MIC4608
600V Half Bridge MOSFET or IGBT Driver
General Description
The MIC4608 is a 600V Half Bridge IGBT or MOSFET
driver. The MIC4608 features a 450ns propagation delay
including a 200ns input filtering time to prevent unwanted
pulses. The low-side and high-side gate drivers are
independently controlled (with shoot thru protection) or
controlled with a single PWM signal. The MIC4608 has
TTL input thresholds.
The robust operation of the MIC4608 ensures that 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 MIC4608 is available in a 14-pin SOIC package. The
MIC4608 has 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
•
Gate drive supply voltage up to 20V
•
Drives high-side and low-side N-Channel MOSFETs or
IGBTs with independent inputs or with a single PWM
signal
•
±50V/ns dV/dt immunity
•
TTL input thresholds
•
200ns input filtering time
•
Shoot thru protection
•
Low power consumption
•
Supply undervoltage protection
•
–40°C to +125°C junction temperature range
Applications
•
Full- and half-bridge motor drive
•
Industrial controls
•
White goods
Typical Application
Half–Bridge Motor Driver
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
May 12, 2015
Revision 1.0
Micrel, Inc.
MIC4608
Ordering Information
Part Number
MIC4608YM
Input
TTL
Junction Temperature Range
–40°C to +125°C
Package
14-Pin SOIC
Pin Configuration
14-Pin SOIC (M)
(Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
EN
VDD
VDD
NC
HB
HO
HS
NC
HI
LI
VSS
LO
ST
NC
Pin Function
A high level on this pin enables the driver. A low level disables the drivers and places the part in a
low quiescent current state. This pin has an internal 300kΩ pull-down resistor to V
SS
.
Input supply for gate drivers. Decouple this pin to VSS with a >2.2µF capacitor. Bootstrap diode
connected to HB.
Input supply for gate drivers. Connect directly to pin 2.
No connection.
High-side bootstrap supply. External bootstrap capacitor is required. Connect bootstrap capacitor
across this pin and HS. An external bootstrap diode is connected to this pin as well.
High-side drive output. Connect to gate of the external low-side power MOSFET or IGBT.
High-side drive reference connection. Connect to source/emitter of the external high-side power
MOSFET or IGBT. Decouple this pin with the bootstrap capacitor to HB.
No connection
High-side drive input and PWM input for single signal drive. This pin has an internal 300kΩ pull-
down resistor to VSS.
Low-side drive input. This pin has an internal 300kΩ pull-down resistor to VSS.
Driver Reference supply input. Generally connected to power ground of external circuitry.
Low-side drive output. Connect to gate of the external low-side power MOSFET or IGBT.
State pin. PWM or Independent drive. Logic low allows for independent operation and logic high
allows for single input PWM drive operation. This pin has an internal 300kΩ pull-down resistor to
VSS.
No connection.
May 12, 2015
2
Revision 1.0
Micrel, Inc.
MIC4608
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
, V
HB
– V
HS
) ..................... –0.3V to 25V
Input Voltages (V
LI
, V
HI
, V
ST
, V
EN
).......... –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) ......................... –25V to +630V
Voltage on HB ............................................................ +655V
HS Slew Rate ............................................................ 50V/ns
Storage Temperature (T
S
) ......................... –60°C to +150°C
ESD Rating
(3)
HBM ...................................................................... 1.5kV
MM ......................................................................... 150V
Operating Ratings
(2)
Supply Voltage (V
DD
) .......................................... 10V to 20V
Input Voltages (V
LI
, V
HI
, V
ST
, V
EN
) ......................... 0V to V
DD
Voltage on HS (repetitive transient) ............5V–V
DD
to 600V
Voltage on HB ................................... V
HS
+10V to V
HS
+20V
and/or.......................................... V
DD
–1V to V
DD
+600V
Junction Temperature (T
J
) ........................ –40°C to +125°C
Junction Thermal Resistance
14-Pin SOIC (θ
JA
) ............................................ 105°C/W
Electrical Characteristics
(3)(4)
V
DD
= V
HB
= 20V; V
SS
= V
HS
= 0V; V
ST
= 0V; No load on LO or HO; T
A
= 25°C, unless noted.
Bold
values indicate –40°C≤ T
J
≤ +125°C.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
Supply Current
I
DD
I
DDSH
I
DDO
I
HB
I
HBO
V
DD
Quiescent Current
V
DD
Shutdown Current
V
DD
Operating Current
Total HB Quiescent Current
Total HB Operating Current
V
HI
= V
LI
= 0V
V
EN
= 0V, HS = floating
V
EN
= 0V, V
HS
= 0V
f = 20kHz
V
LI
= V
HI
= 0V or V
LI
= 0V and V
HI
= 10V
f = 20kHz
42
0.1
0.1
150
35
210
100
1
1
350
100
400
µA
µA
µA
µA
µA
Input (TTL: LI and HI)
V
IL
V
IH
V
HYS
I
HI_LI
R
I
Low-Level Input Voltage
High-Level Input Voltage
Input Voltage Hysteresis
Input Current
Input Pull-Down Resistance
V
LI
= V
HI
= 20V
2.2
0.2
57
300
0.8
V
V
V
µA
kΩ
Input (TTL: EN and ST)
V
IL
V
IH
V
HYS
I
HI_LI
R
I
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
High-Level Input Voltage
Input Voltage Hysteresis
Pin Current
Input Pull-Down Resistance
V
LI
= V
HI
= 20V
2.2
0.2
57
300
0.8
V
V
V
µA
kΩ
May 12, 2015
3
Revision 1.0
Micrel, Inc.
MIC4608
Electrical Characteristics
(3)(4)
(Continued)
V
DD
= V
HB
= 20V; V
SS
= V
HS
= 0V; V
ST
= 0V; No load on LO or HO; T
A
= 25°C, unless noted.
Bold
values indicate –40°C≤ T
J
≤ +125°C.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
Undervoltage Protection
V
DDR
V
DDH
V
HBR
V
HBH
V
DD
Falling Threshold
V
DD
Rising Threshold
V
DD
Threshold Hysteresis
HB Falling Threshold
HB Rising Threshold
HB Threshold Hysteresis
7.0
7.0
8.5
9.0
0.5
8.0
8.5
0.5
9.0
9.6
V
V
V
V
V
V
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
= 50mA
I
LO
=
−50mA,
V
OHL
= V
DD
- V
LO
V
LO
= 0V
0.46
0.46
1
1
0.9
0.9
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
I
HO
= 50mA
I
HO
=
−50mA,
V
OHH
= V
HB
– V
HO
V
HO
= 0V
0.4
0.4
1
1
0.9
0.9
V
V
A
A
Switching Specifications (V
LI/HI
high level=10V; C
LOAD
on HO/LO = 1.15nF)
fs
t
HI_LI_OL
t
ON
t
OFF
t
ON
t
ON
t
OFF
t
OFF
t
EN_RISE
t
EN_FALL
t
R
t
F
t
FLTR
t
D
t
PW
Note:
5. Guaranteed by design. Not production tested.
Switching Frequency Range
Overlap Timing Between LI/HI
Turn-On Propagation Delay
Turn-Off Propagation Delay
HO Turn-On Propagation Delay
LO Turn-On Propagation Delay
HO Turn-Off Propagation Delay
LO Turn-Off Propagation Delay
Enable Turn-On Prop Delay
Enable Turn-Off Prop Delay
Turn-On Rise Time
Turn-Off Fall Time
Input Filtering Time
Dead Time
Minimum Input Pulse Width that
Changes the Output
Note 5
LI, HI, EN, ST pins
160
220
V
ST
= 0V; LI to LO or HI to HO
V
ST
= 0V; LI to LO or HI to HO
V
ST
= 20V; HI Rising to HO Rising
V
ST
= 20V; HI Falling to LO Rising
V
ST
= 20V; HI Falling to HO Falling
V
ST
= 20V; HI Rising to LO Falling
EN to HO or LO
EN to HO or LO
300
300
520
520
300
400
25
20
450
450
850
750
450
615
2800
600
31
31
200
300
350
60
60
320
420
600
600
1020
1020
600
1020
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
May 12, 2015
4
Revision 1.0
Micrel, Inc.
MIC4608
Timing Diagram
Figure 1. Minimum Pulse Width diagram
Figure 2. Dead Time, Propagation Delay and Rise/Fall Time Diagram
May 12, 2015
5
Revision 1.0
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