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参数资料
| 型号： | LTM4600HVEV |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 17 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PBGA104 |
| 封装： | 15 X 15 MM, 2.80 MM HEIGHT, ROHS COMPLIANT, MO-222, LGA-104 |
| 文件页数： | 5/24页 |
| 文件大小： | 389K |
| 代理商： | LTM4600HVEV |
PRERELEASE
LTM4600HV
13
4600hvp
Enable
The RUN/SS pin can be driven from logic as shown in Figure
5. This function allows the LTM4600HV to be turned on or
off remotely. The ON signal can also control the sequence
of the output voltage.
Figure 5. Enable Circuit with External Logic
RUN/SS
4600hv F05
LTM4600HV
PGND
2N7002
SGND
ON
Figure 6. Output Voltage Tracking with the LTC2923 Controller
Q1
VCC
VIN
RONB
VIN
5V
RTB1
RTB2
49.9k
1.8V
3.3V
RTA2
RTA1
RONA
ON
RAMPBUF
TRACK1
TRACK2
FB1
GATE
LTC2923
GND
4600hv F06
RAMP
66.5k
1.5V
LTM4600HV
VIN
VOUT
LTM4600HV
DC/DC
VIN
VOUT
VOSET
FB2
SDO
STATUS
Output Voltage Tracking
For the applications that require output voltage tracking,
several LTM4600HV modules can be programmed by the
power supply tracking controller such as the LTC2923.
Figure 6 shows a typical schematic with LTC2923. Coin-
cident, ratiometric and offset tracking for VO rising and
APPLICATIO S I FOR ATIO
WU
U
falling can be implemented with different sets of resistor
values. See the LTC2923 data sheet for more details.
EXTVCC Connection
An internal low dropout regulator produces an internal 5V
supply that powers the control circuitry and FET drivers.
Therefore, if the system does not have a 5V power rail,
the LTM4600HV can be directly powered by VIN. The gate
driver current through LDO is about 18mA. The internal
LDO power dissipation can be calculated as:
PLDO_LOSS = 18mA (VIN – 5V)
The LTM4600HV also provides an external gate driver
voltage pin EXTVCC. If there is a 5V rail in the system, it
is recommended to connect EXTVCC pin to the external
5V rail. Whenever the EXTVCC pin is above 4.7V, the in-
ternal 5V LDO is shut off and an internal 50mA P-channel
switch connects the EXTVCC to internal 5V. Internal 5V is
supplied from EXTVCC until this pin drops below 4.5V. Do
not apply more than 6V to the EXTVCC pin and ensure that
EXTVCC < VIN. The following list summaries the possible
connections for EXTVCC:
1. EXTVCC grounded. Internal 5V LDO is always powered
from the internal 5V regulator.
2. EXTVCC connected to an external supply. Internal LDO
is shut off. A high efciency supply compatible with the
MOSFET gate drive requirements (typically 5V) can im-
prove overall efciency. With this connection, it is always
required that the EXTVCC voltage can not be higher than
VIN pin voltage.
3. EXTVCC is recommended for VIN > 20V
Discontinuous Operation and FCB Pin
The FCB pin determines whether the internal bottom
MOSFET remains on when the inductor current reverses.
There is an internal 4.75k pulling down resistor connecting
this pin to ground. The default light load operation mode
is forced continuous (PWM) current mode. This mode
provides minimum output voltage ripple.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTM4600HVEV#PBF | 功能描述:IC DC/DC UMODULE 10A 104-LGA RoHS:是 类别:电源 - 板载 >> DC DC Converters 系列:µModule® 设计资源:VI-200, VI-J00 Design Guide, Appl Manual 标准包装:1 系列:* 类型:隔离 输出数:1 电压 - 输入（最小）:66V 电压 - 输入（最大）:160V Voltage - Output 1:12V Voltage - Output 2:- Voltage - Output 3:- 电流 - 输出（最大）:* 电源（瓦） - 制造商系列:50W 电压 - 隔离:* 特点:* 安装类型:通孔 封装/外壳:9-FinMod 尺寸/尺寸:4.60" L x 1.86" W x 0.79" H（116.8mm x 47.2mm x 20.1mm） 包装:散装 工作温度:-25°C ~ 85°C 效率:* 电源（瓦特）- 最大:* |
| LTM4600HVEVPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single-Out Step Down |
| LTM4600HVEV-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
| LTM4600HVEV-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
| LTM4600HVIV | 制造商:LINER 制造商全称:Linear Technology 功能描述:10A, 28VIN High Effi ciency DC/DC μModule |
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