MIC4100/1
100V Half Bridge MOSFET Drivers
General Description
The MIC4100/1 are high frequency, 100V Half Bridge
MOSFET driver ICs featuring fast 30ns propagation delay
times. The low-side and high-side gate drivers are
independently controlled and matched to within 3ns
typical. The MIC4100 has CMOS input thresholds, and the
MIC4101 has TTL input thresholds. The MIC4100/1
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 MIC4100/1 ensures the outputs are not
affected by supply glitches, HS ringing below ground, or
HS slewing with high speed voltage transitions. Under-
voltage protection is provided on both the low-side and
high-side drivers.
The MIC4100 is available in the SOIC-8L package with a
junction operating range from –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
•
Bootstrap supply max voltage to 118V DC
•
Supply voltage up to 16V
•
Drives high- and low-side N-Channel MOSFETs with
independent inputs
•
CMOS input thresholds (MIC4100)
•
TTL input thresholds (MIC4101)
•
On-chip bootstrap diode
•
Fast 30ns propagation times
•
Drives 1000pF load with 10ns rise and fall times
•
Low power consumption
•
Supply under-voltage protection
•
3Ω pull up , 3Ω pull down output resistance
•
Space saving SOIC-8L package
•
–40°C to +125°C junction temperature range
Applications
•
•
•
•
High voltage buck converters
Push-pull converters
Full- and half-bridge converters
Active clamp forward converters
___________________________________________________________________________________________________________
Typical Application
9V to 16V Bias
100V Supply
VDD
HB
PWM
Controller
HI
LI
MIC4100
SO-8
HO
HS
V
OUT
GND
LO
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
March 2006
M9999-031506
Micrel, Inc.
MIC4100/1
Ordering Information
Part Number
Standard
MIC4100BM
MIC4101BM
Pb-Free
MIC4100YM
MIC4101YM
Input
CMOS
TTL
Junction Temp. Range
–40° to +125°C
–40° to +125°C
Package
SOIC-8L
SOIC-8L
Pin Configuration
VDD 1
HB 2
HO 3
HS 4
8 LO
7 VSS
6 LI
5 HI
SOIC-8L (M)
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.
March 2006
2
M9999-031506
Micrel, Inc.
MIC4100/1
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
EDS Rating
(3)
..............................................................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 ...................................V
HS
+ 8V to V
HS
+ 16V
and............................................ 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)
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< T
J
< +125°C.
Parameter
Supply Current
V
DD
Quiescent Current
V
DD
Operating Current
Total HB Quiescent Current
Total HB Operating Current
HB to V
SS
Current, Quiescent
HB to V
SS
Current, Operating
Low Level Input Voltage
Threshold
High Level Input Voltage
Threshold
Input Voltage Hysteresis
Input Pulldown Resistance
Symbol
Condition
Min
Typ
40
2.5
25
1.4
0.05
10
Max
150
Units
I
DD
I
DDO
I
HB
I
HBO
I
HBS
I
HBSO
LI = HI = 0V
f = 500kHz
LI = HI = 0V
f = 500kHz
V
HS
= V
HB
= 110V
f = 500kHz
4
200
3.4
150
µ
A
mA
200
2.5
µ
A
mA
3
1
µ
A
µ
A
Input Pins: MIC4100 (CMOS Input )
V
IL
V
IH
V
IHYS
R
I
5.3
5.7
0.4
7
3
8
100
0.8
200
1.5
1.5
V
V
V
500
K
Ω
Input Pins: MIC4101 (TTL)
Low Level Input Voltage
Threshold
High Level Input Voltage
Threshold
Input Pulldown Resistance
V
IL
V
IH
R
I
V
2.2
500
V
K
Ω
100
200
March 2006
3
M9999-031506
Micrel, Inc.
MIC4100/1
Parameter
Under Voltage Protection
V
DD
Rising Threshold
V
DD
Threshold Hysteresis
HB Rising Threshold
HB Threshold Hysteresis
Symbol
V
DDR
V
DDH
V
HBR
V
HBH
Condition
Min
6.5
6.0
Typ
7.4
0.5
7.0
0.4
0.4
0.7
1.0
Max
8.0
8.0
Units
V
V
V
V
Bootstrap Diode
Low-Current Forward Voltage
High-Current Forward Voltage
Dynamic Resistance
V
DL
V
DH
R
D
I
VDD-HB
= 100
µ
A
I
VDD-HB
= 100mA
I
VDD-HB
= 100mA
0.55
0.70
0.8
V
V
1.0
1.5
2.0
0.22
0.25
2
2
0.22
0.25
2
2
0.3
0.3
Ω
LO Gate Driver
Low Level Output Voltage
High Level Output Voltage
Peak Sink Current
Peak Source Current
V
OLL
V
OHL
I
OHL
I
OLL
I
LO
= 100mA
I
LO
= -100mA, V
OHL
= V
DD
- V
LO
V
LO
= 0V
V
LO
= 12V
0.4
0.3
V
V
A
A
0.45
HO Gate Driver
Low Level Output Voltage
High Level Output Voltage
Peak Sink Current
Peak Source Current
V
OLH
V
OHH
I
OHH
I
OLH
I
HO
= 100mA
I
HO
= -100mA, V
OHH
= V
HB
– V
HO
V
HO
= 0V
V
HO
= 12V
0.4
0.3
V
V
A
A
0.45
March 2006
4
M9999-031506
Micrel, Inc.
MIC4100/1
Parameter
Switching Specifications
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
Either Output Rise/Fall Time
Either Output Rise/Fall Time
(3V to 9V)
Minimum Input Pulse Width that
Changes the Output
Bootstrap Diode Turn-On or
Turn-Off Time
Notes:
Symbol
Condition
Min
Typ
27
27
27
27
31
31
31
31
3
3
Max
45
45
45
45
55
55
55
55
8
Units
t
LPHL
t
HPHL
t
LPLH
t
HPLH
t
LPHL
t
HPHL
t
LPLH
t
HPLH
t
MON
t
MOFF
t
RC ,
t
FC
t
R
, t
F
t
PW
t
BS
(MIC4100)
(MIC4100)
(MIC4100)
(MIC4100)
(MIC4101)
(MIC4101)
(MIC4101)
(MIC4101)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
8
10
C
L
= 1000pF
C
L
= 0.1
µ
F
10
0.4
0.6
0.8
50
10
µ
s
ns
ns
Note 6
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. All voltages relative to pin7, V
SS
unless otherwise specified
6. Guaranteed by design. Not production tested.
March 2006
5
M9999-031506
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