参数资料
型号: MAX17000EVKIT+
厂商: Maxim Integrated Products
文件页数: 16/32页
文件大小: 0K
描述: KIT EVAL FOR MAX17000
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 特殊用途 DC/DC,DDR 存储器电源
输出及类型: 3,非隔离
功率 - 输出: 19.8W
输出电压: 1.8V,0.9V,0.9V
电流 - 输出: 10A,2A,3mA
输入电压: 7 ~ 20 V
稳压器拓扑结构: 降压
频率 - 开关: 300kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MAX17000
MAX17000
Complete DDR2 and DDR3 Memory
Power-Management Solution
+5V
1
OVP
TON
14
R TON
V IN
7V TO 20V
+5V
5V V CC
R3
100k Ω
C VDD
1 μ F
PGND
R2
100k Ω
R1
10 Ω
2
3
19
23
PGOOD1
PGOOD2
V DD
V CC
BST
DH
LX
DL
PGND1
CSH
CSL
17
15
C BST
0.1 μ F
16
18
20
13
12
N L
N H
D1
PGND
L1
C IN
PGND
R SENSE
VDDQ
+1.8V OR 1.5V
C OUT
PGND
C VCC
1 μ F
AGND
21
AGND
MAX17000
FB
11
R FBA
FB OPTIONS:
1. CONNECT FB TO 5V FOR FIXED +1.8V.
2. CONNECT FB TO GND FOR FIXED +1.5V.
SLP_S3#
4
STDBY
R FBB
3. USE FB RESISTOR-DIVIDER FOR ADJUSTABLE
OUTPUT VOLTAGES.
ON/OFF
24
22
SHDN
SKIP
VTTI
PGND2
9
7
AGND
C VTTI
+1V TO + 2.5V
V CC
10
REFIN
VTT
8
PGND
C VTT
VTT = VDDQ/2
VTTS
5
VTTR
EP
PGND
AGND
Figure 1. MAX17000 Standard Application Circuit
Detailed Description
The MAX17000 complete DDR solution comprises a
step-down controller, a source/sink LDO regulator, and a
reference buffer. Maxim’s proprietary Quick-PWM pulse-
width modulator in the MAX17000 is specifically
designed for handling fast load steps while maintaining a
relatively constant operating frequency and inductor
operating point over a wide range of input voltages. The
Quick-PWM architecture circumvents the poor load-tran-
sient timing problems of fixed-frequency current-mode
PWMs, while also avoiding the problems caused by
widely varying switching frequencies in conventional con-
stant-on-time and constant-off-time PWM schemes.
Figure 1 is the MAX17000 standard application circuit
and Figure 2 is the MAX17000 functional diagram.
16
6
VTTR = VDDQ/2
C VTTR
0.33 μ F
AGND
The MAX17000 includes a ±2A source/sink LDO regu-
lator for the memory termination rail. The source/sink
regulator features a dead band that either sources or
sinks, ideal for the fast-changing short-period loads
presenting in memory termination applications. This
feature also reduces the VTT output capacitance
requirement down to 1 μF, though load-transient
response can still require higher capacitance values
between 10μF and 20μF.
The reference buffer sources and sinks ±3mA, generating
a reference rail for use in the memory controller and
memory devices.
Maxim Integrated
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MAX17003ETJ+ 功能描述:电压模式 PWM 控制器 Quad Out Main Power Supply Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel
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