Document
MIC4100/1 www.DataSheet4U.com
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 highside 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. Undervoltage 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
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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
www.DataSheet4U.com
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 (VDD, VHB – VHS) ...................... -0.3V to 18V Input Voltages (VLI, VHI) ......................... -0.3V to VDD + 0.3V Voltage on LO (VLO) .............................. -0.3V to VDD + 0.3V Voltage on HO (VHO) ......................VHS - 0.3V to VHB + 0.3V Voltage on HS (continuous) .............................. -1V to 110V Voltage on HB ..............................................................118V Average Current in VDD to HB Diode.......................100mA Junction Temperature (TJ) ........................–55°C to +150°C Storage Temperature (Ts) ..........................-60°C to +150°C EDS Rating(3) ..............................................................Note 3
Operating Ratings(2)
www.DataSheet4U.com
Supply Voltage (VDD)........................................ +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 ...................................VHS + 8V to VHS + 16V and............................................ VDD - 1V to VDD + 100V Junction Temperature (TJ) ........................ –40°C to +125°C Junction Thermal Resistance SOIC-8L (θJA)...................................................140°C/W
Electrical Characteristics(4)
VDD = VHB = 12V; VSS = VHS = 0V; No load on LO or HO; TA = 25°C; unless noted. Bold values indicate –40°C< TJ < +125°C.
Parameter Supply Current
VDD Quiescent Current VDD Operating Current Total HB Quiescent Current Total HB Operating Current HB to VSS Current, Quiescent HB to VSS Current, Operating Low Level Input Voltage Threshold High Level Input Voltage Threshold Input Voltage Hysteresis Input Pulldown Resistance
Symbo.