input)
Undervoltage Protection
Electrical Characteristics
(4,
5)
(Continued)
November 12, 2014
3
Revision 3.0
Micrel, Inc.
MIC4103/4104
V
DD
= V
HB
= 12V; V
SS
= V
HS
= 0V; No load on LO or HO; T
A
= +25°C; unless noted.
Bold
values indicate –40°C
≤
TJ
≤
+125°C.
Symbol
Parameter
Condition
Min.
Typ.
Max.
0.55
0.70
0.8
1.0
1.5
2.0
0.3
0.4
0.3
0.45
Units
Bootstrap Diode
V
DL
V
DH
R
D
Low-Current Forward Voltage
High-Current Forward Voltage
Dynamic Resistance
I
VDD-HB
= 100µA
I
VDD-HB
= 100mA
I
VDD-HB
= 100mA
0.4
0.7
1.0
V
V
Ω
LO Gate Driver
V
OLL
V
OHL
I
OHL
I
OLL
Low-Level Output Voltage
High-Level Output Voltage
Peak Sink Current
Peak Source Current
I
LO
= 160mA
I
LO
=
−100mA,
V
OHL
= V
DD
- V
LO
V
LO
= 0V
V
LO
= 12V
0.18
0.25
3
2
0.3
0.4
0.3
0.45
V
V
A
A
HO Gate Driver
V
OLH
V
OHH
I
OHH
I
OLH
Low-Level Output Voltage
High-Level Output Voltage
Peak Sink Current
Peak Source Current
Lower Turn-Off Propagation Delay
(LI Falling to LO Falling)
Upper Turn-Off Propagation Delay
(HI Falling to HO Falling)
Lower Turn-On Propagation Delay
(LI Rising to LO Rising)
Upper Turn-On Propagation Delay
(HI Rising to HO Rising)
Lower Turn-Off Propagation Delay
(LI Falling to LO Falling)
Upper Turn-Off Propagation Delay
(HI Falling to HO Falling)
Lower Turn-On Propagation Delay
(LI Rising to LO Rising)
Upper Turn-On Propagation Delay
(HI Rising to HO Rising)
Delay Matching: Lower Turn-On and
Upper Turn-Off
Delay Matching: Lower Turn-Off and
Upper Turn-On
Output Rise Time
Output Fall Time
C
L
= 1000pF
C
L
= 1000pF
I
HO
= 160mA
I
HO
=
−100mA,
V
OHH
= V
HB
– V
HO
V
HO
= 0V
V
HO
= 12V
0.22
0.25
3
2
V
V
A
A
Switching Specifications
t
LPHL
t
HPHL
t
LPLH
t
HPLH
t
LPHL
t
HPHL
t
LPLH
t
HPLH
t
MON
t
MOFF
t
RC
t
FC
(MIC4103)
(MIC4103)
(MIC4103)
(MIC4103)
(MIC4104)
(MIC4104)
(MIC4104)
(MIC4104)
24
24
24
24
24
24
24
24
3
3
10
6
45
45
45
45
45
45
45
45
8
10
8
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Electrical Characteristics
(4,
5)
(Continued)
V
DD
= V
HB
= 12V; V
SS
= V
HS
= 0V; No load on LO or HO; T
A
= +25°C; unless noted.
Bold
values indicate –40°C
≤
TJ
≤
+125°C.
November 12, 2014
4
Revision 3.0
Micrel, Inc.
Symbol
Parameter
Condition
Min.
Typ.
MIC4103/4104
Max.
0.6
0.8
0.3
0.4
50
10
Units
Switching Specifications (Continued)
t
R
t
F
t
PW
t
BS
Notes:
5. All voltages relative to Pin 7, V
SS
unless otherwise specified
6. Guaranteed by design. Not production tested.
Output Rise Time (3V to 9V)
Output Fall Time (3V to 9V)
Minimum Input Pulse Width that
Changes the Output
Bootstrap Diode Turn-On or
Turn-Off Time
C
L
= 0.1µF
C
L
= 0.1µF
Note 6
0.4
0.2
µs
µs
ns
ns
November 12, 2014
5
Revision 3.0
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