tp2150b Tripath Technology Inc., tp2150b Datasheet

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tp2150b

Manufacturer Part Number
tp2150b
Description
Dual High Side And Low Side Mosfet Driver
Manufacturer
Tripath Technology Inc.
Datasheet

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Part Number
Manufacturer
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Price
Part Number:
TP2150B
Manufacturer:
TRIPATH
Quantity:
20 000
GENERAL DESCRIPTION
TP2150B
DUAL HIGH SIDE AND LOW SIDE MOSFET DRIVER
Applications
¾Switch mode audio power amplifier
¾Switch mode power supply
¾MOSFET driver
Benefits
¾Reduced system cost with smaller/less
¾Signal fidelity equal to high quality Class-AB
¾Floating reference high side driver allows for N
The TP2150B is a high speed, dual high side and low side MOSFET driver. The TP2150B level shifts CMOS
or TTL input levels to gate signals for driving high voltage and high current MOSFETs in a dual half bridge or
single full bridge configuration. The built in bootstrap circuitry allows for the high side to drive an N-channel
power MOSFET
1
T e c h n i c a l I n f o r m a t i o n
expensive power supply and heat sink
amplifiers when paired with Tripath TC2001
channel output power MOSFETs on the high
side.
.
T r i p a t h T e c h n o l o g y , I n c . - T e c h n i c a l I n f o r m a t i o n
Features
¾Pin Compatible with Tripath TP2350B
¾Supports wide range of power supplies
¾Built in switching regulator driver to power the
¾Over-current protection
¾Over-temperature protection
gate drive circuitry (VN10)
TP2150B - MC/ 1.7/06.04
R e v i s i o n 1 . 7 – J u n e 2 0 0 4

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tp2150b Summary of contents

Page 1

... GENERAL DESCRIPTION The TP2150B is a high speed, dual high side and low side MOSFET driver. The TP2150B level shifts CMOS or TTL input levels to gate signals for driving high voltage and high current MOSFETs in a dual half bridge or single full bridge configuration ...

Page 2

... THERMAL FAULT SHUTDOW Level YX Shift Down Level Shift Up YXB 3.6K : High Side Overcurrent Sense Low Side Overcurrent Sense 3.6K : VBOO XCOM VNN VN10 LOX LOXCO M VNN OCSXHP O CSXHN AGND O CSXLP OCSXLN TP2150B - MC/ 1.7/06.04 ...

Page 3

... Absolute Maximum Ratings TP2150B SYMBOL PARAMETER VPP, VNN Supply Voltage VN10 Voltage for FET drive V5 5V power supply T Storage Temperature Range STORE T Operating Free-air Temperature Range (Note Junction Temperature J ESD ESD Susceptibility – Human Body Model (Note 5) HB All pins ESD ESD Susceptibility – ...

Page 4

... MIN. +/- 15 9 4.5 TYP. MAX. UNITS 100 110 mA 10 500 200 1 TYP. MAX. UNITS +/-45 +/- 5 190 nS 135 160 nS 140 nS TP2150B - MC/ 1.7/06.04 ...

Page 5

... Timing Diagram for High Side Driver 5V 4.0V INPUT 2.5V (Y1, Y2 HOCOM+10V HOCOM+9.6V OUTPUT (HO1, HO2) HOCOM+2.8V HOCOM TP2150B - MC/ 1.7/06.04 ...

Page 6

... 64-pin LQFP (Top View) TP2150B - MC/ 1.7/06.04 NC OCS2LN OCS2LP NC NC VBOOT2 ...

Page 7

... FET drive circuitry. This voltage must be stable and referenced to VNN. Negative supply voltage. Over Current Sense inputs, Channel 1 high-side Over Current Sense inputs, Channel 1 low-side Feedback for regulating switching power supply output for VN10 Switching power supply output for VN10 Not connected (bonded) internally. TP2150B - MC/ 1.7/06.04 ...

Page 8

... R 2.2, 0.5W OCS2LP 31 OCS2LN * are optional and only recommended for high power 4:applications used then it should be 0:. All of the NC (no connect) pins for the TP2150B can be tied to ground or left floating. VPP MUR120 S 0.1uF B 330uF VN10 R 250: B ...

Page 9

... High frequency bootstrap capacitor, which filters the high side gate drive supply. B This capacitor must be located as close to VBOOT1 (pin 57 of the TP2150B) or VBOOT2 (pin 27 of the TP2150B) for reliable operation. The “negative” side of C should be connected directly to the HO1COM (pin 47 of the TP2150B) or HO2COM (pin 37 of the TP2150B) ...

Page 10

... HOCOM diode. These diodes must be connected from the HOCOM pin (pin pin 47 of the TP2150B) to the OCSHN pins (pin 34 or pin 50 of the TP2150B) and the OCSLP pins (pin the TP2150B). This diode absorbs any high frequency undershoots caused by the output inductor L conditions and protects the TP2150B during these conditions ...

Page 11

... The OCS pins must be Kelvin connected for proper operation. The TP2150B has overcurrent sense pins for both the high side output MOSFETs and the low side output MOSFETs. The OCSXHP and OCSXHN pins (pins 33 and 34, pins 50 and 51) sense the amount of current flowing out of the high side MOSFET ...

Page 12

... VN10 generator to power the TP2150B. Figure 6 shows how the VN10 generator should be connected. TP2150B VN10 Switchm ode Power Supply In some cases, though, a designer may wish to use an external VN10 generator. specification for VN10 quiescent current (100mA typical) in the Electrical Characteristics section states the amount of current needed when an external floating supply is used ...

Page 13

... Output Transistor Selection The key parameters to consider when selecting what MOSFET to use with the TP2150B are drain- source breakdown voltage (BVdss), gate charge (Qg), and on-resistance (R The BVdss rating of the MOSFET needs to be selected to accommodate the voltage swing between V and V as well as any voltage peaks caused by voltage ringing due to switching ...

Page 14

... SE stands for Single Ended Outputs and BR stands for Bridged Output MOSFETs Under Evaluation The following MOSFETs appear to be suitable for use with the TP2150B, and we are waiting for samples to evaluate. Most of these devices come from the same “family” or generation, as other recommended MOSFETs ...

Page 15

... Micrometals, www.micrometals.com). Tripath also recommends that an RC damper be used after the LC low-pass filter. No-load operation of a TP2150B amplifier can create significant peaking in the LC filter, which produces strong resonant currents that can overheat the output MOSFETs and/or other components. The RC dampens the peaking and prevents problems ...

Page 16

... TP2150B Package Information 64-pin LQFP TP2150B - MC/ 1.7/06.04 ...

Page 17

... TP2150B Package Information 64-pin LQFP TP2150B - MC/ 1.7/06.04 ...

Page 18

... Orchard Parkway, San Jose, CA 95131 408.750.3000 - P 408.750.3001 - F For more Sales Information, please visit us @ For more Technical Information, please visit www.tripath.com/cont_s.htm www.tripath.com/data.htm TP2150B - MC/ 1.7/06.04 ...

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